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Application of Nitrile Group-Containing Compounds as Flame Retardant in Flame Retardant Thermoplastics

A thermoplastic and compound technology, applied in the field of flame retardant thermoplastic modification, to achieve the effect of improving residual quality and reducing smoke factor

Active Publication Date: 2018-12-04
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Like nitrile rubber, there is no relevant information about adding polyacrylonitrile as a flame retardant to polyurethane materials.

Method used

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  • Application of Nitrile Group-Containing Compounds as Flame Retardant in Flame Retardant Thermoplastics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Butadiene rubber was used as flame retardant to prepare flame retardant thermoplastic polyurethane elastomer composite-1.

[0023] The preparation method of the flame-retardant thermoplastic polyurethane elastomer composite material is:

[0024] 1) Sample preparation, weigh appropriate amount of TPU and BR in advance and put them into containers for later use.

[0025] 2) The temperature of the internal mixer is controlled at 180° C., the rotating speed is 30 rpm, and a thermoplastic polyurethane elastomer with a mass percentage of 98.00 wt % is added to the internal mixer, and after it is melted, 2.00 wt % of TPU is added. Butadiene rubber was melt-blended for 10 minutes, and the composite material was taken out and pressed into shape.

[0026] 3) The obtained material is placed in a constant temperature and humidity test box (25°C, 60% relative humidity) for 72 hours before performance testing.

[0027] 4) The obtained flame-retardant composite material is pressed i...

Embodiment 2

[0029] Butadiene rubber was used as flame retardant to prepare flame retardant thermoplastic polyurethane elastomer composite-2.

[0030] The preparation method of the flame-retardant thermoplastic polyurethane elastomer composite material is:

[0031] 1) The preparation of sample is the same as example 1.

[0032] 2) The temperature of the internal mixer is controlled at 180° C., the rotating speed is 30 rpm, and a thermoplastic polyurethane elastomer with a mass percentage of 95.00 wt % is added to the internal mixer, and after it is melted, 5.00 wt % of TPU is added. Butadiene rubber was melt-blended for 10 minutes, and the composite material was taken out and pressed into shape.

[0033] 3) The obtained material is placed in a constant temperature and humidity test box (25°C, 60% relative humidity) for 72 hours before performance testing.

[0034] 4) The obtained flame-retardant composite material is pressed into 100×100×3mm by a flat vulcanizing machine 3 sample. 35kW...

Embodiment 3

[0036] Butadiene rubber was used as flame retardant to prepare flame-retardant thermoplastic polyurethane elastomer composite-3.

[0037] The preparation method of the flame-retardant thermoplastic polyurethane elastomer composite material is:

[0038] 1) The preparation of sample is the same as example 1.

[0039] 2) The temperature of the internal mixer is controlled at 180° C., the rotating speed is 30 rpm, a thermoplastic polyurethane elastomer with a mass percentage of 90.00 wt % is added to the internal mixer, and after it is melted, 10.00 wt % of TPU is added. Butadiene rubber was melt-blended for 10 minutes, and the composite material was taken out and pressed into shape.

[0040] 3) The obtained material is placed in a constant temperature and humidity test box (25°C, 60% relative humidity) for 72 hours before performance testing.

[0041] 4) The obtained flame-retardant composite material is pressed into 100×100×3mm by a flat vulcanizing machine 3 sample. 35kW / m ...

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Abstract

The invention discloses a use of a nitrile group-containing compound as a fire retardant in flame retardation thermoplastic. The nitrile group-containing compound comprises at least one of nitrile rubber and polyacrylonitrile. Nitrile rubber and polyacrylonitrile as additives are used in a thermoplastic polyurethane elastomer so that polymer flame retardation performances are effectively improved, a heat release rate, a total heat release rate, a total heat release amount, a smoke production rate, a total smoke production amount and a smoke factor are substantially reduced and charcoal slag residual quality is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of modification of flame-retardant thermoplastics, and relates to the application of compounds containing nitrile groups as flame retardants in flame-retardant thermoplastics, especially the application in flame-retardant thermoplastics. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is one of the most commonly used plastics in the world. It has both the processing performance of plastics and the physical and mechanical properties of rubber. It has high elasticity, high strength, high wear resistance, radiation resistance, Mechanical properties such as oil resistance, low temperature brittleness resistance, and hardness can be adjusted in a wide range, and are widely used in many fields of the national economy. However, due to its special structure, TPU is extremely easy to burn. When TPU burns, the flame is violent and accompanied by thick black smoke, the heat release is large, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08L9/00C08L9/02C08L33/20B29B7/00
CPCB29B7/005C08L75/04C08L2201/02C08L2207/04C08L9/00C08L9/02C08L33/20
Inventor 陈希磊王文多焦传梅李少香钱翌
Owner QINGDAO UNIV OF SCI & TECH
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