Preparation method of flame-retardant rubber

A flame-retardant, rubber-based technology, which is applied to liquid cleaning methods, cleaning methods and utensils, chemical instruments and methods, etc., can solve the problems of low cleaning efficiency, inability to collect cleaning liquid efficiently, and low rubber processing efficiency. Achieve good flame retardant performance

Inactive Publication Date: 2021-01-22
广州皓科智技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing equipment cannot efficiently cut the rubber vertically and horizontally. At the same time, the cleaning efficiency during the cleaning process is not high, and the cleaning liquid after cleaning cannot be collected efficiently. After cleaning, a lot of cleaning liquid often remains on the surface of the rubber, resulting in a long It takes a long time to dry to remove the cleaning solution on the rubber surface, resulting in low processing efficiency of the entire rubber

Method used

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  • Preparation method of flame-retardant rubber
  • Preparation method of flame-retardant rubber
  • Preparation method of flame-retardant rubber

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A method for preparing flame-retardant rubber, comprising the steps of:

[0038] Step 1: In parts by weight, weigh 1 part of surface treatment agent, 40 parts of magnesium aluminum hydrotalcite, 10 parts of ammonium polyphosphate, 20 parts of magnesium hydroxide, and 80 parts of high viscosity α, ω-dihydroxy polydimethylsilane Oxane, 20 parts of high-viscosity silicone oil, 100 parts of nano-calcium carbonate, 20 parts of low-viscosity α, ω-dihydroxy polydimethylsiloxane, 15 parts of low-viscosity silicone oil, 50 parts of iron black, 50 parts of silicone oil, 3 1 part of crosslinking agent, 1 part of tackifier, 0.03 part of catalyzer, surface treatment is carried out to magnesium aluminum hydrotalcite with surface treatment agent, then stir, after stirring evenly, add ammonium polyphosphate and magnesium hydroxide, obtain filler after blending evenly;

[0039] Step 2: Stir and mix high-viscosity α, ω-dihydroxy polydimethylsiloxane, high-viscosity silicone oil and nano-...

Embodiment 2

[0048] A method for preparing flame-retardant rubber, comprising the steps of:

[0049] Step 1: In parts by weight, weigh 3 parts of surface treatment agent, 60 parts of magnesium aluminum hydrotalcite, 20 parts of ammonium polyphosphate, 50 parts of magnesium hydroxide, and 120 parts of high viscosity α, ω-dihydroxypolydimethylsilane Oxane, 30 parts of high-viscosity silicone oil, 150 parts of nano-calcium carbonate, 40 parts of low-viscosity α, ω-dihydroxy polydimethylsiloxane, 30 parts of low-viscosity silicone oil, 60 parts of iron black, 60 parts of silicone oil, 8 1 part of crosslinking agent, 6 parts of tackifier, 0.12 part of catalyzer, carry out surface treatment to magnesium aluminum hydrotalcite with surface treatment agent, then stir, after stirring evenly, add ammonium polyphosphate and magnesium hydroxide, obtain filler after blending evenly;

[0050] Step 2: Stir and mix high-viscosity α, ω-dihydroxy polydimethylsiloxane, high-viscosity silicone oil and nano-cal...

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Abstract

The invention discloses a preparation method of flame-retardant rubber. Magnesium-aluminum hydrotalcite and ammonium polyphosphate are heated to a certain temperature to generate an endothermic decomposition reaction so as to achieve a flame-retardant effect; the short-chain ammonium polyphosphate is then decomposed into phosphoric acid and ammonia at the temperature of 150 DEG C; when the temperature is about 200 DEG C, interlayer moisture of the magnesium-aluminum hydrotalcite is partially evaporated; and when the temperature reaches 250-450 DEG C, the magnesium-aluminum hydrotalcite loses more moisture, and CO2 is produced at the same time; when the temperature reaches 350 DEG C, magnesium hydroxide is heated to generate magnesium oxide, the magnesium oxide is attached to the outer layer of the silicone rubber to form a heat insulation layer, and at the moment, air can be partially prevented from making contact with substances in the heat insulation layer; meanwhile, the long-chainammonium polyphosphate is continuously decomposed to generate phosphoric acid and ammonia. When the temperature exceeds 600 DEG C, the magnesium-aluminum metal oxide formed by decomposing the magnesium-aluminum hydrotalcite starts to be sintered, so that the surface area of the magnesium-aluminum metal oxide is reduced.

Description

technical field [0001] The invention relates to the technical field of rubber preparation, in particular to a flame-retardant rubber preparation method. Background technique [0002] Rubber (Rubber) refers to a highly elastic polymer material with reversible deformation. It is elastic at room temperature, can produce large deformation under a small external force, and can return to its original shape after the external force is removed. Rubber is a completely amorphous polymer, its glass transition temperature (Tg) is low, and its molecular weight is often large, greater than hundreds of thousands. [0003] Existing rubber has low flame retardancy and low hardness. During the rubber preparation process, the obtained rubber needs to be cleaned and cut. The existing equipment cannot efficiently cut the rubber vertically and horizontally. At the same time, the cleaning efficiency during the cleaning process is not high, and the cleaning liquid after cleaning cannot be collect...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08K13/06C08K3/26C08K3/32C08K3/22B08B3/02B08B13/00B29B13/04B26D1/08B26D5/08B65G65/32
CPCB08B3/02B08B13/00B26D1/08B26D5/086B29B13/045B65G65/32C08K2003/2224C08K2003/265C08K2003/323C08K2201/011C08L83/04C08L2201/02C08L2205/025C08L2205/035C08K13/06C08K3/26C08K3/32C08K3/22
Inventor 陈胜
Owner 广州皓科智技术开发有限公司
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