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Thermoplastic low-smoke zero-halogen flame-retardant polyolefin sheath material with high heat shock resistance and preparation method thereof

A polyolefin sheath, thermoplastic technology, applied in the field of plastic particles and its preparation, can solve the problems of high rubber material cost, low production efficiency, high manufacturing cost, etc., achieve low manufacturing cost, high production efficiency, and prevent stress cracking effect

Inactive Publication Date: 2014-12-10
WUXI JAKE PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the choice of sheath material for this type of cable, vulcanized rubber or cross-linked plastic with excellent thermal shock resistance is generally used, but the cost of rubber material is high, and it is difficult to extrude, and the cross-linked plastic needs to be extruded. Cross-linking, high manufacturing cost and low production efficiency

Method used

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  • Thermoplastic low-smoke zero-halogen flame-retardant polyolefin sheath material with high heat shock resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] First select 50 parts by weight of polyolefin elastomer, 10 parts by weight of high-density polyethylene resin, 25 parts by weight of K-resin, 15 parts by weight of functionalized polyolefin resin, 140 parts by weight of flame retardant, 1 part by weight of The surface modifier, the antioxidant of 0.5 parts by weight, the processing aid of 1.5 parts by weight.

[0019] Then, put the flame retardant in a high-speed mixer and stir at a high speed until the temperature is not lower than 80°C.

[0020] Afterwards, the surface modifier was added to the high-speed mixer and stirred for 3 minutes.

[0021] Afterwards, the polyolefin resin, high-density polyethylene resin, K-resin, functionalized polyolefin resin, antioxidant and processing aid were put into a high-speed mixer and continued to stir for 3 minutes.

[0022] Finally, feed the stirred material into a twin-screw mixing extruder with four temperature zones with a feeder, extrude into pellets, and dry to obtain a hig...

Embodiment 2

[0034] First select 80 parts by weight of polyolefin elastomer, 10 parts by weight of high-density polyethylene resin, 5 parts by weight of K-resin, 5 parts by weight of functionalized polyolefin resin, 150 parts by weight of flame retardant, 1 part by weight of The surface modifier, the antioxidant of 2 parts by weight, the processing aid of 6 parts by weight.

[0035] Then, put the flame retardant in a high-speed mixer and stir at a high speed until the temperature is not lower than 80°C.

[0036] Afterwards, the surface modifier was added to the high-speed mixer and stirred for 4 minutes.

[0037] Afterwards, the polyolefin resin, high-density polyethylene resin, K-resin, functionalized polyolefin resin, antioxidant and processing aid were put into a high-speed mixer and continued to stir for 4 minutes.

[0038] Finally, feed the stirred material into a twin-screw mixing extruder with four temperature zones with a feeder, extrude into pellets, and dry to obtain a high heat...

Embodiment 3

[0050] First select 50 parts by weight of polyolefin elastomer, 25 parts by weight of high-density polyethylene resin, 10 parts by weight of K-resin, 15 parts by weight of functionalized polyolefin resin, 180 parts by weight of flame retardant, 3 parts by weight of The surface modifier, the antioxidant of 2 parts by weight, the processing aid of 9 parts by weight.

[0051] Then, put the flame retardant in a high-speed mixer and stir at a high speed until the temperature is not lower than 80°C.

[0052] Afterwards, the surface modifier was added to the high-speed mixer and stirred for 4 minutes.

[0053] Afterwards, the polyolefin resin, high-density polyethylene resin, K-resin, functionalized polyolefin resin, antioxidant and processing aid were put into a high-speed mixer and continued to stir for 4 minutes.

[0054] Finally, feed the stirred material into a twin-screw mixing extruder with four temperature zones with a feeder, extrude into pellets, and dry to obtain a high h...

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Abstract

The invention relates to a thermoplastic low-smoke zero-halogen flame-retardant polyolefin sheath material with high heat shock resistance and a preparation method thereof. The preparation method is characterized by comprising the following steps: mixing and stirring polyolefin elastomer, high-density polyethylene resin, K-resin, functionalized polyolefin resin, a flame retardant, a surface modifier, an antioxidant and a processing aid by virtue of a high-speed stirrer and then extruding by virtue of a twin-screw mixer-extruder to obtain particles, namely, the thermoplastic low-smoke zero-halogen flame-retardant polyolefin sheath material with high heat shock resistance. Since the sheath material needs no crosslinking, the preparation cost is relatively low, the production efficiency is high and the sheath material is easily subjected to extrusion molding and has high heat shock resistance.

Description

technical field [0001] The invention relates to a plastic particle and a preparation method thereof. Specifically, it is a thermoplastic low-smoke halogen-free flame-retardant polyolefin sheath material with high thermal shock resistance and a preparation method thereof. Background technique [0002] Thermal shock refers to the phenomenon that through heat conduction or heat radiation, the object is heated locally, a large amount of heat exchange occurs in a short period of time, and the temperature changes drastically. Because the temperature of each part of the object rises at different speeds and the degree of expansion is also different, strain and stress will be generated inside it, and some stress may exceed the strength of the solid, causing it to break and fail. Cables laid or used in special occasions that require thermal shock resistance require not only reasonable structural design, but also very high requirements for thermal shock resistance of the outer sheath ...

Claims

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Application Information

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IPC IPC(8): C08L23/20C08L23/08C08L23/06C08L53/02C08L51/06C08K9/06C08K3/22H01B3/44H01B7/295B29C47/92B29C48/92
CPCC08L23/20C08L2201/02C08L2201/08C08L2201/22C08L2205/02C08L2205/035H01B3/441C08L23/06C08L53/02C08L51/06C08K13/06C08K9/06C08K2003/2224C08K2003/2227C08K5/1345C08K5/526
Inventor 祁建强游泳
Owner WUXI JAKE PLASTIC
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