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Thermoplastic halogen-free low-smoke flame retardant polyolefin material applicable to high compression ratio screw extruder extrusion and its preparation

A low-smoke, flame-retardant, thermoplastic technology, applied in the field of flame-retardant materials, can solve problems such as extrusion difficulties, achieve the effects of improving mechanical properties, saving input costs, and improving production efficiency

Active Publication Date: 2013-01-30
SHANGHAI KAIBO SPECIAL CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the above-mentioned problems, and propose a thermoplastic halogen-free low-smoke flame-retardant polyolefin material that can be normally extruded by a screw extruder with a high compression ratio of 1:2-1:3. The production efficiency of materials and the extrusion efficiency of cables solve the problem of difficult extrusion of halogen-free flame retardant materials in high compression ratio screws

Method used

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  • Thermoplastic halogen-free low-smoke flame retardant polyolefin material applicable to high compression ratio screw extruder extrusion and its preparation
  • Thermoplastic halogen-free low-smoke flame retardant polyolefin material applicable to high compression ratio screw extruder extrusion and its preparation

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Effect test

Embodiment 1

[0043] The composition and weight (in Kg) of preparing thermoplastic halogen-free low-smoke flame-retardant polyolefin material are as follows:

[0044] Polyolefin resin EVA 30;

[0045] Mitsui DF840 30;

[0046] Ningbo Nengzhiguang MC509 15;

[0047] Borealis FB2230 25;

[0048] Magnesium hydroxide-based flame retardant system, 120;

[0049] Composite antioxidant 0.5;

[0050] Calcium stearate 0.1;

[0051] Polyethylene wax 0.3;

[0052] 58#paraffin wax 0.2;

[0053] Silicone rubber 2.5;

[0054] Vinyltris(2-methoxyethoxy)silane 1.0;

[0055] N, N'-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine 0.2;

[0056] The components of the magnesium hydroxide-based flame retardant system are as follows: 80% by weight of magnesium hydroxide, 10% by weight of antimony trioxide, 5% by weight of red phosphorus, and 5% by weight of calcium carbonate.

[0057] The composite antioxidant is composed of tetrakis [methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] p...

Embodiment 2

[0062] The composition and weight (in Kg) of preparing thermoplastic halogen-free low-smoke flame-retardant polyolefin material are as follows:

[0063] Polyolefin resin EVA 20;

[0064] Mitsui DF840 40;

[0065] Ningbo Nengzhiguang MC509 20;

[0066] Borealis FB2230 20;

[0067] Magnesium hydroxide based flame retardant system, 130;

[0068] Composite antioxidant 0.5;

[0069] Calcium stearate 0.1;

[0070] Polyethylene wax 0.6;

[0071] 58#paraffin wax 0.3;

[0072] Silicone rubber 1.5;

[0073] Vinyl tris(2-methoxyethoxy)silane 1.2;

[0074] N, N'-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine 0.2;

[0075] The components of the magnesium hydroxide-based flame retardant system are as follows: 80 wt% magnesium hydroxide, 10 wt% antimony trioxide, 5 wt% red phosphorus, and 5 wt% calcium carbonate.

[0076] The composite antioxidant is composed of tetrakis [methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, (2,4-di-tert-buty...

Embodiment 3

[0080] The composition and weight (in Kg) of preparing thermoplastic halogen-free low-smoke flame-retardant polyolefin material are as follows:

[0081] Polyolefin resin EVA 10;

[0082] Mitsui DF840 40;

[0083] Ningbo Nengzhiguang MC509 20;

[0084] Borealis FB2230 30;

[0085] Magnesium hydroxide based flame retardant system, 140;

[0086] Composite antioxidant 0.5;

[0087] Calcium stearate 0.15;

[0088] Polyethylene wax 1.0;

[0089] 58#paraffin wax 0.3;

[0090] Silicone rubber 1.2;

[0091] Vinyl tris(2-methoxyethoxy)silane 1.2;

[0092] N, N'-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine 0.2;

[0093] The components of the magnesium hydroxide-based flame retardant system are as follows: 80 wt% magnesium hydroxide, 10 wt% antimony trioxide, 5 wt% red phosphorus, and 5 wt% calcium carbonate.

[0094] The composite antioxidant is composed of tetrakis [methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, (2,4-di-tert-but...

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Abstract

Belonging to the field of flame-retardant materials, the invention relates to a thermoplastic halogen-free low-smoke flame retardant polyolefin material applicable to high compression ratio screw extruder extrusion and its preparation. The thermoplastic halogen-free low-smoke flame retardant polyolefin material provided in the invention comprises: polyolefin resin EVA, a polyolefin elastomer, compatibilizing resin, polyethylene resin, a flame retardant, a composite antioxidant, a lubricant, a silane coupling agent and a metal passivating agent, wherein the lubricant includes a stearate, polyethylene wax, paraffin wax and silicone rubber. The thermoplastic halogen-free low-smoke flame retardant polyolefin material prepared by invention can be extruded in a screw extruder with a high compression ratio of 1:2-1:3. Thus, the material production efficiency and cable extrusion efficiency are improved, and the problem that halogen-free flame retardant materials are difficult to extrude in high compression ratio screws can be solved.

Description

technical field [0001] The invention belongs to the field of flame-retardant materials, and relates to a thermoplastic halogen-free low-smoke flame-retardant polyolefin material suitable for extruding by a screw extruder with a high compression ratio and its preparation. technical background [0002] Traditional thermoplastic halogen-free low-smoke flame-retardant polyolefin materials are filled with a large amount of flame retardants in the extruded resin, the overall fluidity of the material is very poor, and friction generates a lot of heat during extrusion. If the extrusion speed is too fast When the temperature rises, the material will decompose. Therefore, the screw with a very low compression ratio must be used in the preparation of the material and the subsequent production of the cable to be extruded normally, which greatly reduces the production output of the material itself and the output of the cable production. Many cable manufacturers use PVC and halogen-free m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00C08L23/08C08L31/04C08L23/06C08L51/06C08K13/02C08K5/54C08K5/098H01B7/295B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40
Inventor 胡婧慧项健
Owner SHANGHAI KAIBO SPECIAL CABLE FACTORY