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Formula and preparation method of radiation cross-linked low-smoke halogen-free cable material with temperature resistance level of 150°C

A cable material and irradiation technology, applied in the direction of insulating cables, cables, circuits, etc., can solve the problems of easy aging and embrittlement, difficulty in flame retardancy and mechanical properties, easy loss of wire and cable protection performance, etc.

Active Publication Date: 2016-03-16
上海至正新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is still relatively difficult to solve the contradiction between flame retardancy and mechanical properties by adopting such a method.
[0004] In addition, when the normal service temperature is 150°C, the material is prone to aging and embrittlement due to long-term exposure to high temperature
The material is easy to lose the protective performance of the wire and cable

Method used

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  • Formula and preparation method of radiation cross-linked low-smoke halogen-free cable material with temperature resistance level of 150°C
  • Formula and preparation method of radiation cross-linked low-smoke halogen-free cable material with temperature resistance level of 150°C
  • Formula and preparation method of radiation cross-linked low-smoke halogen-free cable material with temperature resistance level of 150°C

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preparation example Construction

[0091] The second aspect of the present invention provides a method for preparing an irradiation crosslinked low-smoke halogen-free cable material with a temperature resistance level of 150°C as described in the present invention, comprising the following process steps:

[0092] Each component of the cable material according to the present invention is provided;

[0093] Mix the flame retardant according to the proportion until the temperature reaches 110±5°C, add the lubricant and stir for 3-6 minutes to discharge;

[0094] Add each component to the internal mixer one by one, banbury and mix and discharge;

[0095] A twin-screw granulator is used to extrude and granulate to obtain an irradiation cross-linked low-smoke halogen-free cable material with a temperature resistance level of 150°C.

[0096] In a specific embodiment of the present invention, the four temperature sections in the extrusion granulation process are: feeding section 100-115°C, conveying section 100-115°C,...

Embodiment 1

[0108]

[0109] The preparation method of the above-mentioned invention, it comprises the following processing steps:

[0110] The flame retardant is mixed in a high-speed mixer according to the proportion and mixed at a high speed until the temperature reaches 110°C. After adding zinc stearate, stir for 3 to 6 minutes and discharge. The treated flame retardant, anti-aging agent, resin, compatibilizer, lubricant, cross-linking sensitizer, and coupling agent are added to the internal mixer. The material is plasticized in the internal mixer, and the powder and resin are fused together to discharge; the twin-screw granulator (manufactured by Nanjing Ruiya Polymer Equipment Co., Ltd.) is extruded and granulated. The four temperature sections in the extrusion granulation process are: feeding section 100-115°C, conveying section 100-115°C, melting section 120-130°C, and machine head 125-135°C.

[0111] The product in embodiment 1 is carried out performance detection test, and ea...

Embodiment 2

[0115]

[0116]

[0117] The preparation method of above-mentioned cable material is identical with embodiment 1

[0118]

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Abstract

The invention provides an irradiation crosslinking low-smoke zero-halogen cable material with temperature resistance level of 150 DEG C, which comprises the following components in parts by weight: base resin, a flame retardant, 3-10 parts of compatilizer, 3-8 parts of antioxidant, 0.2-2 parts of lubricant, 0.5-2 parts of coupling agent and 2-10 parts of crosslinking sensitizer, wherein the base resin is selected from a mixture of ethylene-vinyl acetate (EVA), very low density polyethylene (VLDPE) and styrene-ethylene / butylene-styrene block copolymer (SEBS) and comprises 60-80 parts of EVA, 5-30 parts of SEBS and 5-30 parts of VLDPE; and the flame retardant comprises 70-190 parts of magnesium hydroxide, 5-25 parts of melamine borate and 5-25 parts of antimony trioxide. The irradiation crosslinking low-smoke zero-halogen cable material with temperature resistance level of 150 DEG C provided by the invention has good heat resistance and excellent processability.

Description

technical field [0001] The invention relates to a formula and a preparation method of a low-smoke, halogen-free cable material, in particular to a radiation-crosslinked low-smoke, halogen-free, flame-retardant cable material with a temperature resistance level of 150°C and a preparation method. Background technique [0002] When the cable is under the load current, it will generally generate heat. In addition, the cable is generally routed in a closed environment, so it is easier to keep the temperature of the cable high, and it is easy to cause a fire at this time. Therefore, general cable materials are required to be flame retardant. In the past, most electrical materials used halogen-containing flame-retardant materials. Although they have excellent flame-retardant effects, they will release a large amount of toxic fumes when burned, which will cause great harm to the human body and equipment. Recently, with the stringent environmental regulations, halogen-containing she...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L23/06C08L53/02C08K13/02C08K3/22C08K5/3492C08K5/13C08K5/134C08K5/372C08J3/28C08J3/24H01B7/295B29B9/06
CPCC08L23/0853C08L2201/02C08L2201/08C08L2201/22C08L2203/202C08L2205/035C08L2207/064C08L2312/06H01B3/441H01B7/295C08L23/06C08L53/025C08L51/06C08K13/02C08K2003/2224C08K5/34928C08K3/2279
Inventor 梁家荣翁文彪施冬梅
Owner 上海至正新材料有限公司