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Automatic micro-crosslinking halogen-free flame-retardant thermoplastic elastomer and preparation method thereof

A thermoplastic elastomer and thermoplastic elastic technology, applied in the field of thermoplastic elastomer, can solve the problem of softness, weather resistance, oil resistance, low temperature resistance, substrate degradation, thermoplastic elastomer materials cannot be recycled and reused, and affect material mechanics and physics. and processing performance to achieve the effect of improving dispersion, improving mechanical properties and reducing production costs

Pending Publication Date: 2022-06-28
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of a large amount of inorganic flame retardant fillers will seriously affect the mechanical, physical and processing properties of the material, resulting in significantly worse softness, weather resistance, oil resistance, and low temperature resistance at room temperature compared with the base material. In addition, the subsequent crosslinking process It greatly increases the difficulty of the process, and at the same time causes environmental hazards such as the inability of the thermoplastic elastomer material to be recycled and reused after its service

Method used

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  • Automatic micro-crosslinking halogen-free flame-retardant thermoplastic elastomer and preparation method thereof

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Experimental program
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Effect test

specific Embodiment 1

[0020] The raw material ratio is: 100 parts of thermoplastic elastomer main base material, 10 parts of reinforcing resin, 30 parts of low molecular weight polyolefin, 1 part of silane grafted polyolefin, 30 parts of oil agent, 300 parts of inorganic flame retardant filler, water production component 10 servings. The thermoplastic elastomer main substrate is SEPS (YH series); the reinforcing resin is PP (melting index 1-5); the silane-grafted polyolefin is silane-grafted polyethylene; the oil agent is dodecylbenzene; The olefin is low molecular weight PP; the inorganic flame retardant filler is a compound of magnesium hydroxide with a particle size of about 500nm and an aluminum hydroxide inorganic filler with a particle size of about 5μm, and the ratio of the two is 1:3. The component is adipic acid.

[0021] Preparation:

[0022] (1) Mix the inorganic flame retardant filler and the water-producing component according to the metering ratio under the condition of 10 RMP at 20...

specific Embodiment 2

[0024] The ratio of raw materials is: 100 parts of thermoplastic elastomer main substrate, 30 parts of reinforcing resin, 10 parts of low molecular weight polyolefin, 20 parts of silane grafted polyolefin, 10 parts of oil, 200 parts of inorganic flame retardant filler, and water production components 1 serving. The thermoplastic elastomer main substrate is SEBS; the reinforcing resin is PS; the silane-grafted polyolefin is silane-grafted polypropylene; the oil agent is naphthenic oil; the low molecular weight polyolefin is PP wax; the inorganic flame retardant filler is about 1 μm Magnesium hydroxide and aluminum hydroxide inorganic filler with a particle size of about 10 μm are compounded, the ratio of the two is 1:4, and the water production component is stearic acid.

[0025] Preparation:

[0026] (1) Mix the inorganic flame retardant filler and the water-producing component according to the metering ratio under the condition of 200 RMP at 60 °C and normal temperature for ...

specific Embodiment 3

[0028] The proportion of raw materials is: 100 parts of thermoplastic elastomer main substrate, 20 parts of reinforcing resin, 20 parts of low molecular weight polyolefin, 10 parts of silane grafted polyolefin, 20 parts of oil agent, 250 parts of inorganic flame retardant filler, water production component 5 servings. The thermoplastic elastomer main substrate is SEBS and SEPS (YH series), the mass ratio of the two is 1:1; the reinforced resin is HDPE; the silane-grafted polyolefin is silane-grafted polyethylene; the oil agent is white oil; low molecular weight The polyolefin is PE; the inorganic flame retardant filler is a compound of magnesium hydroxide with a particle size of about 2 μm and an inorganic filler of aluminum hydroxide with a particle size of about 20 μm, and the ratio of the two is 1:5; the water-producing component is palm acid.

[0029] Preparation:

[0030] (1) Mix the inorganic flame retardant filler and the water-producing component according to the met...

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Abstract

The invention discloses an automatic micro-crosslinking halogen-free flame-retardant thermoplastic elastomer and a preparation method thereof. The automatic micro-crosslinking halogen-free flame-retardant thermoplastic elastomer comprises a thermoplastic elastomer main base material, reinforced resin, low-molecular-weight polyolefin, silane grafted polyolefin, an oiling agent, an inorganic flame-retardant filler and a water producing component, the inorganic flame-retardant filler reacts with the water-producing component to generate water molecules in situ, and the water molecules are supplied to silane grafted polyolefin for hydrolysis crosslinking to realize automatic micro-crosslinking; the acidity of the water producing component can control the rate of generating water molecules to realize the regulation and control of the micro-crosslinking rate; the ratio of the inorganic flame-retardant filler to the silane grafted polyolefin can control the micro-crosslinking degree and the flame-retardant property; carboxyl of the water producing component and metal ions form coordination ionic bonds, so that interface matching between the filler and a base material is improved, and the dispersity of the filler is improved; and the water producing component is one or a mixture of more than 6 carbon atoms of long-chain fatty acid, long-chain fatty diacid and polycarboxylic acid. The production cost can be remarkably reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of thermoplastic elastomers, in particular to an automatic micro-crosslinking halogen-free flame-retardant thermoplastic elastomer and a preparation method thereof. Background technique [0002] Thermoplastic elastomer not only has the excellent properties of high elasticity, aging resistance and oil resistance of traditional cross-linked vulcanized rubber, but also has the characteristics of convenient processing and rich processing methods of ordinary plastics. It has important applications in wire and cable, plastic sports venues and other fields. . In recent years, the loss of people and property caused by the burning of common polymers in fires is shocking. How to reduce the incidence of fires and the death rate of fires has attracted much attention from the society; under such a social background, low smoke, halogen-free, Flame retardant has become the mainstream development direction of the thermopla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L23/12C08L23/26C08L23/06C08K3/22
CPCC08L53/025C08L2201/02C08L2201/22C08L2207/04C08K2003/2224C08K2003/2227C08L23/12C08L23/26C08K3/22C08L25/06C08L23/06
Inventor 曹怡晨黄玉安刘睿沐欣雨余保寅张奕磊韩冰高文通张波
Owner NANJING INST OF TECH
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