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Water-based adhesive for automotive interior as well as preparation method and application of adhesive

A technology for automotive interiors and adhesives, applied in adhesive types, polyurea/polyurethane adhesives, adhesives, etc., can solve problems such as not describing the pre-coating process

Active Publication Date: 2019-07-02
WANHUA CHEMICAL (NINGBO) CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main ingredients in the formula are water-based polyurethane dispersion with an activation temperature above 60°C, water-based polyurethane dispersion with an activation temperature of 45-60°C, and VAE emulsion, but the patent does not describe that it can be applied to the pre-coating process
[0009] CN201410193197.5 describes a water-based polyurethane adhesive for automotive interiors and its preparation method. The patent is mainly composed of water-based polyurethane dispersion and some conventional additives, but the patented product is a two-component product, which needs to be added with a water-based curing agent. use

Method used

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  • Water-based adhesive for automotive interior as well as preparation method and application of adhesive
  • Water-based adhesive for automotive interior as well as preparation method and application of adhesive
  • Water-based adhesive for automotive interior as well as preparation method and application of adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A kind of water-based automotive interior adhesive is made up of the following components by weight:

[0055]

[0056] The raw materials used in embodiment 1 are as follows, aqueous polyurethane dispersion (Raw material composition: hexamethylene diisocyanate, 4,4'-dicyclohexylmethane diisocyanate, polybutylene adipate, N-(2-aminoethyl)-2-aminoethanesulfonate ): solid content of 50±1wt.%, Wanhua Chemical Group Co., Ltd.; aqueous polyurethane dispersion (Raw material composition: hexamethylene diisocyanate, polybutylene adipate, polyester diol composed of 1,6-hexanediol, neopentyl glycol and adipic acid, sulfonate type hydrophilic Hydrate, N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane): solid content of 50±1wt.%, Wanhua Chemical Group Co., Ltd.; defoamer BYK-024: Qingdao Hua Ling Chemical Products Co., Ltd.; wetting agent TEGO-KL245: Nanjing Hanbao Industrial Raw Materials Co., Ltd.; thickener Wanhua Chemical Group Co., Ltd.

[0057] The pre-coating process of...

Embodiment 2

[0090] A kind of water-based automotive interior adhesive for pre-coating process is made up of the following components by weight:

[0091]

[0092] In this example, defoamer BYK-022 and wetting agent BYK-349: Qingdao Hualing Chemical Products Co., Ltd.; thickener Wanhua Chemical Group Co., Ltd.

[0093] Aqueous polyurethane dispersion B preparation:

[0094] 150g of dehydrated polyadipate-1,4-butylene glycol ester diol (OH value=56mg KOH / g), 60g of dehydrated 1,6-hexanediol, neopentyl glycol and hexane The polyester diol (OH value=74mg KOH / g) that diacid forms, 28.5g hexamethylene diisocyanate, 3.15g the monofunctional polyethoxy ether (average molecular weight 520g / mol, MPEG520) of dehydration treatment , LG Chemical), 24g of acetone into a 1L four-necked round-bottomed flask equipped with a nitrogen inlet and outlet, and the mixture was stirred at 80° C. until NCO reached a theoretical value of 1.63%. The prepolymer was dissolved in 405 g of acetone and cooled to 50...

Embodiment 3

[0116] A kind of water-based automotive interior adhesive for pre-coating process is made up of the following components by weight:

[0117]

[0118] In this example, the aqueous polyurethane dispersion Covestro; defoamer BYK-020: Qingdao Hualing Chemical Products Co., Ltd.; wetting agent TEGO-KL245: Nanjing Hanbao Industrial Raw Materials Co., Ltd.; thickener Wanhua Chemical Group Co., Ltd.

[0119] Aqueous polyurethane dispersion B preparation:

[0120]120g of dehydrated polyadipate-1,4-butylene glycol ester diol (OH value=56mg KOH / g), 40g of dehydrated 1,6-hexanediol, neopentyl glycol and hexane Polyester diol composed of diacid (OH value=74mg KOH / g), 10g dehydrated polyadipate-1,4-butylene glycol ester diol (OH value=112mgKOH / g), 18.35g six Methylene diisocyanate, a mixture of 10g 4,4'-dicyclohexylmethane diisocyanate, 2g dehydration-treated monofunctional polyethoxy ether (average molecular weight 1200g / mol, MPEG1200, LG Chemical), 25g Acetone was added into a 1L...

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PUM

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Abstract

The invention discloses a water-based adhesive for automotive interior and a preparation method of the adhesive. The adhesive comprises the following components, in parts by weight: 30-50 parts of a water-based polyurethane dispersion A, 50-70 parts of a water-based polyurethane dispersion B, 0.03-0.08 part of an antifoaming agent, 0.1-0.3 part of a wetting agent, and 0.02-0.05 part of a thickening agent; and the adhesive is obtained by mixing the above components. The adhesive provided by the invention can be used for bonding of plastic skeletons such as automotive interior door boards and instrument boards to surface layers, and can be used for a pre-coating process; and compared with a traditional two-component adhesive, the adhesive provided by the invention not only saves complicatedprocesses of mixing and spraying of two-component glue on a traditional process site, but also relieves limitation of use time of the two-component glue; and the method is easy to operate, and greatlyimproves production efficiency.

Description

technical field [0001] The invention relates to an adhesive, in particular to a water-based automotive interior adhesive, a preparation method and application thereof. Background technique [0002] With the improvement of people's living standards, the demand for family passenger cars is increasing. The global annual production of passenger cars is about 90 million. At present, my country has become the world's largest passenger car manufacturer, with an annual production of about At 25 million vehicles. There are also various materials used for automotive interior decoration, including plastics, leather, fabrics, sponges, wood, etc., as well as coatings for surface decoration and adhesives for bonding various materials, all of which contain toxic substances. Volatile, and can not be volatilized for a long time, seriously endangering the physical and mental health of human beings. [0003] The adhesives used in traditional automotive interior parts are basically solvent-bas...

Claims

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Application Information

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IPC IPC(8): C09J175/06C09J11/00C08G18/66C08G18/42C08G18/32C08G18/12
CPCC08G18/12C08G18/3855C08G18/3893C08G18/4202C08G18/4238C08G18/6651C09J11/00C09J175/06C08L75/06C08G18/3234
Inventor 李飞王海梅纪学顺曹玉阳孙家宽
Owner WANHUA CHEMICAL (NINGBO) CO LTD
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