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Halogen free releasable semiconductive insulation shielding material and production method thereof

An insulating shielding and peeling type technology, applied in the production field of halogen-free peelable semiconducting insulating shielding material, can solve the problems of reducing the dielectric properties of the insulating layer, corroding conductor vulcanized pipes and facilities, etc., to improve electrical performance and The effect of safety, good product stability and simple production process

Inactive Publication Date: 2012-08-15
镇国广 +1
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Problems solved by technology

Because halogen-containing polymers are easily decomposed to produce hydrogen chloride during vulcanization, which reacts with water to form hydrochloric acid, thereby reducing the dielectric properties of the insulating layer and corroding conductors, vulcanized pipes and facilities. Insulation and shielding materials cannot well meet the market demand for medium and high voltage power cables

Method used

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  • Halogen free releasable semiconductive insulation shielding material and production method thereof

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Embodiment Construction

[0011] 1. Raw material preparation:

[0012] The following table is the weighing table of an embodiment:

[0013]

[0014] Wherein, the anti-aging agent is obtained by comprehensive reaction of phenylenediamines and polymethyl terephthalate calcium zinc salt as raw materials, wherein the weight ratio of phenylenediamine to polymethyl terephthalate calcium zinc salt is 2 to 3: 1.

[0015] 2. Production process:

[0016] Set the internal mixer at 90-100°C, knead the above raw materials for 8-10 minutes, then extrude through the open mixer and heat-cut into shapes. After air-drying, it can be packaged and sold.

[0017] 3. Product Features:

[0018] The product has been tested by the Machinery Industry Electrical Materials and Special Cable Products Quality Supervision and Inspection Center, and the performance of the product meets the requirements of "JB / T10738-2007 Semi-conductive Shielding Material for Extruded Insulated Cables with Rated Voltage 35KV and Below", "PYJBJ ...

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Abstract

The invention relates to a halogen free releasable semiconductive insulation shielding material and a production method of the halogen free releasable semiconductive insulation shielding material, which belongs to the technical field of cable material production. The production method provided by the invention comprises the fowling steps: setting an internal mixer at the temperature range of 90-100DEG C; mixing EVA (ethylene-vinyl acetate copolymer), EPDM (ethylene-propylene-diene monomer), coupling agent-propyl trimethoxy silane, microstalline wax, glycol dimethacrylate, antioxidant, carbon black and copper inhibitor in the internal mixer for 8-10min; molding through hot cutting after extrusion by a mixing mill; and finally drying by air. According to the invention, the production process is simple and reasonable, the production and control is convenient, and the product stability is good; and the production method provided by the invention are suitable for insulating layer shielding materials produced at medium-high voltage power cable (6KV or above) and can improve electrical performance and safety of the cable in long-time running.

Description

technical field [0001] The invention relates to the technical field of cable raw material production, in particular to a production method of a halogen-free strippable semi-conductive insulating shielding material. Background technique [0002] In previous studies, most of the halogen-containing polymers such as neoprene, chlorosulfonated polyethylene or chlorinated polyethylene were used to improve the conductivity of the shielding material. Because halogen-containing polymers are easily decomposed to produce hydrogen chloride during vulcanization, which reacts with water to form hydrochloric acid, thereby reducing the dielectric properties of the insulating layer and corroding conductors, vulcanized pipes and facilities. Insulation and shielding materials cannot well meet the market demand for medium and high voltage power cables. Contents of the invention [0003] The purpose of the invention is to prepare a halogen-free strippable semi-conductive insulating shielding ...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/16C08K13/02C08K5/5419C08K5/103C08K3/04H01B3/44
Inventor 镇国广王康芹
Owner 镇国广
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