Fire-resistant ceramic silicone rubber, preparation method of fire-resistant ceramic silicone rubber and application in wires and cables

A technology of silicon rubber and ceramicization, which is applied in the direction of rubber insulators and organic insulators, can solve the problems of unstable fire resistance, strong water absorption of mica, and easy cracks, etc., and achieve excellent electrical insulation performance, stable ceramic body structure, and good The effect of processability

Inactive Publication Date: 2013-01-02
WUXI JIANGNAN CABLE
View PDF6 Cites 61 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the fire-resistant cable wrapped with mica tape, when the cable is burned, the mica sinters and hardens to continue to play the role of insulation, so as to achieve the effect of fire resistance. However, whether it is synthetic mica tape, phlogopite tape, muscovite tape or other mica tape The main disadvantages are as follows: (1) Mica has strong water absorption, and it is easy to fail after absorbing water; (2) The processing method of mica tape is to paste mica powder with adhesive, so it is relatively hard. Among them, the mica powder is very easy to peel off. As long as there is peeling off, the insulating function will be lost, which cannot meet the requirements of use; at the same time, it is not easy to wrap flat, evenly, tightly, and easy to wrinkl

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0042] Example 1

[0043] Ceramic refractory silicone rubber, which includes the following components and mass parts:

[0044] Methyl vinyl silicone rubber with a vinyl content of 0.07%~0.15% (mol) 100 servings Gas phase ultrafine white carbon black 60 servings Superfine alumina 30 servings Low molecular weight hydroxy silicone oil 2.4 copies Fe 2 O 3 4 parts Vinyltrimethoxysilane 1 serving Dicumyl peroxide 1.2 copies

[0045] The preparation method of ceramicized refractory silicone rubber is as follows:

[0046] (1) Add vinyltrimethoxysilane to the gas phase ultrafine white carbon black, ultrafine alumina, and Fe2O3, respectively, and stir in the kneader for 10 minutes, and then set aside;

[0047] (2) Mix the raw methyl vinyl silicone rubber rubber with a vinyl content of 0.07%~0.15% (mol) with a roll, and the roller speed ratio of the double-roll mill is (1.2~1.4):1. The temperature is below 40℃, the roller distance is 1mm, and the mixing time is 5min.

[0048] (3) Add ...

Example Embodiment

[0059] Example 2

[0060] Ceramic refractory silicone rubber, which includes the following components and mass parts:

[0061] Methyl vinyl silicone rubber with vinyl content of 0.05%~0.1% (mol) 100 servings Precipitation white carbon black 60 servings Electrical filler alumina 30 servings MnO 2 3 copies Vinyl triethoxy silane 0.25 serving Benzoyl peroxide 0.5 serving

[0062] The preparation method of ceramicized refractory silicone rubber is as follows:

[0063] (1) Mix the methyl vinyl silicone rubber raw rubber with vinyl content of 0.05%~0.1% (mol) with rolls, the roller speed ratio of the double-roll mill is (1.2~1.4):1, and mix The temperature is below 40℃, the roll distance is 1mm, and the mixing time is 4min.

[0064] (2) Add precipitation white carbon black and electrical filler alumina to the raw rubber covered in step (1). The roller speed ratio of the double-roll mill is (1.2~1.4):1, and the mixing temperature is 40 Below ℃, the roll distance is 1mm, and the ...

Example Embodiment

[0072] Example 3

[0073] Ceramic refractory silicone rubber, which includes the following components and mass parts:

[0074] Methyl vinyl silicone rubber with vinyl content of 0.15%~0.3% (mol) 100 servings Fumed white carbon black 80 servings Alumina for electronic ceramics 40 servings Tetramethylethylenedioxydimethylsilane 8 servings Cr2O3 5 servings γ-Mercaptopropyl Trimethoxysilane 1.5 servings Di-tert-butyl peroxide 2 servings

[0075] The preparation method of ceramicized refractory silicone rubber is as follows:

[0076] (1) Add γ-mercaptopropyltrimethoxysilane to fumed white carbon black, alumina for electronic ceramics, and Cr2O3, respectively, and stir in a kneader for 10 minutes, and then set aside;

[0077] (2) Mix the methyl vinyl silicone rubber raw rubber with vinyl content of 0.15% to 0.3% (mol) with a roll, and the roller speed ratio of the two-roll mill is (1.2 to 1.4):1. The temperature is below 40℃, the roller distance is 1mm, and the mixing time is 5...

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 discloses a fire-resistant ceramic silicone rubber, a preparation method of the fire-resistant ceramic silicone rubber and application of the fire-resistant ceramic silicone rubber and in wires and cables. The rubber comprises 100 parts of methyl vinyl silicone rubber, 30-80 parts of carbon-white, 9- 40 parts of alumina, 1.5-8 parts of structure controlling agent, 3-5 parts of sintering additive, 0.25-1.5 parts of surface treating agent and 0.5-2 parts of crosslinking agent. The preparation method is as follows: covering rubber on and milling uniformly the methyl vinyl silicone rubber, feeding the carbon-white, the alumina, the surface treating agent, the structure controlling agent, the sintering additive and the crosslinking agent in turn, remlling the stand sizing material to recover plasticity, so as to obtain the fire-resistant ceramic silicone rubber provided by the invention. The fire-resistant ceramic silicone rubber provided by the invention has the characteristics of compact ceramic body, stable structure, stable fire-resistance property and good insulation property.

Description

technical field [0001] The invention relates to a rubber material, specifically a ceramic refractory silicone rubber, its preparation method and its application in electric wires and cables. Background technique [0002] With the frequent occurrence of fire accidents, people's awareness of the fire hazards of wires and cables continues to deepen, and the relevant departments have higher and higher requirements for the performance of wires and cables such as fire resistance and flame retardancy. Because the cable fire has the characteristics of rapid spread, difficulty in fighting, secondary hazards, and long recovery time, it will bring huge losses to the national economy and the lives and properties of the people. Therefore, people have put forward more stringent operating conditions for the fire protection characteristics, safety and reliability of wires and cables. Such as fireproof, explosion-proof, strong overload capacity, long service life, under fire conditions, fir...

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): C08L83/07C08K13/06C08K9/06C08K3/36C08K3/22C08K5/14B29B7/00H01B3/28
Inventor 陈晓军夏亚芳刘军吴丽芳
Owner WUXI JIANGNAN CABLE
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