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High-temperature-resistant high-moisture-resistant halogen-free flame-retardant polyester type polyurethane thermoplastic elastomer composition

A thermoplastic elastomer, flame retardant polyester technology, used in conductors, insulated conductors, electrical components and other directions, to improve high temperature and high humidity precipitation performance, good flame retardant performance

Active Publication Date: 2012-06-27
HANGZHOU JLS FLAME RETARDANTS CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The key technology of the present invention is to solve the problem of the precipitation of halogen-free flame-retardant polyester polyurethane elastomers in high-temperature and high-humidity environments, and maintain the flexibility and mechanical strength of the elastomers, comply with the RoHS directive, and meet the requirements of high-performance electronic and electrical materials. Requirements and development characteristics of halogen-free flame retardant

Method used

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  • High-temperature-resistant high-moisture-resistant halogen-free flame-retardant polyester type polyurethane thermoplastic elastomer composition
  • High-temperature-resistant high-moisture-resistant halogen-free flame-retardant polyester type polyurethane thermoplastic elastomer composition
  • High-temperature-resistant high-moisture-resistant halogen-free flame-retardant polyester type polyurethane thermoplastic elastomer composition

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The weight proportion of the flame-retardant polyester type thermoplastic polyurethane composition is as follows:

[0037] Aluminum Diethylphosphinate 20.0%,

[0038] Melamine Urocyanate 5.0%,

[0039] Viscosity modifier 8.0%,

[0040] Blend of antioxidants and UV absorbers 0.5%,

[0041] Polyester polyurethane elastomer (Shore A 85, tensile strength is about the balance.

[0042] 35MPa)

[0043] The viscosity regulator is an oil-extended styrene / conjugated diene copolymer, and the filling ratio of mineral oil processing oil is 100:100.

[0044] after mixing in On the twin-screw extruder, mix and granulate at a temperature range of 120-200°C to obtain a high-temperature, high-humidity, halogen-free, flame-retardant polyester polyurethane thermoplastic elastomer.

Embodiment 2～7

[0045] Embodiment 2~7: other composition and processing method are the same as embodiment 1.

[0046] serial number

Embodiment 8-9

[0047] Embodiment 8-9: other ingredients and processing method are the same as embodiment 1.

[0048]

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Abstract

The invention relates to a high-temperature-resistant high-moisture-resistant halogen-free flame-retardant polyester type polyurethane thermoplastic elastomer composition. The invention aims to solve the technical problem of precipitation of the halogen-free flame-retardant polyester type polyurethane elastomer in a high-temperature high-moisture environment, maintain the softness and mechanical strength of the elastomer and conform to the RoHS instruction, thereby satisfying the requirements for high-performance electronic / electric appliance materials and the development characteristics of no halogen and flame retardancy. The invention is characterized in that the high-temperature-resistant high-moisture-resistant halogen-free flame-retardant polyester type polyurethane thermoplastic elastomer composition is prepared from the following components in percentage by weight: 5.0-40.0% of organic phosphonate flame retardant, 0.0-15.0% of nitrogen-containing compound, 1.0-15.0% of viscosity modifier, 0.1-1.5% of antioxidant and ultraviolet absorbent, and the balance of polyether type polyurethane thermoplastic elastomer. The components are premixed, extruded and granulated to obtain the product.

Description

technical field [0001] The invention relates to the preparation of a high-temperature-resistant, high-humidity, halogen-free, flame-retardant polyester polyurethane thermoplastic elastomer (TPU). Organic phosphonates and nitrogen-containing compound flame retardants are used to maintain the high mechanical properties and flexibility of the TPU. No migration and precipitation under high temperature and high humidity environment (85°C, relative humidity 95%, cycle 96 hours), Shore hardness ranges from 72A to 95A, halogen-free flame retardant, meets RoHS2.0 requirements, no dripping, and can pass UL1581VW -1 and UL94V0 flame retardant test, suitable for wire and cable sheath materials and electronic plug connector materials. Background technique [0002] At present, halogen-free flame-retardant polyester thermoplastic TPU products are mainly made by adding phosphorus-nitrogen intumescent halogen-free flame retardant (IFR) of ammonium polyphosphate, melamine cyanurate (melamine ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/06C08K5/5313C08K5/3492C08K5/3472H01B7/17
Inventor 朱峰戚巧红王益锦刘君锭胡燕
Owner HANGZHOU JLS FLAME RETARDANTS CHEM
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