Anti-tear silicone rubber compound and preparation method thereof

A compound rubber and tear-resistant technology, which is applied in the chemical industry, can solve the problems of poor oil resistance and tear resistance of silicone rubber, and achieve the effects of improving bonding, improving temperature resistance, and increasing oil resistance

Pending Publication Date: 2019-08-30
黄广展
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a tear-resistant silicon compound rubber and its preparation method in view of the poor oil resistance and tear resistance of silicone rubber at present

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The preparation method of silicone rubber base material is:

[0034](1) Take methyltrifluoropropylcyclotrisiloxane and add tetramethyltetravinylcyclotetrasiloxane and sodium hydroxide according to the mass ratio of 10~20:10~15:4~9, and vacuumize for 10~ 20min, heat up to 85~90℃, stir and mix for 20~30min, cool to room temperature, and obtain the cooling product, take methyltrifluoropropylcyclotrisiloxane and add four Methyltetravinylcyclotetrasiloxane, hydroxyfluorosilicone oil, heat up to 55~60°C and mix for 20~30min, add 0.1~0.3% methyltrifluoropropylcyclotrisiloxane cooling material, heat up to Stir and mix at 110~120°C for 60~90 minutes to obtain a stirred mixture;

[0035] (2) Take the stirred mixture and add phosphoric acid solution with a mass fraction of 50% according to the mass ratio of 100~200:1~5, stir and mix at 70~80°C for 20~40min, then heat up to 140~150°C for 30~50min, cool To room temperature, get the cooling substance a, take the cooling substance a...

Embodiment 1

[0050] Hoveyda-Grubbs second-generation catalyst: (1,3-bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(o-isopropoxybenzylidene)ruthenium.

[0051] The preparation method of silicone rubber base material is:

[0052] (1) Take methyltrifluoropropylcyclotrisiloxane and add tetramethyltetravinylcyclotetrasiloxane and sodium hydroxide in a mass ratio of 10:10:4, vacuumize for 10min, heat up to 85°C and stir to mix For 20 minutes, cool to room temperature to obtain a cooling product. Take methyltrifluoropropylcyclotrisiloxane and add tetramethyltetravinylcyclotetrasiloxane and hydroxyfluorosilicone oil in a mass ratio of 10:5:1, and heat up to 55 Stir and mix for 20 minutes at ℃, add 0.1% methyl trifluoropropyl cyclotrisiloxane cooling material, heat up to 110 ℃ and stir and mix for 60 minutes to obtain a stirred mixture;

[0053] (2) Take the stirred mixture and add phosphoric acid solution with a mass fraction of 50% according to the mass ratio of 100:1, stir and mix at...

Embodiment 2

[0068] Hoveyda-Grubbs second-generation catalyst: (1,3-bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(o-isopropoxybenzylidene)ruthenium.

[0069] The preparation method of silicone rubber base material is:

[0070] (1) Take methyltrifluoropropylcyclotrisiloxane and add tetramethyltetravinylcyclotetrasiloxane and sodium hydroxide at a mass ratio of 15:13:5, vacuumize for 15 minutes, heat up to 87°C and stir to mix For 25 minutes, cool to room temperature to obtain a cooling product. Take methyltrifluoropropylcyclotrisiloxane and add tetramethyltetravinylcyclotetrasiloxane and hydroxyfluorosilicone oil in a mass ratio of 20:8:2, and heat up to 58 Stir and mix for 25 minutes at ℃, add 0.2% methyl trifluoropropyl cyclotrisiloxane cooling material, heat up to 115 ℃ and stir and mix for 80 minutes to obtain a stirred mixture;

[0071] (2) Take the stirred mixture and add phosphoric acid solution with a mass fraction of 50% according to the mass ratio of 150:4, stir and m...

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PUM

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Abstract

The invention discloses an anti-tear silicone rubber compound and a preparation method thereof, and belongs to the field of chemical industry. According to a silicone rubber base material for preparation, fluorine-containing siloxane is added in a mixed rubber base material, so that oil resistance of the silicone rubber is improved, and advantage combination of the silicone rubber and a mixed rubber additive are increased. Mixed rubber filler for preparation is prepared by taking white carbon black and nano carbon tubes as raw materials, so that temperature resistance of the rubber compound isimproved, and bonding performance between the rubber compound and a the silicone rubber matrix is improved. A cross-linking additive for preparation is prepared by taking lac and fumaric acid as rawmaterials, and has relatively good tear resistance and tensile strength. Aramid fiber short fibers and aramid fiber pulp are added, so that cross-linking activity in a mixing process is improved. According to the invention, the silicone rubber base material is added to improve oil resistance, and mixed fibers are added in the mixing process, so that various properties of the rubber compound are well combined. According to the invention, the problems of poor oil resistance and poor tear resistance of existing silicone rubber are solved.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a tear-resistant silicon compound rubber and a preparation method thereof. Background technique [0002] Thermally vulcanized silicone rubber (silicon compound) has excellent properties such as temperature resistance, weather resistance, aging resistance, ozone resistance, fatigue resistance, etc.; at the same time, it has good electrical properties and does not change with changes in temperature and frequency; non-toxic and harmless , has good physiological inertia, and the compound rubber made by special formula has the above-mentioned various excellent properties. Therefore, it is suitable for the manufacture of various silicone rubber products, which are widely used in various industries of the national economy such as electronics, electric power industry, automobile machinery, daily household and medical care, and also play an important role in national defense a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L93/02C08L23/28C08L23/16C08L9/06C08L9/02C08L77/10C08K3/36C08K3/04C08K5/544C08K13/02
CPCC08L83/04C08L2205/035C08L2205/16C08L93/02C08L23/283C08L23/16C08L9/06C08L9/02C08L77/10C08K3/36C08K3/041C08K5/544C08K13/02
Inventor 黄广展
Owner 黄广展
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