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Irradiation crosslinked low-smoke halogen-free flame-retardant ethylene vinyl acetate elastomer and preparation method thereof

An ethylene vinyl acetate and elastomer technology, which is applied in the field of plastic particles and their preparation, can solve the problems of unsuitability for short-section processing, poor oil or solvent resistance, and high rejection rate, and achieves good ozone aging resistance, improved processing performance, The effect of improving liquidity

Active Publication Date: 2015-10-28
WUXI JAKE PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the former has soft properties, it has the disadvantages of poor heat resistance, poor wear resistance, poor oil resistance or solvent resistance.
The latter has the disadvantages of complicated processing technology, high production cost, high scrap rate, and not suitable for short-term processing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] First select the base resin A of 60 parts by weight, the base resin B of 40 parts by weight, the modified resin C of 8 parts by weight, the aluminum hydroxide of 60 parts by weight, the magnesium hydroxide of 90 parts by weight, the stearic acid of 6 parts by weight Zinc, 0.5 parts by weight of lubricant, 0.6 parts by weight of antioxidant, 0.8 parts by weight of crosslinking agent.

[0033] Then, put the base resin A, base resin B, modified resin C, aluminum hydroxide, magnesium hydroxide, zinc stearate, lubricant, antioxidant and crosslinking agent into the closed mixing at a temperature of 130°C In the machine, knead for 10 minutes to make a lump material.

[0034] Finally, put the lump material into a six-temperature section twin-screw extruder and extrude it into pellets to obtain radiation crosslinked low-smoke halogen-free flame-retardant ethylene vinyl acetate elastomer. The temperatures of the six temperature sections of the six-temperature section twin-screw ...

Embodiment 2

[0043] First select the base resin A of 65 parts by weight, the base resin B of 35 parts by weight, the modified resin C of 9 parts by weight, the aluminum hydroxide of 70 parts by weight, the magnesium hydroxide of 80 parts by weight, the stearic acid of 7 parts by weight Zinc, 0.7 parts by weight of lubricant, 0.8 parts by weight of antioxidant, and 0.9 parts by weight of crosslinking agent.

[0044] Then, put the base resin A, base resin B, modified resin C, aluminum hydroxide, magnesium hydroxide, zinc stearate, lubricant, antioxidant and crosslinking agent into the closed mixing at a temperature of 135°C In the machine, knead for 11 minutes to make a lump material.

[0045] Finally, put the lump material into a six-temperature section twin-screw extruder and extrude it into pellets to obtain radiation crosslinked low-smoke halogen-free flame-retardant ethylene vinyl acetate elastomer. The temperatures of the six temperature sections of the six-temperature section twin-sc...

Embodiment 3

[0054] First select the base resin A of 70 parts by weight, the base resin B of 30 parts by weight, the modified resin C of 10 parts by weight, the aluminum hydroxide of 80 parts by weight, the magnesium hydroxide of 70 parts by weight, the stearic acid of 8 parts by weight Zinc, 0.8 parts by weight of lubricant, 1.0 parts by weight of antioxidant, and 1.0 parts by weight of crosslinking agent.

[0055] Then, put the base resin A, base resin B, modified resin C, aluminum hydroxide, magnesium hydroxide, zinc stearate, lubricant, antioxidant and crosslinking agent into the closed mixing at a temperature of 140°C In the machine, knead for 12 minutes to make a lump material.

[0056] Finally, put the lump material into a six-temperature section twin-screw extruder and extrude it into pellets to obtain radiation cross-linked low-smoke halogen-free flame-retardant ethylene vinyl acetate elastomer. The temperatures of the six temperature sections of the six-temperature section twin-...

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Abstract

The invention relates to an irradiation crosslinked low smoke halogen-free flame-retardant ethylene vinyl acetate elastomer and a preparation method thereof and in particular relates to a raw material used for preparing soft cable sheaths with oil resistance and a preparation method thereof. The irradiation crosslinked low smoke halogen-free flame-retardant ethylene vinyl acetate elastomer is prepared by mixing the raw materials including a base resin A, a base resin B, a modified resin C, aluminium hydroxide, magnesium hydroxide, zinc stearate, a lubricant, an antioxidant, a crosslinking agent and the like in a closed mixer at 130-140 DEG C and then extruding the mixture with a double-screw extruder with six temperature stages. The wires and cables prepared by adopting the elastomer have the characteristics of good softness, halogen-free flame retardance, good heat resistance (110 DEG C under the condition of long-term use), good oil and solvent resistance, good wear resistance, simplicity in processing, lower production costs and the like.

Description

technical field [0001] The invention relates to a plastic particle and a preparation method thereof. Specifically, it is a raw material and a preparation method for making soft and oil-resistant cable sheaths. Background technique [0002] It is well known in the wire and cable production industry that in order to reduce the damage to personnel and equipment after the wire and cable sheath burns in the event of a fire, many wire and cable production industries are currently discussing the use of soft thermoplastic halogen-free flame-retardant polyolefin materials or soft Chemically cross-linked halogen-free flame-retardant polyolefin materials are used as sheaths for wires and cables. Although the former has soft properties, it has the disadvantages of poor heat resistance, poor wear resistance, poor oil resistance or solvent resistance. The latter has the disadvantages of complicated processing technology, high production cost, high scrap rate, and not suitable for short-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L31/04C08L51/06C08L23/30C08L83/04H01B3/44H01B7/295C08K13/02C08K3/22C08K5/098C08K5/103B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 游泳祁建强环征程
Owner WUXI JAKE PLASTIC
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