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Flame-retardant and fire-resistant ceramic silicone rubber and preparation method thereof

A ceramic silicone rubber, flame retardant and fire-resistant technology, applied in the field of rubber materials, can solve the problems of difficult liquid phase ceramicization, unsatisfactory ceramicization effect, increased shrinkage, etc., achieve low production cost, avoid the decline of insulation performance, The effect of promoting fire resistance

Inactive Publication Date: 2016-08-17
SHANDONG ZHAOGUI POLYMER MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, a large amount of fillers are used in the above-mentioned patent documents. During the combustion process, since the melting point of the filler itself is higher than the combustion temperature, it is difficult to form a liquid phase and then ceramize
Even if zinc borate, glass powder and other low-melting fillers are used, it is difficult to have a sufficient bonding effect on the filler particles, and it may cause increased shrinkage, and the ceramicization effect is not ideal.

Method used

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  • Flame-retardant and fire-resistant ceramic silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A method for preparing flame-retardant refractory vitrified silicone rubber, comprising the following steps:

[0050] (1) Roll 100 parts of methyl vinyl silicone rubber (vinyl content is 0.16mol%, average molecular weight is 650,000), add 30 parts of Toyo K-200 fumed silica and 5 parts of hydroxy silicone oil (hydroxy content is 8wt%), mixing evenly;

[0051] (2) Add 2 parts of silane coupling agent A171 and 75 parts of porcelain powder to the mixed rubber obtained in step (1), and knead evenly;

[0052] (3) Add 20 parts of aluminum hydroxide flame retardant, 5 parts of zinc oxide, 0.001 part of chloroplatinic acid and 4 parts of heat-resistant agent iron oxide in the mixed rubber obtained in step (2), and mix evenly;

[0053] (4) Add 9 parts of phenolic resin, 1 part of polyester fiber and 0.5 part of C glue (polyvinyl silicone oil with a vinyl content of 8mol%) to the mixed rubber obtained in step (3), and mix evenly;

[0054] (5) heat-treat the mixed rubber obtaine...

Embodiment 2

[0059] A method for preparing flame-retardant refractory vitrified silicone rubber, comprising the following steps:

[0060] (1) Roll 100 parts of methyl vinyl silicone rubber (vinyl content is 0.22mol%, average molecular weight is 650,000), add 40 parts of Cabot TS-530 white carbon black and 0.5 parts of hydroxy silicone oil (hydroxyl content is 8wt%), mixing evenly;

[0061] (2) Add 2.5 parts of silane coupling agent KH570 and 85 parts of porcelain powder to the mixed rubber obtained in step (1), and mix evenly;

[0062] (3) Add 15 parts of flame retardants, 0.0006 parts of chloroplatinic acid, 6 parts of zinc oxide and 3 parts of cerium oxide heat-resistant agents to the mixed rubber obtained in step (2), and mix evenly;

[0063] (4) Add 12 parts of polysulfone resin and 1 part of C glue (polyvinyl silicone oil with a vinyl content of 8mol%) to the mixed rubber obtained in step (3), and mix evenly;

[0064] (5) heat-treat the mixed rubber obtained in step (4) in an oven a...

Embodiment 3

[0070] A method for preparing flame-retardant refractory vitrified silicone rubber, comprising the following steps:

[0071] (1) Roll 100 parts of methyl vinyl silicone rubber (the vinyl content is 1.6mol%, and the average molecular weight is 800,000), add 35 parts of Degussa A200 type white carbon black and 3.5 parts of hydroxyl silicone oil (the hydroxyl content is 6wt%), uniform mixing;

[0072] (2) Add 3 parts of silane coupling agent KH550 and 75 parts of porcelain powder to the mixed rubber obtained in step (1), and knead evenly;

[0073] (3) Add 15 parts of flame retardant, 0.05 part of tetramethyldivinyldisiloxane-platinum complex, 8 parts of zinc oxide and 5 parts of heat-resistant agent in the rubber compound obtained in step (2) , mixed evenly;

[0074] (4) Add 10 parts of polyurethane resin, 2 parts of aramid fibers and 1 part of C glue (polyvinyl silicone oil with a vinyl content of 8mol%) to the mixed rubber obtained in step (3), and mix evenly;

[0075] (5) h...

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Abstract

The invention relates to a flame-retardant and fire-resistant ceramic silicone rubber and a preparation method thereof. The silicone rubber comprises, by weight, 100 parts of methyl vinyl silicone rubber, 1-80 parts of silica, 0-10 parts of a concentrative crosslinking agent, 0-20 parts of a structurized control agent, 0.1-10 parts of a silane coupling agent, 0-10 parts of organic fibers, 0-50 parts of high temperature resisting resin, 1-160 parts of ceramic powder, 1-80 parts of a flame retardant, 0-15 parts of an assistant, 0-30 parts of a heat proofing agent, 0.000001-0.1 parts of a platinum compound (by platinum) and 0.1-5 parts of a vulcanizing agent. The invention also provides a preparation method of the silicone rubber. The flame-retardant and fire-resistant ceramic silicone rubber has excellent mechanical performances and good heatproof performance at normal temperature, and solves the disadvantages of ceramic cracks and poor electric insulation performance of traditional ceramic silicone rubbers, induced by addition of a large amount of glass powder.

Description

technical field [0001] The invention relates to a flame-retardant and refractory ceramic silicone rubber and a preparation method thereof, belonging to the technical field of rubber materials. Background technique [0002] Silicone rubber (SR) has excellent electrical properties, chemical stability, moisture and water resistance, high and low temperature resistance, and can be used for a long time at -50 to 200 ° C, so it has received extensive attention and application. Silicone rubber decomposes to produce a large amount of SiO 2 , which provides a material basis for the porcelain of composite materials, thereby greatly reducing the amount of fillers added; when the silicone rubber burns, the heat release rate is small, the total heat release is small, and there is no melting drop, so its combustion performance is significantly better than Universal resin material. [0003] Flame-retardant and refractory ceramic silicone rubber is a new type of refractory composite mater...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/06C08L61/06C08L75/04C08L81/06C08K13/02C08K3/36C08K3/22C08K3/34C08K3/26C08K3/32
CPCC08L83/04C08K2201/014C08L2201/02C08L2201/22C08L2205/035C08L2205/16C08L83/06C08L61/06C08K13/02C08K3/36C08K2003/2227C08K2003/2296C08K2003/2272C08K3/346C08L81/06C08K3/34C08K2003/265C08K2003/323C08L75/04
Inventor 王聪鹏邱法仁张忠民
Owner SHANDONG ZHAOGUI POLYMER MATERIALS TECH CO LTD
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