Preparation process for highly-flame-retardant, irradiation-crosslinked, low-fume and low-halogen polyolefin material

A preparation process and high flame-retardant technology, which is applied in the field of flame-retardant materials, can solve the problems of high flame-retardant materials that cannot be met, limited flame-retardant performance, and low flame-retardant requirements, so as to avoid rapid degradation, reduce smoke generation, Excellent flame retardant effect

Inactive Publication Date: 2018-07-06
SUZHOU CPLUS NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] General radiation cross-linked low-smoke low-halogen flame-retardant polyolefin cable materials do not have high requirements for flame retardancy, the proportion of polyolefin resin is high, and the flame-retardant system is relatively small to ensure mechanical and physical

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation process of a highly flame-retardant irradiation cross-linked low-smoke and low-halogen polyolefin material, comprising the following steps:

[0024] Step 1: 20 parts of EEA (ethylene-ethyl acrylate copolymer), 5 parts of PE (polyethylene), 10 parts of POP (vinyl polymer grafted polyether polyol), 5 parts of compatibilizer, first use double The screw extruder is pre-mixed and modified, and then granulated into a mixture for later use, the total fraction: 40 parts, and the twin-screw speed is about 350 rpm;

[0025] Step 2: Pour 20 parts of hydromagnesite powder into the high mixer, and add 2% surface treatment agent of hydromagnesite powder for mixing, and mix at a speed of 800-1200 rpm; the surface treatment agent is diethyl Silane, aminosilane, or a mixture of diethylsilane and aminosilane;

[0026] Step 3: Mix the particles in step 1, the powder in step 2, 20 parts of halogen flame retardant, 5 parts of antimony trioxide, 10 parts of zinc borate, 2 part...

Embodiment 2

[0032] A preparation process of a highly flame-retardant irradiation cross-linked low-smoke and low-halogen polyolefin material, comprising the following steps:

[0033] Step 1: 22 parts of EEA, 8 parts of PE, 8 parts of POP, and 4 parts of compatibilizer are premixed and modified with a twin-screw extruder, and then granulated into a mixture for later use. The total fraction: 42 parts, double The screw speed is about 350 rpm;

[0034] Step 2: Pour 20 parts of hydromagnesite powder into the high mixer, and add 2% surface treatment agent of hydromagnesite powder for mixing, and mix at a speed of 800-1200 rpm; the surface treatment agent is diethyl Silane, aminosilane, or a mixture of diethylsilane and aminosilane;

[0035] Step 3: Mix the particles in step 1, the powder in step 2, 25 parts of halogen flame retardant, 5 parts of antimony trioxide, 5 parts of zinc borate, 1 part of lubricant, 1.5 parts of antioxidant, Pour 0.5 parts of the linking agent into the high-speed mixe...

Embodiment 3

[0041] A preparation process of a highly flame-retardant irradiation cross-linked low-smoke and low-halogen polyolefin material, comprising the following steps:

[0042] Step 1: 25 parts of EEA, 5 parts of PE, 5 parts of POP, and 3 parts of compatibilizer are premixed and modified with a twin-screw extruder, and then granulated into a mixture for later use. The total fraction: 43 parts, double The screw speed is about 350 rpm;

[0043] Step 2: Pour 22 parts of hydromagnesite powder into the high-mixer, and add 2% surface treatment agent of hydromagnesite powder for mixing, and mix at a speed of 800-1200 rpm; the surface treatment agent is diethyl Silane, aminosilane, or a mixture of diethylsilane and aminosilane;

[0044] Step 3: Mix the particles in step 1, the powder in step 2, 20 parts of halogen flame retardant, 10 parts of antimony trioxide, 7 parts of zinc borate, 1.25 parts of lubricant, 1 part of antioxidant, Pour 0.75 parts of the linking agent into the high-speed m...

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Abstract

The invention provides a preparation process for a highly-flame-retardant, irradiation-crosslinked, low-fume and low-halogen polyolefin material. The preparation process comprises the following steps:subjecting EEA, PE, POP and a compatibilizing agent to premixing and modifying, and carrying out granulating for subsequent usage; adding hydromagnesite powder into a surfactant, carrying out mixing,and subjecting mixed particles, powder, a halogen-based flame retardant, antimonous oxide, zinc borate, a lubricant, an antioxidant and a crosslinking agent to mixing at a high speed; subjecting a mixed semi-finished product to high-temperature melting in a formula proportion, after the material is completely molten into a material lump, carrying out further mixing and dispersing, then carrying out discharging, and subjecting a remixed material to granulating; after completion of molding and granulating, allowing the material to pass through a honeycomb plate located at the front end of a single screw, and carrying out granulating; and after the material is granulated, carrying out cooling and sieving through a pipeline, selecting particles with a length of 3 to 5 mm as qualified products, and carrying out packaging. According to the invention, through combination of a plurality of flame retardants, excellent flame retardancy is achieved; meanwhile, compared with a PVC material, the material provided by the invention is greatly reduced in the amount of fuming, and has the advantages of low fume density and excellent and stable physical properties.

Description

technical field [0001] The invention relates to the field of flame retardant materials, in particular to a preparation process of high flame retardant irradiation crosslinked low-smoke and low-halogen polyolefin materials. Background technique [0002] Irradiation cross-linked low-smoke and low-halogen flame-retardant polyolefin cable material is an environmentally friendly flame-retardant material added with hydroxide and a small amount of environmentally friendly halogen-based flame retardants. It absorbs heat by dehydration and isolates carbon to achieve flame retardancy effect. Irradiation cross-linked low-smoke, low-halogen flame-retardant polyolefin cable material, the mechanical properties meet the requirements of XLPE outer coating materials in the standards of electronic wires and automobile wires, and the flame retardancy has passed the UL1581VW-1 grade. There are different requirements in different industries and different geographical locations, and some have ve...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08L51/08C08K13/06C08K9/06C08K3/26C08K3/22C08K3/38C08K5/06
CPCC08K2003/267C08K2003/387C08L23/0869C08L2201/02C08L2205/02C08L2205/035C08L2312/06C08L23/06C08L51/08C08K13/06C08K9/06C08K3/26C08K3/2279C08K3/38C08K5/06
Inventor 王相波李东琦邵小彦
Owner SUZHOU CPLUS NEW MATERIAL
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