Flame-retardant ceramic silicone rubber and preparation method and application thereof

A ceramic silicone rubber, flame-retardant technology, applied in the direction of rubber insulators, organic insulators, etc., can solve the problems of poor fire resistance, limited manufacturing length, poor sealing of joints, etc., to improve crack resistance and quality loss rate The effect of small size and stable rubber properties

Inactive Publication Date: 2019-05-17
ZHEJIANG JOTEC NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although magnesium oxide mineral insulated fire-resistant cables have good fire-resistant properties, the production process is complicated, the production cost is high, the production length is limited, and the cables are hard and not easy to bend, the joints are poorly sealed, and the construction is difficult, so it is difficult to be widely used.
However, the mica tape is wrapped around the fire-resistant cable. After ablation, the mica tape becomes brittle and easy to fall off, resulting in poor fire resistance, and it is difficult to ensure the safety and smoothness of communication and power in case of fire.

Method used

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  • Flame-retardant ceramic silicone rubber and preparation method and application thereof
  • Flame-retardant ceramic silicone rubber and preparation method and application thereof
  • Flame-retardant ceramic silicone rubber and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In the kneader, first add 100 parts of raw rubber with 0.04% vinyl content and 0 parts of raw rubber with 3% vinyl content. Refining evenly, heat up to 150°C after agglomeration, heat treatment for 2 hours, vacuum degree is -0.04~-0.08MPa. Mix the heat-treated rubber with 1% peroxide on a double-roller rubber mixer, put it into a mold of 130mm×130mm×2mm, vulcanize it for 10 minutes under the condition of 125℃×10MPa, and make a test piece after demoulding. piece.

Embodiment 2

[0042] In the kneader, first add 95 parts of raw rubber with 0.04% vinyl content and 5 parts of raw rubber with 3% vinyl content. After turning over the roll to be wrapped, add 35 parts of reinforcing filler white carbon black and 5 parts of hydroxyl silicone oil several times. , mixed evenly, after agglomeration, the temperature was raised to 150°C, heat treated for 2 hours, and the vacuum degree was -0.04~-0.08MPa. Mix the heat-treated rubber with 1% peroxide on a double-roller rubber mixer, put it into a mold of 130mm×130mm×2mm, vulcanize it for 10 minutes under the condition of 125℃×10MPa, and make a test piece after demoulding. piece.

Embodiment 3

[0044]In the kneader, first add 90 parts of raw rubber with 0.04% vinyl content and 10 parts of raw rubber with 3% vinyl content. After turning over the roll to be wrapped, add 35 parts of reinforcing filler white carbon black and 5 parts of hydroxyl silicone oil several times. , mixed evenly, after agglomeration, the temperature was raised to 150°C, heat treated for 2 hours, and the vacuum degree was -0.04~-0.08MPa. Mix the heat-treated rubber with 1% peroxide on a double-roller rubber mixer, put it into a mold of 130mm×130mm×2mm, vulcanize it for 10 minutes under the condition of 125℃×10MPa, and make a test piece after demoulding. piece.

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Abstract

The invention discloses flame-retardant ceramic silicone rubber and a preparation method and application thereof. The flame-retardant ceramic silicone rubber is prepared from the raw materials in parts: 85-100 parts of raw rubber with 0.04% vinyl content, 0-15 parts of raw rubber with 3% vinyl content, 5-8 parts of hydroxy silicone oil, 40 parts of fumed silica, 15-25 parts of aluminum hydroxide/magnesium hydroxide, 0.5-0.8 part of a platinum flame retardant, 0-50 parts of mica powder, 0-10 parts of kaolin, 0-10 parts of wollastonite, 0-10 parts of low-melting-point glass powder, 0-2 parts ofzinc borate, 0-1 part of cerium hydroxide, 0-0.8 part of a silane coupling agent, and 2 parts of a vulcanizing agent. The flame-retardant ceramic silicone rubber has high thermal stability, and has the characteristics of excellent weather resistance, excellent electrical insulation properties, non-toxic and tasteless and environmental protection.

Description

technical field [0001] The invention relates to the field of wire and cable materials, in particular to a flame-retardant ceramic silicone rubber and its preparation method and application. Background technique [0002] With the acceleration of urbanization in my country and the rapid increase of urban population density, the importance of fire safety has become increasingly prominent. In the event of a fire, how to ensure the smooth flow of power and communication, gain precious time for escape and rescue, and minimize casualties and economic losses is a problem that needs to be solved urgently. [0003] The main chain of silicone rubber contains Si-O bonds. In the case of flame combustion, the main chain breakage and side group oxidation are the main reactions of silicone rubber in high-temperature aerobic atmosphere, in which the main chain breaks to form cyclic siloxane, Soften the silicone rubber; while the side group oxidizes to generate active free radicals, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08K3/36H01B3/28
Inventor 施建丰钱海波叶德芳
Owner ZHEJIANG JOTEC NEW MATERIAL TECH
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