High-cohesiveness polyurethane material for automobile glass edge covering and preparation method thereof

A polyurethane material and automotive glass technology, applied in the field of polyurethane materials, can solve the problems of increasing labor intensity, affecting production efficiency, increasing energy consumption, etc., and achieve the effects of reducing labor intensity, improving production efficiency, and reducing energy consumption

Pending Publication Date: 2020-10-02
南京汇科高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the preheating process of iron parts increases energy consumption, and on the other hand, it also increases the labor intensity of workers, which affects production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0040] Preparation of component A: Add 40.3 parts of pure MDI and 40.3 parts of MDI-50 into the reaction kettle, blow in nitrogen, heat to 60°C, and drop 19.4 parts of polyether polyol with a molecular weight of 560 into the kettle while stirring, After the dropwise addition, keep the temperature at 60-90°C for 2-3 hours to obtain a prepolymer with an NCO content of 23%, which is component A.

[0041]Preparation of component B: polyether 3600: 80.8 parts, 1.4-butanediol: 11 parts, 2,4-diamino-3-methylthio-5-propyltoluene: 2 parts, triethylenediamine catalyst 0.5 parts, 0.2 parts of dibutyltin dithiolate, 1.0 parts of 2-(2'-hydroxy-3',5'-di-tert-butylphenyl) benzotriazole, bis(1,2,2,6,6 - 1.0 parts of pentamethyl-4-piperidinyl) sebacate, 1.0 parts of 3,5-di-tert-butyl-4-hydroxyphenyl propionate, 1.0 parts of octadecyl quaternary alcohol ester, tris(nonylbenzene) phosphite ) 0.5 parts of ester, 2.0 parts of pigment, after mixing evenly, you can get B component, control the mois...

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PUM

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Abstract

The invention provides a high-cohesiveness polyurethane material for edge covering of automotive glass, which is prepared from a component A and a component B in a weight ratio of (30-70) : 100 by adopting a reaction injection molding process, wherein the component A is aromatic isocyanate which is a prepolymer modified by diisocyanate or polyisocyanate, the NCO is 18 to 28 percent, and the viscosity is 100 to 1,000 mPa.s; the component B comprises: B1: polyether / polyester polyol with functionality of 2-4 and molecular weight of 1000-10000, and the use amount of the polyether / polyester polyolaccounts for 60-90% of the weight of the component B; a component B2: a chain extender / cross-linking agent with the functionality of 2-4 and the molecular weight of 50-500, and the dosage of the chainextender / cross-linking agent accounts for 2-20% of the weight of the component B; a component B3: a catalyst which comprises an organic metal catalyst and an amine catalyst and accounts for 0.1-5.0%of the weight of the component B; a component B4: an anti-aging agent comprising a light stabilizer, an ultraviolet absorbent and an antioxidant, wherein the dosage of the anti-aging agent accounts for 2-10% of the weight of the component B; and B5: pigment accounting for 1-5% of the weight of the component B. According to the polyurethane material provided by the invention, an iron piece is directly used for production without preheating, the production efficiency is improved, and energy conservation and consumption reduction are realized.

Description

technical field [0001] The invention relates to the field of polyurethane materials, in particular to a high-adhesive polyurethane material for wrapping automotive glass. Background technique [0002] The reaction injection molding (RIM) process is a molding technology developed in the 1970s. It integrates liquid delivery, metering, impact mixing, and rapid reaction molding. Large adjustable range and high production efficiency. In the early 1990s, foreign countries began to introduce reaction injection molding polyurethane elastomer technology into the production of window seals. In this process, the polyurethane stock solution is preheated, metered, mixed with high-pressure collision of the mixing head, and injected into the cavity of the mold clamped around the glass. Fast curing (within 60 seconds), so that the sealing strip and the glass can be combined into a whole at one time, which simplifies the traditional operation process, shortens the operation time, and greatl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/10C08G18/32C08G18/48C08L75/08
CPCC08G18/10C08G18/3206C08G18/48C08L75/08C08G18/6674
Inventor 宋聪梅陈艳明吴卫东丁力
Owner 南京汇科高分子材料有限公司
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