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Radiation cross-linked low-smoke halogen-free flame-retardant locomotive oil-resistant electric cable material and preparation method thereof

A crosslinking type and cable material technology, applied in the direction of organic insulators, plastic/resin/wax insulators, etc., can solve the problems of low transmittance, heavy smoke, etc., achieve good low temperature resistance, improve oil resistance, and good phase capacitive effect

Inactive Publication Date: 2015-11-18
ORIGIANL DOW ADVANCED COMPOUNDS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN103524913A discloses a flame-retardant, oil-resistant and aging-resistant cable material, in which polyvinyl chloride is used as the main body of the resin, so the requirements for low-smoke and halogen-free EN50264 cannot be met
Chinese patent CN104672597A discloses a polyolefin material for oil-resistant locomotive cables. The flame retardancy is increased by adding a flame retardant synergist antimony trioxide, but the smoke after burning is thick and the transmittance is not high.

Method used

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  • Radiation cross-linked low-smoke halogen-free flame-retardant locomotive oil-resistant electric cable material and preparation method thereof
  • Radiation cross-linked low-smoke halogen-free flame-retardant locomotive oil-resistant electric cable material and preparation method thereof
  • Radiation cross-linked low-smoke halogen-free flame-retardant locomotive oil-resistant electric cable material and preparation method thereof

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Embodiment Construction

[0023] Further elaborate technical characteristics of the present invention below in conjunction with embodiment:

[0024] The method of obtaining the radiation cross-linked low-smoke halogen-free flame-retardant locomotive oil-resistant cable material is as follows:

[0025] In the following preferred embodiments, weigh the raw material components according to the ratio in Table 1, place them in a high-speed mixer and mix them for 4-8 minutes, then put the mixture into the twin-screw for plasticizing and kneading, and then enter the single-screw extruder Granulate. The processing temperature of twin-screw is: conveying section 115-125°C, melting section 120-135°C, mixing section 130-145°C, exhaust section 125-135°C, homogenizing section 140-150°C, head 140- 155°C, including single-screw temperature: 130-140°C in the first zone, 130-145°C in the second zone, 140-150°C in the third zone, 145-155°C in the head, granulated and air-cooled before packaging.

[0026] Table 1 is th...

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Abstract

The present invention discloses a radiation cross-linked low-smoke halogen-free flame-retardant locomotive oil-resistant electric cable material and a preparation method thereof. The raw materials of the material comprise, by weight, 35-65 parts of an ethylene-vinyl acetate copolymer, 30-50 parts of acrylamide grafted EVA, 5-15 parts of a compatilizer, 130-180 parts of a flame-retardant agent, 0.8-2 parts of an antioxidant, 0.5-1.5 parts of a lubricant, 0.1-5 parts of an auxiliary cross-linking agent, and 0.5-3 parts of a coupling agent. According to the present invention, the high VA content EVA with the VA content of 28-50% is used, the higher the VA content, the stronger the resin polarity and the better the low temperature resistance; the acrylamide grafted EVA resin is introduced, and the acrylamide adopted as the polar part is grafted onto the EVA, such that the good compatibility with the flame-retardant agent is provided, and the effectiveness of the flame-retardant agent is completely provided; the oil resistance of the electric cable is substantially improved through the strong polar structure; and the material further has the low smoke property.

Description

technical field [0001] The invention relates to a radiation cross-linked low-smoke, halogen-free, flame-retardant locomotive oil-resistant cable material and a preparation method thereof, in particular to a low-smoke, halogen-free, flame-retardant locomotive cable material with oil resistance. Background technique [0002] my country's rail transit construction is increasing day by day, and rail locomotives are gradually being updated and their safety levels are gradually improving. At the same time, with the proposal and advancement of the "One Belt, One Road" strategy, the transportation infrastructure is used as a breakthrough to realize the early harvest of Asian interconnection, and the priority is to deploy modern carriages for railway and highway projects between China and neighboring countries. Technology and new products are pushed to neighboring countries. [0003] Considering the safety of rail locomotives and humanized design, all kinds of wires and cables shoul...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L51/06C08K13/02C08K3/22C08K5/134C08K5/526C08K5/098C08K5/5425H01B3/44B29C47/92B29C48/92
CPCC08L23/0853B29C48/92B29C2948/92704C08L31/04C08L2201/02C08L2201/22C08L2203/202C08L2205/025C08L2205/03C08L2205/035C08L2205/08C08L2312/06H01B3/441C08L51/06C08K13/02C08K2003/2224C08K2003/2227C08K5/1345C08K5/098C08K5/5425C08K5/526
Inventor 蔡荷菲宋刚侯海良
Owner ORIGIANL DOW ADVANCED COMPOUNDS SHANGHAI
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