A kind of annular adhesive and its synthesis method

A synthesis method and adhesive technology, applied in the direction of adhesives, etc., can solve the problems such as the reduction of the adhesion of the addition type silicone

Inactive Publication Date: 2017-05-24
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many substrates are highly polar substrates, resulting in reduced adhesion of addition silicones

Method used

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  • A kind of annular adhesive and its synthesis method
  • A kind of annular adhesive and its synthesis method
  • A kind of annular adhesive and its synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Keep the temperature of the oil bath at 70°C, add 50 grams of triallyl isocyanurate and 0.002 grams of platinum catalyst into a three-necked flask equipped with mechanical stirring, a condenser, and a constant pressure funnel, blow in nitrogen protection, and open the After stirring, 24 g of 1,1,3,5,5-pentamethyl-3-phenyltrisiloxane was slowly added dropwise into the three-necked flask, and the dropwise addition was completed within 0.5 hours, and the reaction was stirred for 3 hours. Then 24 g of trimethoxysilane was added dropwise into the three-necked flask, and the dropwise addition was completed within 0.5 hours. The stirring reaction was continued for 4 hours, the stirring reaction was stopped, and the low boilers were removed by distillation under reduced pressure. Cool down to room temperature, add 3 grams of activated carbon, stir and adsorb at room temperature for 12 hours, and obtain 84 grams of ring-shaped adhesive after filtration.

Embodiment 2

[0013] Keep the temperature of the oil bath at 80°C, add 50 grams of triallyl isocyanurate and 0.0025 grams of platinum catalyst into a three-necked flask equipped with mechanical stirring, a condenser, and a constant pressure funnel, blow in nitrogen protection, and open the After stirring, 27 g of 1,1,3,5,5-pentamethyl-3-phenyltrisiloxane was slowly added dropwise into the three-necked flask, and the dropwise addition was completed within 0.5 hours, and the reaction was stirred for 3 hours. Then add 30 g of trimethoxysilane dropwise into the three-necked flask, and the dropwise addition is completed within 0.5 hour, and the stirring reaction is continued for 4 hours, then the stirring reaction is stopped, and the low boilers are removed by distillation under reduced pressure. Cool down to room temperature, add 3 grams of activated carbon, stir and adsorb at room temperature for 12 hours, and obtain 90 grams of ring-shaped adhesive after filtration.

Embodiment 3

[0015] Keep the temperature of the oil bath at 75°C, add 55 grams of triallyl isocyanurate and 0.003 grams of platinum catalyst into a three-necked flask equipped with mechanical stirring, a condenser, and a constant pressure funnel, blow in nitrogen protection, and open the After stirring, slowly drop 28 grams of 1,1,3,5,5-pentamethyl-3-phenyltrisiloxane into the three-necked flask, and complete the dropwise addition within 0.5 hours, and stir for 3 hours to react. Then 32 g of trimethoxysilane was added dropwise into the three-necked flask, and the dropwise addition was completed within 0.5 hours, and the stirring reaction was continued for 4 hours, then the stirring reaction was stopped, and the low boilers were removed by distillation under reduced pressure. Cool down to room temperature, add 3 grams of activated carbon, stir and adsorb at room temperature for 12 hours, and obtain 102 grams of ring-shaped adhesive after filtration.

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Abstract

Provided is an annular adhesive synthesizing method. The method comprises the steps of: adding 40-60 parts of triallyl isocyanurate and 0.0015-0.0040 parts of platinum catalyst into a three-necked flask; at the 65-80 DEG C reaction temperature, slowly dropping 17-28 parts of 1,1,3,5,5-pentamethyl-3-phenyl trisiloxanes into the three-necked flask,and finishing the dropping within 0.5 hours; and stirring and reacting the mixture for 3-4 hours; adding 21-33 parts of trimethoxysilane into the three-necked flask and finishing the dropping within 0.5 hours; continuing the stirring and reaction for four hours; and then stopping the reaction; and removing low boiling materials by performing distillation at a reduced pressure. 6-9 parts of activated carbon are added into the substance, stirring and adsorbing are performed for 12 hours, and the annular adhesive is obtained after the material is filtered.

Description

technical field [0001] The invention relates to a ring adhesive and its synthesis method. Background technique [0002] In recent years, addition-type organic silica gel has developed rapidly, and has been applied in many fields due to its small curing shrinkage, no gas release, and environmental protection. With the broadening of application fields, the types of substrates for addition-type silica gel are also increasing. Many substrates are highly polar substrates, resulting in reduced adhesion of addition silicones. In order to solve this problem and ensure the adhesion of addition-type silica gel, it is necessary to synthesize some high-polarity adhesives for use in silica gel, which can enhance the adhesion between silica gel and the substrate. The application field of the addition-type silica gel is unlimited and widely used. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a ring-shaped adhesive and its ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/08C08G77/26
Inventor 陈维吴军王建斌陈田安
Owner YANTAI DARBOND TECH
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