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Flame retardant and application of flame retardant in thermoplastic polyurethane elastomer flame retardancy

A thermoplastic polyurethane and flame retardant technology, applied in the field of flame retardant thermoplastic polyurethane elastomer modification, can solve the problems of large heat release, dripping dripping, and large amount of flame retardant added.

Pending Publication Date: 2019-08-09
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composition and structure of TPU itself also determine that it has the disadvantages of being extremely flammable, with violent flames and thick black smoke, a large amount of heat release, and serious droplet dripping phenomenon.
These shortcomings greatly limit the wider application of thermoplastic polyurethane elastomers, so the research on flame-retardant thermoplastic polyurethane elastomer materials has always been a hot spot in the research of polyurethane elastomer materials today.
According to "Development of Flame Retardants and Application in Plastics" (Plastic, 31:11-15, 2002), traditional flame retardants (such as halogenated flame retardants) often produce a lot of harmful smoke in fires , and even increase the toxicity and corrosiveness of the flue gas, easily causing heavy casualties
Traditional halogen-free flame retardants, such as aluminum-magnesium hydroxide, have good flame-retardant effects, low smoke and non-toxicity, but the addition of flame retardants is relatively large, which reduces the mechanical properties of materials such as tensile strength and breaking strength.

Method used

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  • Flame retardant and application of flame retardant in thermoplastic polyurethane elastomer flame retardancy
  • Flame retardant and application of flame retardant in thermoplastic polyurethane elastomer flame retardancy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]Control the temperature of the internal mixer at 180°C, and the rotational speed is 30 rpm, add thermoplastic polyurethane elastomer with a mass percentage of 90.875% into the internal mixer, and add high-concentration carbon microspheres with a mass percentage of 1.25% after it is melted Thermoplastic polyurethane elastomer masterbatch, melt and blend for 3 minutes, add ammonium polyphosphate with a mass percentage of 7.875%, melt and blend for 10 minutes, take out the composite material and put it in 100×100×3mm 3 In the mould, press into tablets with a flat vulcanizer, control the temperature at 170-180°C, hold the pressure for 10-15 minutes, and cool for 50-60 seconds to obtain the product. Put the sample at 35kW / m 2 The cone calorimeter test was carried out under the radiation power, and the results are shown in Table 1.

Embodiment 2

[0034] The temperature of the internal mixer is controlled at 180°C, the rotating speed is 30 rpm, and the thermoplastic polyurethane elastomer with a mass percentage of 89.75% is added to the internal mixer, and the high-concentration carbon microspheres with a mass percentage of 2.5% are added after it is melted Thermoplastic polyurethane elastomer masterbatch, melt and blend for 3 minutes, add ammonium polyphosphate with a mass percentage of 7.75%, melt and blend for 10 minutes, take out the composite material and put it in 100×100×3mm 3 Press into a tablet with a flat vulcanizing machine, control the temperature at 170-180° C., hold the pressure for 10-15 minutes, and cool for 50-60 seconds to obtain the sample. Put the sample at 35kW / m 2 The cone calorimeter test was carried out under the radiation power, and the results are shown in Table 1.

Embodiment 3

[0036] The temperature of the internal mixer is controlled at 180°C, the rotating speed is 30 rpm, and 83% by mass of thermoplastic polyurethane elastomer is added to the internal mixer, and after it is melted, 10% by mass of high-concentration carbon microspheres are added Thermoplastic polyurethane elastomer masterbatch, melt and blend for 3 minutes, add ammonium polyphosphate with a mass percentage of 7%, melt and blend for 10 minutes, take out the composite material and put it in 100×100×3mm 3 Press into a tablet with a flat vulcanizing machine, control the temperature at 170-180° C., hold the pressure for 10-15 minutes, and cool for 50-60 seconds to obtain the sample. Put the sample at 35kW / m 2 The cone calorimeter test was carried out under the radiation power, and the results are shown in Table 1.

[0037] Table 1 Flame-retardant thermoplastic polyurethane elastomer composite material performance table-1 of the present invention

[0038]

[0039]

[0040] It can...

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PUM

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Abstract

The invention relates to application of a flame retardant comprising carbon microspheres and modified bodies of carbon microspheres in a flame retardant thermoplastic polyurethane elastomer. The carbon microspheres and the modified bodies thereof can effectively improve the flame retardancy of a polymer when added into the thermoplastic polyurethane elastomer together with ammonium polyphosphate as additives, the heat release rate, total heat release, smoke generation rate, total smoke generation amount and carbon monoxide concentration are obviously reduced, and the remaining quality of carbon residues is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant thermoplastic polyurethane elastomer modification, and particularly relates to the compounding of carbon microspheres and modified products thereof with ammonium polyphosphate as a flame retardant in flame-retardant thermoplastic polyurethane elastomer. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is a new type of engineering plastic widely used at present. It has both the elasticity of rubber and the characteristics of plastic at room temperature. It is a special material between rubber and plastic. TPU has the characteristics of high tension, high tensile strength, toughness and wear resistance. It has better elasticity than other polyurethanes and stronger aging resistance than rubber. It has been widely used in more and more fields and has become a daily Indispensable precious materials in life and industrial production. However, the composition and structu...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08K9/02C08K7/18C08K3/32C08J3/22
CPCC08K9/02C08K7/18C08K3/32C08J3/226C08L2201/02C08K2003/323C08J2375/04C08J2475/04C08L75/04
Inventor 焦传梅来永兴陈希磊李少香匡少平
Owner QINGDAO UNIV OF SCI & TECH
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