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Halogen-free composite flame retardant for thermoplastic elastomer and application thereof

A technology of thermoplastic elastomers and composite flame retardants, applied in the preparation of flame-retardant thermoplastic elastomers, in the field of halogen-free composite flame retardants for thermoplastic elastomers, can solve the problems of low flame retardant efficiency, large addition amount, and easy precipitation And other problems, to achieve good compatibility, good temperature resistance

Inactive Publication Date: 2018-01-19
ZHEJIANG TRANSFAR WHYYON CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention is a phosphorus-nitrogen composite flame retardant based on organic hypophosphite compounds, and aims to solve the defects of the current organic hypophosphite system, such as large amount of addition, low flame retardant efficiency, and easy precipitation.

Method used

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  • Halogen-free composite flame retardant for thermoplastic elastomer and application thereof
  • Halogen-free composite flame retardant for thermoplastic elastomer and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation of halogen-free composite flame retardant

[0029] 25 parts of aluminum diethylphosphinate, 5 parts of ammonium polyphosphate, 5 parts of H-beta molecular sieve, 30 parts of organically modified montmorillonite (magnesium-based montmorillonite), 35 parts of MCA.

[0030] Accurately weigh the above-mentioned components, and then fully mix the above-mentioned flame retardants by means of mechanical blending to obtain a halogen-free composite flame retardant.

[0031] (2) Application of composite flame retardant system in thermoplastic elastomer

[0032] a. Halogen-free flame retardant thermoplastic elastomer TPE system mixing

[0033] Add pre-weighed SEBS (25%) into the high-speed mixer, start stirring at a low speed, use a metering pump to inhale 18% white oil according to the proportion, mix thoroughly for 30 minutes, and keep the mixing temperature at 50°C to ensure that the white oil is fully absorbed by SEBS Absorb to complete the oil-filling proces...

Embodiment 2

[0040] The implementation process is the same as in Example 1, and the halogen-free composite flame retardant is as follows:

[0041] 23 parts of aluminum diethylphosphinate, 10 parts of zinc diethylphosphinate, 2 parts of ammonium polyphosphate, 5 parts of HZSM-5 modified molecular sieve, 20 parts of organically modified montmorillonite (calcium-based montmorillonite) , MCA40 copies.

[0042] The halogen-free composite flame retardant sample was treated by adding 2% of the total weight of the material to aluminum stearate for surface treatment, heated to 80°C, and stirred at high speed for 30 minutes to obtain a halogen-free composite flame retardant system. The proportions of each material and application results in the examples are shown in Table 1.

Embodiment 3

[0044] The implementation process is the same as in Example 1, and the halogen-free composite flame retardant is as follows:

[0045] 35 parts of aluminum diethylphosphinate, 1 part of ammonium polyphosphate, 2 parts of HZSM-5 modified molecular sieve, 27 parts of organically modified montmorillonite (magnesium-based montmorillonite), 35 parts of MPP.

[0046] Add 5% maleic anhydride graft compatibilizer POE to the halogen-free composite flame retardant sample for surface treatment, raise the temperature to 100°C, and stir at high speed for 30 minutes to obtain a halogen-free composite flame retardant system. The proportions of each material and application results in the examples are shown in Table 1.

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Abstract

The invention discloses a halogen-free composite flame retardant for a thermoplastic elastomer and application thereof. Present organic hypophosphite systems have excellent temperature resistance andprecipitation resistance, but have low synergistic efficiency with traditional polyhydroxy carbon-forming agents and have common flame-retarding effect. The halogen-free composite flame retardant of the invention is composed of, by weight, a) 20-40% of organic hypophosphite; b) 2-5% of polyphosphate, c) 1-5% of a PP catalytic carbon-forming agent, d) 20-35% of a nanometer inorganic filler, and e)20-35% of a nitrogen-containing compound. The halogen-free composite flame retardant can be applied as a flame retardant material of a thermoplastic elastomer, and has characteristics of high flame retardant efficiency, migration resistance, good compatibility and the like. A thermoplastic elastomer prepared by the utilization of the flame-retardant system can reach the standard of cable VW-1.

Description

technical field [0001] The invention relates to a composite flame retardant, in particular to a high-efficiency, migration-resistant halogen-free composite flame retardant for thermoplastic elastomers and its application in preparing flame-retardant thermoplastic elastomers. Background technique [0002] Thermoplastic elastomer TPE / TPR, also known as artificial rubber, not only has the excellent properties of high elasticity, aging resistance and oil resistance of traditional cross-linked rubber, but also has the characteristics of convenient processing and wide processing methods of ordinary plastics, effectively saving energy consumption , to reduce costs, is a technological revolution in the field of rubber. [0003] However, thermoplastic materials also have some shortcomings, the most deadly of which is flammability, which poses a great safety hazard to human life, especially when TPE is used in the wire and cable industry. In recent years, a large number of researcher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K13/04C08K5/5313C08K3/32C08K7/26C08K3/34C08K5/3492C08K13/06C08K9/04C08K9/06C08L53/02C08L91/06C08L23/12
Inventor 葛琴琴汪义钧童敏伟乔涛陈俊
Owner ZHEJIANG TRANSFAR WHYYON CHEM
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