阅读说明：本技术 一种汽车内饰包覆pu皮革及其制备方法 (PU leather coated on automotive interior and preparation method thereof ) 是由 高金岗 孙利 顾天琪 唐豪 于 2020-11-26 设计创作，主要内容包括：本发明涉及高分子材料技术领域,具体涉及一种汽车内饰包覆PU皮革及其制备方法；所述汽车内饰包覆PU皮革至少包括防渗透基布、PU粘合剂、PU高固层；所述防渗透基布和PU高固层通过PU粘合剂粘结；按重量份计,所述PU高固层的制备原料至少包括高固树脂95-105份、催化剂6-8份、有机溶剂2.5-6份、阻燃剂10-30份、流平剂0.55-0.85份、色浆0.01-2份、发泡剂0.5-1.5份。(The invention relates to the technical field of high polymer materials, in particular to PU leather coated with automotive interior and a preparation method thereof; the automotive interior coating PU leather at least comprises anti-seepage base cloth, a PU adhesive and a PU high-solid layer; the anti-seepage base cloth and the PU high-solid layer are bonded through a PU adhesive; the PU high-solid layer is prepared from 95-105 parts by weight of high-solid resin, 6-8 parts by weight of catalyst, 2.5-6 parts by weight of organic solvent, 10-30 parts by weight of flame retardant, 0.55-0.85 part by weight of flatting agent, 0.01-2 parts by weight of color paste and 0.5-1.5 parts by weight of foaming agent.)

1. The automotive interior cladding PU leather is characterized by at least comprising impermeable base cloth, a PU adhesive and a PU high-solid layer; the anti-seepage base cloth and the PU high-solid layer are bonded through a PU adhesive; the PU high-solid layer is prepared from 95-105 parts by weight of high-solid resin, 6-8 parts by weight of catalyst, 2.5-6 parts by weight of organic solvent, 10-30 parts by weight of flame retardant, 0.55-0.85 part by weight of flatting agent, 0.01-2 parts by weight of color paste and 0.5-1.5 parts by weight of foaming agent.

2. The automotive interior-coated PU leather of claim 1, wherein the high-solid resin is a high-solid polyurethane resin.

3. The automotive interior-coated PU leather of claim 2, wherein the solid content of the high-solid polyurethane resin is 55 to 60%.

4. The automotive interior-coated PU leather of claim 1, wherein the catalyst is an amine catalyst.

5. The automotive interior-coated PU leather of claim 4, wherein the amine catalyst has a viscosity of 100-180cps at 25 ℃.

6. The automotive interior-coated PU leather of claim 1, wherein the flame retardant is selected from one or more of a phosphorus flame retardant, a borate flame retardant, a stannate flame retardant, an oxide flame retardant, and a silicon flame retardant.

7. The automotive interior-coated PU leather according to claim 1, wherein the leveling agent is one or more selected from polydimethylsiloxane, polyether polyester modified organosiloxane, alkyl modified organosiloxane and terminal modified silicone.

8. The automotive interior-coated PU leather of claim 1, wherein the PU adhesive is prepared from at least 95-105 parts of isocyanate, 48-70 parts of polyol, 0.04-0.06 part of accelerator, 0.18-0.3 part of catalyst, 0.15-0.25 part of leveling agent, and 11-16 parts of flame retardant.

9. The automotive interior-coating PU leather of claim 8, wherein the hydroxyl value of the polyol is 100-200 mgKOH/g.

10. The process for the preparation of the automotive interior-coated PU leather according to any one of claims 1 to 9, wherein the process comprises at least the following steps: and (3) adhering the PU high-solid layer and the anti-seepage base cloth by using a PU adhesive, drying for 10 +/-1 min at 135-145 ℃, completely curing, and then separating release paper to obtain the anti-seepage base cloth.

Technical Field

The invention relates to the technical field of high polymer materials, and particularly relates to PU leather coated with automotive interior and a preparation method thereof.

Background

The PU leather coated on the common automotive interior also has the following problems:

at present, the manufacturing process of PU leather is gradually mature, but the problem of insufficient bonding and stripping force with a 3D Mesh or a plastic framework still exists in the market for PU leather spray coating molding, particularly the coating efficiency is influenced at the position of an automotive trim instrument panel, wherein 3D Mesh cloth is commonly called as extra-thick sandwich Mesh cloth, also called as 3D material or 3D spacer fabric, and is a novel pure fabric material with excellent air permeability, elasticity and support property; the PU leather for spraying and coating the adhesive mainly uses the knitted base fabric as a base material in the market at present, and the problem of adhesive permeation exists in the process of coating and spraying the adhesive on the knitted base fabric all the time, so that the adhesive consumption is large in the process of spraying the adhesive, and the stripping force of a coating sample piece is insufficient due to the problem of adhesive permeation.

Disclosure of Invention

In order to solve the technical problems, the invention provides an automotive interior cladding PU leather, which at least comprises an anti-seepage base fabric, a PU adhesive and a PU high-solid layer; the anti-seepage base cloth and the PU high-solid layer are bonded through a PU adhesive; the PU high-solid layer is prepared from 95-105 parts by weight of high-solid resin, 6-8 parts by weight of catalyst, 2.5-6 parts by weight of organic solvent, 10-30 parts by weight of flame retardant, 0.55-0.85 part by weight of flatting agent, 0.01-2 parts by weight of color paste and 0.5-1.5 parts by weight of foaming agent.

As a preferable technical solution, the high-solid resin is a high-solid polyurethane resin.

As a preferable technical scheme, the solid content of the high-solid polyurethane resin is 55-60%.

As a preferable technical scheme, the catalyst is an amine catalyst.

As a preferred technical scheme, the viscosity of the amine catalyst at 25 ℃ is 100-180 cps.

As a preferable technical scheme, the flame retardant is one or more selected from a phosphorus flame retardant, a borate flame retardant, a stannate flame retardant, an oxide flame retardant and a silicon flame retardant.

As a preferable technical scheme, the leveling agent is selected from one or more of polydimethylsiloxane, polyether polyester modified organic siloxane, alkyl modified organic siloxane and terminal modified organic silicon.

As a preferable technical scheme, the preparation raw materials of the PU adhesive at least comprise 95-105 parts of isocyanate, 48-70 parts of polyol, 0.04-0.06 part of accelerator, 0.18-0.3 part of catalyst, 0.15-0.25 part of flatting agent and 11-16 parts of flame retardant.

As a preferred technical proposal, the hydroxyl value of the polyol is 100-200 mgKOH/g.

The second aspect of the present invention provides a preparation method of the automotive interior coating PU leather, the preparation method at least comprising the following steps: and (3) adhering the PU high-solid layer and the anti-seepage base cloth by using a PU adhesive, drying for 10 +/-1 min at 135-145 ℃, completely curing, and then separating release paper to obtain the anti-seepage base cloth.

Has the advantages that: the invention provides a PU leather coated on an automotive interior and a preparation method thereof; the PU leather takes the anti-seepage base cloth subjected to special anti-seepage treatment as a substrate of the PU leather, so that glue cannot permeate into the PUR bonding layer through a base cloth yarn weaving gap in the glue spraying process of the PU leather, the glue spraying loss is reduced, the stripping force between the PU leather base cloth layer and the 3Dmesh and between the PU leather base cloth layer and the plastic framework can be greatly improved, the glue spraying amount in integral forming is reduced, and the glue cost is saved; the problem of in the cladding spout gluey process prevent to lead to cladding exemplar peel force not enough because base cloth fabric oozes gluey is solved.

Detailed Description

The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.

The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

The conjunction "consisting of …" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.

When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.

The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.

Approximating language, as used herein throughout the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received for modification without substantial change in the basic function to which the invention is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.

In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.

In order to solve the technical problems, the invention provides an automotive interior cladding PU leather, which at least comprises an anti-seepage base fabric, a PU adhesive and a PU high-solid layer; the anti-seepage base cloth and the PU high-solid layer are bonded through a PU adhesive; the PU high-solid layer is prepared from 95-105 parts by weight of high-solid resin, 6-8 parts by weight of catalyst, 2.5-6 parts by weight of organic solvent, 10-30 parts by weight of flame retardant, 0.55-0.85 part by weight of flatting agent, 0.01-2 parts by weight of color paste and 0.5-1.5 parts by weight of foaming agent.

In a preferred embodiment, the raw materials for preparing the PU high-solid layer at least comprise 100 parts of high-solid resin, 7 parts of catalyst, 4 parts of organic solvent, 20 parts of flame retardant, 0.7 part of leveling agent, 0.23 part of color paste and 0.8 part of foaming agent in parts by weight.

High solid resin

In a preferred embodiment, the high solid resin of the present invention is a high solid polyurethane resin.

In a preferred embodiment, the high solids polyurethane resin of the present invention has a solids content of 55 to 60%.

The high-solid polyurethane can be obtained commercially, and manufacturers include but are not limited to ZiboBaowei New Material science and technology Co., Ltd, and the brand is BW-8861.

Catalyst and process for preparing same

In a preferred embodiment, the catalyst of the present invention is an amine catalyst.

In a preferred embodiment, the amine catalyst of the present invention has a viscosity of 100-180cps at 25 ℃.

In a most preferred embodiment, the amine catalyst of the present invention has a viscosity of 125cps at 25 ℃.

The catalyst of the present invention is commercially available from a manufacturer including, but not limited to, Dabco 33LV, a firm shop trade company, Guangzhou City.

Organic solvent

The organic solvent can dissolve some organic compounds which are insoluble in water (such as grease, wax, resin, rubber, dye and the like), and is characterized in that the organic compound is in a liquid state at normal temperature and normal pressure and has higher volatility, and the properties of a solute and the solvent are not changed in the dissolving process.

In a preferred embodiment, the organic solvent of the present invention is propylene glycol methyl ether acetate.

The Propylene Glycol Methyl Ether Acetate (PGMEA), also called propylene glycol methyl ether acetate, has a molecular formula of C6H12O3, is colorless hygroscopic liquid, has special odor, and is a non-polluted solvent with multiple functional groups. The molecule of the compound has ether bond and carbonyl, and the carbonyl forms the structure of ester and contains alkyl. The functional groups of the two parts are mutually restricted and excluded and respectively play inherent roles. Particularly, the polyurethane has excellent dissolving capacity for high solid polyurethane with specific solid content, and the combination of the polyurethane and the polyurethane can effectively improve the bonding force between the PU leather and the base cloth layer.

Flame retardant

The flame retardant is a functional auxiliary agent for endowing a flammable polymer with flame retardancy, and is mainly designed aiming at the flame retardancy of a polyurethane material.

In a preferred embodiment, the flame retardant of the present invention is selected from one or more of phosphorus flame retardants, borate flame retardants, stannate flame retardants, oxide flame retardants, and silicon flame retardants.

In a more preferred embodiment, the flame retardant of the present invention is a phosphorus-based flame retardant.

In a most preferred embodiment, the phosphorus-based flame retardant of the present invention is sodium ammonium phosphate.

Leveling agent

The leveling agent is a common resin auxiliary agent and can promote resin to form a flat, smooth and uniform coating film in the drying film-forming process. The surface tension of the finishing liquid can be effectively reduced, and the leveling property and uniformity of the finishing liquid are improved; can improve the permeability of the coating liquid, reduce the possibility of generating spots and stains during the brush coating, increase the coverage and ensure that the formed film is uniform and natural.

In a preferred embodiment, the leveling agent of the present invention is selected from one or more of polydimethylsiloxane, polyether polyester modified organosiloxane, alkyl modified organosiloxane and terminal modified silicone.

In a preferred embodiment, the leveling agent of the present invention is a polyether polyester modified organosiloxane.

Color paste

In a preferred embodiment, the color paste according to the present invention is selected from one of carbon black, aniline black, titanium dioxide, iron oxide red, lake red, titanium yellow, cadmium oxide, and phthalocyanine green.

Foaming agent

The foaming agent of the present invention is a substance for pore-forming a target substance, and can be classified into three categories, i.e., a chemical foaming agent, a physical foaming agent and a surfactant. The chemical foaming agent is a compound which can release gases such as carbon dioxide, nitrogen and the like after being heated and decomposed and form pores in the polymer composition; physical blowing agents are compounds formed by a change in the physical form of a substance, i.e. by expansion of a compressed gas, volatilization of a liquid or dissolution of a solid. The foaming agents have higher surface activity, can effectively reduce the surface tension of liquid, are arranged on the surface of a liquid film in an electric double-layer mode to surround air to form bubbles, and then form foam by single bubbles.

In a preferred embodiment, the blowing agent of the present invention is a microsphere blowing agent.

In a most preferred embodiment, the microsphere blowing agent of the present invention is commercially available from NHC under the model number FM 40.

The foaming agent disclosed by the invention is good in compatibility with resin, and can effectively reduce the intermolecular friction, shorten the production period and realize high yield; by compounding the components, the weight of the product can be reduced, the surface unevenness can be improved, and the problems of warping, dimensional stability and the like can be solved.

The preparation method of the PU high-solid layer at least comprises the following steps: mixing high solid resin, catalyst, foaming agent, organic solvent, fire retardant and leveling agent uniformly, and banburying at 90-120 deg.C for 10-20 mm.

PU adhesive

In a preferred embodiment, the PU adhesive of the invention is prepared from raw materials including, by weight, 95-105 parts of isocyanate, 48-70 parts of polyol, 0.04-0.06 part of accelerator, 0.18-0.3 part of catalyst, 0.15-0.25 part of leveling agent and 11-16 parts of flame retardant.

In a most preferred embodiment, the preparation raw materials of the PU adhesive comprise, by weight, at least 100 parts of isocyanate, 60 parts of polyol, 0.05 part of accelerator, 0.23 part of catalyst, 0.2 part of leveling agent and 13 parts of flame retardant.

In a preferred embodiment, the isocyanate is toluene diisocyanate.

The polyhydric alcohol of the present invention is an alcohol having two or more hydroxyl groups in the molecule. The polyhydric alcohol is generally dissolved in water, and most of the polyhydric alcohol has viscous liquid or crystalline solid with the characteristics of high boiling point, strong dissolving capacity for polar substances, low toxicity and volatility and the like; the boiling point, viscosity, relative density, melting point, etc. increase with increasing molecular weight.

In a preferred embodiment, the polyol is a polyether polyol.

In a preferred embodiment, the polyol has a hydroxyl number of 100 and 200 mgKOH/g.

In a most preferred embodiment, the polyol has a hydroxyl number of 112 mgKOH/g.

The polyether polyols of the present invention are commercially available and include, but are not limited to, the dow polyether polyol VORANOL2110 TB.

In a preferred embodiment, the enhancer is stannous 2-ethylhexanoate.

In a preferred embodiment, the catalyst is Dabco 33LV, manufactured as US gas.

In a preferred embodiment, the leveling agent is polydimethylsiloxane.

In a preferred embodiment, the flame retardant is sodium ammonium phosphate.

The preparation method of the PU adhesive comprises the following steps: mixing and stirring isocyanate, polyol, an accelerant, a catalyst, a flatting agent and a flame retardant uniformly to obtain the flame retardant.

Anti-seepage base cloth

In a preferred embodiment, the base fabric is made of terylene.

The preparation method of the impermeable base fabric comprises the following steps: uniformly mixing a fluorine C8 water-based waterproof agent in water, wherein the proportion of a mixed solution is that the waterproof agent: water 1: 1000, soaking the base cloth into the mixed solution, and performing soaking and rolling treatment, drying and baking at 160-180 ℃ for 40-60s to obtain the fabric.

The grade of the fluorine C8 water-based waterproof agent is C8 waterproof agent JV-002, and the manufacturer is Jie Wei chemical industry.

The second aspect of the present invention provides a preparation method of the automotive interior coating PU leather, the preparation method at least comprising the following steps: and (3) adhering the PU high-solid layer and the anti-seepage base cloth by using a PU adhesive, drying for 10 +/-1 min at 135-145 ℃, completely curing, and then separating release paper to obtain the anti-seepage base cloth.

The invention adopts the anti-seepage base cloth on the back of the PU leather to ensure that the glue can not permeate the fabric and remains on the surface of the fabric in the glue spraying process of the PU leather, thereby reducing the glue spraying amount and achieving the effect of improving the stripping force between the PU leather base cloth layer and the 3Dmesh and plastic framework.

It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.

In addition, the raw materials used are commercially available from national chemical reagents, unless otherwise specified.

Examples

In order to better understand the above technical solutions, the following detailed descriptions will be provided with reference to specific embodiments. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention. In addition, the raw materials are commercially available and the extraction methods of the extract are all conventional extraction methods, if not otherwise specified.

Example 1

The automobile interior trim coated PU leather comprises anti-seepage base cloth, a PU adhesive and a PU high-solid layer; the anti-seepage base cloth and the PU high-solid layer are bonded through a PU adhesive; the PU high-solid layer is prepared from the raw materials of, by weight, 100 parts of high-solid resin, 7 parts of a catalyst, 4 parts of an organic solvent, 20 parts of a flame retardant, 0.7 part of a leveling agent, 0.23 part of a color paste and 0.8 part of a foaming agent.

The high-solid resin is high-solid polyurethane resin; the high-solid polyurethane can be obtained by commercial purchase, and the manufacturer is ZiboBaowei New Material science and technology Co., Ltd, and the brand is BW-8861.

The catalyst is an amine catalyst; the amine catalyst has a viscosity of 125cps at 25 ℃; the catalyst is commercially available from Guangzhou Zong commerce GmbH with model number Dabco 33 LV.

The organic solvent is propylene glycol methyl ether acetate.

The flame retardant is a phosphorus flame retardant; the phosphorus flame retardant is sodium ammonium phosphate.

The leveling agent is polyether polyester modified organic siloxane.

The color paste is aniline black.

The foaming agent is a microsphere foaming agent; the microsphere foaming agent is commercially available from NHC, model FM 40.

The preparation method of the PU high-solid layer comprises the following steps: and (3) uniformly mixing the high-solid resin, the catalyst, the foaming agent, the organic solvent, the flame retardant and the flatting agent, and banburying at the temperature of 110 ℃ for 15 mm to obtain the flame retardant.

The PU adhesive comprises, by weight, at least 100 parts of isocyanate, 60 parts of polyol, 0.05 part of accelerator, 0.23 part of catalyst, 0.2 part of flatting agent and 13 parts of flame retardant.

The isocyanate is toluene diisocyanate.

The polyol is polyether polyol; the polyether polyol is the dow polyether polyol VORANOL2110 TB.

The accelerant is 2-ethyl stannous caproate.

The catalyst was Dabco 33LV, a U.S. gas from manufacturer.

The leveling agent is polydimethylsiloxane.

The flame retardant is sodium ammonium phosphate.

The preparation method of the PU adhesive comprises the following steps: mixing and stirring isocyanate, polyol, an accelerant, a catalyst, a flatting agent and a flame retardant uniformly to obtain the flame retardant.

The preparation method of the impermeable base fabric comprises the following steps: uniformly mixing a fluorine C8 water-based waterproof agent in water, wherein the proportion of a mixed solution is that the waterproof agent: water 1: 1000, soaking the base cloth into the mixed solution, performing soaking and rolling treatment, drying and baking at the temperature of 170 ℃, and baking for 50s to obtain the fabric.

The base cloth is made of terylene.

The grade of the fluorine C8 water-based waterproof agent is C8 waterproof agent JV-002, and the manufacturer is Jie Wei chemical industry.

The preparation method of the PU leather coated on the automotive interior comprises the following steps: adhering the PU high-solid layer and the anti-seepage base cloth by using a PU adhesive, drying for 10min at 140 ℃, completely curing, and then separating the release paper to obtain the anti-seepage base cloth.

Example 2

The automobile interior trim coated PU leather comprises anti-seepage base cloth, a PU adhesive and a PU high-solid layer; the anti-seepage base cloth and the PU high-solid layer are bonded through a PU adhesive; the PU high-solid layer is prepared from 95 parts by weight of high-solid resin, 6 parts by weight of catalyst, 2.5 parts by weight of organic solvent, 10 parts by weight of flame retardant, 0.55 part by weight of flatting agent, 0.01 part by weight of color paste and 0.5 part by weight of foaming agent.

The high-solid resin is high-solid polyurethane resin; the high-solid polyurethane can be obtained by commercial purchase, and the manufacturer is ZiboBaowei New Material science and technology Co., Ltd, and the brand is BW-8861.

The catalyst is an amine catalyst; the amine catalyst has a viscosity of 125cps at 25 ℃; the catalyst is commercially available from Guangzhou Zong commerce GmbH with model number Dabco 33 LV.

The organic solvent is propylene glycol methyl ether acetate.

The flame retardant is a phosphorus flame retardant; the phosphorus flame retardant is sodium ammonium phosphate.

The leveling agent is polyether polyester modified organic siloxane.

The color paste is aniline black.

The foaming agent is a microsphere foaming agent; the microsphere foaming agent is commercially available from NHC, model FM 40.

The preparation method of the PU high-solid layer comprises the following steps: and (3) uniformly mixing the high-solid resin, the catalyst, the foaming agent, the organic solvent, the flame retardant and the flatting agent, and banburying at the temperature of 110 ℃ for 15 mm to obtain the flame retardant.

The PU adhesive comprises, by weight, at least 100 parts of isocyanate, 60 parts of polyol, 0.05 part of accelerator, 0.23 part of catalyst, 0.2 part of flatting agent and 13 parts of flame retardant.

The isocyanate is toluene diisocyanate.

The polyol is polyether polyol; the polyether polyol is the dow polyether polyol VORANOL2110 TB.

The accelerant is 2-ethyl stannous caproate.

The catalyst was Dabco 33LV, a U.S. gas from manufacturer.

The leveling agent is polydimethylsiloxane.

The flame retardant is sodium ammonium phosphate.

The preparation method of the PU adhesive comprises the following steps: mixing and stirring isocyanate, polyol, an accelerant, a catalyst, a flatting agent and a flame retardant uniformly to obtain the flame retardant.

The preparation method of the impermeable base fabric comprises the following steps: uniformly mixing a fluorine C8 water-based waterproof agent in water, wherein the proportion of a mixed solution is that the waterproof agent: water 1: 1000, soaking the base cloth into the mixed solution, performing soaking and rolling treatment, drying and baking at the temperature of 170 ℃, and baking for 50s to obtain the fabric.

The base cloth is made of terylene.

The grade of the fluorine C8 water-based waterproof agent is C8 waterproof agent JV-002, and the manufacturer is Jie Wei chemical industry.

The preparation method of the PU leather coated on the automotive interior comprises the following steps: adhering the PU high-solid layer and the anti-seepage base cloth by using a PU adhesive, drying for 10min at 140 ℃, completely curing, and then separating the release paper to obtain the anti-seepage base cloth.

Example 3

The automobile interior trim coated PU leather comprises anti-seepage base cloth, a PU adhesive and a PU high-solid layer; the anti-seepage base cloth and the PU high-solid layer are bonded through a PU adhesive; the PU high-solid layer is prepared from at least 105 parts by weight of high-solid resin, 8 parts by weight of catalyst, 6 parts by weight of organic solvent, 30 parts by weight of flame retardant, 0.85 part by weight of leveling agent, 2 parts by weight of color paste and 1.5 parts by weight of foaming agent.

The high-solid resin is high-solid polyurethane resin; the high-solid polyurethane can be obtained by commercial purchase, and the manufacturer is ZiboBaowei New Material science and technology Co., Ltd, and the brand is BW-8861.

The catalyst is an amine catalyst; the amine catalyst has a viscosity of 125cps at 25 ℃; the catalyst is commercially available from Guangzhou Zong commerce GmbH with model number Dabco 33 LV.

The organic solvent is propylene glycol methyl ether acetate.

The flame retardant is a phosphorus flame retardant; the phosphorus flame retardant is sodium ammonium phosphate.

The leveling agent is polyether polyester modified organic siloxane.

The color paste is aniline black.

The foaming agent is a microsphere foaming agent; the microsphere foaming agent is commercially available from NHC, model FM 40.

The preparation method of the PU high-solid layer comprises the following steps: and (3) uniformly mixing the high-solid resin, the catalyst, the foaming agent, the organic solvent, the flame retardant and the flatting agent, and banburying at the temperature of 110 ℃ for 15 mm to obtain the flame retardant.

The PU adhesive comprises, by weight, at least 100 parts of isocyanate, 60 parts of polyol, 0.05 part of accelerator, 0.23 part of catalyst, 0.2 part of flatting agent and 13 parts of flame retardant.

The isocyanate is toluene diisocyanate.

The polyol is polyether polyol; the polyether polyol is the dow polyether polyol VORANOL2110 TB.

The accelerant is 2-ethyl stannous caproate.

The catalyst was Dabco 33LV, a U.S. gas from manufacturer.

The leveling agent is polydimethylsiloxane.

The flame retardant is sodium ammonium phosphate.

The preparation method of the PU adhesive comprises the following steps: mixing and stirring isocyanate, polyol, an accelerant, a catalyst, a flatting agent and a flame retardant uniformly to obtain the flame retardant.

The preparation method of the impermeable base fabric comprises the following steps: uniformly mixing a fluorine C8 water-based waterproof agent in water, wherein the proportion of a mixed solution is that the waterproof agent: water 1: 1000, soaking the base cloth into the mixed solution, performing soaking and rolling treatment, drying and baking at the temperature of 170 ℃, and baking for 50s to obtain the fabric.

The base cloth is made of terylene.

The grade of the fluorine C8 water-based waterproof agent is C8 waterproof agent JV-002, and the manufacturer is Jie Wei chemical industry.

The preparation method of the PU leather coated on the automotive interior comprises the following steps: adhering the PU high-solid layer and the anti-seepage base cloth by using a PU adhesive, drying for 10min at 140 ℃, completely curing, and then separating the release paper to obtain the anti-seepage base cloth.

Example 4

The automobile interior trim coated PU leather comprises anti-seepage base cloth, a PU adhesive and a PU high-solid layer; the anti-seepage base cloth and the PU high-solid layer are bonded through a PU adhesive; the PU high-solid layer is prepared from 100 parts by weight of high-solid resin, 7 parts by weight of catalyst, 4 parts by weight of organic solvent, 20 parts by weight of flame retardant, 0.7 part by weight of flatting agent, 0.23 part by weight of color paste and 0.8 part by weight of foaming agent.

The high-solid resin is high-solid polyurethane resin; the high-solid polyurethane can be obtained by commercial purchase, and the manufacturer is ZiboBaowei New Material science and technology Co., Ltd, and the brand is BW-8861.

The catalyst is zinc isobutyrate.

The organic solvent is propylene glycol methyl ether acetate.

The flame retardant is a phosphorus flame retardant; the phosphorus flame retardant is sodium ammonium phosphate.

The leveling agent is polyether polyester modified organic siloxane.

The color paste is aniline black.

The foaming agent is a microsphere foaming agent; the microsphere foaming agent is commercially available from NHC, model FM 40.

The preparation method of the PU high-solid layer comprises the following steps: and (3) uniformly mixing the high-solid resin, the catalyst, the foaming agent, the organic solvent, the flame retardant and the flatting agent, and banburying at the temperature of 110 ℃ for 15 mm to obtain the flame retardant.

The PU adhesive comprises, by weight, at least 100 parts of isocyanate, 60 parts of polyol, 0.05 part of accelerator, 0.23 part of catalyst, 0.2 part of flatting agent and 13 parts of flame retardant.

The isocyanate is toluene diisocyanate.

The polyol is polyether polyol; the polyether polyol is the dow polyether polyol VORANOL2110 TB.

The accelerant is 2-ethyl stannous caproate.

The catalyst was Dabco 33LV, a U.S. gas from manufacturer.

The leveling agent is polydimethylsiloxane.

The flame retardant is sodium ammonium phosphate.

The preparation method of the PU adhesive comprises the following steps: mixing and stirring isocyanate, polyol, an accelerant, a catalyst, a flatting agent and a flame retardant uniformly to obtain the flame retardant.

The preparation method of the impermeable base fabric comprises the following steps: uniformly mixing a fluorine C8 water-based waterproof agent in water, wherein the proportion of a mixed solution is that the waterproof agent: water 1: 1000, soaking the base cloth into the mixed solution, performing soaking and rolling treatment, drying and baking at the temperature of 170 ℃, and baking for 50s to obtain the fabric.

The base cloth is made of terylene.

The grade of the fluorine C8 water-based waterproof agent is C8 waterproof agent JV-002, and the manufacturer is Jie Wei chemical industry. The preparation method of the PU leather coated on the automotive interior comprises the following steps: adhering the PU high-solid layer and the anti-seepage base cloth by using a PU adhesive, drying for 10min at 140 ℃, completely curing, and then separating the release paper to obtain the anti-seepage base cloth.

Example 5

The automotive interior cladding PU leather at least comprises anti-seepage base cloth, a PU adhesive and a PU high-solid layer; the anti-seepage base cloth and the PU high-solid layer are bonded through a PU adhesive; the PU high-solid layer is prepared from 100 parts by weight of high-solid resin, 7 parts by weight of catalyst, 4 parts by weight of organic solvent, 20 parts by weight of flame retardant, 0.7 part by weight of flatting agent, 0.23 part by weight of color paste and 0.8 part by weight of foaming agent.

The high-solid resin is high-solid polyurethane resin; the solid content of the high-solid polyurethane is 50%, the manufacturer is Guangzhou Yun warship trade company, and the brand is YJ-2601.

The catalyst is an amine catalyst; the amine catalyst has a viscosity of 125cps at 25 ℃; the catalyst is commercially available from Guangzhou Zong commerce GmbH with model number Dabco 33 LV.

The organic solvent is propylene glycol methyl ether acetate.

The flame retardant is a phosphorus flame retardant; the phosphorus flame retardant is sodium ammonium phosphate.

The leveling agent is polyether polyester modified organic siloxane.

The color paste is aniline black.

The foaming agent is a microsphere foaming agent; the microsphere foaming agent is commercially available from NHC, model FM 40.

The preparation method of the PU high-solid layer comprises the following steps: and (3) uniformly mixing the high-solid resin, the catalyst, the foaming agent, the organic solvent, the flame retardant and the flatting agent, and banburying at the temperature of 110 ℃ for 15 mm to obtain the flame retardant.

The PU adhesive comprises, by weight, at least 100 parts of isocyanate, 60 parts of polyol, 0.05 part of accelerator, 0.23 part of catalyst, 0.2 part of flatting agent and 13 parts of flame retardant.

The isocyanate is toluene diisocyanate.

The polyol is polyether polyol; the polyether polyol is the dow polyether polyol VORANOL2110 TB.

The accelerant is 2-ethyl stannous caproate.

The catalyst was Dabco 33LV, a U.S. gas from manufacturer.

The leveling agent is polydimethylsiloxane.

The flame retardant is sodium ammonium phosphate.

The preparation method of the PU adhesive comprises the following steps: mixing and stirring isocyanate, polyol, an accelerant, a catalyst, a flatting agent and a flame retardant uniformly to obtain the flame retardant.

The preparation method of the impermeable base fabric comprises the following steps: uniformly mixing a fluorine C8 water-based waterproof agent in water, wherein the proportion of a mixed solution is that the waterproof agent: water 1: 1000, soaking the base cloth into the mixed solution, performing soaking and rolling treatment, drying and baking at the temperature of 170 ℃, and baking for 50s to obtain the fabric.

The base cloth is made of terylene.

The grade of the fluorine C8 water-based waterproof agent is C8 waterproof agent JV-002, and the manufacturer is Jie Wei chemical industry. The preparation method of the PU leather coated on the automotive interior comprises the following steps: adhering the PU high-solid layer and the anti-seepage base cloth by using a PU adhesive, drying for 10min at 140 ℃, completely curing, and then separating the release paper to obtain the anti-seepage base cloth.

Example 6

The automobile interior trim coated PU leather comprises anti-seepage base cloth, a PU adhesive and a PU high-solid layer; the anti-seepage base cloth and the PU high-solid layer are bonded through a PU adhesive; the PU high-solid layer is prepared from the raw materials of, by weight, 100 parts of high-solid resin, 7 parts of a catalyst, 4 parts of an organic solvent, 20 parts of a flame retardant, 0.7 part of a leveling agent, 0.23 part of a color paste and 0.8 part of a foaming agent.

The high-solid resin is high-solid polyurethane resin; the high-solid polyurethane can be obtained by commercial purchase, and the manufacturer is ZiboBaowei New Material science and technology Co., Ltd, and the brand is BW-8861.

The catalyst is an amine catalyst; the amine catalyst has a viscosity of 125cps at 25 ℃; the catalyst is commercially available from Guangzhou Zong commerce GmbH with model number Dabco 33 LV.

The organic solvent is propylene glycol methyl ether acetate.

The flame retardant is a phosphorus flame retardant; the phosphorus flame retardant is sodium ammonium phosphate.

The leveling agent is polyether polyester modified organic siloxane.

The color paste is aniline black.

The foaming agent is a microsphere foaming agent; the microsphere foaming agent is commercially available from NHC, model FM 40.

The preparation method of the PU high-solid layer comprises the following steps: and (3) uniformly mixing the high-solid resin, the catalyst, the foaming agent, the organic solvent, the flame retardant and the flatting agent, and banburying at the temperature of 110 ℃ for 15 mm to obtain the flame retardant.

The PU adhesive comprises, by weight, at least 100 parts of isocyanate, 60 parts of polyol, 0.05 part of accelerator, 0.23 part of catalyst, 0.2 part of flatting agent and 13 parts of flame retardant.

The isocyanate is toluene diisocyanate.

The polyol is polyether polyol; the polyether polyol is the dow polyether polyol VORANOL2110 TB.

The accelerant is 2-ethyl stannous caproate.

The catalyst was Dabco 33LV, a U.S. gas from manufacturer.

The leveling agent is polydimethylsiloxane.

The flame retardant is sodium ammonium phosphate.

The preparation method of the PU adhesive comprises the following steps: mixing and stirring isocyanate, polyol, an accelerant, a catalyst, a flatting agent and a flame retardant uniformly to obtain the flame retardant.

The preparation method of the impermeable base fabric comprises the following steps: uniformly mixing the waterproof agent in water, wherein the proportion of the mixed solution is that the waterproof agent: water 1: 1000, soaking the base cloth into the mixed solution, performing soaking and rolling treatment, drying and baking at the temperature of 170 ℃, and baking for 50s to obtain the fabric.

The base cloth is made of terylene.

The waterproof agent is EO-REP, and the manufacturer is a far-reaching new chemical.

The preparation method of the PU leather coated on the automotive interior comprises the following steps: adhering the PU high-solid layer and the anti-seepage base cloth by using a PU adhesive, drying for 10min at 140 ℃, completely curing, and then separating the release paper to obtain the anti-seepage base cloth.

Evaluation of Performance

1. And (3) water repellency test: the automotive interior coating PU leather GBT4745-2012 prepared in examples 1-6 was tested for water repellency and the results are shown in table 1 below.

2. Peeling test: the automotive interior-covering PU leathers prepared in examples 1 to 6 were tested for releasability by GBT 8808-1988, and the test results are shown in Table 1 below.

TABLE 1 test results

The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.