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Hot vulcanization type flame-retardant silicon rubber composite material and preparation method of hot vulcanization type flame-retardant silicon rubber composite material

A composite material, thermal vulcanization technology, applied in chemical instruments and methods, boron compounds, inorganic chemistry, etc., to achieve the effects of easy large-scale production, strong controllability, and improved flame retardant and smoke suppression properties

Active Publication Date: 2014-08-06
浙江沪天胶带有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far there is no relevant report on the application of hydrotalcites in silicone rubber to prepare thermally vulcanized flame-retardant composites.

Method used

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  • Hot vulcanization type flame-retardant silicon rubber composite material and preparation method of hot vulcanization type flame-retardant silicon rubber composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 4 moles of Zn(NO 3 ) 2 ·6H 2 O and 1 mole of Fe(NO 3 ) 3 9H 2 O was dissolved in 1 liter of water to prepare a mixed brine solution; 2 moles of NaOH and 1 mole of Na 2 B 4 o 7 10H 2 O was dissolved in 1 liter of water to prepare a mixed alkaline aqueous solution; at a temperature of 40°C and a stirring speed of 2000 rpm, the above-mentioned mixed alkaline aqueous solution was dropped dropwise into the above-mentioned mixed salt solution until the mixed solution system formed The pH value is 9; the obtained product is aged at 60°C for 24 hours, then washed with acetone, and then dried at 80°C for 24 hours to obtain a hydrotalcite-like substance containing zinc, boron and iron.

[0029] Weigh 85 grams of methyl vinyl silicone rubber raw rubber and 15 grams of hydrotalcites containing zinc, boron and iron, and mix them evenly on an open mill; then add 0.2 grams of vulcanizing agent 2,5-dimethyl-2 , 5-bis-(tert-butylperoxy)hexane, after mixing evenly, the film is r...

Embodiment 2

[0035] 4.5 moles of Zn(NO 3 ) 2 ·6H 2 O and 1 mole of Fe(NO 3 ) 3 9H 2 O was dissolved in 2 liters of water to prepare a mixed brine solution; 2.5 moles of NaOH and 1 mole of Na 2 B 4 o 7 10H 2 O was dissolved in 2 liters of water to prepare a mixed alkali aqueous solution; at a temperature of 50°C and a stirring speed of 1750 rpm, the above-mentioned mixed alkali aqueous solution was dropped dropwise into the above-mentioned mixed salt solution until the mixed solution system formed The pH value is 9.5; the obtained product is aged at 65°C for 21 hours, washed with acetone, and dried at 85°C for 18 hours to obtain a hydrotalcite-like substance containing zinc, boron and iron.

[0036]Weigh 90 grams of methyl vinyl silicone rubber raw rubber and 10 grams of hydrotalcites containing zinc, boron and iron, and mix them evenly on an open mill; then add 0.4 grams of vulcanizing agent 2,5-dimethyl-2 , 5-bis-(tert-butylperoxy)hexane, after mixing evenly, the film is released...

Embodiment 3

[0042] 5 moles of Zn(NO 3 ) 2 ·6H 2 O and 1 mole of Fe(NO 3 ) 3 9H 2 O was dissolved in 3 liters of water to prepare a mixed salt solution; 3 moles of NaOH and 1 mole of Na 2 B 4 o 7 10H 2 O was dissolved in 3 liters of water to prepare a mixed alkali aqueous solution; at a temperature of 60°C and a stirring speed of 1500 rpm, the above-mentioned mixed alkali aqueous solution was dropped dropwise into the above-mentioned mixed salt solution until the mixed solution system formed The pH value is 10; the obtained product is aged at 70°C for 18 hours, washed with acetone, and dried at 90°C for 12 hours to obtain a hydrotalcite-like substance containing zinc, boron and iron.

[0043] Weigh 95 grams of methyl vinyl silicone rubber raw rubber and 5 grams of hydrotalcites containing zinc, boron and iron, and mix evenly on an open mill; then add 0.6 grams of vulcanizing agent 2,5-dimethyl-2 , 5-bis-(tert-butylperoxy)hexane, after mixing evenly, release the film; vulcanize the...

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Abstract

The invention discloses a hot vulcanization type flame-retardant silicon rubber composite material and a preparation method of the composite material. The composite material is obtained from hot vulcanization type silicon rubber raw rubber and hydrotalcite-like compounds containing zinc, boron and iron through mixed smelting and vulcanization. The preparation method of the material comprises the following preparation steps that firstly, the hot vulcanization type silicon rubber raw rubber and the hydrotalcite-like compounds containing zinc, boron and iron in the proportioning quantity are subjected to uniform mixed smelting; then, vulcanizing agents are added, and sheet discharge is carried out after the uniform mixed smelting; and finally, the vulcanization is carried out. The hot vulcanization type flame-retardant silicon rubber composite material provided by the invention has obvious flame-retardant and smoke suppression performances, and in addition, the physical mechanical performance is excellent. In addition, the preparation process of the composite material is economic and practical, the controllability is high, the cost is low, the large-scale production is easily realized, and the practicability is realized.

Description

technical field [0001] The invention relates to a flame-retardant silicone rubber composite material and a preparation method thereof, in particular to a heat-vulcanized flame-retardant silicone rubber composite material and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Thermally vulcanized silicone rubber refers to high molecular weight (400,000 to 600,000) silicone rubber. Using organic peroxides as vulcanizing agents, the organic peroxides are decomposed by heating to generate free radicals, and form cross-links with the organic side groups of rubber to obtain vulcanized rubber. Thermally vulcanized silicone rubber is the earliest application of a large class of rubber. There have been many varieties since its development. According to different chemical compositions, it can be divided into: dimethyl silicone rubber, methyl vinyl silicone rubber, methyl vinyl phenyl Silicone rubber, methyl vinyl trifluo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08K3/38C08K5/14C01B35/00
Inventor 王锦成杜有成吴鼎董星宇赵艺
Owner 浙江沪天胶带有限公司
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