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Add-on type liquid silicon rubber/organic montmorillonite nanometer composite material and its preparation method

A technology of nanocomposite materials and organic montmorillonite, applied in the field of addition-type liquid silicone rubber nanocomposite materials and their preparation

Inactive Publication Date: 2007-01-17
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved in the present invention is to disclose a kind of addition-type liquid silicone rubber / organic montmorillonite nanocomposite material and its preparation method, so as to overcome the defects of existing materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Get 1 gram of Na-montmorillonite, 0.7 gram of dimethyloltrimethyldodecyl ammonium bromide and 0.1 gram of hydrochloric acid into a 250 milliliter three-necked flask, and add 15 milliliters of ethanol with a weight concentration of 70% Aqueous solution, heated to about 75°C, temperature controlled, stirred for 15 minutes. The product was filtered and washed by suction, and then treated with AgNO 3 (0.1 mol / L) test until there is no more white precipitate. Finally, vacuum-dry it at 120° C. for 2 hours and take it out to obtain the organic montmorillonite of the present invention.

[0031] Add 1 gram of organic montmorillonite to 49.5 grams of silicone rubber component A, stir for 3 hours, then add 49.5 grams of silicone rubber component B and 0.2 gram of chloroplatinic acid, and stir for 0.5 hours to obtain the addition-type silicon rubber of the present invention. Rubber nanocomposites.

[0032] According to GB 7124-86, T2 copper was used as the bonding sample in the ...

Embodiment 2

[0034] Get 2 grams of Na-montmorillonite, 1.4 grams of dimethyloltrimethyldodecyl ammonium bromide and 0.2 gram of hydrochloric acid into a 250 milliliter three-necked flask, and add 30 milliliters of 50% ethanol solution by weight, Heat to about 80°C, control the temperature, and stir for 15 minutes. The product was filtered and washed by suction, and then treated with AgNO 3 (0.1 mol / L) test until there is no more white precipitate. Finally, vacuum-dry it at 120° C. for 2 hours and take it out to obtain the organic montmorillonite of the present invention.

[0035] Add 2 grams of organic montmorillonite to 49 grams of silicone rubber component A, stir for 4 hours, then add 49 grams of silicone rubber component B and 0.2 gram of chloroplatinic acid, and stir for 1 hour to obtain the addition-type silicon rubber of the present invention. Rubber nanocomposites.

[0036] According to GB 7124-86, T2 copper is used as the bonding sample, the sample size is 100×25×2mm, and its s...

Embodiment 3

[0038] Get 3 grams of Na-montmorillonite, 2.1 grams of dimethyloltrimethyldodecylammonium bromide and 0.3 gram of hydrochloric acid into a 250 milliliter three-necked flask, and add 45 milliliters of 30% ethanol aqueous solution with a weight concentration, Heat to about 80°C, control the temperature, and stir for 15 minutes. The product was filtered and washed by suction, and then treated with AgNO 3 (0.1 mol / L) test until there is no more white precipitate. Finally, vacuum-dry it at 120° C. for 2 hours and take it out to obtain the organic montmorillonite of the present invention.

[0039] Add 3 grams of organic montmorillonite to 48.5 grams of silicone rubber component A, stir vigorously for 2 hours, then add 48.5 grams of silicone rubber component B and 0.2 gram of chloroplatinic acid, and stir for 0.1 hour to obtain the addition-type compound of the present invention. Silicone rubber nanocomposites.

[0040] According to GB 7124-86, T2 copper is used as the bonding sam...

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Abstract

The invention discloses a liquid silicon rubber / organic montmorillonite nano composite material and its preparing process by employing in-situ aggregation intercalation technology, after the montmorillonite's intercalation, it can be dispersed into polymeric matrix by the form of nano sheets, which will show a small dimensional effect, boundary effect and quantum tunnelling effect. The contact plane and activity can be increased substantially.

Description

technical field [0001] The invention relates to an addition-type liquid silicone rubber nanocomposite material containing montmorillonite 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] Silicone rubber has excellent heat aging resistance and weather aging resistance, and is very stable against ultraviolet rays and ozone. The silicone chain is in a helical configuration, the molecular chains are highly flexible, and the interaction force between the molecular chains is weak. These structural features make its vulcanizate soft and elastic, but its physical and mechanical properties are poor. [0004] The addition-type room temperature adhesive is b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/00C08K9/04
Inventor 王锦成陈月辉
Owner SHANGHAI UNIV OF ENG SCI
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