A kind of epoxy resin modified by silane coupling agent and its preparation method and application

A technology of silane coupling agent and epoxy resin, which is applied in the direction of epoxy resin coatings, coatings, anti-corrosion coatings, etc., can solve the problems of limiting the application of epoxy protective coatings, poor chemical resistance, and poor aging resistance. Achieve the effects of small strength drop, good chemical resistance and high adhesion

Active Publication Date: 2016-08-10
JIANGSU SOBUTE NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing epoxy protective coatings have many shortcomings such as organic solvents, high paint film brittleness, poor chemical resistance, poor aging resistance, and difficult facade construction, which severely limits the application of epoxy protective coatings in the field of protection.

Method used

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  • A kind of epoxy resin modified by silane coupling agent and its preparation method and application
  • A kind of epoxy resin modified by silane coupling agent and its preparation method and application
  • A kind of epoxy resin modified by silane coupling agent and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Prepare the epoxy resin modified by the silane coupling agent of structural formula (I) by each substituting group of table 1 respectively,

[0029]

[0030] Table 1 Structure of epoxy resin modified by silane coupling agent

[0031] code name

R1

R2

R3

R4

R5

R6

R7

SiEP01

CH 3

CH 3

CH 3

CH 3

C 2 h 5

C 2 h 5

C 2 h 5

SiEP02

CH 3

CH 3

H

H

C 2 h 5

C 2 h 5

C 2 h 5

SiEP03

H

H

H

H

C 2 h 5

C 2 h 5

C 2 h 5

SiEP04

CH 3

CH 3

CH 3

CH 3

CH 3

CH 3

CH 3

SiEP05

H

H

CH 3

CH 3

C 2 h 5

CH 3

CH 3

SiEP06

CH 3

H

H

CH 3

CH 3

C 2 h 5

C 2 h 5

[0032] Its preparation method is: mix the epoxy resin monomer represented by the formula (II) with the molar ratio of 1:1 and the amino...

Embodiment 2

[0043] According to the formula of Table 3, the epoxy protective paints numbered as sample 1 to sample 6, comparative example 1 and comparative example 2 were prepared respectively, and the following steps were adopted: modifying epoxy resin, diluent, functional filler, thixotropic agent, Add the dispersant, defoamer and pigment into the reaction kettle in order at room temperature, raise the temperature to 40-60°C and stir for 0.5-1.5 hours to prepare component A of epoxy protective coating; put the curing agent and accelerator at room temperature Put them into the reaction kettle in sequence, stir at room temperature for 0.5-1.5 hours, and prepare the B component of epoxy protective coating. Before use, mix components A and B according to the formula ratio and stir well to obtain the epoxy protective coating described herein.

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PUM

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Abstract

The invention provides a silane coupling agent-modified epoxy resin, the structural formula of which is shown in formula (I). The present invention also provides an epoxy protective paint comprising the above-mentioned epoxy resin modified by the silane coupling agent. The epoxy resin modified by the silane coupling agent provided by the present invention has a simple preparation process, and its reaction with the amine curing agent not only stabilizes the molecular chain structure of the cured product, but also has high interfacial compatibility with the pigment, and at the same time The strength of the structure decreases very little; the epoxy protective paint prepared by using the epoxy resin modified by the silane coupling agent has good film gloss, good toughness, high adhesion to the substrate, and chemical resistance. Good, environment-friendly, moderate cost and other advantages.

Description

technical field [0001] The invention belongs to the field of protective coatings, in particular to a silane coupling agent-modified epoxy resin and a preparation method thereof, and also to a silane coupling agent-modified epoxy resin for use on surfaces such as metals and concrete. Protective epoxy protective coatings and methods for their preparation. Background technique [0002] Epoxy protective coating is a commonly used coating in building materials. Because epoxy resin has good bonding performance on the surface of various materials, has very comprehensive chemical resistance, and has good protective and chemical properties, it has become a protective field. The most widely used polymer material, the coating with epoxy resin as the main material is widely used in various fields, especially to protect steel structures such as bridges, mechanical equipment, tanks, or metal products such as steel plates and steel pipes from external corrosion A function of environmental...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/02C09D7/12C09D4/06C09D5/08C08G59/50
Inventor 乔敏俞寅辉高南箫冉千平刘加平
Owner JIANGSU SOBUTE NEW MATERIALS
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