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Microwave induced intumescent flame-retardant silane crosslinked polyolefin sheath material for cables and preparation method thereof

A polyolefin sheathed, intumescent flame retardant technology, applied to insulated cables, cables, conductors, etc., can solve the problems of poor flame retardant effect, long boiling time, poor product stability, etc., to improve water resistance and easy operation. , the effect of low cost

Inactive Publication Date: 2013-12-11
HONGLONGJIANG ORIENT SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems that the existing flame retardant silane crosslinked sheath material needs to be boiled, and the boiling time is long, the product stability is poor, and the flame retardant effect is poor, and a microwave-induced expansion flame retardant silane is provided. Polyolefin sheath material for cross-linked cables and preparation method thereof

Method used

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  • Microwave induced intumescent flame-retardant silane crosslinked polyolefin sheath material for cables and preparation method thereof
  • Microwave induced intumescent flame-retardant silane crosslinked polyolefin sheath material for cables and preparation method thereof

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specific Embodiment approach 1

[0028] Specific embodiment 1: The microwave-induced expansion flame-retardant polyolefin sheath material for silane cross-linked cable of this embodiment consists of 100 parts by weight of dried polyolefin resin, 25-80 parts of intumescent flame retardant, and 0.1-4 parts by weight It is made of silane coupling agent, 0.2-3 parts microwave absorbent, 0.1-4 parts water producing agent, 0.3-5 parts multifunctional cross-linking agent, 0.01-5 parts cross-linking accelerator and 0.07-0.5 parts antioxidant.

specific Embodiment approach 2

[0029] Specific embodiment two: this embodiment is different from specific embodiment one in that the polyolefin resin is high-density polyethylene, medium-density polyethylene, low-density polyethylene, low-density linear polyethylene, ethylene-vinyl acetate copolymer, and One or a combination of several polyolefin elastomers. Others are the same as the first embodiment.

[0030] When the polyolefin resin described in the present embodiment is a composition, there is an arbitrary ratio among the components.

specific Embodiment approach 3

[0031] Specific embodiment three: This embodiment is different from one of specific embodiments one or two in that the intumescent flame retardant is intumescent flame retardant IFR-P500, intumescent flame retardant IFR-P601, intumescent flame retardant One or a combination of combustible agent IFR-P602, intumescent flame retardant IFR-P603, intumescent flame retardant IFR-T800 and intumescent flame retardant IFR-MT800. Others are different from the first or second embodiment.

[0032] When the intumescent flame retardant described in this embodiment is a composition, there is an arbitrary ratio among the components.

[0033] The intumescent flame retardant IFR-P500, the intumescent flame retardant IFR-P601, the intumescent flame retardant IFR-P602, the intumescent flame retardant IFR-P603, the intumescent flame retardant IFR- T800 and intumescent flame retardant IFR-MT800 are manufactured by Heilongjiang Runte Technology Co., Ltd.

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Abstract

The invention relates to a sheath material and a preparation method thereof and provides a microwave induced intumescent flame-retardant silane crosslinked polyolefin sheath material for cables and a preparation method thereof for solving such technical problems in the existing preparation method of flame-retardant silane crosslinked sheath materials as long-time boiling with water is required, the stability and flame retardant effect of the product are poor. The material is prepared from a polyolefin resin, an intumescent flame retardant, a silane coupling agent, a microwave absorbent, a water bringing agent, a polyfunctional group crosslinking agent, a crosslinking accelerant and an antioxidant. The preparation method comprises the steps of carrying out melt mixing on the polyolefin resin, the intumescent flame retardant, the silane coupling agent, the microwave absorbent, the water bringing agent, the polyfunctional group crosslinking agent, the crosslinking accelerant and the antioxidant, carrying out granulation and tabletting, then carrying out microwave induced crosslinking and putting the product at room temperature, thus preparing the material. The mechanical property of the material prepared by the preparation method is obviously increased, the tensile strength is improved by nearly 20% and the oxygen index is improved by more than 70%. The material and the preparation method belong to the field of preparation of polyolefin sheath materials.

Description

Technical field [0001] The invention relates to a sheath material and a preparation method thereof. Background technique [0002] Flame-retardant polyolefin materials have been widely used in electronics and electrical appliances due to their excellent properties in many aspects such as high tensile strength, good impact toughness, wear resistance, self-lubricity, good electrical properties, excellent processability and flame retardancy. , Automobiles, machinery manufacturing, chemicals, food, daily necessities, medical and health and other fields. However, in the application field of cable materials, the performance of flame-retardant polyolefin materials cannot fully meet the requirements of practical applications. For example, the strength, heat distortion temperature and solvent resistance of ordinary polyolefin materials cannot meet the requirements under certain special conditions of use. For the above shortcomings of flame retardant polyolefin materials, crosslinking is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K13/02C08K3/04C08K3/22C08K3/38C08K3/30C08J3/28C08J3/24H01B3/44H01B7/295
Inventor 刘岩高广刚鲍文波祁鑫董继光张贵
Owner HONGLONGJIANG ORIENT SCI & TECH
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