Weatherproof low-smoke zero-halogen polyolefin sheath material for extra-high-tension cable and preparation method of weatherproof low-smoke zero-halogen polyolefin sheath material

A polyolefin sheath, ultra-high voltage technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of harmfulness to the human body, low smoke transmission rate, blocking the escape line of sight, etc.

Inactive Publication Date: 2017-02-01
ORIGIANL DOW ADVANCED COMPOUNDS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the ultra-high voltage cables in the industry (CN103788529, CN104231482) are still using PVC or chlorinated polyethylene (CPE) as the sheath material. At the same time, the transmission rate of smoke is very low, which is harmful to the human body and blocks the escape line of sight

Method used

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  • Weatherproof low-smoke zero-halogen polyolefin sheath material for extra-high-tension cable and preparation method of weatherproof low-smoke zero-halogen polyolefin sheath material
  • Weatherproof low-smoke zero-halogen polyolefin sheath material for extra-high-tension cable and preparation method of weatherproof low-smoke zero-halogen polyolefin sheath material
  • Weatherproof low-smoke zero-halogen polyolefin sheath material for extra-high-tension cable and preparation method of weatherproof low-smoke zero-halogen polyolefin sheath material

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Experimental program
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Effect test

Embodiment 1-7

[0083] Preparation of sheathing material

[0084] According to the ratio in Table 1, the raw material components were weighed respectively, placed in a high-speed mixer and mixed for 4-8 minutes, and then the mixture was plasticized and kneaded in the twin-screw, and then entered into the single-screw extruder for granulation; the processing temperature of the twin-screw For: conveying section 125-135°C, melting section 125-135°C, mixing section 135-145°C, exhaust section 130-145°C, homogenizing section 145-155°C, head 150-160°C; single screw temperature It is: 140-150°C in the first zone, 140-155°C in the second zone, 150-160°C in the third zone, 155-165°C in the machine head, diced and air-cooled and packaged, and the experiment number is 1#-7# Sheath material.

[0085] Table 1

[0086]

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Abstract

The invention relates to a weatherproof low-smoke zero-halogen polyolefin sheath material for an extra-high-tension cable. The weatherproof low-smoke zero-halogen polyolefin sheath material is prepared from, by weight, 40-60 parts of ethylene-octene block copolymer (OBC), 10-20 parts of ethylene-acrylate copolymer (ACM), 20-40 parts of ethylene-vinyl acetate copolymer (EVA), 5-10 parts of methyl vinyl silicone rubber, 2-15 parts of compatilizer, 50-120 parts of fire retardant, 0.8-2 parts of antioxygen and 0.5-1.5 parts of coupling agent.

Description

technical field [0001] The invention relates to a weather-resistant low-smoke and halogen-free polyolefin sheath material for ultra-high-voltage cables and a preparation method thereof, in particular to an ultra-high-voltage cable that is suitable for use in extreme climate areas, has excellent cold resistance, high temperature resistance, and weather-resistant low-smoke and halogen-free Flame retardant sheathing material. Background technique [0002] At present, it has become a broad consensus of all parties in our country to speed up the construction of ultra-high voltage power grid and promote the sustainable development of economy, society and environment. Both energy export and import areas are urgently required to speed up the construction of UHV power grids. [0003] With the emergence of the comprehensive benefits of UHV, and the urgent need to solve the haze problem and prevent air pollution, the development of UHV power grids has become one of the strategic prior...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K13/02C08K3/22C08K5/134C08K5/526H01B7/18H01B7/28H01B7/29H01B7/295
CPCY02A30/14C08L23/0815C08L23/0853C08L2201/02C08L2201/22C08L2203/202C08L2205/02C08L2205/025C08L2205/035H01B7/18H01B7/28H01B7/29H01B7/295C08L23/0869C08K13/02C08K2003/2224C08K2003/2227C08K5/1345C08K5/526
Inventor 蔡荷菲宋刚翁文彪侯海良
Owner ORIGIANL DOW ADVANCED COMPOUNDS SHANGHAI
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