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Low-smoke halogen-free flame retardant thermoplastic polyurethane elastomer for cable and preparation method thereof

A thermoplastic polyurethane and elastomer technology, applied in the direction of insulating cables, plastic/resin/wax insulators, cables, etc., can solve the problems of non-flammability, toxic gas, and large release, and achieve good low-smoke performance and good resistance Combustibility, the effect of simple process

Inactive Publication Date: 2013-12-11
ADVANCED THERMOPLASTIC POLYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, general thermoplastic polyurethane elastomers do not have flame retardancy. In order to achieve the purpose of flame retardancy, people usually add halogen-containing (such as bromine) flame retardants to achieve it. It will not only emit a lot of smoke, but also emit toxic gas, which seriously endangers the safety of people's lives and property, and does not comply with the EU's environmental protection directives

Method used

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  • Low-smoke halogen-free flame retardant thermoplastic polyurethane elastomer for cable and preparation method thereof
  • Low-smoke halogen-free flame retardant thermoplastic polyurethane elastomer for cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A low-smoke, halogen-free, flame-retardant thermoplastic polyurethane elastomer for cables provided in this embodiment comprises the following components by weight percentage:

[0048] Polyester thermoplastic polyurethane 82%;

[0049] Halogen-free flame retardant ammonium phosphate 10%;

[0050] Smoke suppressant zinc aluminate 7.2%;

[0051] Antioxidant Tetrakis[methylene-3,3',5-(di-tert-butyl-4-hydroxy-phenyl)propionate]pentaerythritol ester 0.2%;

[0052] Antiaging agent N-phenyl-α-aniline 0.2%;

[0053] Stabilizer zinc stearate 0.2%;

[0054] Anti-hydrolysis agent carbodiimide 0.2%.

[0055] Among them, polyester thermoplastic polyurethane is prepared from polyester polyol, 4,4'-diphenylmethane diisocyanate (MDI) and 1,4-butanediol as raw materials.

[0056] The preparation method of a low-smoke halogen-free flame-retardant thermoplastic polyurethane elastomer for cables provided in this embodiment includes the following steps:

[0057] In the first step, pol...

Embodiment 2

[0060] A low-smoke, halogen-free, flame-retardant thermoplastic polyurethane elastomer for cables provided in this embodiment comprises the following components by weight percentage:

[0061] Polyester thermoplastic polyurethane 70%;

[0062] Halogen-free flame retardant melamine 20%;

[0063] Smoke suppressant zinc stannate 9.6%;

[0064] Antioxidant N,N'-bis[[3-(3,5)-di-tert-butyl-4-hydroxyphenyl]propionyl]hexamethylenediamine 0.1%;

[0065] Antiaging agent N-phenyl-β-naphthylamine 0.1%;

[0066] Stabilizer calcium stearate 0.1%;

[0067] Anti-hydrolysis agent biscarbodiimide 0.1%.

[0068] Among them, polyester thermoplastic polyurethane is prepared from polyester polyol, 4,4'-diphenylmethane diisocyanate (MDI) and 1,4-butanediol as raw materials.

[0069] The preparation method of a low-smoke halogen-free flame-retardant thermoplastic polyurethane elastomer for cables provided in this embodiment includes the following steps:

[0070] In the first step, polyester ther...

Embodiment 3

[0073] A low-smoke, halogen-free, flame-retardant thermoplastic polyurethane elastomer for cables provided in this embodiment comprises the following components by weight percentage:

[0074] Polyether thermoplastic polyurethane 35%;

[0075] Halogen-free flame retardant montmorillonite 49.7%;

[0076] Smoke suppressant ferric oxide 15%;

[0077] Antioxidant tris[2,4-di-tert-butylphenyl]phosphite 0.075%;

[0078] Anti-aging agent N-phenyl-N`-cyclohexyl-p-phenylenediamine 0.075%;

[0079] Stabilizer ethylene stearamide 0.075%;

[0080] Anti-hydrolysis agent polycarbodiimide 0.075%.

[0081] Among them, polyether thermoplastic polyurethane is prepared from polytetrahydrofuran, toluene diisocyanate (TDI) and 1,4-butanediol as raw materials.

[0082] The preparation method of a low-smoke halogen-free flame-retardant thermoplastic polyurethane elastomer for cables provided in this embodiment includes the following steps:

[0083] In the first step, polyester thermoplastic pol...

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Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to a low-smoke halogen-free flame retardant thermoplastic polyurethane elastomer for a cable. The low smoke halogen-free flame retardant thermoplastic polyurethane elastomer comprises the following components by weight percent: 27.9-87.9% of thermoplastic polyurethane, 10-70% of a halogen-free flame retardant, 2-20% of a smoke suppressor, 0.025-0.5% of an antioxygen, 0.025-0.5% of an antiager, 0.025-0.5% of a stabilizer, and 0.025-0.5% of an anti-hydrolytic agent. Compared with the prior art, the multiple excellent performance of the thermoplastic polyurethane is used, and besides, appropriate amount of the halogen-free flame retardant and the smoke suppressor are added, so that the low smoke halogen-free flame retardant thermoplastic polyurethane elastomer provided by the invention has excellent characteristics of fire resistance and low smoke. As the added flame retardant contains no halogen or heavy metal elements like lead, cadmium, mercury, chromium and the like, the environmental requirement of zero-halogen is met. In addition, the invention further discloses a preparation method of the elastomer.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a low-smoke, halogen-free, flame-retardant thermoplastic polyurethane elastomer for cables and a preparation method thereof. Background technique [0002] At present, cables are widely used in the fields of power systems, information transmission, and instrumentation systems. However, the cable covering materials made of traditional polymer material PVC are prone to fire and combustion during use, causing fires. Due to the The chlorine content is as high as 60%, which produces fumes of toxic gases such as hydrogen halides and carbon monoxide during combustion. [0003] Polyurethane elastomer refers to a type of elastomeric polymer containing more carbamate functional groups (NH-CO-O-) on the main chain of the macromolecule. It is a typical multi-block copolymer with wear resistance. Good, wide hardness range, high strength, high elongation, large load suppo...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L75/08C08L75/06H01B3/30H01B7/295C08K13/02C08K3/32C08K5/3492C08K3/38C08K3/34C08K3/22C08K5/521C08K5/5313C08K5/053C08K3/00C08K3/24B29B9/06B29C47/92B29C48/92
CPCB29C48/022
Inventor 刘悦钟荣栋
Owner ADVANCED THERMOPLASTIC POLYMER TECH