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Heat cured silicon rubber nano composite material and preparation process thereof

A silicon rubber nano-composite material technology is applied in the field of thermally vulcanized silicon rubber nano-composite materials and its preparation, and achieves the effects of increasing the contact surface and activity and improving the elongation at break.

Inactive Publication Date: 2009-04-22
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The mixing process problem to be solved in the present invention is to disclose a heat vulcanized silicone rubber nanocomposite material and its preparation method to overcome the defects of existing materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] First, 70 grams of methyl vinyl silicone rubber (raw rubber) was dissolved in 100 milliliters of toluene solution to make a solution with a lower viscosity; then 30 grams of organic montmorillonite was poured into the above solution and stirred for 1 hour to obtain nano Silicone rubber solution of organic montmorillonite; finally, leave the silicone rubber solution at room temperature for 30 hours, and put it in a drying oven at 40°C for 12 hours to completely remove the toluene solvent in the silicone rubber to obtain a 30% organic montmorillonite masterbatch.

[0027] 50 grams of methyl vinyl silicone rubber (raw rubber) and 50 grams of 30% organic montmorillonite masterbatch were mixed on an open mill at 30 ° C for 0.5 hours, and then 0.5 grams of 2,4-ditertbutyl peroxide was added. Oxyhexane, after mixing for 20 minutes, the film is released, and then the above-mentioned film is vulcanized on a flat vulcanizer, and the vulcanization condition is 165 ° C × 10 minutes...

Embodiment 2

[0029] First 60 grams of methyl vinyl silicone rubber (raw rubber) are dissolved in 90 milliliters of toluene solution to make a solution with lower viscosity; then 40 grams of organic montmorillonite are slowly poured into the above solution, stirred for 2 hours, and obtained The silicone rubber solution of nano-organic montmorillonite; finally, leave the silicone rubber solution at room temperature for 24 hours, and put it in a drying oven at 50° C. for 10 hours to completely remove the toluene solvent in the silicone rubber to obtain 40% organic montmorillonite masterbatch.

[0030] 50 grams of methyl vinyl silicone rubber (raw rubber) and 50 grams of 40% organic montmorillonite masterbatch were mixed on an open mill at 40°C for 0.3 hours, and then 0.6 grams of 2,4-ditertbutyl peroxide was added. Hexane, after mixing for 30 minutes, the film is released, and the above-mentioned film is vulcanized on a flat vulcanizer, and the vulcanization condition is 170 ° C × 8 minutes t...

Embodiment 3

[0032] First 50 grams of methyl vinyl silicone rubber (raw rubber) were dissolved in 80 milliliters of toluene solution to make a solution with lower viscosity; then 50 grams of organic montmorillonite was slowly poured into the above solution, stirred for 3 hours, and obtained a solution containing The silicone rubber solution of nano-organic montmorillonite; finally, leave the silicone rubber solution at room temperature for 12 hours, then put it in a drying box and dry it at 60°C for 8 hours, completely remove the toluene solvent in the silicone rubber, and obtain 50% organic montmorillonite masterbatch.

[0033] 50 grams of methyl vinyl silicone rubber (raw rubber) and 50 grams of 50% organic montmorillonite masterbatch were mixed for 0.2 hours at 50 ° C on an open mill, and then 0.7 grams of 2,4-ditertbutylperoxyhexane Alkanes, kneading for 10 minutes to take out the sheet, vulcanize the above film on a flat vulcanizer, the vulcanization condition is 175 ° C × 5 minutes, ...

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Abstract

The invention discloses a heat sulfurizing typed silicon rubber nanometer composite material and making method, which comprises the following parts: 50% raw rubber of methyl vinyl silicon rubber, 0.5-0.8% 2, 4-ditert-butyl peroxy hexane and 49.2-49.5% organic montmorillonite masterbatch. The invention enlarges chemical reaction contact area and acitivty, which improves stretching strength and fracture extending rate obviously.

Description

technical field [0001] The invention relates to a thermally vulcanized silicone rubber nanocomposite material and a preparation method thereof, in particular to a thermally vulcanized silicone rubber nanocomposite material using an organic montmorillonite masterbatch mixing process and a preparation method thereof. Background technique [0002] Silicone rubber is a polymer elastic material with both inorganic and organic molecular chains. Its molecular main chain is composed of silicon atoms and oxygen atoms alternately. The silicon-oxygen bond is much larger than the general carbon-carbon bond. So that silicone rubber has high thermal stability. [0003] Heat vulcanized silicone rubber is the most important type of silicone rubber products, and methyl vinyl silicone rubber is the most important variety, commonly known as high temperature rubber. Methyl vinyl silicone rubber (raw rubber) is a colorless, odorless, non-toxic, and free of mechanical impurities. The raw rubber ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C08K9/04C08K3/34C08K5/14
Inventor 王锦成陈月辉
Owner SHANGHAI UNIV OF ENG SCI