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

A technology of thermoplastic elastomer and flame-retardant polyester, which is applied in the direction of conductors, insulated conductors, electrical components, etc., to achieve good flame-retardant performance and improve the effect of high-temperature and high-humidity precipitation resistance

Active Publication Date: 2011-07-13
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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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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