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Preparation process of novel flame-retardant silicone rubber

A preparation process, silicone rubber technology, applied in the field of rubber manufacturing, can solve the problems of fire prevention, high temperature resistance and leakage resistance, and achieve good flame retardant effect

Active Publication Date: 2013-01-16
SICHUAN KELIXIN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of the existing silicone rubber in terms of fire resistance, high temperature resistance and leakage resistance, and to provide a preparation process for flame retardant silicone rubber.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation technology of novel flame-retardant silicone rubber comprises the following steps:

[0026] A. Stir 40 parts by mass of magnesium aluminum hydrotalcite, and spray 1 part by mass of gamma-aminopropyl triethoxysilane at the same time, add 10 parts by mass of ammonium polyphosphate and 20 parts by mass of ammonium polyphosphate after stirring for 40 minutes The magnesium hydroxide of several, obtain filler after blending 30min;

[0027] B. Stir and mix 80 parts by mass of α, ω-dihydroxypolydimethylsiloxane with a viscosity of 10000 mPa*s, 20 parts by mass of ethyl silicone oil with a viscosity of 500 mPa*s, and 100 parts by mass of nano-calcium carbonate After uniformity, heat and dehumidify to obtain the bottom material;

[0028] C. After grinding the primer, add 20 parts by mass of α,ω-dihydroxy polydimethylsiloxane with a viscosity of 1500mPa*s and 15 parts by mass of ethyl silicone oil with a viscosity of 100mPa*s, and stir evenly After soaking for...

Embodiment 2

[0035] The preparation technology of novel flame-retardant silicone rubber comprises the following steps:

[0036] A. Stir 60 parts by mass of magnesium aluminum hydrotalcite, spray 3 parts by mass of misty hexamethyldisilazane at the same time, add 20 parts by mass of ammonium polyphosphate and 50 parts by mass of hydrogen after stirring for 40 minutes Magnesium oxide, obtain filler after blending 30min;

[0037] B. Stir and mix 120 parts by mass of α, ω-dihydroxy polydimethylsiloxane with a viscosity of 20000 mPa*s, 30 parts by mass of methyl silicone oil with a viscosity of 1000 mPa*s, and 150 parts by mass of nano-calcium carbonate After uniformity, heat and dehumidify to obtain the bottom material;

[0038] C. After grinding the primer, add 20 parts by mass of α,ω-dihydroxy polydimethylsiloxane with a viscosity of 2000mPa*s and 30 parts by mass of methyl silicone oil with a viscosity of 350mPa*s, and stir evenly After soaking for 15 minutes;

[0039] D. Mix the fil...

Embodiment 3

[0045] The preparation technology of novel flame-retardant silicone rubber comprises the following steps:

[0046] A. Stir the magnesium aluminum hydrotalcite of 50 parts by mass, spray 2 parts by mass of bromopropyl triethoxysilane at the same time, stir for 40 minutes and add 15 parts by mass of ammonium polyphosphate and 30 parts by mass of Magnesium hydroxide, obtain filler after blending 30min;

[0047]B. 100 parts by mass of α with a viscosity of 80000 mPa*s, 100 parts by mass of ω-dihydroxypolydimethylsiloxane, 25 parts by mass of methylphenyl silicone oil with a viscosity of 500 mPa*s, and 120 parts by mass of nano calcium carbonate After stirring and mixing evenly, heat and dehumidify to obtain the base material;

[0048] C. After grinding the primer, add 30 parts by mass of α, ω-dihydroxy polydimethylsiloxane with a viscosity of 1500mPa*s and 22 parts by mass of methylphenyl silicone oil with a viscosity of 100mPa*s, After stirring evenly, debubble for 15 minute...

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Abstract

The invention discloses a preparation process of novel flame-retardant silicone rubber. The preparation process includes: mixing hydrotalcite, ammonium polyphosphate and magnesium hydroxide to obtain filler, mixing alpha, omega-dihydroxy polydimethyl siloxane, silicone oil and nano calcium carbonate to obtain substrate, mixing the substrate and the filler to obtain base stock, mixing iron black, silicone oil, cross-linking agent, thickening agent and catalyst for reaction to obtain color paste, and mixing the base stock with the color paste to obtain the novel flame-retardant silicone rubber. The hydrotalcite, the ammonium polyphosphate and the magnesium hydroxide are heated to certain temperature for endothermic decomposition reaction so as to achieve flame retarding. The preparation process has the advantages that the prepared novel flame-retardant silicone rubber has fine flame retardancy up to level FV-0.

Description

technical field [0001] The invention relates to the field of rubber manufacturing, in particular to a preparation process of flame-retardant silicone rubber. Background technique [0002] Silicone rubber is a silicon elastomer that appeared in the 1960s. It can be cured without heating or pressure at room temperature. It has been widely used as a sealant since it came out. At the same time, silicone rubber also has excellent insulation, weather resistance, moisture resistance, shock resistance, pressure resistance and physiological inertia, and is widely used in construction, automobiles, electronics, chemicals, machinery, aerospace, medical equipment and other fields. However, silicone rubber contains a large amount of C and H, which makes silicone rubber easy to burn, and its fire resistance, high temperature resistance, and leakage resistance are poor. The above defects greatly limit the scope of use of silicone rubber. Contents of the invention [0003] The purpose o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/06C08L83/04C08K13/06C08K9/04C08K9/06C08K3/26C08K3/32C08K3/22C08J3/24
Inventor 孙建厅
Owner SICHUAN KELIXIN NEW MATERIALS CO LTD
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