Bonding promoter for addition type silicone rubber as well as preparation method and application of bonding promoter

A technology of adhesion promoter and silicone rubber, which is applied in the direction of adhesives, adhesive additives, polymer adhesive additives, etc., can solve the problems of poor adhesive performance of addition-type silicone rubber, and achieve improved transparency and compatibility , Improve the effect of bonding performance

Active Publication Date: 2020-08-04
TONSAN ADHESIVES INC
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide an adhesion promoter for addition-type silicone rubber, its prepa

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Bonding promoter for addition type silicone rubber as well as preparation method and application of bonding promoter

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] Due to the poor bonding effect of the existing adhesion promoters for addition-type rubber, in order to improve the adhesion performance, in a typical implementation of the application, a preparation of an adhesion promoter for addition-type silicone rubber is provided. The preparation method comprises: reacting tetramethylcyclotetrasiloxane with the first mixture to obtain the first reaction product; mixing the first reaction product with 1-ethynyl-1-cyclohexanol to obtain the second Mixture; the second mixture is reacted with allyl glycidyl ether to obtain an adhesion promoter for addition-type silicone rubber; wherein, the first mixture includes bis(trimethoxysilylmethyl)ethylene and a platinum content of 1500- 4500ppm platinum complex.

[0019] In the above preparation method, by using bis(trimethoxysilylmethyl)ethylene as a raw material, compared with acrylate, etc., the compatibility of the prepared adhesion promoter and the system can be improved, and the transpa...

Embodiment 1

[0038] (1) Synthesis of adhesion promoter

[0039] Measure 100 g (0.4.mol) of bis(trimethoxysilylmethyl)ethylene into a three-necked flask, add 0.3 g of divinyltetramethyldisiloxane complex of chloroplatinic acid with a platinum content of 2000 ppm, Mix well under the protection of nitrogen, and heat at 60°C for 30 minutes for later use. Measure 140g (0.4mol) of tetramethylcyclotetrasiloxane into a four-necked flask with a thermometer and a condensing reflux tube, stir and heat to 60°C under the protection of nitrogen, and start dropwise preheating with a constant pressure dropping funnel A good mixture of bis(trimethoxysilylmethyl)ethylene and isopropanol solution of chloroplatinic acid was added dropwise at 60°C for 1 hour. After the dropwise addition was completed, the temperature was raised to 80° C. to continue the reaction for 2 h and then lowered to room temperature. Add 0.05g of 1-ethynyl-1-cyclohexanol, stir evenly, and start to add 38.5g (0.3mol) allyl glycidyl eth...

Embodiment 2

[0043] (1) Synthesis of adhesion promoter

[0044] Measure 248.5g (1mol) of bis(trimethoxysilylmethyl)ethylene into a three-necked flask, add 0.5g of divinyltetramethyldisiloxane complex of chloroplatinic acid with a platinum content of 1500ppm, nitrogen Mix evenly under protection, heat at 55°C for 30 minutes and set aside. Measure 344.g (1mol) of tetramethylcyclotetrasiloxane into a four-necked flask equipped with a thermometer and a condensing reflux tube, stir and heat to 55°C under the protection of nitrogen, and start dropping the pre- The heated mixture of bis(trimethoxysilylmethyl)ethylene and isopropanol solution of chloroplatinic acid was added dropwise at 55°C for 1.5 hours. After the dropwise addition, the temperature was raised to 75° C. to continue the reaction for 4 h and then lowered to room temperature. Add 0.5g of 1-ethynyl-1-cyclohexanol, stir evenly, and start to add 114g (1mol) allyl glycidyl ether dropwise with a constant pressure dropping funnel, and t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a bonding promoter for addition type silicone rubber as well as a preparation method and an application of the bonding promoter. The preparation method comprises the following steps: reacting tetramethylcyclotetrasiloxane with a first mixture to obtain a first reaction product; mixing the first reaction product with 1-ethynyl-1-cyclohexanol to obtain a second mixture; and reacting the second mixture with allyl glycidyl ether to obtain the bonding promoter for addition type silicone rubber, wherein the first mixture comprises a complex of bis(trimethoxysilyl methyl)ethylene and platinum, and the platinum content of the complex is 1500-4500 ppm. By adopting bis(trimethoxysilyl methyl)ethylene as a raw material, the compatibility between the prepared bonding promoter and a system can be improved, the transparency can be improved, and meanwhile, due to introduction of alkoxy, the adhesion performance to a base material can be improved. The problem that in the prior art, addition type silicone rubber is turbid due to an adhesion promoter is solved, and the adhesive is suitable for the field with high light transmittance requirements.

Description

technical field [0001] The invention relates to the technical field of silicone material bonding, in particular to an adhesion promoter for addition-type silicone rubber, its preparation method and application. Background technique [0002] In recent years, addition-type silicone rubber has developed rapidly in the field of silicone rubber due to its excellent performance and high added value, and has been widely used in electronic appliances, medical care, automobiles, machinery, construction and other industries. Compared with condensation-type RTV silicone rubber, addition-type silicone rubber has no small molecular by-products, extremely low shrinkage rate, and fast deep-layer curing during the curing process. The cured silicone rubber has excellent heat resistance, cold resistance, moisture resistance, insulation and Radiation resistance. However, most of the addition-type silicone rubber has non-polar organic groups on the surface after curing, and its bonding perform...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08G77/20C08G77/06C09J11/08C09J183/07C09J183/05
CPCC08G77/06C08G77/20C08L2201/10C08L2205/025C08L2205/035C08L2205/08C09J11/08C09J183/04C08L83/04
Inventor 高秋爽王瑶王吉
Owner TONSAN ADHESIVES INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap