Inflaming retarding thermoplastic polyurethane elastic body

A thermoplastic polyurethane and elastomer technology, applied in the field of flame retardant thermoplastic polyurethane elastomer, can solve the problems of poor comprehensive performance and reduce mechanical properties such as tensile strength elongation at break, etc., to achieve good mechanical properties, good wear resistance, The effect of high tensile strength and elongation at break

Active Publication Date: 2012-10-31
NINGBO QINGHU ELASTOMER SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after adding a flame retardant to the thermoplastic polyurethane of the prior art, the mechanical properties such as tensile strength, elongation at break, etc. are often significantly reduced while improving the flame retardancy, and the overall performance is relatively poor.

Method used

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  • Inflaming retarding thermoplastic polyurethane elastic body
  • Inflaming retarding thermoplastic polyurethane elastic body
  • Inflaming retarding thermoplastic polyurethane elastic body

Examples

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Embodiment Construction

[0032] Below in conjunction with embodiment the present invention is described in further detail.

[0033] The production process of the samples of the embodiment of the invention and the comparative example required for the test is as follows: first, the raw materials are melted and kneaded by a twin-screw extruder, and then the melted output from the die head of the extruder is cooled through a cooling tank , and finally made into pellets of flame-retardant thermoplastic polyurethane elastomer. The prepared flame-retardant thermoplastic polyurethane elastomer pellets were injection-molded using an injection molding machine, and fully stabilized at room temperature to finally obtain a sample to be tested, and various performance tests were performed.

[0034] See Table 1 below for the proportions by weight of the Examples and Comparative Examples, and Table 2 below for their properties and comparative results.

[0035] Table 1: The weight percent proportioning of embodiment ...

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Abstract

The invention discloses an inflaming retarding thermoplastic polyurethane elastic body which comprises the following components by weight percentage of: 60-80% of polyester thermoplastic polyurethane, 10-30% of halogen-free fire retardant, 1-10% of inflaming retarding synergist, 1-10% of chain extender, 0.1-2% of antioxidant and less than 5% of non-inflaming-retarding additive. According to the inflaming retarding thermoplastic polyurethane elastic body disclosed by the invention, the good inflaming retarding performance can be achieved and relatively good mechanical performances of previous high tensile strength, cracking elongation at break and the like of a TPU (Thermoplastic Polyurethane) raw material; the inflaming retarding thermoplastic polyurethane elastic body has the advantages of good wear resistance, tearing resistance, hydrolysis resistance and anti-ageing performance; and the inflaming retarding thermoplastic polyurethane elastic body does not contain halogens and heavy metal and particularly does not contain lead, cadmium, mercury, hexavalent chromium heavy metal, as well as poly-brominated diphenyl ether and poly-brominated biphenyls, so that the European Union RoH2.0 instruction requirements are met.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a flame-retardant thermoplastic polyurethane elastomer. Background technique [0002] TPU, or thermoplastic polyurethane, is a new type of organic polymer synthetic material, which has excellent elongation recovery, cold resistance, oil resistance, bending resistance, ozone aging resistance, etc., especially excellent wear resistance, and is widely used in automobiles, wires and cables. , medicine, footwear and other industrial fields. However, the flame retardancy of thermoplastic polyurethane is poor. Once burned, the flame is very violent and accompanied by thick black smoke, accompanied by severe droplet phenomenon, which has the risk of expanding the fire. In addition, thermoplastic polyurethane has poor hydrolysis resistance and aging resistance. [0003] One of the methods to improve the flame retardancy of thermoplastic polyurethane is to add flame retardant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L67/02C08K13/06C08K9/06C08K5/3492C08K5/315C08K5/5313C08K3/38
Inventor 史伟才项赛飞肖红杰
Owner NINGBO QINGHU ELASTOMER SCI & TECH
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