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Fire-retardancy polyurethane composition containing no halogen and non-thermal contraction pipe using thereof

A thermoplastic polyurethane, flame retardant technology, applied in the field of flame retardant polyurethane composition, polyurethane flame retardant and non-heat shrinkable pipe, can solve the problems of poor wear resistance and the like

Inactive Publication Date: 2010-01-13
LG CABLE LTD (KR)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor abrasion resistance of polyolefins, there is still much room for improvement for non-heat-shrinkable tubes used to protect cables
[0005] The industry concerned has not adequately addressed the need for halogen-free, flame-retardant, non-heat-shrinkable tubes based on composite polymer materials with excellent mechanical properties and wear resistance

Method used

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  • Fire-retardancy polyurethane composition containing no halogen and non-thermal contraction pipe using thereof
  • Fire-retardancy polyurethane composition containing no halogen and non-thermal contraction pipe using thereof

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Embodiment

[0026] In order to compare the performance between the non-heat-shrinkable tube of the present invention and a conventional non-heat-shrinkable tube, flame-retardant resin compositions were prepared according to Examples and Comparative Examples. Non-heat-shrinkable tube samples were manufactured using the flame-retardant resin composition, and then their properties were evaluated.

[0027] The compositions of the flame-retardant resin compositions of Examples and Comparative Examples are shown in Table 1 below.

[0028] [Table 1]

[0029]

[0030] * : Polyurethane with a hardness of 87A, manufactured by SK Chemicals

[0031] ** : Ethylene-vinyl acetate resin grafted with 1% by weight of maleic anhydride

[0032] Polyvinyl chloride resin (polymerization degree: 1300) using diisodecyl phthalate as a plasticizer [polymer: plasticizer = 67% by weight: 33% by weight]

[0033] EVA resin with 25% by weight vinyl acetate monomer

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Abstract

The invention discloses a fire-retardancy polyurethane resin containing no halogen and having coordinated room temperature mechanical property and abrasive resistance property. The fire-retardancy resin comprises a basal resin and an inorganic combustion inhibitor, the basal resin comprises a thermoplastic polyurethane elastomer and a polar olefin resin. The polar olefin resin is a polyolefin containing at least one functional group, the functional group is selected from a polar material group composed by maleic anhydride, glycidyl methacrylate, anhydrous maleic acid, silicone hydride and fatty acid. The inorganic combustion inhibitor is a metallic hydroxides or a metallic oxide.

Description

technical field [0001] The present invention relates to polyurethane flame retardant and non-heat shrinkable tubes. More specifically, the present invention relates to a halogen-free flame-retardant polyurethane composition comprising thermoplastic polyurethane and an inorganic flame retardant, and a non-heat-shrinkable tube using the composition. Background technique [0002] Non-heat-shrinkable tubing does not shrink in size when heated, and can be used as sheathing for electrical cables, sheathing for wiring harnesses, and fluid transfer tubing, among other things. Currently, polyvinyl chloride (PVC) tubing is the most commonly used non-heat-shrinkable tubing. However, non-heat-shrinkable Teflon tubes may also be used depending on usage purposes such as usage temperature or chemical resistance. Polyvinyl chloride has the advantages of low cost, good flame retardancy and satisfactory strength. Teflon has good flame retardancy as well as excellent chemical and heat resis...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L75/06C08L75/08C08L51/06C08K3/22C08K3/26
CPCC08K3/016C08K3/2279C08K5/34924C08K2003/222C08L23/00C08L75/04C08L2201/02C08L2201/22C08L2203/18C08L2207/04
Inventor 金元中金昌石杨载天南基准李朱荷
Owner LG CABLE LTD (KR)
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