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Method for producing hybrid material on the basis of Si/Ti composite sol modified epoxy resin

A technology of epoxy resin preparation and composite sol, applied in epoxy resin coatings, anti-corrosion coatings, coatings and other directions, can solve the problems of epoxy resin brittleness and weather resistance, and achieve high strength and improved aging resistance. , the effect of high hardness

Inactive Publication Date: 2019-03-29
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have little involvement in improving the brittleness and weather resistance of epoxy resins.

Method used

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  • Method for producing hybrid material on the basis of Si/Ti composite sol modified epoxy resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In the ratio of tetraethyl orthosilicate and tetrabutyl titanate: deionized water: absolute ethanol: acetic acid = 1: 3.5: 25: 0.07, take tetraethyl orthosilicate and 2 / 3 of absolute ethanol, And the deionized water and acetic acid required for the experimental reaction were added to a 250ml three-necked round-bottomed flask and stirred at room temperature for 30 minutes. Dilute tetrabutyl titanate with 1 / 3 of absolute ethanol, add a small amount of acetylacetone dropwise, and then add acid formula The burette is evenly added dropwise to the stirring three-necked round bottom flask, wherein the molar ratio of silicon:titanium in tetraethyl orthosilicate and tetrabutyl titanate is 3:1, and finally the silane coupling agent KH- 560, the amount of coupling agent is 10% of the Si and Ti in tetraethyl orthosilicate and tetrabutyl titanate, and the stirring is continued for 3 hours to obtain a modified silicon / titanium composite sol.

[0024] Take by weighing 15.5g of epoxy r...

Embodiment 2

[0026] In the ratio of tetraethyl orthosilicate and tetrabutyl titanate: deionized water: absolute ethanol: acetic acid = 1: 3.5: 25: 0.07, take tetraethyl orthosilicate and 2 / 3 of absolute ethanol, And the deionized water and acetic acid required for the experimental reaction were added to a 250ml three-necked round-bottomed flask and stirred at room temperature for 30 minutes. Dilute tetrabutyl titanate with 1 / 3 of absolute ethanol, add a small amount of acetylacetone dropwise, and then add acid formula The burette is evenly added dropwise to the stirring three-necked round bottom flask, wherein the molar ratio of silicon:titanium in tetraethyl orthosilicate and tetrabutyl titanate is 3:1, and finally the silane coupling agent KH- 560, the amount of coupling agent is 10% of the Si and Ti in tetraethyl orthosilicate and tetrabutyl titanate, and the stirring is continued for 3 hours to obtain a modified silicon / titanium composite sol.

[0027] Take by weighing 7.5g of epoxy re...

Embodiment 3

[0029] In the ratio of tetraethyl orthosilicate and tetrabutyl titanate: deionized water: absolute ethanol: acetic acid = 1: 3.5: 25: 0.07, take tetraethyl orthosilicate and 2 / 3 of absolute ethanol, And the deionized water and acetic acid required for the experimental reaction were added to a 250ml three-necked round-bottomed flask and stirred at room temperature for 30 minutes. Dilute tetrabutyl titanate with 1 / 3 of absolute ethanol, add a small amount of acetylacetone dropwise, and then add acid formula The burette is evenly added dropwise to the stirring three-necked round bottom flask, wherein the molar ratio of silicon:titanium in tetraethyl orthosilicate and tetrabutyl titanate is 2:1, and finally the silane coupling agent KH- 560, the amount of coupling agent is 10% of the Si and Ti in tetraethyl orthosilicate and tetrabutyl titanate, and the stirring is continued for 3 hours to obtain a modified silicon / titanium composite sol.

[0030] Weigh 5.5g of epoxy resin, 5g of ...

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Abstract

A method for producing a hybrid material on the basis of Si / Ti composite sol modified epoxy resin includes: 1) performing co-hydrolysis on a silane coupling agent with a functional group, tetraethoxysilane and tetrabutyl titanate to prepare Si / Ti composite sol; 2) performing a reaction on the Si / Ti composite sol and epoxy resin with a curing agent to prepare the epoxy / Si / Ti organic-inorganic hybrid material. Herein, the sol and the epoxy group are bonded through chemical bonds, thus forming the epoxy / Si / Ti organic-inorganic hybrid material having great performance. The hybrid material, as a composite coating, has the advantages of both organic resin and inorganic materials, so that combination between the organic high-polymer and the inorganic phase on nano-scale is achieved and strong interfacial interaction between the two phases is achieved, which manifest as by adding a less amount of the composite sol, the toughness and anti-aging effect of epoxy resin and binding strength with metal are all improved greatly.

Description

technical field [0001] The invention relates to the technical field of organic epoxy resin and silicon / titanium sol in the technical field of chemical engineering, and relates to a method for preparing hybrid materials based on silicon / titanium composite sol modified epoxy resin. Background technique [0002] Epoxy resin has excellent characteristics such as good adhesion and good cohesion, and has a wide range of applications in the coating field. However, the traditional epoxy resin has poor toughness, poor weather resistance and poor corrosion resistance. People improve certain properties of epoxy resin by physical mixing of inorganic particles and epoxy resin. Although the method is simple, the stability is not good, and the overall performance improvement is limited. [0003] For example, the patent number CN201810328240.2 proposes a preparation method of a modified epoxy resin material, including adding modified silicon dioxide to a bifunctional epoxy system, adding n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K9/06C08K3/22C08K3/36C09D163/00C09D5/08
CPCC08K3/22C08K3/36C08K9/06C08K2003/2241C09D5/08C09D163/00C08L63/00
Inventor 王金伟王玉烨
Owner UNIV OF SCI & TECH BEIJING
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