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Preparation method for silicon-titanium polymer capable of being used as additive

A polymer, silicon-titanium technology, used in adhesive additives, polymer adhesive additives, aldehyde/ketone condensation polymer adhesives, etc., can solve problems such as corrosion of metal surfaces, improve heat resistance and adhesion. The effect of connection performance

Inactive Publication Date: 2015-07-15
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, since the cohydrolysis of alkoxysilane and titanate using the sol-gol method requires the use of protonic acid as a catalyst, the metal surface will be corroded when the metal surface is bonded. Therefore, it is necessary to explore a more suitable metal material. silicon titanium polymer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The first step, the preparation of hydroxyl-terminated silicon-titanium oligomers, reacts titanium trichloride with hydroxyl-terminated polydimethylsiloxane: mix hydroxyl-terminated polydimethylsiloxane with a molecular weight of 400 and N,N-dimethicone The methylaniline receiver was dissolved in toluene at a molar ratio of 1:0.6, and the above solution was placed in a three-necked flask with magnetic stirring; the molar ratio of titanium trichloride and hydroxyl-terminated polydimethylsiloxane was 1:2, Dissolve titanium trichloride in toluene, and add dropwise through a constant pressure dropping funnel; the reaction temperature is 0°C, continue to react for 5 hours after the dropwise addition, and then stop the reaction, filter the white precipitate powder generated by the reaction with filter paper; place the obtained filtrate in Wash with distilled water in the separating funnel until the chlorine content is zero; add anhydrous Na to the organic phase after washing ...

Embodiment 2

[0024] The first step, the preparation of hydroxyl-terminated silicon-titanium oligomers, reacts titanium trichloride with hydroxyl-terminated polydimethylsiloxane: mix hydroxyl-terminated polydimethylsiloxane with a molecular weight of 10,000 and N,N-dimethicone The ethylaniline receiver was dissolved in benzene at a molar ratio of 1:1, and the above prepared solution was placed in a three-necked flask with magnetic stirring; the molar ratio of titanium trichloride and hydroxyl-terminated polydimethylsiloxane was 1:3, Dissolve titanium trichloride in benzene, and add dropwise through a constant pressure dropping funnel; the reaction temperature is 25°C, continue to react for 3 hours after the dropwise addition, and then stop the reaction, filter the white precipitate powder generated by the reaction with filter paper; place the obtained filtrate in Wash with distilled water in the separating funnel until the chlorine content is zero; add anhydrous Na to the organic phase after...

Embodiment 3

[0029] The first step, the preparation of hydroxyl-terminated silicon-titanium oligomers, reacts titanium tetrachloride with hydroxyl-terminated polymethylvinylsiloxane: the molecular weight is 18000 hydroxyl-terminated polymethylvinylsiloxane and N-ethyl The aniline receiver was dissolved in tetrahydrofuran at a molar ratio of 1:2, and the above solution was placed in a three-necked flask with magnetic stirring; the molar ratio of titanium tetrachloride and hydroxyl-terminated polymethylvinylsiloxane was 1:5, Dissolve titanium chloride in tetrahydrofuran, and add dropwise through a constant pressure dropping funnel; the reaction temperature is 25°C, continue the reaction for 3 hours after the dropwise addition, and then stop the reaction, filter the white precipitated powder generated by the reaction with filter paper; place the obtained filtrate in a separate Wash with distilled water in a liquid funnel until the chlorine content is zero; add anhydrous Na to the organic phase...

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Abstract

The invention provides a preparation method for a silicon-titanium polymer capable of being used as an additive. According to the method, hydroxyl terminated polysiloxane and titanium chloride are used as raw materials, and two-step condensation is carried out so as to prepare the silicon-titanium polymer. The method has the following advantages: the raw materials are cheap and easily available; and the prepared polymer has no corrosivity on metal. The silicon-titanium polymer can be applied in the field of bonding materials; and when used as an additive for an adhesive, the silicon-titanium polymer has good compatibility and can improve heat resistance and bonding performance of the adhesive.

Description

technical field [0001] The invention relates to a preparation method of a silicon-titanium polymer, which can be used as an additive to improve the heat resistance and bonding performance of an adhesive. The preparation method is a two-step condensation method, which consists of hydroxyl-terminated polysiloxane and chlorinated It is produced by condensation polymerization of titanium. Background technique [0002] Organic-inorganic hybrid materials are a kind of "composite materials" that cross the boundary between organic materials and inorganic materials. This hybrid material can have the advantages of both organic and inorganic materials. The research on organic-inorganic hybrid materials with structures such as Si-O-M has never stopped, covering the reactions of various metal elements and non-metal elements. As early as the 1950s, Andrianov et al. conducted research on metal-containing organosilicon compounds and polymers, involving aluminum, titanium, boron, tin, germa...

Claims

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Application Information

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IPC IPC(8): C08G77/398C08G77/16C08G77/20C08G79/00C09J11/08C09J161/06
Inventor 张孝阿刘丹丹李彦齐士成江盛玲吕亚非
Owner BEIJING UNIV OF CHEM TECH
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