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155 DEG C high-strength, oil-resistant and flame-retardant polyolefin high-speed extruded thin-wall material and preparation method thereof

A high-speed extrusion, high-strength technology, applied in the high-strength oil-resistant flame-retardant polyolefin high-speed extrusion thin-walled material and its preparation field at 155°C, to achieve the effect of high strength

Active Publication Date: 2012-07-18
中广核拓普(湖北)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned special cables require the use of low-smoke halogen-free polyolefin materials, but in fact, no cable manufacturers currently use polyolefin materials, because there is no polyolefin on the market that can pass the performance test of such cables

Method used

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  • 155 DEG C high-strength, oil-resistant and flame-retardant polyolefin high-speed extruded thin-wall material and preparation method thereof
  • 155 DEG C high-strength, oil-resistant and flame-retardant polyolefin high-speed extruded thin-wall material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0035] Example 1: A 155°C high-strength oil-resistant flame-retardant polyolefin high-speed extrusion thin-walled material and its preparation method: the preparation method includes the following steps in sequence:

[0036] The first step: preparation of main base material particles: 20Kg EPDM rubber, 50Kg poly-4-methylpentene copolymer TPX, 10KgPOE8480, 0.3Kg compound antioxidant, 0.8Kg lubricant polyethylene wax, Add 0.3Kg methyl phenyl silicone oil and 0.5Kg rheological agent into the high-speed mixer, mix at room temperature for 3-5 minutes, then discharge into the parallel twin-screw granulator unit, melt extrusion, pelletize the underwater die surface, and dehydrate the particles After drying, the main base material granules are prepared; the working temperature of the extruder is: 170±5℃ in the first zone, 210±5℃ in the second zone, 230±5℃ in the third zone, 245±5℃ in the fourth zone, 240 in the fifth zone ±5°C.

[0037] The second step: Preparation of auxiliary bas...

Embodiment 2

[0040] With embodiment 1, difference is: the first step: get the copolymer TPX of 30Kg EPDM glue, 70Kg poly-4-methylpentene, 20Kg POE8480, 0.5Kg compound antioxidant, 1Kg lubricant poly Ethylene wax, 0.6Kg methyl phenyl silicone oil, 0.8Kg rheological agent; the second step: 30Kg silicone rubber, 30Kg nitrile silicone rubber, 60Kg EPDM rubber, 2Kg anti-aging agent RD, 15Kg high-efficiency expansion type halogen-free flame retardant agent, 3Kg talcum powder, 5Kg No. 10 white oil, 30Kg white carbon black, 3Kg sensitizer TMPTMA; the third step: 70Kg main base material particles, 40Kg auxiliary base material particles.

Embodiment 3

[0042] With embodiment 1, difference is: difference is simultaneously: the first step: get the copolymer TPX of 25Kg EPDM glue, 60Kg poly-4-methylpentene, 15Kg POE8480, 0.4Kg composite antioxidant, 0.9Kg lubricant polyethylene wax, 0.5Kg methyl phenyl silicone oil, 0.6Kg rheological agent; second step: 25Kg silicone rubber, 25Kg nitrile silicone rubber, 55Kg EPDM rubber, 1.8Kg anti-aging agent RD, 13Kg high-efficiency Intumescent halogen-free flame retardant, 2.5Kg talcum powder, 4Kg No. 10 white oil, 25Kg white carbon black, 2.5Kg sensitizer TMPTMA; third step: 65Kg main base material particles, 35Kg auxiliary base material particles.

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Abstract

The invention relates to a 155 DEG C high-strength, oil-resistant, halogen-free and flame-retardant polyolefin high-speed extruded thin-wall material and a preparation method thereof. The method comprises the following steps of: preparing main base material particles, namely adding ethylene propylene diene monomer (EPDM) rubber, copolymer of poly(4-methyl amylene), an ethylene-octene copolymer polyolefin elastomer (POE), a compound antioxidant, polyethylene wax serving as a lubricating agent, methyl phenyl silicone oil and a rheological agent into a high-speed mixer for mixing, performing melt extrusion, pelletizing on the underwater die surface, dehydrating the particles, and drying to prepare the main base material particles; preparing auxiliary base material particles, namely adding silicone rubber, nitrile silicone rubber, EPDM rubber, an antioxidant RD, a high-efficiency expanded halogen-free flame retardant and talcpowder into an internal mixer for internal mixing, and performing extrusion granulation; adding the prepared main base material particles and auxiliary base material particles into the high-speed mixer for mixing, performing melt extrusion, pelletizing on the underwater die surface, dehydrating the particles, and drying to prepare a finished product. The high-strength, oil-resistant, halogen-free and flame-retardant polyolefin high-speed extruded thin-wall material has oil resistance, flame retardance, high-temperature resistance, wear resistance and high strength.

Description

technical field [0001] The invention relates to a high-strength oil-resistant, halogen-free and flame-retardant polyolefin high-speed extruded thin-wall material and a preparation method thereof which are irradiated and cross-linked at 155°C. Background technique [0002] At present, the main high-temperature-resistant special cable products of low-smoke and halogen-free olefins include: copper core heat-resistant 150°C high-strength thin-walled cross-linked polyolefin insulation, halogen-free, low-smoke, flame-retardant cables for rolling stock, model: WDZ-DCYJ / B- 150; 155°C copper core radiation cross-linked polyolefin insulated motor winding lead wire (F grade); 150°C radiation cross-linked flame-retardant polyolefin insulated electrical installation wire; 150°C radiation cross-linked flame-retardant polyolefin automotive thin Wall wiring harness (close to the engine wiring harness); 125°C photovoltaic cables, etc. These cables are used under harsh conditions and have ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/20C08L23/16C08L23/08C08L83/04C08L83/07C08K13/04C08K3/34C08K3/36C08K7/24C08K3/32B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 陈林牛正
Owner 中广核拓普(湖北)新材料有限公司
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