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Preparation method of halogen-free flame-retarding high-elastic polyolefin cable material used for new energy vehicle

A technology for polyolefin cable materials and new energy vehicles. It is applied in the field of flame retardant materials. It can solve the problems of low temperature resistance of cable materials, large cable bending radius, and poor heat resistance of materials, so as to increase the heat resistance temperature and improve flame retardancy. The effect of improving the mechanical properties

Inactive Publication Date: 2018-05-15
SUZHOU CPLUS NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the temperature resistance level of the cable material made is generally relatively low. The cable made of it is used in the car for a long time, and it is prone to cracking, and the overall material is hard, resulting in a large bending radius of the cable, and it is very difficult to wire in a small area. Poor heat resistance, after long-term exposure to high temperature, it is easy to cause accelerated aging of the material and shorten the service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation process for a halogen-free flame-retardant high-elastic polyolefin cable material for new energy vehicles, comprising the following steps:

[0022] Step 1: 15 parts of EVM (ethylene vinyl acetate rubber), 13 parts of POP (vinyl polymer grafted polyether polyol), 15 parts of EPDM rubber, and 8 parts of POE grafted maleic acid glycerin compatibilizer, first Use a twin-screw extruder to pre-mix and modify, and then granulate to become a mixture for later use. The total fraction: 51 parts, and the twin-screw speed is about 350 rpm;

[0023] Step 2: Pour 40 parts of the hydromagnesite powder into the high-mixer, and add a surface treatment agent with a content of 2% of the hydromagnesite powder for mixing, and mix at a speed of 800 to 1200 rpm;

[0024] Step 3: Pour the particles mixed in Step 1, the powder in Step 2, 8 parts of zinc borate, 0.5 parts of antioxidant, and 0.5 parts of crosslinking agent into a high-speed mixer, and perform high-speed mixing at a...

Embodiment 2

[0030] A preparation process for a halogen-free flame-retardant high-elastic polyolefin cable material for new energy vehicles, comprising the following steps:

[0031] Step 1: Premix and modify 20 parts of EVM, 20 parts of POP, 10 parts of EPDM rubber, and 5 parts of POE grafted maleic acid compatibilizer with a twin-screw extruder, and then granulate into a mixture Standby, total score: 55 parts, twin-screw speed is about 350 rpm;

[0032] Step 2: Pour 35 parts of the hydromagnesite powder into the high mixer, and add a surface treatment agent with a content of 2% of the hydromagnesite powder for mixing, and mix at a speed of 800 to 1200 rpm;

[0033] Step 3: Pour the particles mixed in step 1, the powder in step 2, 7 parts of zinc borate, 1.5 parts of antioxidant, and 1.5 parts of crosslinking agent into the high-speed mixer, and perform high-speed mixing at a speed of 1000 to 1500 rpm;

[0034] Step 4: Pour the semi-finished product mixed in step 3 into the internal mixer...

Embodiment 3

[0039] A preparation process for a halogen-free flame-retardant high-elastic polyolefin cable material for new energy vehicles, comprising the following steps:

[0040] Step 1: Premix and modify 30 parts of EVM, 10 parts of POP, 15 parts of EPDM rubber, and 8 parts of POE grafted maleic acid compatibilizer with a twin-screw extruder, and then granulate into a mixture Standby, total score: 53 parts, twin-screw speed is about 350 rpm;

[0041] Step 2: Pour 30 parts of the hydromagnesite powder into the high mixer, and add a surface treatment agent with a content of 2% of the hydromagnesite powder for mixing, and mix at a speed of 800 to 1200 rpm;

[0042] Step 3: Pour the particles mixed in Step 1, the powder in Step 2, 5 parts of zinc borate, 1 part of antioxidant, and 1 part of crosslinking agent into the high-speed mixer, and perform high-speed mixing at a speed of 1000 to 1500 rpm;

[0043] Step 4: Pour the semi-finished product mixed in step 3 into the internal mixer accor...

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Abstract

The invention provides a preparation method of a halogen-free flame-retarding high-elastic polyolefin cable material used for a new energy vehicle. The preparation method includes steps of: 1) performing premix modification to EVM, POP and a compatibilizer, and granulating the mixture for later use; 2) adding a surfactant to hydromagnesite powder, mixing the components, and performing high-speed mixing to the mixed granules, the powder, zinc borate, an antioxidant and a crosslinking agent; 3) performing high temperature fusion to the mixed semi-product according to formula, and when the materials are completed fused into agglomerate, performing further mixing and dispersion; 4) discharging the material, and granulating the re-mixed material; 5) shaping and granulating the material, and cutting the granules through a honeycomb plate at the front end of a single-screw extruder; 6) enabling the granules to flow through a pipeline and then cooling and screening the granules to select the granules being 3-5 mm long as a qualified product, and packaging the qualified product. The material is increased in heat resistant temperature and is reduced in permanent deformation, is increased intensile strength and yield strength, and is greatly improved in flame retarding effect.

Description

technical field [0001] The invention relates to the field of flame retardant materials, in particular to a preparation process of a halogen-free flame retardant highly elastic polyolefin cable material for new energy vehicles. Background technique [0002] Halogen-free flame-retardant polyolefin cable compound is a kind of cable compound that meets the RoHS directive and Reach regulations. It uses polyolefin as the base material, adds flame retardants, antioxidants, modifiers and other additives, and is mixed and plasticized to granulate made. The temperature resistance grade is 90°C. Widely used in power cables, communication cables, control cables, optical cables, subway cable insulation or sheathing, electronic wires, automotive wires, etc., especially in the field of new energy vehicles. [0003] Generally, the proportion of flame retardant or filler in low-smoke, halogen-free flame-retardant polyolefin cable compound is relatively high, and the relative content of PE ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L51/08C08L23/16C08L51/06C08K13/06C08K9/06C08K3/26C08K3/22C08K3/38B29C47/92B29C48/92
Inventor 李东琦王相波邵小彦
Owner SUZHOU CPLUS NEW MATERIAL
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