Double-component epoxy modified silane end-capped polypropylene oxide sealant and preparation method thereof

A polypropylene oxide and silane-capped technology, which is applied in the direction of epoxy resin adhesives, chemical instruments and methods, adhesives, etc., can solve the problems of no patent reports, etc., and achieve improved tensile shear strength, good weather resistance, and adhesion The effect of excellent performance

Inactive Publication Date: 2018-08-24
GUANGZHOU MECHANICAL ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] There is no relevant patent report

Method used

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  • Double-component epoxy modified silane end-capped polypropylene oxide sealant and preparation method thereof

Examples

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Embodiment 1

[0032] A kind of embodiment of the preparation method of two-component epoxy-modified silane-terminated polypropylene oxide sealant of the present invention, comprises the following steps:

[0033] (1) the bisphenol A type epoxy resin of 40 weight parts, the didecyl phthalate of 10 weight parts, the calcium carbonate of 60 weight parts, the fumed silica of 6 weight parts, the 2- (2-Hydroxy-3,5-dibutyl-tert-phenyl)-5-chlorobenzotriazole, 2 parts by weight of 2,6-di-tert-butyl-4-methylphenol, 5 parts by weight of bis(acetyl Pyruvate) dibutyltin is mixed evenly, and is sealed and packaged according to specifications to obtain component A;

[0034] (2) Mix 100 parts by weight of dimethoxysilyl-terminated polypropylene oxide, 5 parts by weight of polyoxypropylene glycol, and 60 parts by weight of silicon dioxide at 80°C and a vacuum of 0.095MPa , and maintained the above mixing conditions for 6 hours; after the temperature of the obtained mixture was dropped to below 50°C, add 6 p...

Embodiment 2

[0037] A kind of embodiment of the preparation method of two-component epoxy-modified silane-terminated polypropylene oxide sealant of the present invention comprises the following steps:

[0038] (1) 60 parts by weight of bisphenol A type epoxy resin, 15 parts by weight of 4,5-epoxy tetrahydrophthalate (2-ethyl) hexyl ester, 200 parts by weight of aluminum oxide, 8 parts by weight Parts of organic bentonite, 2 parts by weight of 2-(2-hydroxy-3,5-dibutyl-tert-phenyl)-5-chlorobenzotriazole, 1 part by weight of 2,6-di-tert-butyl-4- Dibutyltin dilaurate of methyl phenol and 4 parts by weight are mixed evenly, sealed and packaged according to specifications, and A component is obtained;

[0039](2) Mix 120 parts by weight of trimethoxysilane-terminated polypropylene oxide, 10 parts by weight of dibutyl phthalate, and 200 parts by weight of alumina at 100°C and 0.090MPa vacuum, and Maintain the above mixing conditions for 4 hours; after reducing the temperature of the obtained mix...

Embodiment 3

[0042] A kind of embodiment of the preparation method of two-component epoxy-modified silane-terminated polypropylene oxide sealant of the present invention comprises the following steps:

[0043] (1) the bisphenol F type epoxy resin of 80 weight parts, the didecyl phthalate of 20 weight parts, the calcium carbonate of 160 weight parts, the antimony oxide of 80 weight parts, the fumed silica of 2 weight parts , 1 weight part of 2-(2-hydroxy-3,5-dibutyl-tert-phenyl)-5-chlorobenzotriazole, 1.5 weight parts of 2,6-di-tert-butyl-4-methylphenol, 1 part by weight of bis(acetylacetonate) dibutyltin is mixed evenly, sealed and packaged according to specifications, and A component is obtained;

[0044] (2) 80 parts by weight of dimethoxysilyl-terminated polypropylene oxide, 20 parts by weight of chlorinated paraffin 52, and 70 parts by weight of carbon black are mixed uniformly at 120°C and 0.085MPa vacuum, and Maintain the above mixing conditions for 2 hours; after the temperature of...

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Abstract

The invention provides a double-component epoxy modified silane end-capped polypropylene oxide sealant. The double-component epoxy modified silane end-capped polypropylene oxide sealant is prepared from a component A and a component B. The double-component epoxy modified silane end-capped polypropylene oxide sealant provided by the invention has relatively good performance and a preparation technology is simple and environmentally friendly. By adopting epoxy modification, the tensile strength and the tensile shear strength of a sealant product are greatly improved, the adhesion performance isexcellent and advantages of epoxy and modified silane sealants are integrated; the sealant product provided by the invention sufficiently expresses performance advantages of the modified silane sealant and has the advantages of great bonding strength, good weather resistance, no need of a base coating agent, short surface-drying time, simple preparation technology and environment-friendly system (which adopts dealcholization curing and does not contain isocyanate); no harmful substances are generated from a production process to a utilization process of a product and the product meets environment-friendly requirements.

Description

technical field [0001] The invention relates to a two-component epoxy-modified silane-terminated polypropylene oxide sealant and a preparation method thereof. Background technique [0002] Silane-terminated polypropylene oxide sealant is a new type of environmentally friendly modified silane sealant, which inherits the advantages and strengths of silicone elastic sealant and polyurethane elastic sealant, showing excellent weather resistance, durability, high The ability to resist deformation and displacement, good adhesion, paintability, environmental friendliness, low staining and excellent workability can be used in many industrial fields. With the continuous application and development of new industrial materials and new processes, and the public's increasing requirements for environmental protection, energy conservation and emission reduction, sealant companies are paying more attention to the environmental protection of products, increasing technology research and devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J171/02C09J163/00C09J11/00C09J11/06C09J11/04C09J11/08C09K3/10
CPCC08K2003/265C08L2201/08C08L2205/025C08L2205/035C09J11/00C09J11/04C09J11/06C09J11/08C09J163/00C09J171/02C09K3/10C08L63/00C08L71/02C08L77/00C08K13/02C08K3/26C08K5/12C08K3/36C08K5/13
Inventor 李吉明刘海涛王书忠
Owner GUANGZHOU MECHANICAL ENG RES INST
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