High-temperature-resistant water-based environment-friendly adhesive and preparation method thereof

A high temperature resistant and adhesive technology, applied in the field of high temperature resistant water-based environmentally friendly adhesives and their preparation, can solve problems such as the decrease in bond strength, and achieve the effects of high temperature hydrolysis resistance and high bond strength.

Inactive Publication Date: 2021-06-18
广州菩曦环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high temperature resistant water-based environmentally friendly adhesive and its preparation method, which solves the problem of the decrease of the bond strength of the water-based polyurethane adhesive in the prior art under high temperature conditions

Method used

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  • High-temperature-resistant water-based environment-friendly adhesive and preparation method thereof
  • High-temperature-resistant water-based environment-friendly adhesive and preparation method thereof
  • High-temperature-resistant water-based environment-friendly adhesive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A high temperature resistant water-based environmentally friendly adhesive, comprising the following raw materials in parts by weight: 60 parts of modified polyurethane prepolymer, 30 parts of modified acrylic resin, 10 parts of coupling agent, 15 parts of polyvinyl alcohol, 20 parts of crosslinking agent and deionized 300 parts of water;

[0036] The preparation method of this kind of high temperature resistant water-based environmental protection adhesive specifically comprises the following steps:

[0037] Step S1: Add the modified polyurethane prepolymer, modified acrylic resin, coupling agent and polyvinyl alcohol in parts by weight of the formula into the mixing tank respectively, and stir and mix evenly under the condition that the rotation speed is 160r / min, and then The temperature was raised to 60°C, and the heat preservation treatment was carried out for 2 hours to obtain the modified polyurethane base material;

[0038]Step S2: Add the modified polyurethane...

Embodiment 2

[0055] A high temperature resistant water-based environmentally friendly adhesive, comprising the following raw materials in parts by weight: 70 parts of modified polyurethane prepolymer, 34 parts of modified acrylic resin, 12 parts of coupling agent, 18 parts of polyvinyl alcohol, 24 parts of crosslinking agent and deionized 330 parts of water;

[0056] The preparation method of this kind of high temperature resistant water-based environmental protection adhesive specifically comprises the following steps:

[0057] Step S1: Add the modified polyurethane prepolymer, modified acrylic resin, coupling agent and polyvinyl alcohol in parts by weight of the formula into the mixing tank respectively, and stir and mix evenly under the condition that the rotation speed is 170r / min, and then The temperature was raised to 70°C, and the heat preservation treatment was carried out for 3 hours to obtain the modified polyurethane base material;

[0058] Step S2: Add the modified polyurethan...

Embodiment 3

[0075] A high temperature resistant water-based environmentally friendly adhesive, comprising the following raw materials in parts by weight: 70 parts of modified polyurethane prepolymer, 38 parts of modified acrylic resin, 18 parts of coupling agent, 18 parts of polyvinyl alcohol, 25 parts of crosslinking agent and deionized 360 parts of water;

[0076] The preparation method of this kind of high temperature resistant water-based environmental protection adhesive specifically comprises the following steps:

[0077] Step S1: Add the modified polyurethane prepolymer, modified acrylic resin, coupling agent and polyvinyl alcohol in parts by weight of the formula into the mixing tank respectively, and stir and mix evenly under the condition that the rotation speed is 170r / min, and then The temperature was raised to 70°C, and the heat preservation treatment was carried out for 3 hours to obtain the modified polyurethane base material;

[0078] Step S2: Add the modified polyurethan...

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Abstract

The invention discloses a high-temperature-resistant water-based environment-friendly adhesive and a preparation method thereof. The high-temperature-resistant water-based environment-friendly adhesive comprises the following raw materials in parts by weight: 60-80 parts of a modified polyurethane prepolymer, 30-40 parts of a modified acrylic resin, 10-20 parts of a coupling agent, 15-20 parts of polyvinyl alcohol, 20-30 parts of a cross-linking agent and 300-400 parts of deionized water. The preparation method comprises the following steps: S1, preparing a modified polyurethane base material; and S2, carrying out a cross-linking reaction by using deionized water as a solvent to obtain the high-temperature water-based environment-friendly adhesive. According to the invention, a modified polyurethane prepolymer containing a large number of benzene rings and silicon-oxygen bonds is prepared, so that the prepared adhesive has relatively large crosslinking density, relatively high bond energy and relatively good thermal stability; and the problem that in the prior art, the bonding strength of a waterborne polyurethane adhesive is reduced under the high-temperature condition is solved.

Description

technical field [0001] The invention belongs to the technical field of water-based adhesives, and in particular relates to a high-temperature-resistant water-based environmentally friendly adhesive and a preparation method thereof. Background technique [0002] High-temperature resistant adhesives are widely used in high-tech fields such as aerospace, electronics, automobiles, and machinery manufacturing. With the rapid development of science and technology, the heat resistance requirements of adhesives in special environments are getting higher and higher. [0003] Waterborne polyurethane adhesive refers to the adhesive formed by dissolving or dispersing polyurethane in water. Today, when environmental protection and health and safety issues are widely concerned, water-based adhesives use water as the basic medium, which has the characteristics of non-combustibility, low odor, no pollution to the environment, energy saving, and convenient operation and processing. The wor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J125/14C09J11/08C08G63/183C08G63/85C08G18/77C08F212/08C08F220/06C08F218/08C08F220/34
CPCC08F212/08C08G18/778C08G63/183C08G63/85C08L2205/03C09J11/08C09J175/06C08L25/14C08L29/04C08F220/06C08F218/08C08F220/34
Inventor 黄蓉
Owner 广州菩曦环保科技有限公司
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