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Low-smoke halogen-free flame retardant material and preparation method thereof

A technology of flame retardant materials and flame retardants, applied in the field of flame retardant materials, can solve the problems of large amount of addition, decreased mechanical properties of wire and cable materials, poor compatibility between inorganic flame retardants and resins, etc. Manufacture and promotion, the effect of simple process

Active Publication Date: 2019-07-30
GUANGDONG RIFENG ELECTRIC CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compatibility between inorganic flame retardants and resins is poor, and the addition amount is relatively large, which often leads to a decrease in the mechanical properties of wire and cable materials.

Method used

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  • Low-smoke halogen-free flame retardant material and preparation method thereof
  • Low-smoke halogen-free flame retardant material and preparation method thereof
  • Low-smoke halogen-free flame retardant material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This example provides a low-smoke halogen-free flame-retardant material, including the following components in parts by weight:

[0058] Ethylene-vinyl acetate rubber: 80 parts, magnesium hydroxide: 40 parts, aluminum hydroxide: 50 parts, carbon black: 2 parts, dioctyl sebacate: 5 parts, zinc oxide: 4 parts, stearic acid: 0.5 parts, antioxidant: 2 parts, flame retardant: 10 parts, vinyl tris(2-methoxyethoxy) silane: 1 part, processing aid: 4 parts, sensitizer: 2 parts.

[0059] Among them, the Mooney viscosity of ethylene-vinyl acetate rubber is ML 1+4 100°C: 23, and the VAC content is 48.5%.

[0060] The iodine absorption value of carbon black is greater than 82±6g / kg, and the DBP oil absorption value is greater than 102±6cm 3 / 100g.

[0061] The loss on ignition of magnesium hydroxide is more than 30%, and the particle size D50 is less than or equal to 2.0 μm.

[0062] The weight loss on ignition of aluminum hydroxide is ≥34%, the particle size D50 is ≤2.0um, and t...

Embodiment 2

[0069] This example provides a low-smoke halogen-free flame-retardant material, including the following components in parts by weight:

[0070] Ethylene-vinyl acetate rubber: 120 parts, magnesium hydroxide: 60 parts, aluminum hydroxide: 80 parts, carbon black: 10 parts, dioctyl sebacate: 10 parts, zinc oxide: 10 parts, stearic acid: 1.5 parts, antioxidant: 4 parts, flame retardant: 20 parts, vinyl tris(2-methoxyethoxy) silane: 3 parts, processing aid: 6 parts, sensitizer: 5 parts.

[0071] Among them, the Mooney viscosity of ethylene-vinyl acetate rubber is ML 1+4 100°C: 31, and the VAC content is: 51.5%.

[0072] The iodine absorption value of carbon black is greater than 82±6g / kg, and the DBP oil absorption value is greater than 102±6cm 3 / 100g.

[0073] The loss on ignition of magnesium hydroxide is more than 30%, and the particle size D50 is less than or equal to 2.0 μm.

[0074] The weight loss on ignition of aluminum hydroxide is ≥34%, the particle size D50 is ≤2.0um,...

Embodiment 3

[0081] This example provides a low-smoke halogen-free flame-retardant material, including the following components in parts by weight:

[0082] Ethylene-vinyl acetate rubber: 100 parts, magnesium hydroxide: 50 parts, aluminum hydroxide: 65 parts, carbon black: 6 parts, dioctyl sebacate: 7.5 parts, zinc oxide: 7 parts, stearic acid: 1 parts, anti-aging agent: 3 parts, flame retardant: 15 parts, vinyl tris(2-methoxyethoxy) silane: 2 parts, processing aid: 5 parts, sensitizer: 3 parts.

[0083] Among them, the Mooney viscosity of ethylene-vinyl acetate rubber is ML 1+4 100°C: 27, and the VAC content is: 50%.

[0084] The iodine absorption value of carbon black is greater than 82±6g / kg, and the DBP oil absorption value is greater than 102±6cm 3 / 100g.

[0085] The loss on ignition of magnesium hydroxide is more than 30%, and the particle size D50 is less than or equal to 2.0 μm.

[0086] The weight loss on ignition of aluminum hydroxide is ≥34%, the particle size D50 is ≤2.0um,...

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Abstract

According to the technical scheme, the invention provides a low-smoke halogen-free flame retardant material and a preparation method thereof. The low-smoke halogen-free flame retardant material contains ethylene-vinyl acetate rubber, magnesium hydroxide, aluminium hydroxide, carbon black and the like, and all the properties of the material can meet or even exceed the requirements of the national standard, and are superior to those of existing similar materials. The problems are solved that existing flame retardant wire and cable materials are not resistant to high temperature, poor in physicalproperty and large in smoke quantity during combustion and can generate a large amount of toxic and harmful gas due to combustion. The preparation method of the low-smoke halogen-free flame retardantmaterial is simple in process, needed equipment is not complex, and manufacturing and popularization are easy.

Description

technical field [0001] The invention belongs to the technical field of flame retardant materials, and in particular relates to a low-smoke, halogen-free flame retardant material and a preparation method thereof. Background technique [0002] Wires and cables are linear objects, and they are also linear as ignition sources. The flame spreads with the trend of wires and cables. The burning rate of horizontal cables is 3.5m / min, while the vertical burning rate of vertical wires and cables reaches 8-9m. / min. Once the wires and cables are ignited, they burn rapidly and are difficult to control. The causes of fires in wires and cables include: (1) wires and cables are responsible for transmitting energy, and they will have a certain temperature. If the temperature exceeds the range they can withstand, they will burn; In the case of load operation, the insulation layer and the sheath layer will be partially aged; (3) Since the wire and cable have a certain temperature under the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L31/04C08L23/06C08L91/06C08K13/02C08K3/22C08K3/04C08K5/3492C08K5/521H01B3/44
CPCC08L23/0853C08L31/04H01B3/448H01B3/441C08K2003/2227C08K2003/2224C08L2205/03C08L2201/02C08L2203/202C08L2201/22C08L23/06C08L91/06C08K13/02C08K3/22C08K3/04C08K5/34928C08K5/521
Inventor 邹坤初鲍继强罗典庆
Owner GUANGDONG RIFENG ELECTRIC CABLE