Thermal resistant degradable insulating material for wire cables

Abstract

The invention discloses a thermal resistant degradable insulating material for wire cables. The thermal resistant degradable insulating material consists of the following components in parts by weight: 65-85 parts of L-polylactic acid, 20-30 parts of D-polylactic acid, 15-25 parts of isosorbide diester, 5-10 parts of bis(2-(2-butoxyethoxy)ethyl)adipate, 1-2 parts of N-salicyloyl amino phthalimide, 0.02-0.05 part of N-N'-di[beta(3,5-ditertiary butyl-4-hydroxyphenyl) propionyl] hydrazine, 2-5 parts of carbodiimide, 0.1-0.8 part of isocyanate, 30-50 parts of a flame retardant, 5-8 parts of triallyl tri cyanuric acid ester, 1-3 parts of trimethyl allyl isocyanate and 2-20 parts of packing, wherein the weight-average molecular weight of the L-polylactic acid and the cyanuric acid ester is 100,000 to 400,000. The thermal resistant degradable insulating material for wire cables, which is disclosed by the invention, is good in thermal resistance, durability and degradability and stable in use process, has properties of thermal resistance, duability and scratch resistance and meanwhile has a natural antibacterial property, original properties can be maintained within a relatively long time, and the durability can be improved.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a heat-resistant degradable insulating material for wires and cables. Background technique [0002] In the known wire or cable insulation or sheath materials, non-degradable petroleum resources such as polyolefin or polyvinyl chloride are generally used as insulators, which have excellent performance and long service life. However, due to its structural characteristics and other reasons, it cannot be degraded basically or it takes hundreds of years to decompose. Severe environmental impact if discarded - if incinerated it will produce large amounts of CO 2 Even toxic and harmful gases endanger environmental safety; landfills occupy land resources, and there is a huge environmental risk of organic matter precipitation in the soil; even recycling can only recover some bulky, easy-to-recycle, unaged and cross-linked materials, most of which are Wires and cables cannot be r...

AI Technical Summary

Problems solved by technology

[0006] Chinese Patent Publication No. CN 101423654 discloses a plastic insulation and sheath material for degradable cables and cables. The patent manufactures cables by blending polylactic acid with reinforcing agents, inorganic flame retardants, antioxidants, and copper inhibitors. With insulating materials and sheath materials, the material is filled with a large amount of inorganic flame retardants and fillers without toughening modification, and its mechanical properties are extremely poor. It is still a hard and brittle material with poor formability and no Practical value described in the patent

[0007] Chinese Patent Publication No. CN 104356620A discloses a degradable electrical insulation material, which is prepared by blending polylactic acid with bacterial cellulose, cross-linked polyethylene, polycarbonate, ethylene-propylene rubber, glass fiber, etc. However, the compatibility between polylactic acid and cross-linked polyethylene, polycarbonate, and ethylene-propylene rubber is poor, and the mechanical properties are not good. The development trend of halogen-free flame retardant

Images