阅读说明：本技术 发泡透气膜复合多功能面料 (Foaming breathable film composite multifunctional fabric ) 是由 陈明贤 孙立新 董洪波 于 2019-04-30 设计创作，主要内容包括：本发明公开了一种发泡透气膜复合多功能面料,从上至下包括表层面料、粘结层、发泡薄膜、粘结层、里层面料,面料与薄膜通过粘结层复合,所述的表层面料表面还设置了防水剂；制备发泡透气膜复合多功能面料步骤如下：①将防水剂与水配置成防水剂整理液,②表层面料浸轧防水剂整理液,③烘干、焙烘,④表面面料、里层面料涂覆粘结剂,与发泡薄膜复合,⑤烘干、焙烘。(The invention discloses a foaming breathable film composite multifunctional fabric which comprises a surface fabric, a bonding layer, a foaming film, a bonding layer and an inner fabric from top to bottom, wherein the fabric and the film are compounded through the bonding layer, a waterproof agent is further arranged on the surface of the surface fabric, the step of preparing the foaming breathable film composite multifunctional fabric comprises ① preparing a waterproof agent and water into a waterproof agent finishing liquid, padding ② the surface fabric with the waterproof agent finishing liquid, ③ drying and baking, coating ④ the surface fabric and the inner fabric with a binder, compounding with the foaming film, ⑤ drying and baking.)

1. A foaming breathable film composite multifunctional fabric comprises a surface layer fabric, a bonding layer, a foaming film, a bonding layer and an inner layer fabric from top to bottom, wherein the fabric and the film are compounded through the bonding layer, and a waterproof agent is further arranged on the surface of the surface layer fabric;

the preparation method of the foaming breathable film composite multifunctional fabric comprises the following steps:

① preparing finishing liquid of water-proofing agent from water,

② padding surface fabric with finishing liquid of waterproof agent,

③ drying the mixture, baking the mixture,

④ coating adhesive on the surface fabric and the lining fabric, compounding with the foamed film,

⑤ oven drying and baking;

the waterproof agent is prepared by carrying out polymerization reaction on an organic silicon monomer, an organic fluorine monomer, modified nano-silica sol, an emulsifier, an initiator and water, and the preparation method comprises the following steps:

1) modified nano-silica sol

Adding 21 parts of gamma-methacryloxypropyltrimethoxysilane (silane coupling agent KH-570), 8 parts of benzophenone siloxane (shown in formula 1), 4 parts of sodium dodecyl sulfate and 6 parts of alkylphenol polyoxyethylene ether (OP-10) into 320 parts of water, stirring, dispersing, adding 11 parts of ammonia water under stirring, and continuously stirring for reacting for 4 hours to form nano SiO containing C-C bonds₂Sol;

2) synthesis of emulsion of water-proofing agent

Adding 140 parts of water, 13 parts of modified nano-silica sol and 8 parts of emulsifier into a reaction kettle, dissolving, stirring and dispersing uniformly, then adding 12 parts of organic silicon monomer (shown as formula 2), stirring and emulsifying for 0.5 h; when the temperature reaches 78 ℃, adding a solution of 0.3 part of initiator and 8 parts of water, and carrying out heat preservation reaction for 0.5 h; dropwise adding 0.5 part of initiator and 15 parts of water solution, 16 parts of organic silicon monomer and 13 parts of organic fluorine monomer, and finishing dropping within 2 hours; heating to 85 ℃, continuing to perform heat preservation reaction for 1h, and then cooling to below 50 ℃ to obtain the waterproof agent emulsion.

2. The foamed breathable film composite multifunctional fabric according to claim 1, which is characterized in that: the surface fabric is 100D +40D + 100D +40D terylene four-side stretch fabric with the gram weight of 130g/m²。

3. The foamed breathable film composite multifunctional fabric according to claim 1, which is characterized in that: the lining fabric is 100D/144F terylene polar fleece with the gram weight of 160g/m²。

4. The foamed breathable film composite multifunctional fabric according to claim 1, which is characterized in that: the foamed film is a TPU foamed film, and the thickness of the foamed film is 0.015 mm.

Technical Field

The invention relates to a composite functional fabric, in particular to a foaming breathable film composite multifunctional fabric, and belongs to the field of functional textiles.

Background

The waterproof moisture permeable fabric is also called waterproof breathable fabric, and is a fabric which can prevent rain and wind, and can perspire and ventilate. In the wearing process, water cannot permeate the fabric under certain pressure, sweat emitted by a human body can be conducted to the outside through the fabric in the form of water vapor, condensation and accumulation between the surface of the human body and the fabric are avoided, and a wearer is kept dry and warm. Most of the waterproof moisture-permeable functional fabrics are high-density fabrics, coating fabrics and laminated fabrics. Laminated fabrics are the majority in terms of ease of processing and performance.

The PTFE biaxial stretching microporous film which is firstly used for laminated fabrics has the thickness of about 20-70 mu m, the porosity of 25-96%, the average pore diameter of 0.18-1.3 mu m, the average pore diameter of 1/20000 of water drops, the molecular weight of the film is 700 times larger than that of water vapor, the hydrostatic pressure resistance of the film is 90-170 kP, and the moisture permeability is 4000-17000 g/m²24h, air permeability less than 0.3ml/m²S. Therefore, the waterproof, moisture permeable and windproof fabric has good waterproof, moisture permeable and windproof functions. The laminated fabric has good windproof performance and weak moisture and air permeability. If the porosity of the film is increased and the pore diameter is increased, the moisture permeability and the air permeability can be improved, but the waterproof performance and the hydrostatic pressure resistance of the laminated fabric are affected.

How can the moisture and air permeability of a laminated fabric with waterproof and moisture permeable properties be improved and the good waterproof properties of the fabric be maintained?

Disclosure of Invention

The invention aims to provide a foaming breathable film composite multifunctional fabric, which is formed by compounding a foaming TPU film and a surface layer fabric and performing waterproof treatment on the surface layer fabric.

In order to achieve the purpose, the invention adopts the following technical scheme.

A foaming breathable film composite multifunctional fabric comprises a surface layer fabric, a bonding layer, a foaming film, a bonding layer and an inner layer fabric from top to bottom, wherein the fabric and the film are compounded through the bonding layer, and a waterproof agent is further arranged on the surface of the surface layer fabric;

when the foamed breathable film composite multifunctional fabric is prepared, ① prepares a waterproof agent finishing liquid by a waterproof agent and water, ② surface fabric is padded with the waterproof agent finishing liquid, ③ is dried and baked, ④ surface fabric and lining fabric are coated with a binder and are composited with a foamed film, ⑤ is dried and baked;

the waterproof agent is prepared by carrying out polymerization reaction on an organic silicon monomer, an organic fluorine monomer, modified nano-silica sol, an emulsifier, an initiator and water, and the preparation method comprises the following steps:

1) modified nano-silica sol

Adding 21 parts of gamma-methacryloxypropyltrimethoxysilane (silane coupling agent KH-570), 8 parts of benzophenone siloxane (shown in formula 1), 4 parts of sodium dodecyl sulfate and 6 parts of alkylphenol polyoxyethylene ether (OP-10) into 320 parts of water, stirring, dispersing, adding 11 parts of ammonia water under stirring, and continuously stirring for reacting for 4 hours to form nano SiO containing C-C bonds₂Sol;

2) synthesis of emulsion of water-proofing agent

Adding 140 parts of water, 13 parts of modified nano-silica sol and 8 parts of emulsifier into a reaction kettle, dissolving, stirring and dispersing uniformly, then adding 12 parts of organic silicon monomer (shown as formula 2), stirring and emulsifying for 0.5 h; when the temperature reaches 78 ℃, adding a solution of 0.3 part of initiator and 8 parts of water, and carrying out heat preservation reaction for 0.5 h; dropwise adding 0.5 part of initiator and 15 parts of water solution, 16 parts of organic silicon monomer and 13 parts of organic fluorine monomer, and finishing dropping within 2 hours; heating to 85 ℃, continuing to perform heat preservation reaction for 1h, and then cooling to below 50 ℃ to obtain the waterproof agent emulsion.

The preparation method of the benzophenone siloxane comprises the following steps: a. under the protection of nitrogen, 3-isocyanate propyl trimethoxy silane and 2-hydroxy-4-methoxy benzophenone are added into a reactor according to the mol ratio of 1.02:1, stannous octoate accounting for 0.5 percent of the mass of the 3-isocyanate propyl trimethoxy silane is added, and the mixture is stirred and reacted for 5 hours at the temperature of 70 ℃ to obtain the benzophenone siloxane.

The organic silicon monomer is prepared by reacting hydroxyethyl methacrylamide and trimethylchlorosilane, and the method comprises the steps of dissolving 0.1mol of hydroxyethyl methacrylamide in 120m L tetrahydrofuran, adding 0.1mol of triethylamine, dropwise adding 0.1mol of trimethylchlorosilane and 100m L tetrahydrofuran solution under the ice bath condition, reacting at normal temperature for 48 hours after dropwise adding, removing triethylamine hydrochloride, extracting with diethyl ether, washing with 0.1 mol/L NaOH, and drying to obtain the organic silicon monomer, namely the methacrylamido trimethylsilane.

The surface fabric is 100D +40D + 100D +40D terylene four-side stretch fabric with the gram weight of 130g/m²。

The lining fabric is 100D/144F terylene polar fleece with the gram weight of 160g/m²。

The foamed film is a TPU foamed film, and the thickness of the foamed film is 0.015 mm.

The foaming breathable film composite multifunctional fabric is formed by compounding the foaming TPU film and two layers of fabrics, the foaming TPU film enhances the breathability of the fabrics, and the composite fabrics have good waterproofness by performing waterproof treatment on the surface fabrics. Therefore, the composite fabric has both waterproof and breathable functions.

The water-proofing agent for treating surface fabric is prepared by polymerizing nano silicon dioxide (SiO), fluorine and silicon monomers₂) The surface fabric can be constructed into a rough surface, and the organic silicon-fluorine grafted on the nano silicon dioxide is a low surface energy substance, so that the hydrophobicity of the rough surface is enhanced, the organic-inorganic combination is realized, and the water repellency of the waterproof agent is enhanced.

The outdoor fabric has long sun-drying time in outdoor environment, is easy to have the problem of insufficient light fastness such as fading, and the like, and in order to enhance the light fastness, the fabric needs to be subjected to relevant treatment such as ultraviolet resistance and the like during after-finishing so as to improve the light fastness of the fabric. When the waterproof agent is prepared, a monomer with an ultraviolet absorption function is connected to the surface of the nano silicon dioxide sol in a form of a coupling agent through a modification reaction, so that the dispersion stability of a nano material can be improved, an organic-inorganic ultraviolet-resistant material can be combined, the ultraviolet-resistant function is improved, and the light fastness of the fabric is improved. If the radical polymerizable ultraviolet absorbing monomer is introduced by way of C ═ C copolymerization, copolymerization is difficult due to differences in surface properties of C ═ C-benzophenone derivatives and silicone and fluorine, and this problem can be avoided by way of introduction of benzophenone siloxanes in the present invention.

The waterproof agent in the foamed breathable film composite multifunctional fabric adopts C-R-Si (CH)₃)₃Organosilicon monomers of the radicals, each-CH₃The upper hydrogen atoms occupy more space, increasing the distance between adjacent molecules, and allowing the silicone to achieve a lower surface tension. Because the catalyst does not contain Si-O-C hydrolyzable groups, the catalyst is not hydrolyzed in the emulsion polymerization process, and the stability of the emulsion polymerization is greatly improved.

Detailed Description

The unit "part(s)" of the substance in the present invention means "part(s) by mass".

The invention discloses a foaming breathable film composite multifunctional fabric which comprises a surface layer fabric, a bonding layer, a foaming film, a bonding layer and an inner layer fabric from top to bottom, wherein a waterproof agent is arranged on the surface of the surface layer fabric, and the fabric and the film are compounded through the bonding layer;

when the foamed breathable film composite multifunctional fabric is prepared, ① is used for preparing a waterproof agent finishing liquid from a waterproof agent and water, ② surface fabric is padded with the waterproof agent finishing liquid, ③ is dried and baked, ④ surface fabric and inner fabric are coated with a binder and are composited with a foamed film, ⑤ is dried and baked.

The waterproof agent is prepared by carrying out polymerization reaction on an organic silicon monomer, an organic fluorine monomer, modified nano-silica sol, an emulsifier, an initiator and water, and the preparation method comprises the following steps:

1) modified nano-silica sol

Adding 21 parts of gamma-methacryloxypropyltrimethoxysilane (a silane coupling agent KH-570), 8 parts of benzophenone siloxane (shown as the formula 1), 4 parts of sodium dodecyl sulfate and 6 parts of alkylphenol polyoxyethylene ether (OP-10) into 320 parts of water, stirring, dispersing, adding 11 parts of ammonia water under stirring, and continuously stirring for reacting for 4 hours to form nano SiO containing C-C bonds₂Sol;

2) synthesis of emulsion of water-proofing agent

Adding 140 parts of water, 13 parts of modified nano-silica sol and 8 parts of emulsifier into a reaction kettle, dissolving, stirring and dispersing uniformly, then adding 12 parts of organic silicon monomer (shown as the formula 2), stirring and emulsifying for 0.5 h; when the temperature reaches 78 ℃, adding a solution of 0.3 part of initiator and 8 parts of water, and carrying out heat preservation reaction for 0.5 h; dropwise adding 0.5 part of initiator and 15 parts of water solution, 16 parts of organic silicon monomer and 13 parts of organic fluorine monomer, and finishing dropping within 2 hours; heating to 85 ℃, continuing to perform heat preservation reaction for 1h, and then cooling to below 50 ℃ to obtain the waterproof agent emulsion.

The preparation method of the benzophenone siloxane in the modified nano-silica sol comprises the following steps: a. under the protection of nitrogen, 3-isocyanate propyl trimethoxy silane and 2-hydroxy-4-methoxy benzophenone are added into a reactor according to the mol ratio of 1.02:1, stannous octoate accounting for 0.5 percent of the mass of the 3-isocyanate propyl trimethoxy silane is added, and the mixture is stirred and reacted for 5 hours at the temperature of 70 ℃ to obtain the benzophenone siloxane. The reaction formula is shown as (1).

The organosilicon monomer in the synthesis of the waterproof agent emulsion is prepared by the reaction of hydroxyethyl methacrylamide and trimethylchlorosilane, and the method comprises the following steps:

dissolving 0.4mol of ethanolamine and 0.2mol of triethylamine in 100m L dichloromethane, slowly adding a solution of 0.2mol of methacryloyl chloride and 100m L dichloromethane in an ice bath, reacting at 0 ℃ for 5h, then reacting at normal temperature for 20h, filtering to remove triethylamine hydrochloride, introducing dry HCl gas into the filtrate until the system is neutral, and filtering to remove hydrochloride to obtain hydroxyethyl methacrylamide;

dissolving 0.1mol of hydroxyethyl methacrylamide in 120m L tetrahydrofuran, adding 0.1mol of triethylamine, dropwise adding 0.1mol of trimethylchlorosilane and 100m L tetrahydrofuran solution under the ice bath condition, reacting at normal temperature for 48h after dropwise adding, removing triethylamine hydrochloride, extracting with diethyl ether, washing with 0.1 mol/L NaOH, and drying to obtain methacrylamido trimethylsilane, wherein the reaction formula is shown in (2).

The surface layer isThe material is 100D +40D terylene four-side stretch fabric with the gram weight of 130g/m²。

The lining fabric is 100D/144F terylene polar fleece with the gram weight of 160g/m²。

The foamed film is a TPU foamed film, and the thickness of the foamed film is 0.015 mm.

The binder consists of a thickening agent, an adhesive and a cross-linking agent, wherein the mass ratio of the adhesive to the cross-linking agent is 100: 0.5. the thickener is synthetic thickener JAZ (Federal science and speciality chemical Co., Ltd., Shijiazhuang), the adhesive is adhesive NH-110 (Federal science and speciality chemical Co., Ltd., Shijiazhuang), and the cross-linking agent is normal temperature cross-linking GX-100 (Federal science and speciality chemical Co., Ltd., Shijiazhuang).

When the adhesive is prepared, the thickening agent is slowly added into the adhesive, the mixture is stirred and thickened, the viscosity is adjusted to 5000-6000mPa.s, and finally the cross-linking agent is added.

The organic fluorine monomer is trifluoroethyl acrylate.

The initiator is sodium persulfate.

The emulsifier is prepared from sodium dodecyl benzene sulfonate and OP-10 in a mass ratio of 2: 1.