阅读说明：本技术 一种建筑材料用聚氨酯保温一体化板材的制备方法 (Preparation method of polyurethane heat-insulation integrated plate for building material ) 是由 余焯兴 于 2020-08-05 设计创作，主要内容包括：本发明公开了一种建筑材料用聚氨酯保温一体化板材的制备方法,包括以下操作步骤：(1)将二聚酸稀土、钛石膏、水混合搅拌均匀后,加入黄麻纤维,继续混合搅拌均匀,制得填充料；(2)将PET薄膜的一面涂抹上二甲基硅油和N,N-二乙基丙炔胺硫酸盐的混合物后,然后在其表面放上成型模具；(3)将聚醚多元醇、阻燃剂、一氟二氯乙烷、分散剂、消泡剂、气相白炭黑混合搅拌均匀后,再加入异氰酸酯,将其倒入成型模具中,填满成型模具后,固化处理,脱模后制得聚氨酯保温一体化板材。本发明制得的聚氨酯保温一体化板材,具有优异的力学性能和保温性能,长时间使用后,表面的装饰材料不会发生脱落的现象。(The invention discloses a preparation method of a polyurethane heat-insulation integrated plate for a building material, which comprises the following operation steps: (1) mixing and stirring the dimer acid rare earth, the titanium gypsum and the water uniformly, adding the jute fiber, and continuously mixing and stirring uniformly to prepare the filler; (2) smearing a mixture of dimethyl silicone oil and N, N-diethyl propargylamine sulfate on one surface of a PET film, and then putting a forming die on the surface of the PET film; (3) mixing polyether polyol, a flame retardant, monofluorodichloroethane, a dispersing agent, a defoaming agent and fumed silica uniformly, adding isocyanate, pouring the mixture into a forming die, filling the forming die with the isocyanate, curing, and demolding to obtain the polyurethane heat-preservation integrated plate. The polyurethane heat-preservation integrated plate prepared by the invention has excellent mechanical property and heat-preservation property, and the decorative material on the surface can not fall off after long-time use.)

1. A preparation method of a polyurethane heat-insulation integrated plate for building materials is characterized by comprising the following operation steps:

(1) uniformly mixing and stirring the dimer acid rare earth, the titanium gypsum and the water according to the mass ratio of 6:35-45:250-300, adding jute fiber, and continuously and uniformly mixing and stirring to obtain the filler;

(2) smearing a mixture of dimethyl silicone oil and N, N-diethyl propargylamine sulfate on one surface of a PET film, and then putting a forming die on the surface of the PET film;

(3) mixing and stirring polyether polyol, a flame retardant, monofluorodichloroethane, a dispersing agent, a defoaming agent and fumed silica uniformly, adding isocyanate with the same mass as the polyether polyol, stirring quickly for 10-15 seconds, pouring the mixture into a forming mold, covering a PET film coated with a mixture of dimethyl silicone oil and N, N-diethyl propargylamine sulfate on one surface of the PET film after filling the forming mold, curing for 60-100min, and demolding to obtain the polyurethane heat-preservation integrated plate.

2. The method for preparing the polyurethane insulation integrated plate for the building material according to claim 1, wherein in the step (1), the dimer acid rare earth is prepared by the following method: slowly adding a sodium hydroxide aqueous solution with the mass fraction of 5% and the weight which is 3-5 times of that of the dimer acid into the dimer acid, continuously stirring for 30-40min to obtain a light yellow uniform transparent solution, then continuously adding an yttrium chloride aqueous solution with the mass of 10-15% of that of the solution into the solution, stirring and stirring uniformly, heating to 65-75 ℃, carrying out reaction treatment for 2-3 h to obtain a viscous jelly, pouring out a water layer, and cleaning the viscous jelly with distilled water to obtain the dimer acid rare earth.

3. The method for preparing the polyurethane insulation integrated board for building materials according to claim 1, wherein in the step (1), the jute fiber has a length of 5 to 10 cm.

4. The method for preparing the polyurethane insulation integrated plate for the building material as claimed in claim 1, wherein in the step (2), the mass ratio of the dimethyl silicone oil to the N, N-diethyl propynylamine sulfate is 3-5: 1.

5. The method for preparing the polyurethane insulation integrated plate for building materials as claimed in claim 4, wherein in the step (2), the amount of the mixture of the dimethyl silicone oil and the N, N-diethylpropargylamine sulfate coated on the PET film is 110-130g/m²。

6. The method for preparing the polyurethane thermal insulation integrated plate for the building material according to claim 1, wherein the flame retardant is any one of antimony trioxide, magnesium hydroxide and aluminum hydroxide.

7. The preparation method of the polyurethane heat-preservation integrated plate for the building materials as claimed in claim 1, wherein the dispersant is any one of sodium methylene dinaphthalenesulfonate and sodium methylene dinaphthalenesulfonate.

8. The preparation method of the polyurethane heat-preservation integrated plate for the building materials as claimed in claim 1, wherein the defoaming agent is any one of polyether modified silicone oil and fatty acid glyceride.

9. The preparation method of the polyurethane heat-preservation integrated plate for the building materials as claimed in claim 1, wherein the thickness of the forming mold is 20-35 mm.

Technical Field

The invention relates to the technical field of preparation of polyurethane insulation boards, in particular to a preparation method of a polyurethane insulation integrated board for building materials.

Background

The polycarbamate is abbreviated as polycarbamate and is a chemically synthesized polymer. They are generally synthesized by a simple molding process of mixing liquid isocyanuric acid vinegar, liquid polyether or polyester polyol and other additives (e.g., catalyst, blowing agent, surfactant, etc.) to form a polymer compound material having a NHCOO-group repeating unit. By changing the structure of the raw materials and adopting different proportions, polymers with linear or body-type structures and different hardness can be prepared. Polyurethane foams can be classified into flexible, semi-rigid, and the like, according to their foam hardness. Polyurethane foams hold a great importance among plastics, and are the most widespread class of polyurethane products. The demand for polyurethane foams is increasing in industry and in daily life, and the proportion of polyurethane foam in all polyurethane products is the largest, about 70%.

Today, foams have become an important part of the polymer industry, affecting almost every aspect of our daily lives. Because of the advantages of low density, high mechanical property, low thermal conductivity, dimensional stability, aging resistance, corrosion resistance, convenient processing, high aperture ratio and the like, the hard foam material is widely used as a heat preservation, heat insulation and sound absorption material in the fields of industrial buildings, refrigerators, chemical pipelines, transportation and the like. However, the existing polyurethane heat-insulating integrated plate for the building material is directly bonded with the decorative material by utilizing the foaming characteristic of polyurethane without any adhesive, so that the material cost is saved and the working procedures are reduced, but after the polyurethane is directly bonded with the decorative material, the effective period is short, the heat-insulating polyurethane material and the decorative material are placed in a normal environment for about one year, the phenomenon of viscosity reduction is generated between the heat-insulating polyurethane material and the decorative material, the decorative material is peeled off, the product appearance is influenced, and the phenomenon that people are injured by pounding the decorative material after the decorative material is peeled off is easily generated.

Disclosure of Invention

In order to solve the existing problems, the invention provides a preparation method of a polyurethane heat-insulation integrated plate for a building material.

The invention is realized by the following technical scheme:

a preparation method of a polyurethane heat-insulation integrated plate for building materials comprises the following operation steps:

(1) uniformly mixing and stirring the dimer acid rare earth, the titanium gypsum and the water according to the mass ratio of 6:35-45:250-300, adding jute fiber, and continuously and uniformly mixing and stirring to obtain the filler;

(2) smearing a mixture of dimethyl silicone oil and N, N-diethyl propargylamine sulfate on one surface of a PET film, and then putting a forming die on the surface of the PET film;

(3) mixing and stirring polyether polyol, a flame retardant, monofluorodichloroethane, a dispersing agent, a defoaming agent and fumed silica uniformly, adding isocyanate with the same mass as the polyether polyol, stirring quickly for 10-15 seconds, pouring the mixture into a forming mold, covering a PET film coated with a mixture of dimethyl silicone oil and N, N-diethyl propargylamine sulfate on one surface of the PET film after filling the forming mold, curing for 60-100min, and demolding to obtain the polyurethane heat-preservation integrated plate.

Specifically, in the step (1), the dimer acid rare earth is prepared by the following method: slowly adding a sodium hydroxide aqueous solution with the mass fraction of 5% and the weight which is 3-5 times of that of the dimer acid into the dimer acid, continuously stirring for 30-40min to obtain a light yellow uniform transparent solution, then continuously adding an yttrium chloride aqueous solution with the mass of 10-15% of that of the solution into the solution, stirring and stirring uniformly, heating to 65-75 ℃, carrying out reaction treatment for 2-3 h to obtain a viscous jelly, pouring out a water layer, and cleaning the viscous jelly with distilled water to obtain the dimer acid rare earth.

Specifically, in the step (1), the length of the jute fiber is 5 to 10 cm.

Specifically, in the step (2), the mass ratio of the simethicone to the N, N-diethylpropargylamine sulfate is 3-5: 1.

Specifically, in the step (2), the amount of the mixture of the dimethyl silicone oil and the N, N-diethyl propargylamine sulfate coated on the PET film is 110-130g/m²。

Specifically, the flame retardant is any one of antimony trioxide, magnesium hydroxide and aluminum hydroxide.

Specifically, the dispersant is any one of sodium methylene dinaphthalene sulfonate and sodium methylene dinaphthalene sulfonate.

Specifically, the defoaming agent is any one of polyether modified silicone oil and fatty acid glyceride.

Specifically, the thickness of the forming die is 20-35 mm.

According to the technical scheme, the beneficial effects of the invention are as follows:

the polyurethane heat-insulation integrated plate prepared by the method provided by the invention has excellent impact resistance and deformation recovery capability, is remarkable in heat-insulation performance, and particularly has no phenomenon that the decorative material on the surface falls off after being used for a long time. Although the addition of the titanium gypsum reduces the heat insulation performance of the polyurethane heat insulation integrated plate to a certain extent, the addition of the jute fiber can improve the stability of the internal void structure of the polyurethane material and the distribution uniformity of the solid gas mixed structure in the polyurethane material, thereby effectively ensuring the heat insulation performance of the polyurethane heat insulation integrated plate; according to the invention, by adding the titanium gypsum and the jute fiber, the polyurethane heat-insulation integrated plate can bear a part of pressure when being subjected to the action of external pressure, so that the phenomenon that a polyurethane material deforms in the using process is effectively avoided, and the phenomenon that the polyurethane material and a PET film are debonded is further avoided; the addition of the dimer acid rare earth can effectively improve the stability of the interpenetrating network structure among the polyurethane material, the titanium gypsum and the jute fiber, thereby effectively ensuring the function of the titanium gypsum and the jute fiber; according to the invention, the polyurethane material is adhered to the PET film, the compatibility between the polyurethane material and the PET film is strong, the difference of the interface between the polyurethane material and the PET film is small, and the adhesion force between the polyurethane material and the PET film is strong.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to examples, but those skilled in the art will understand the following invention, which should not be construed as limiting the scope of the invention. The examples do not show specific conditions, and the conventional conditions are only used for illustration or conditions suggested by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.