PU (polyurethane) coated skin and preparation method thereof

A production method and polyurethane technology, applied in the field of chemical products, can solve the problems of increasing the production cost of PU skin, high price, and restricting industrial application, etc., and achieve good physical properties and economic performance, clear texture, and good economical effect

Inactive Publication Date: 2017-01-11
SHANGHAI HUATE AUTOMOTIVE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two patents are prepared based on aliphatic isocyanate system, but as we all know, the high price of ali

Method used

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  • PU (polyurethane) coated skin and preparation method thereof
  • PU (polyurethane) coated skin and preparation method thereof
  • PU (polyurethane) coated skin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0034] The formula of product is as shown in table 1:

[0035] Table 1

[0036]

[0037]

[0038] The raw materials stated in the table are:

[0039] GEP-330N: Highly active polyether polyol, hydroxyl value 35mg KOH / g, functionality 3, Sinopec Shanghai Gaoqiao Branch;

[0040] GPOP-H45: Highly active polymer polyether polyol, hydroxyl value 21mg KOH / g, functionality 3, Sinopec Shanghai Gaoqiao Branch;

[0041] GEP-828: Highly active polyether polyol, hydroxyl value 28mg KOH / g, functionality 3, Sinopec Shanghai Gaoqiao Branch;

[0042] Diethanolamine: commercially available;

[0043] Triethanolamine: commercially available;

[0044] Ethylene glycol: commercially available;

[0045] Butanediol: commercially available;

[0046] Triethylenediamine: American Air Products Company;

[0047] Organotin catalyst: American Momentive Company;

[0048] Organobismuth / zinc catalyst: Shepherd Chemical Company;

[0049] Other additives: surfactants, antioxidants, light stabilize...

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Abstract

A PU (polyurethane) coated skin comprises surface skin and inner skin, wherein the surface skin is prepared from an aliphatic diisocyanate component a1 and a polyalcohol composite material b1 through a reaction, and the inner skin is prepared from an aromatic isocyanate a2 and a polyalcohol composite material b2 through a reaction. A preparation method of the PU coated skin comprises following steps: A), the aliphatic diisocyanate component a1 and the polyalcohol composite material b1 are sprayed to a heated mold and subjected to the reaction, and the surface skin is formed; B), the aromatic isocyanate a2 and the polyalcohol composite material b2 are sprayed to the surface skin and subjected to a reaction, and the inner skin is formed. The skin prepared with the method has the advantages of having clear texture, touching comfortable, being resistant to light aging and scraping, containing low VOC (volatile organic compounds) and containing no forbidden heavy metal ions, has good physical properties and economic performance, and is particularly suitable for being used as the material for surface coatings of interior dashboards and auxiliary dashboards of automobiles and motorcycles, surface coatings of armrests and glove boxes, seat covers and the like.

Description

technical field [0001] The invention relates to chemical products, in particular to a polyurethane spray-coated skin and a manufacturing method thereof. Background technique [0002] China is one of the largest automobile production and sales countries in the world. In recent years, my country's automobile industry has maintained steady and rapid growth. Taking 2014 as an example, the production and sales of automobiles reached 23.7229 million and 23.4919 million respectively, a year-on-year increase of 7.26% and 6.86%, and the supporting automotive interior industry has also been booming. [0003] With the improvement of living standards, people have higher and higher requirements for the environmental protection and comfort of automobile interiors. As one of the important materials of automotive interiors, skin cladding materials such as instrument panels, glove boxes, and armrests are also highly valued by people. Traditional hard plastic and semi-hard plastic skin inte...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/32C08G18/48
CPCC08G18/6688C08G18/3206C08G18/3275C08G18/3281C08G18/4816C08G18/4829
Inventor 李小斌
Owner SHANGHAI HUATE AUTOMOTIVE PARTS
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