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Halogen-free flame-retardant high-strength ceramizable silicone rubber

A high-strength, silicone rubber technology, applied in the field of rubber materials, can solve the problems of ceramic silicone rubber flame retardancy, poor mechanical properties, and difficult practical requirements, and achieve high flame retardancy, high crust strength, and tensile strength high effect

Inactive Publication Date: 2015-11-04
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new type of material made up entirely of nonhalide materials that have excellent properties such as strong cushions or durability against burning without generating harmful gases during fires. It also does this effectively at very low levels for environmental purposes compared to traditional methods like plasterboard lining.

Problems solved by technology

This patented technical problem addressed in this patents relates to finding ways to improve fire resistance without requiring extra facilities such as metal pipelines used at home locations where fires occur frequently due to lack of space available for installation of these devices.

Method used

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  • Halogen-free flame-retardant high-strength ceramizable silicone rubber
  • Halogen-free flame-retardant high-strength ceramizable silicone rubber
  • Halogen-free flame-retardant high-strength ceramizable silicone rubber

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Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1, a kind of halogen-free flame-retardant high-strength porcelainable silicone rubber of the present invention, its raw material is prepared according to the composition of parts by weight, specifically as follows:

[0023] Weigh 100g of methyl vinyl silicone rubber, 15g of zinc borate, 20g of aluminum hydroxide treated by the aforementioned process, 14g of magnesium hydroxide, 8g of MCA-JN, 2g of MPOP, and 1g of antioxidant 1010 through the aforementioned process. These substances are prepared sequentially according to the steps of the above-mentioned preparation method, and then a halogen-free flame-retardant high-strength porcelain-able silicone rubber can be obtained.

[0024] After the silicone rubber of the present invention is vulcanized at 170°C for 5 minutes, it is tested according to national standards, and the results are as follows:

[0025]

[0026] The ceramizable silicone rubber can form self-supporting ceramic objects when exposed to fire, ...

Embodiment 2

[0026] The ceramizable silicone rubber can form self-supporting ceramic objects when exposed to fire, and the higher the temperature and the longer the time, the better the ceramization effect. Embodiment 2, a halogen-free flame-retardant high-strength porcelainable silicone rubber of the present invention, its raw materials are prepared according to the composition of parts by weight, specifically as follows:

[0027] Weigh 100g of methyl vinyl silicone rubber, 20g of hydrotalcite, 10g of zinc borate, 5g of glass powder, 20g of MCA-JN, 4g of MPOP, and 1g of antioxidant 1330, and prepare the above-mentioned substances sequentially according to the steps of the above-mentioned preparation method, Halogen-free, flame-retardant and high-strength porcelain-able silicone rubber can be prepared.

[0028] After the silicone rubber of the present invention was vulcanized at 170°C for 5 minutes, it was tested according to national standards, and the results were as follows:

[0029] ...

Embodiment 3

[0031] Embodiment 3, a kind of halogen-free flame-retardant high-strength porcelainable silicone rubber of the present invention, its raw materials are prepared according to the composition of parts by weight, specifically as follows:

[0032] Weigh 100g of methyl vinyl silicone rubber, 14g of aluminum hydroxide treated by the aforementioned process, 10g of zinc borate, 10g of light calcium carbonate, 5g of magnesium oxide, 20g of MCA-JN, and 1g of antioxidant 330. According to the steps of the above preparation method, the halogen-free, flame-retardant and high-strength porcelain-able silicone rubber can be prepared.

[0033] After the silicone rubber of the present invention was vulcanized at 170°C for 5 minutes, it was tested according to national standards, and the results were as follows:

[0034]

[0035] The ceramizable silicone rubber can form self-supporting ceramic objects when exposed to fire, and the higher the temperature and the longer the time, the better the...

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Abstract

The invention discloses a halogen-free flame-retardant high-strength ceramizable silicon rubber. The rubber comprises raw materials composed of the following components by weight: 100 parts of methylvinyl silicone rubber, 10 to 50 parts of a halogen-free flame retardant, 4 to 40 parts of ceramizing powder and 1 to 5 parts of an antioxidant. The preparation method for the rubber comprises the following steps: firstly subjecting the methylvinyl silicone rubber to mixing in an open type rubber mixing machine for 3 to 5 minutes; then successively adding the halogen-free flame retardant and the ceramizing powder, carrying out full mixing after each addition so as to uniformly mix the mixture; and then adding a vulcanizing agent and carrying out mixing for 3 to 5 minutes; and finally carrying out thin-passing in the open type rubber mixing machine for 5 to 10 times so as to obtain the halogen-free flame-retardant high-strength ceramizable silicone rubber. The ceramizable silicone rubber has the characteristics of high crusting hardness, high tensile strength, high flame retardant level and no halogen; meanwhile, in the case of fire, since a cable keeps combusting under the fire, the halogen-free flame-retardant high-strength ceramizable silicone rubber may transform into a ceramic-shaped hard shell body which can stop the fire from continuous inward combustion and protect internal objects in the cable from damage, so an electric transmission line can continuously transfer electricity.

Description

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Claims

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Application Information

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Owner SHANGHAI UNIV
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