Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Tackifier and preparation thereof as well as adhesion addition type liquid silicone rubber and preparation thereof

A technology of liquid silicone rubber and addition type, applied in the field of adhesive addition type liquid silicone rubber and its preparation, can solve the problems of slow curing speed at room temperature, limited application scope, etc., achieve short curing time, expand application scope, and yield high effect

Active Publication Date: 2015-12-09
广东皓明有机硅材料有限公司
View PDF7 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned carbon-carbon double bond-containing tackifiers are small molecules of unsaturated olefins, which often have a significant inhibitory effect on the platinum catalyst for addition-type liquid silicone rubber, resulting in very slow curing at room temperature, requiring heating to cure and use, which limits its use. Application range

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
  • Tackifier and preparation thereof as well as adhesion addition type liquid silicone rubber and preparation thereof
  • Tackifier and preparation thereof as well as adhesion addition type liquid silicone rubber and preparation thereof
  • Tackifier and preparation thereof as well as adhesion addition type liquid silicone rubber and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1, the present invention is used for the tackifier of addition-type liquid silicone rubber and its preparation

[0036] S1. Under the catalysis of 50 parts by mass of methyldimethoxyhydrogensilane and 70 parts by mass of dimethyldimethoxysilane under the catalysis of 12 parts by mass of hydrochloric acid solution with a mass fraction of 0.4%, hydrolysis reaction at 40°C 2h, condensation reaction at 50°C for 4h, then neutralization, drying to remove water, liquid separation, filtration, and vacuum distillation to obtain 63.5 parts by mass of hydroxy-terminated methylhydrogensilane;

[0037] The structural formula of the hydroxy-terminated methylhydrogen silane is as follows:

[0038]

[0039] In the formula, m=9, n=7.

[0040] S2. Combine 22 parts by mass of hydroxy-terminated methylhydrogensilane prepared in step S1 with 6 parts by mass of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, 6 parts by mass of γ-(methacryloyloxy ) Propyltrimethoxysilane was cataly...

Embodiment 2

[0044] Embodiment 2, the present invention is used for the tackifier of addition-type liquid silicone rubber and preparation thereof

[0045] S1. Under the catalysis of 60 parts by mass of methyldimethoxyhydrogensilane and 80 parts by mass of dimethyldimethoxysilane under the catalysis of 17 parts by mass of hydrochloric acid solution with a mass fraction of 0.3%, hydrolysis reaction at 50 °C 2h, condensation reaction at 55°C for 4h, then neutralization, drying to remove water, liquid separation, filtration, and vacuum distillation to obtain 76.9 parts by mass of hydroxy-terminated methylhydrogensilane;

[0046] The structural formula of the hydroxy-terminated methylhydrogen silane is as follows:

[0047]

[0048] In the formula, m=9, n=8.

[0049] S2. Combine 27 parts by mass of hydroxy-terminated methylhydrogensilane prepared in step S1 with 8 parts by mass of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, 8 parts by mass of γ-(methacryloyloxy ) Propyltrimethoxysilane wa...

Embodiment 3

[0053] Embodiment 3, the present invention is used for the tackifier of addition-type liquid silicone rubber and its preparation

[0054] S1. Under the catalysis of 70 parts by mass of methyldimethoxyhydrogensilane and 90 parts by mass of dimethyldimethoxysilane under the catalysis of 22 parts by mass of hydrochloric acid solution with a mass fraction of 0.2%, hydrolysis reaction at 55°C 2h, condensation reaction at 60°C for 4h, then neutralization, drying to remove water, liquid separation, filtration, and vacuum distillation to obtain 88.4 parts by mass of hydroxy-terminated methylhydrogensilane;

[0055] The structural formula of the hydroxy-terminated methylhydrogen silane is as follows:

[0056]

[0057] In the formula, m=11, n=9.

[0058] S2. Combine 33 parts by mass of hydroxy-terminated methylhydrogensilane prepared in step S1 with 11 parts by mass of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, 11 parts by mass of γ-(methacryloyloxy ) Propyltrimethoxysilane was ...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of electronic element encapsulating materials, and specifically relates to a tackifier for addition type liquid silicone rubber and a preparation method thereof as well as adhesion addition type liquid silicone rubber containing the tackifier and a preparation method thereof. In a general structural formula of the tackifier, which is shown in the specification, m+n is equal to 15 to 20. The adhesion addition type liquid silicone rubber containing the tackifier has the advantages of good flowing property, high curing speed at room temperature, excellent heat-conducting property after curing and good adhesion property to aluminum products, glass, stainless steel, PA, PVC and ABS materials.

Description

technical field [0001] The invention belongs to the technical field of potting materials for electronic components, in particular to a tackifier for addition-type liquid silicone rubber and a preparation method thereof, and an adhesive addition-type liquid silicone rubber containing the tackifier and its preparation method. Background technique [0002] Silicone rubber has many advantages such as good high and low temperature resistance, weather resistance, insulation and physiological inertia, and is widely used in various fields of national economy. In particular, addition-type liquid silicone rubber has low viscosity, good fluidity, no by-products during curing, and low shrinkage. It has been widely used in the field of potting and sealing of electronic components in recent years. However, addition-type liquid silicone rubber is a highly saturated non-polar rubber with low molecular surface energy and poor adhesion to electronic component housing materials, resulting in ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/06C08G77/12C08G77/14C08G77/20C08L83/07C08L83/05C08L83/06C08K9/06C08K3/22C08K3/36
Inventor 程宪涛张利利吴向荣靳利敏李清
Owner 广东皓明有机硅材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com