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A kind of two-component polyurethane resin for automobile leather and preparation method thereof

A two-component polyurethane and automotive leather technology, applied in the field of automotive leather production, can solve the problems affecting the service life of the product, low mechanical properties, etc., and achieve the effect of improving the safety of use, high peel strength and good breaking strength

Active Publication Date: 2021-06-18
JIAXING HEXIN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the existing technology still has insufficient peel strength, which limits its application range; and the mechanical properties of the prior art are also low, which affects the service life of the product, the first purpose of the application is to provide an automobile Two-component polyurethane resin for leather, this product can improve the physical properties of automotive leather as an adhesive for the surface layer resin, with high bonding fastness, high peel strength, not easy to delaminate, excellent elongation and breaking strength of the resin film Better, with a longer service life

Method used

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  • A kind of two-component polyurethane resin for automobile leather and preparation method thereof
  • A kind of two-component polyurethane resin for automobile leather and preparation method thereof
  • A kind of two-component polyurethane resin for automobile leather and preparation method thereof

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preparation example 1

[0044] Preparation of flame retardant: the flame retardant is composed of a liquid rare earth stabilizer (liquid rare earth stabilizer RE120, Beijing Institute of Addition Auxiliaries, industrial grade) accounting for 23.4% of the total mass of the flame retardant, accounting for 23.4% of the total mass of the flame retardant 22.4% of magnesium hydroxide, silicon dioxide accounting for 8.5% of the total mass of the flame retardant, aluminum hydroxide accounting for 18.0% of the total mass of the flame retardant, and dimethylmethane phosphate accounting for 17.7% of the total mass of the flame retardant.

preparation example 2

[0046] Preparation of flame retardant: the flame retardant is composed of a liquid rare earth stabilizer (liquid rare earth stabilizer RE120, Beijing Institute of Addition Auxiliaries, industrial grade) accounting for 38.6% of the total mass of the flame retardant, accounting for 38.6% of the total mass of the flame retardant 18.4% of magnesium hydroxide, silicon dioxide accounting for 7.2% of the total mass of the flame retardant, aluminum hydroxide accounting for 18.0% of the total mass of the flame retardant, and dimethylmethane phosphate accounting for 17.8% of the total mass of the flame retardant.

preparation example 3

[0048] Preparation of surface layer resin: a water-based surface layer polyurethane resin for automobile leather, polymerized by raw materials comprising the following parts by weight: 43 parts of caprolactone polycarbonate diol with a molecular weight of 2000, 5 parts of HDI, 20 parts H12MDI, 0.08 parts of organic bismuth, 3 parts of 1,5-pentanediol, 3.5 parts of DMPA, 20 parts of acetone, 2 parts of dimethylethanolamine, 60 parts of deionized water, and 1.0 part of liquid rare earth stabilizer. A method for preparing a water-based surface layer polyurethane resin for automobile leather, specifically: at a stirring speed of 150 rpm, sequentially add 43 parts of caprolactone-type polycarbonate diol with a molecular weight of 2000, 5 parts of HDI, and 20 parts of H12MDI , 0.08 parts of organic bismuth, reacted at 88.9 ° C for 2.0 hours; then added 3 parts of 1,5-pentanediol, 3.5 parts of DMPA, 20 parts of acetone, 1.0 parts of liquid rare earth stabilizer, at a stirring speed of...

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Abstract

The application relates to the technical field of automobile leather production, in particular to a two-component polyurethane resin for automobile leather, which includes component A and component B, and component A is prepared from raw materials containing the following parts by weight: polyol, anti- Oxygen agent, foam stabilizer, leveling agent, dispersant, waterproofing agent, chain extender; component B is prepared from the following raw materials by weight: caprolactone polycarbonate polyol, PTMEG, isocyanate, anti Oxygen. As an adhesive for surface layer resin, this product can improve the physical properties of automobile leather, and has the advantages of high lamination fastness, high peel strength, not easy to delaminate, and better elongation and breaking strength of the resin film. The preparation method comprises the following steps: weighing the materials according to the proportion, stirring and mixing at 60-80°C for 0.5-1 hour, adding a chain extender, stirring and mixing for 2-3 hours; weighing the materials according to the proportion, Stirring and mixing at ~80°C for 1-2 hours; stirring and mixing to obtain the target product; the method has the effect of simple preparation and operation and convenient mass production.

Description

technical field [0001] The application relates to the technical field of automobile leather production, in particular to a two-component polyurethane resin for automobile leather and a preparation method thereof. Background technique [0002] In the past 20 years, the production of synthetic leather in my country has developed extremely rapidly, and has considerable industrial scale and competitive strength. Especially in recent years, the annual growth rate of my country's PU leather market has reached 17% to 29%, and it has gradually become one of the main driving forces for the development of global PU leather, and even the main driving force for promoting the development of the entire polyurethane market. According to incomplete statistics, the national output of synthetic leather was 2.8 billion square meters in 2007 and 3.32 billion square meters in 2008. In 2010, there were more than 2,600 manufacturers of artificial leather and synthetic leather in my country, includ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08L83/04C08K13/02C08K3/22C08K3/36C08K5/521C08K5/098C08G18/44C08G18/48C08G18/40
CPCC08G18/4018C08G18/44C08G18/48C08K2003/2224C08L75/04C08L2205/025C08L2205/03C08L83/04C08K13/02C08K3/22C08K3/36C08K5/521C08K5/098
Inventor 石磊赵磊纪尚超晏雪生冯敏超杨锐刘为凯
Owner JIAXING HEXIN CHEM IND