Irradiation cross-linking low-smoke zero-halogen high flame-retarding polyolefin insulation material and preparing method thereof

Abstract

Provided are an irradiation cross-linking low-smoke zero-halogen high flame-retarding polyolefin insulation material and a preparing method thereof. The insulation material is mainly composed of the following components by weight: 40-50 parts of ethylene copolymer resin, 40-50 parts of polyolefin elastomer resin, 10-20 parts of compatilizers, 200-250 parts of hydroxide fire retardants, 0.5-1.0 part of main antioxidants, 0.3-0.5 part of auxiliary antioxidants, 1.5-2.0 parts of cross-linking agents and 3-5 parts of lubricants. The preparing method includes: metering all the raw materials in the raw material formula according to weight parts, sending all the raw materials into a kneading machine to be mixed even, sending the even materials into a single screw extruder for extrusion granulation, sieving the materials in a vibration screen and finally cooling and packing the materials. The irradiation cross-linking low-smoke zero-halogen high flame-retarding polyolefin insulation material and the preparing method thereof completely meet requirements of the standard. The ethylene copolymer resin is adopted as the basic raw material, the polyolefin elastomer resin, the compatilizers, the hydroxide fire retardants and the cross-linking agents are added for blending, and therefore the irradiation cross-linking low-smoke zero-halogen high flame-retarding polyolefin insulation material is prepared.

Description

1. Technical Field [0001] The invention relates to a wire and cable material and a preparation method thereof, in particular to an irradiation cross-linked low-smoke halogen-free high flame-retardant polyolefin insulating material for power cords and a preparation method thereof. 2. Background technology [0002] In the past, flame-retardant PVC materials were generally used for power cords, but with the introduction of the EU ROHS and REACH environmental protection regulations and the needs of public safety, wires and cables used in public places are required to be flame-retardant and environmentally friendly, and no poisonous gas can be released during the combustion process. And corrosive gas, and has low smoke generation, radiation cross-linked low-smoke halogen-free flame-retardant polyolefin material has become the inevitable first choice. [0003] At present, radiation-crosslinked low-smoke halogen-free flame-retardant polyolefin insulating materials generally have the follo...

AI Technical Summary

Problems solved by technology

[0003] At present, irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin insulation materials generally have the following shortcomings: too hard, poor processing performance, and difficult to pass the UL1581 standard VW-1 requirements for combustion performance

Images