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A kind of flame retardant composite material and its preparation method and application

A technology of flame retardant composite materials and raw materials, applied in the field of functional materials, can solve the problems of ignition, general heat resistance temperature, and the flame retardancy and heat resistance of composite materials need to be improved.

Active Publication Date: 2021-10-26
SHENZHEN MPD HITECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the wire products used in the automotive field on the market are basically made of thermoplastic elastomers, such as thermoplastic elastomers (TPE), thermoplastic polyurethane elastomer rubber (TPU) and high-density polyethylene (HDPE), etc. The resistance of these materials Low thermal temperature and general flame retardant performance. Under high temperature conditions and when exposed to open flames, ignition, adhesion, aging, etc. will occur, and damaged wires need to be replaced frequently, which may even cause a fire in severe cases
[0003] SEBS is a linear three-block copolymer with polystyrene as the end segment and ethylene-butene copolymer obtained by hydrogenation of polybutadiene as the middle elastic block. It has good stability, aging resistance, high elasticity, etc. Advantages, but its flame retardancy is poor, and the heat resistance temperature is average. When it is used as a raw material for the production of wires, cables, sheathing materials, etc., it usually needs to be mixed with other reagents to improve its flame retardancy and heat resistance.
The patent application number 201610829537.8 discloses a high-performance flame-retardant composite material for wires, specifically using polyphenylene oxide (PPO), halogen-free flame retardants, and epoxy compound heat stabilizers to improve the flame retardancy of SEBS and heat resistance, but the flame retardancy and heat resistance of the composite still need to be improved

Method used

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  • A kind of flame retardant composite material and its preparation method and application
  • A kind of flame retardant composite material and its preparation method and application

Examples

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preparation example Construction

[0042] The present invention provides a method for preparing a flame retardant composite material described in the above technical solution, comprising the following steps:

[0043] After mixing SEBS, polyphenylene ether, polysiloxane, organic phosphate, epoxy oil, lubricant and anti-aging agent, extrusion granulation is carried out to obtain a flame-retardant composite material.

[0044] The present invention has no special limitation on the mixing method of SEBS, polyphenylene ether, polysilaboroxane, organic phosphate, epoxy oil, silicone and anti-aging agent and the feeding order of each preparation raw material. The ingredients are mixed evenly. The present invention preferably mixes SEBS and PPO first, then adds epoxy oil for second mixing, then adds polysiloxane and organic phosphate for third mixing, and finally adds lubricant and anti-aging agent for fourth Mixing; in the present invention, the first mixing, the second mixing, the third mixing and the fourth mixing a...

Embodiment 1

[0050] Mix SEBS and PPO in a high-speed mixer (rotating speed is 2000r / min) for 2min, then add epoxy oil and mix for 2min, then add polysiloxane and polyphosphate and mix for 2min, finally add silicone and anti-aging agent ( Specifically, it is a mixture of anti-aging agent 1010 and anti-aging agent 619, the mass ratio of anti-aging agent 1010 and anti-aging agent 619 is 3:2) mixed for 2 minutes to obtain a mixed material;

[0051] Put the mixed material in a twin-screw extruder for extrusion and granulation to obtain a flame-retardant composite material; wherein, the aspect ratio of the twin-screw extruder is 48:1, and the feeding speed is controlled at 35- 50r / min, the speed of the main screw is controlled at 400-600r / min, and the temperature of extrusion granulation is controlled at 230-270°C.

[0052] The amount of each preparation raw material in this embodiment is listed in Table 1.

Embodiment 2～4

[0054] The flame-retardant composite material was prepared according to the method of Example 1, wherein the amounts of each preparation raw material are listed in Table 1.

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Abstract

The invention relates to the technical field of functional materials, in particular to a flame-retardant composite material and its preparation method and application. The flame-retardant composite material provided by the present invention comprises the following preparation raw materials in parts by mass: 63-68 parts of SEBS; 18-28 parts of polyphenylene ether; 5-8 parts of polysiloxane; 2-5 parts of organic phosphate 2-4 parts of epoxidized oil; 0.8-1.2 parts of lubricant; 0.2-0.8 parts of anti-aging agent. The invention uses SEBS as a base material, and uses polysiloxane, organic phosphate and epoxidized oil in combination, which can effectively improve the flame retardancy and heat resistance of the flame-retardant composite material. The experimental results of the examples show that the heat distortion temperature of the flame-retardant composite material provided by the present invention can reach 120°C, the flame-retardant performance is V0, and the impact strength is 35kJ / m 2 .

Description

technical field [0001] The invention relates to the technical field of functional materials, in particular to a flame-retardant composite material and its preparation method and application. Background technique [0002] At present, the wire products used in the automotive field on the market are basically made of thermoplastic elastomers, such as thermoplastic elastomers (TPE), thermoplastic polyurethane elastomer rubber (TPU) and high-density polyethylene (HDPE), etc. The resistance of these materials The heat temperature is low, and the flame retardant performance is average. Under high temperature conditions and when encountering an open flame, there will be ignition, adhesion, aging and other phenomena, which require frequent replacement of damaged wires, and even cause fires in severe cases. [0003] SEBS is a linear three-block copolymer with polystyrene as the end segment and ethylene-butene copolymer obtained by hydrogenation of polybutadiene as the middle elastic b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L53/02C08L71/12C08L83/14C08L91/00C08L85/02
CPCC08L53/025C08L2201/02C08L2201/08C08L2205/035C08L71/12C08L83/14C08L91/00C08L85/02
Inventor 任景耀武京湘陈向文任美伦李佳梦
Owner SHENZHEN MPD HITECH CO LTD