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Preparation method of ceramic silicon rubber composite material used for fire-resistant insulated cable

A ceramic silicone rubber, fire-resistant insulation technology, applied in the direction of rubber insulators, organic insulators, plastic/resin/wax insulators, etc., can solve the problems of cable loss of fire resistance and insulation functions, cable cracking, complicated manufacturing process, etc., to achieve good performance Effects of mechanical strength and insulation performance, ensuring continuous and stable transportation, and good shape retention

Inactive Publication Date: 2016-06-08
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are many disadvantages in the manufacture and application of magnesia mineral refractory insulated cables: although magnesia mineral refractory insulated cables have good fire resistance properties, their manufacturing process is complicated, the production cost is high,
On the one hand, the processing technology of this kind of cable is relatively complicated. On the other hand, after the outer sheath of the cable is burned in fire, it is easy to cause the mica layer and insulating layer to fall off, and eventually the cable loses its fire resistance and insulation functions.
[0008] Chinese patent CN101404189B discloses a preparation method of rapid ceramic refractory cable material, using ethylene-vinyl acetate copolymer and polyethylene as the matrix, adding a certain amount of ceramic filler, flame retardant, coupling agent, lubricant, The anti-oxidant has produced a cable material that can be quickly ceramiced under high temperature conditions. However, due to the addition of a large amount of porcelain-forming fillers containing low-melting point components, the cable material will undergo obvious volume shrinkage at high temperatures, resulting in cable cracks. , cannot guarantee the safety and smoothness of the line for a long time

Method used

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  • Preparation method of ceramic silicon rubber composite material used for fire-resistant insulated cable
  • Preparation method of ceramic silicon rubber composite material used for fire-resistant insulated cable
  • Preparation method of ceramic silicon rubber composite material used for fire-resistant insulated cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] First weigh 100g of kaolin into a beaker, add 100g of ethanol and 5g of deionized water, then add 2g of coupling agent KH550 and 1g of acetic acid, stir for 5 minutes and pour it into a grinder for grinding at a speed of 3000r / min for 1h , after grinding, put it into an oven for drying, and then crush it for later use.

[0029] Then weigh 100g of methyl vinyl silicone rubber with a Shore hardness of 60HA and put it into an open kneading machine for 5 minutes of mixing, then add 25g of 1mm glass fiber, 15g of kaolin treated by the above process, and 0.5g of anti-aging agent in multiple times 4010A, after the mixture is evenly mixed, add 1.5g of double 25 vulcanizing agent, continue mixing for 5 minutes, and then thin pass 5 times. The ceramic silicone rubber composite material used for fire-resistant insulating cables can be prepared.

[0030] Silicone rubber composite material of the present invention is tested according to national standards, and the results are as fo...

Embodiment 2

[0034] Weigh 100g of methyl vinyl silicone rubber with a Shore hardness of 50HA and put it into an open kneading machine for 5 minutes of kneading, and then add 10g of 0.15mm glass fiber, 30g of wollastonite, and 0.2g of anti-aging agent 264 several times. After the mixture is evenly mixed, add 1.5g of double 25 vulcanizing agent, continue mixing for 5 minutes, and then thin pass 10 times. The ceramic silicone rubber composite material used for fire-resistant insulating cables can be prepared.

[0035] Silicone rubber composite material of the present invention is tested according to national standards, and the results are as follows:

[0036]

[0037] The sample can form self-supporting ceramics when it is exposed to fire, and the higher the temperature and the longer the time, the better the ceramicization effect.

Embodiment 3

[0039] First weigh 200g of mica into a beaker, add 400g of ethanol and 17g of deionized water, then add 5g of coupling agent KH550 and 5g of acetic acid, stir for 10 minutes and pour it into a grinder for grinding at a speed of 1000r / min for 5h , after grinding, put it into an oven for drying, and then crush it for later use.

[0040] Then weigh 100g of methyl vinyl silicone rubber with a Shore hardness of 60HA and put it into an open kneading machine for 5 minutes of mixing, then add 10g of alumina fiber, 6g of zinc borate, and 24g of Mica, 0.5g anti-aging agent H, after the mixture is evenly mixed, add 1.5g double 25 vulcanizing agent, continue mixing for 5 minutes, and then thin pass 7 times. The ceramic silicone rubber composite material used for fire-resistant insulating cables can be prepared.

[0041] Silicone rubber composite material of the present invention is tested according to national standards, and the results are as follows:

[0042]

[0043] The sample ca...

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Abstract

The invention relates to a preparation method of a ceramic silicon rubber composite material used for a fire-resistant insulated cable and belongs to the technical field of functional materials. According to the formula, the ceramic silicon rubber composite material used for the fire-resistant insulated cable is prepared from, by mass, 100 parts of methyl vinyl silicone rubber, 5-30 parts of inorganic fiber filling, 10-40 parts of ceramic powder and 0.1-1 part of anti-aging agent. The ceramic silicon rubber composite material used for the fire-resistant insulated cable has excellent fire resistance and outstanding shape-keeping capacity, can be ablated into a hard ceramic shell under continuous combustion of flames, protects the burnt object from damage, achieves a good fire-resistant effect and meanwhile will be free of large size deformation, shrinkage and cracking under a high-temperature condition. The ceramic silicon rubber composite material has the advantages of being low in cost, simple in production technology, free of toxin and environmentally friendly and achieving the effect of low smoke zero halogen.

Description

technical field [0001] The invention relates to a ceramic silicon rubber composite material used for fire-resistant insulating cables and a preparation method thereof, belonging to the technical field of functional materials. Background technique [0002] In recent years, with the development of society, economy and science and technology, combustibles and inflammables are widely used in public places, and the frequency of fires is also increasing, which has caused great harm to people's lives and properties. In the event of a fire accident, how to ensure the safety and smooth flow of cables is crucial to fire prevention and fire fighting. It can not only maximize the precious rescue time, but also greatly reduce casualties and property losses. [0003] At present, most fire-resistant cables at home and abroad use magnesium oxide mineral fire-resistant insulation or mica tape winding to achieve fire-resistant functions, and a small amount of composite materials that have cer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08K13/06C08K9/06C08K9/04C08K3/34C08K7/14C08K13/04C08K7/08C08K3/38H01B3/28H01B3/40
CPCC08K13/06C08K3/34C08K3/346C08K3/38C08K3/40C08K7/08C08K7/14C08K9/04C08K9/06C08K13/04C08K2003/387C08L2201/02C08L2201/22C08L2203/202H01B3/28
Inventor 王金合施利毅闫远滔赵迪李文君
Owner SHANGHAI UNIV
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