Polyethylene sheath material with high flame resistance at 90 DEG C

Abstract

The invention relates to a polyethylene sheath material with high flame resistance at 90 DEG C, belonging to the technical field of high molecular materials. The polyethylene sheath material is characterized by being prepared from the following substances in parts by weight: 100 parts of polyvinyl chloride (PVC) resin, 20-30 parts of dioctyl phthalate (DOP), 25-35 parts of plasticizer A, 20-30 parts of filler, 8-10 parts of stabilizer, 0.5-2 parts of lubricant, 10-20 parts of flame retardant and 2-3 parts of ageing resistant. The invention has scientific formula and good service performance. The product has the comprehensive performance of excellent thermal resistance, mechanical strength, stress cracking resistance, flame resistance, thermal deformation resistance, pressure resistance and the like, is environment-friendly and pollution-free, and protects the body health of the production staff; and the service life of the product is prolonged.

Description

technical field [0001] The invention relates to plastics used for wires and cables, and belongs to the technical field of polymer materials. Background technique [0002] Soft polyvinyl chloride plastics for wire and cable, as a large category of soft polyvinyl chloride products, have been mass-produced, but with the rapid development of the wire and cable industry, the conditions for the use of cable material products are getting higher and higher. With the development of social economy, good heat resistance grade, excellent product flame retardant and anti-aging performance, excellent electrical insulation performance, and high withstand voltage grade improve the adaptability of cables to the environment and broaden the application range of products , Increase the survivability of the cable to the harsh environment, prolong the service life of the cable, and improve the intensification of the product. Especially in ships, aviation and other work, due to its particularity,...

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Problems solved by technology

The demand for high oxygen index flame retardant cable materials is increasing. This variety has already come out abroad. Some domestic manufacturers and research institutes are discussing this product. However, due to poor aging performance, flame retardancy and process performance Stable, especially the appearance of the cable is dull, and there are particles that are difficult to plasticize, so the quality of the product is not good enough. At present, it mainly relies on imports to meet the needs of cable factories. In view of this situation, it is also based on the development of national industry and market demand. Considering that it is particularly urgent and important to develop a 90°C high flame-retardant polyethylene sheath material

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