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Adhesive used adhesion promoter, and synthetic method and applications thereof

A technology of adhesion promoter and synthesis method, applied in the direction of adhesive additives, adhesives, non-polymer adhesive additives, etc., can solve the problem of poor wear resistance and tear strength, low strength, silane-modified resin sealant problems such as low strength, to achieve the effect of improving adhesion and simple operation

Inactive Publication Date: 2015-12-23
SHANGHAI DIMU NEW MATERIAL TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silicone adhesives have a wide range of bonding and basically do not use primers, but due to their low strength, poor wear resistance and tear strength, most of them are used as sealants rather than structural adhesives
Silane-modified resin sealants include silane-modified polyurethane sealant (SPU) and silane-modified polyether sealant (MS), which have good weather resistance, water resistance, heat resistance, aging resistance, good process operability, and environmental protection. Friendliness and other advantages have been developed rapidly in Japan, Europe and the United States, and are still in the promotion stage in China; the strength of silane-modified resin sealant is low, and it is also not suitable for high-shear fields

Method used

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  • Adhesive used adhesion promoter, and synthetic method and applications thereof
  • Adhesive used adhesion promoter, and synthetic method and applications thereof
  • Adhesive used adhesion promoter, and synthetic method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

comparative example 1

[0064] Replace the adhesion promoter IV in the formula of application example 1 with the common coupling agent γ-glycidyl etheroxypropyl trimethoxysilane, and the formula is as follows:

[0065]

[0066] The glue making process is as described in the application example 1, and the product of the comparative case 1 is obtained.

comparative example 2

[0068] Replace the adhesion promoter Ⅰ in the formula of application example 2 with the common coupling agent γ-aminopropyltriethoxysilane, and the formula is as follows:

[0069]

[0070]

[0071] The glue-making process is the same as the glue-making process in Application Example 2.

comparative example 3

[0073] Replace the adhesion promoter 3 in the formula of the application example 3 with the common coupling agent γ-aminopropyltriethoxysilane, and the formula is as follows:

[0074]

[0075] The glue-making process is as the glue-making process in Application Example 2.

[0076] Comparative Results:

[0077] Use the sealant 1-6 obtained from the application case and the comparison case to make shearing pieces of aluminum plate to aluminum plate respectively, without using primer, and place it under standard temperature and humidity for 1 week. The measured shear strength and damage are compared as follows surface:

[0078]

[0079] From the comparison of the above experimental results, it can be seen that the polyurethane sealant made by using the adhesion promoter formed by this patent scheme can achieve good adhesion to metal substrates, such as steel and aluminum, without using a primer. catch.

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PUM

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Abstract

The invention discloses an adhesive used adhesion promoter, and a synthetic method and applications thereof. The adhesion promoter is prepared by reacting isocyanate with a silane coupling agent with reactive hydrogen groups. The synthetic method comprises: firstly heating isocyanate to 50 DEG C; then slowly dropwise adding the silane coupling agent in a calculated amount; and carrying out a reaction at 60-70 DEG C for 1-5 hours to obtain the adhesion promoter. A polyurethane sealant prepared by using the adhesion promoter can be used for effectively bonding metal base materials such as steel materials, aluminum materials and the like without using a first coat, so that the effects of simple operation and environmental protection is achieved.

Description

technical field [0001] This patent relates to an adhesive, in particular to an adhesion promoter for an adhesive, a synthesis method and application of the adhesion promoter. Background technique [0002] With the development of science and technology, most of the bonding and sealing of automobile windshields and the bonding of concrete and aluminum panels in buildings will be achieved with adhesives. In order to achieve a good bonding effect and solve problems such as building and automobile leakage, in addition to requiring the adhesive to have high elongation and recovery, it is very important to have good bonding performance. [0003] Since there are many types of materials used in various industries, and some substrates are not easy to bond, it is often necessary to use a primer to promote bonding and achieve the necessary adhesion and shear strength. For example, polyurethane sealant is used to bond the windshield of a car to the metal body. Polyurethane sealant has g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J11/06C09J175/04C09J183/04C09J171/00C08G18/80
Inventor 卢亚伟曾高华艾飞张义
Owner SHANGHAI DIMU NEW MATERIAL TECH