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Irradiation crosslinked LSOH (low smoke halogen-free) flame-retardant ethylene propylene rubber elastomer material and preparation method thereof

A technology of ethylene propylene rubber and irradiation, applied in the direction of rubber insulators, conductors, insulated conductors, etc., can solve the problems of secondary fire hazards, a lot of smoke, toxicity, etc., and achieve good flame retardancy, uniform cross-linking points, and cross-linking. high density effect

Active Publication Date: 2013-12-18
WUXI JAKE PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Non-flame retardant ethylene propylene rubber elastomer insulation materials have fire hazards, and halogen-containing flame retardant ethylene propylene rubber elastic insulation materials will produce a lot of smoke and toxic and corrosive hydrogen halide gases when burned in case of fire. Conducive to personnel escape, will cause fire "secondary hazard"

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] First choose the base rubber A of 65 parts by weight, the base rubber B of 35 parts by weight, the aluminum hydroxide of 65 parts by weight, the magnesium hydroxide of 80 parts by weight, the 3.5 water zinc borate of 12 parts by weight, the talcum powder of 10 parts by weight, 5 parts by weight of stearic acid, 1 part by weight of antioxidant and 0.9 parts by weight of crosslinking agent.

[0033] Then, put base rubber A, base rubber B, aluminum hydroxide, magnesium hydroxide, zinc borate 3.5 hydrate, talcum powder, zinc stearate, antioxidant and cross-linking agent into the closed mixing at a temperature of 120°C In the machine, knead for 10 minutes to obtain a lump material.

[0034] Afterwards, the lump material was put into an open rubber mixing machine with a temperature of 80° C., and rolled into a sheet-like material with a thickness of 2 mm.

[0035] Afterwards, the flake material was cut into square particles with a flat granulator.

[0036] Finally, the squa...

Embodiment 2

[0043] First choose the base rubber A of 70 parts by weight, the base rubber B of 30 parts by weight, the aluminum hydroxide of 75 parts by weight, the magnesium hydroxide of 70 parts by weight, the 3.5 water zinc borate of 16 parts by weight, the talcum powder of 15 parts by weight, 7 parts by weight of stearic acid, 1.2 parts by weight of antioxidant and 1.2 parts by weight of crosslinking agent.

[0044] Then, put base rubber A, base rubber B, aluminum hydroxide, magnesium hydroxide, zinc borate 3.5 hydrate, talcum powder, zinc stearate, antioxidant and cross-linking agent into the closed mixing at a temperature of 125°C machine, kneading for 11 minutes to obtain a doughy material.

[0045] Afterwards, the lump material was put into an open rubber mixer at a temperature of 90° C., and rolled into a sheet-like material with a thickness of 2.5 mm.

[0046] Afterwards, the flake material was cut into square particles with a flat granulator.

[0047] Finally, the square parti...

Embodiment 3

[0054] First choose the base rubber A of 75 parts by weight, the base rubber B of 25 parts by weight, the aluminum hydroxide of 85 parts by weight, the magnesium hydroxide of 60 parts by weight, the 3.5 water zinc borate of 20 parts by weight, the talcum powder of 20 parts by weight, 8 parts by weight of stearic acid, 1.6 parts by weight of antioxidant and 1.5 parts by weight of crosslinking agent.

[0055] Then, put base rubber A, base rubber B, aluminum hydroxide, magnesium hydroxide, zinc borate 3.5 hydrate, talcum powder, zinc stearate, antioxidant and crosslinking agent into the closed mixing at a temperature of 130°C In the machine, knead for 12 minutes to obtain a lump material.

[0056] Afterwards, the lump material was put into an open rubber mixer at a temperature of 100° C., and rolled into a sheet-like material with a thickness of 3 mm.

[0057] Afterwards, the flake material was cut into square particles with a flat granulator.

[0058] Finally, the square particl...

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PUM

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Abstract

The invention relates to an irradiation crosslinked LSOH (low smoke halogen-free) flame-retardant ethylene propylene rubber elastomer material and a preparation method thereof. The preparation method is characterized in that the irradiation crosslinked LSOH flame-retardant ethylene propylene rubber elastomer material is prepared from a basic rubber A, a basic rubber B, aluminum hydroxide, magnesium hydroxide, 3.5 hydrated zinc borate, talcum powder, zinc stearate, an antioxidant, a crosslinking agent and the like through the steps of mixing the raw materials by using an open mixing machine and then carrying out extrusion by using a five-temperature-period single-screw extruder. When the irradiation crosslinked LSOH flame-retardant ethylene propylene rubber elastomer material burns in a fire, a lot of smoke and gases such as poisonous and corrosive halogen hydride cannot be produced, which is beneficial to the escape of people the personnel escape and avoids secondary hazards of a fire disaster. The material also has the characteristics of good flexibility, good fluidity in the process of extruding, good electrical, mechanical and physical properties, high temperature resistance level (can be used for a long time in a 125 DEG C environment), and the like. The irradiation crosslinked LSOH flame-retardant ethylene propylene rubber elastomer material can be used as a raw material of an insulating layer of an electric wire with soft and movable properties.

Description

technical field [0001] The invention relates to a plastic particle and a preparation method thereof. Specifically, it is the raw material used to make the insulating layer of wires and cables with soft and mobile properties----irradiation cross-linked low-smoke, halogen-free, flame-retardant ethylene-propylene rubber elastomer material. Background technique [0002] It is known in the wire and cable production industry that ethylene propylene rubber is widely used as insulating material for wire and cable because of its good insulation properties, good low temperature resistance, flexibility, and good mechanical properties, especially in ships, It is widely used in flexible and mobile wires and cables such as mines. At present, most of the ethylene-propylene rubber elastomer insulating materials used in China for wire and cable have no flame-retardant properties, and a small part are halogen-containing flame-retardant. Non-flame retardant ethylene propylene rubber elastome...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/02C08K3/22C08K3/38C08K3/34C08K5/098C08K5/3492C08K5/14C08K5/134C08K5/372B29B9/06B29C47/92H01B3/28H01B7/295B29C48/92
Inventor 游泳祁建强环征程
Owner WUXI JAKE PLASTIC
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