Silicon rubber composition and its preparation process and use

A technology of silicone rubber composition and silicone raw rubber, which is applied in the field of silicone rubber composition and its preparation, can solve problems such as resistance to hydrolysis and unsatisfactory bonding, and achieve the effect of improving bonding strength

Inactive Publication Date: 2005-01-19
INST OF CHEM CHINESE ACAD OF SCI
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the Si-O-M (M represents metal atom) bond is not resistant to hydrolysis, known silane co

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
  • Silicon rubber composition and its preparation process and use

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1

[0019] Prepare silicone rubber in the following proportions:

[0020] 107 Raw Silicone Rubber (Beijing Chemical Plant) 100 parts by weight

[0021] Ethyl orthosilicate (Beijing Xinzhong Chemical Plant) 3 parts by weight

[0022] Dibutyl tin dilaurate (Beijing Chemical Plant) 0.4 parts by weight

[0023] No. 2 white carbon black (Shenyang Chemical Plant) 10 parts by weight

[0024] Titanium dioxide (Beijing Chemical Plant) 40 parts by weight

[0025] γ-(3-acetylacetonyl)propyltrimethoxysilane (homemade) 1 part by weight

[0026] Coated on the surface of 304# stainless steel with a concentration of 1% γ-(3-acetylacetonyl)propyltrimethoxysilane ethanol solution and dried. After being placed at room temperature for 24 hours, the stainless steel test piece was bonded with the silicone rubber. Leave it at room temperature for 7 days to allow the silicone rubber to cure completely. The results of the shear strength test are as follows:

[0027] Shear strength failure m...

Example Embodiment

[0040] Example 2

[0041] Prepare silicone rubber according to the following formula:

[0042] 107 Raw Silicone Rubber (Beijing Chemical Plant) 100 parts by weight

[0043] Ethyl orthosilicate (Beijing Xinzhong Chemical Plant) 3 parts by weight

[0044] Dibutyl tin dilaurate (Beijing Chemical Plant) 0.4 parts by weight

[0045] No. 2 white carbon black (Shenyang Chemical Plant) 10 parts by weight

[0046] Titanium dioxide (Beijing Chemical Plant) 40 parts by weight

[0047] γ-(3-acetylacetonyl)propyltrimethoxysilane (homemade) 1-5 parts by weight

[0048] Bond the brass test piece with the above-mentioned silicone rubber. Place it at room temperature for 24h, and treat it at 100°C for 6h. The results of the shear strength test are as follows:

[0049] γ-(3-acetylacetonyl)propyl tri

[0050] 0 1 3 5

[0051] Methoxysilane content (weight minutes)

[0052] Shear strength (MPa) <0.5 2.46 2.79 2.83

[0053] Failure form Adhesive failure Cohesive failure Co...

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

A silicon- rubber composition comprises crude silica gel, cross linking agent, catalyst, filling material and gamma-(3-acetylacetone) propyl trialkoxy silicane, these components are blended at room temperature (25-40 deg. C.). The composition can be used for the adhesion with metals.

Description

technical field [0001] The invention relates to a silicone rubber composition and its preparation method and application. The composition is composed of silica gel, crosslinking agent, catalyst, filler and gamma-(3-acetylacetonyl)propyltrialkoxysilane. The composition is prepared by blending the above components at room temperature (25-40° C.). The composition can be used for bonding with metals. Background technique [0002] Silicone rubber has high and low temperature resistance, weather aging resistance and excellent electrical properties, and is an important bonding and sealing material. Silicone rubber is widely used in construction, transportation and electronic devices in modern industry. However, due to the low surface energy of silicone rubber, its bonding strength with metal surfaces, especially difficult-to-bond metals such as stainless steel and brass, is also very low, which affects the service life of many bonded and sealed parts. Therefore, it is of great ...

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): C08K5/5415C08L83/00
Inventor 姚远余云照
Owner INST OF CHEM CHINESE ACAD OF SCI
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