Non-crosslinked polypropylene material and cable

Abstract

The invention discloses a non-crosslinked polypropylene material and a cable, and belongs to the technical field of cables, and the non-crosslinked polypropylene material comprises the following raw materials by weight: 20-30 parts of isotactic polypropylene, 40-50 parts of syndiotactic polypropylene, 5-10 parts of low density polyethylene, 1-5 parts of talcum powder, 3-6 parts of nanoparticles, 0.5-1 part of tetra (2, 4-di-tert-butylphenyl-4, 4-biphenyl) bisphosphonate, 0.5-1 part of tris- (3, 5-di-tert-butyl-4-hydroxyphenyl) isocyanurate and 0.5-2 parts of 2, 2-oxamido bis-[ethyl-3-(3, 5-di-tert-butyl-4-hydroxyphenyl) ] propionate. The cable material still has ultrahigh flexibility and toughness at the temperature of -30 DEG C and lower, therefore, the cold resistance, weather resistance and low-temperature impact resistance of the cable material are improved, the application range is wide, the practicability is high, and the oxidation resistance of the cable material is improved by using multiple antioxidants.

Description

【Technical field】 [0001] The invention relates to the technical field of cables, in particular to non-crosslinked polypropylene materials and cables. 【Background technique】 [0002] At present, the most commonly used insulation material for plastic cables is cross-linked polyethylene, which not only maintains the good electrical insulation properties of polyethylene, but also has excellent mechanical properties at high temperatures. However, the chemical cross-linking process makes the polyethylene lose its thermoplastic properties, making it difficult to recycle the cable after its lifetime. In addition, polyethylene needs to be treated with high temperature and high pressure during the crosslinking process, and the by-products such as methane, cumyl alcohol, acetophenone and water and other low-boiling small molecular substances will also have a lasting impact on the insulation performance of cables. These defects will inevitably produce a large amount of energy, resource...

AI Technical Summary

Problems solved by technology

In the research of environmentally friendly non-crosslinked cable insulation materials, polypropylene materials with high melting point and excellent electrical insulation properties are gradually favored by the cable industry, but there are still many problems when polypropylene materials are used as non-crosslinked polypropylene materials. Disadvantages, such as poor cold resistance, low impact strength at low temperature, brittleness, easy to burn in case of fire, easy to age under the action of light, heat and oxygen, poor toughness, high degree of static electricity, etc. When combined with polypropylene materials, the environment is limited

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