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High-strength high-elasticity two-component polyurethane structural adhesive and preparation method thereof

A two-component polyurethane, high-elasticity technology, applied in polyurea/polyurethane adhesives, adhesives, non-polymer adhesive additives, etc., can solve problems such as user impact, save energy and improve heat resistance , the effect of large adjustable range

Inactive Publication Date: 2022-05-13
东莞市承林电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the use of solvent-based polyurethane adhesives, the solvent will volatilize in the air, which will affect the external environment and the user's body.

Method used

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  • High-strength high-elasticity two-component polyurethane structural adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The invention provides a high-strength and high-elasticity two-component polyurethane structural adhesive. The high-strength and high-elasticity two-component polyurethane structural adhesive is composed of an adhesive A component and a curing agent B component;

[0027] The raw materials of the adhesive A component include liquefied modified diphenylmethane-4,4-diisocyanate, epoxy resin, refined castor oil, reactive diluent, catalyst and curing agent filler, and the curing agent B component is Phenalkamine curing agent, diethylenetriamine and formaldehyde solution, the ratio of the adhesive A component to the curing agent B component is 5:3.

specific Embodiment approach

[0028] As a specific embodiment of the present invention, the raw material parts by mass of the raw materials of the A component are: 40 parts of liquefied modified diphenylmethane-4,4-diisocyanate, 5 parts of epoxy resin, refined castor oil 20 parts, 15 parts of reactive diluent, 1 part of catalyst and 19 parts of curing agent filler, described reactive diluent is a kind of in propylene oxide butyl ether, propylene oxide butyl ether and lauryl glycidyl ether or more, the catalyst is one or more of di-n-butylamine or azobisbutyronitrile, and the mass fraction of raw materials of the curing agent B component is 60 parts of phenalkamine curing agent, two 20 parts of ethylene triamine and 20 parts of formaldehyde solution, and the B component of the curing agent can also be one of polyetheramine or polyamide.

[0029] As a specific embodiment of the present invention, the curing agent filler is one of modified calcium carbonate, calcium sulfate or barium sulfate, and its modifica...

Embodiment 3

[0048] The present invention provides a high-strength and high-elasticity two-component polyurethane structural adhesive. 1. The high-strength and high-elasticity two-component polyurethane structural adhesive is composed of an adhesive A component and a curing agent B component;

[0049] The raw materials of the adhesive A component include liquefied modified diphenylmethane-4,4-diisocyanate, epoxy resin, refined castor oil, reactive diluent, catalyst and curing agent filler, and the curing agent B component is Phenalkamine curing agent, diethylenetriamine and formaldehyde solution, the ratio of the adhesive A component to the curing agent B component is 5:3.

[0050] As a specific embodiment of the present invention, the raw material parts by mass of the raw materials of the A component are: 30 parts of liquefied modified diphenylmethane-4,4-diisocyanate, 15 parts of epoxy resin, refined castor oil 25 parts, 15 parts of reactive diluent, 2 parts of catalyst and 18 parts of c...

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Abstract

The embodiment of the invention discloses a high-strength and high-elasticity two-component polyurethane structural adhesive and a preparation method thereof. The high-strength and high-elasticity two-component polyurethane structural adhesive is prepared from an adhesive component A and a curing agent component B, the raw materials of the adhesive component A comprise liquefied modified diphenylmethane-4, 4-diisocyanate, epoxy resin, refined castor oil, a reactive diluent, a catalyst and a curing agent filler, and the curing agent component B comprises a phenolic aldehyde amine curing agent, diethylenetriamine and a formaldehyde solution. The double-component polyurethane adhesive has better safety and environmental protection property; the two-component polyurethane adhesive has good initial adhesion and good bonding strength after being mixed, a drying system and a heating system are not needed, and energy is saved; the adjustability is good, and different types of solvent-free polyurethane adhesives can be prepared by changing the raw material components and molecular weight; low temperature resistance and good flexibility are realized.

Description

technical field [0001] The invention relates to the technical field of polyurethane structural adhesives, in particular to a high-strength and high-elasticity two-component polyurethane structural adhesive and a preparation method thereof. Background technique [0002] Adhesives are mainly divided into two categories: single-component and multi-component. Among them, multi-component adhesives are separated from the curing agent and the main agent. After mixing the two during use, the materials that need to be bonded together can be tightly combined. chemical products. Adhesives are widely used in manufacturing, medicine, decoration, mobile phone electronics and automobiles. As a country with a large population and a large industry, my country has a great demand for adhesives, which also leads to an increase in the production of adhesives in our country year by year. In 2015, the output of adhesives reached 6.87 million tons, and the consumption reached 84.4 billion yuan. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J11/04
CPCC09J175/14C09J11/04C08K2003/265C08K2003/3045C08L2201/08C08K9/06C08K3/26C08K3/30
Inventor 吴光强江祥祥
Owner 东莞市承林电子有限公司
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