Thermoplastic crack resistant type low smoke zero halogen flame-retardant polyolefin cable sheath material and preparation method thereof

A cable sheath material and anti-cracking technology, applied in the direction of insulating cables, plastic/resin/wax insulators, cables, etc., can solve the problem of easy cracking of thermoplastic low-smoke halogen-free flame-retardant sheath materials, and achieve easy recycling , Good processing effect

Inactive Publication Date: 2011-04-20
山东安澜电力科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an anti-cracking low-smoke, halogen-free, flame-retardant polyolefin cable sheathing m

Method used

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  • Thermoplastic crack resistant type low smoke zero halogen flame-retardant polyolefin cable sheath material and preparation method thereof
  • Thermoplastic crack resistant type low smoke zero halogen flame-retardant polyolefin cable sheath material and preparation method thereof
  • Thermoplastic crack resistant type low smoke zero halogen flame-retardant polyolefin cable sheath material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Example 1: The polyolefin blend is a blend system of EVA and VLDPE in a ratio (by weight) of 8:2 as a matrix resin. MDH is used as the inorganic flame retardant, and a silane coupling agent (accounting for 1% of the amount of MDH) is used for surface modification. The polymer compatibilizer adopts EVA-g (ethylene-vinyl acetate grafted maleic anhydride). The mass composition of the multifunctional modifier is: 25% of silicone rubber, 23% of ethylene-vinyl acetate copolymer, 22% of silicon dioxide, 10% of magnesium oxide, and 20% of calcium stearate. Antioxidant adopts compound antioxidant B215. The processing aid adopts zinc stearate.

Embodiment 2

[0025] Embodiment 2: The polyolefin blend is a blend system of EVA and VLDPE in a ratio of 8:2 as the matrix resin. MDH is used as the inorganic flame retardant, and a silane coupling agent (accounting for 1% of the amount of MDH) is used for surface modification. The polymer compatibilizer adopts EVA-g (ethylene-vinyl acetate grafted maleic anhydride). The specific composition of the multifunctional modifier is: 22% of silicone rubber, 25% of ethylene-vinyl acetate copolymer, 25% of silicon dioxide, 8% of magnesium oxide, and 20% of zinc stearate. Antioxidant uses antioxidant (1010). The processing aid uses polymer wax.

Embodiment 3

[0026] Example 3: The polyolefin blend is a blend system of EVA and LLDPE at a ratio of 9:1 as a matrix resin. LDHS is used as the inorganic flame retardant, and stearic acid (accounting for 1.5% of the amount of LDHS) is used for surface modification. Polyethylene grafted maleic anhydride is used as polymer compatibilizer. The specific composition of the multifunctional modifier is: 20% of silicone rubber, 25% of ethylene-vinyl acetate copolymer, 25% of silicon dioxide, 10% of zinc oxide, and 20% of zinc stearate. Antioxidant uses antioxidant (1010). The processing aid uses polymer wax.

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Abstract

The invention discloses a thermoplastic crack resistant type low smoke zero halogen flame-retardant polyolefin cable sheath material and a preparation method thereof. The cable sheath material comprises the following components in part by weight: 100 parts of polyolefin blend matrix resin, 90 to 150 parts of inorganic flame retardant subjected to surface modification, 10 to 20 parts of high molecular compatilizer, 3 to 20 parts of multifunctional modifier, 1 to 1.5 parts of antioxidant and 1 to 2 parts of processing aid. The preparation method of the cable material comprises the following steps of: blending and extruding polyene resin; performing surface treatment on the inorganic flame retardant; preparing materials; mixing; extruding; granulating and the like. Compared with the prior art, the invention has the advantages that: the cable sheath material has crack resistance, high flame retardancy and high processability, is environmentally friendly, is easy to recycle and the like.

Description

technical field [0001] The invention relates to a thermoplastic anti-cracking low-smoke halogen-free flame-retardant polyolefin cable sheath material and a preparation method thereof. Background technique [0002] Low-smoke halogen-free flame-retardant polyolefin cable sheathing material is an environmentally friendly product. The development of such high-performance flame-retardant materials is an important topic and a difficulty in flame-retardant technology, because the flame-retardant system generally uses hydrated inorganic fillers As a flame retardant, although this type of flame retardant is non-toxic and low-smoke, its flame-retardant efficiency is low. To meet the flame-retardant requirements, its filling amount needs to be more than 50%, which brings great impact on the physical and mechanical properties and processing properties of composite materials. huge impact. Because as the filling amount increases, the continuity between the polymer molecular chains is sep...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08L51/06C08L83/04C08K9/06C08K9/04C08K3/22C08K3/34C08K3/36C08K5/098C08K5/103C08K5/375C08L91/06C08K5/20H01B3/44H01B7/295
Inventor 谢大荣李秀峰徐曼曲铁骑曹晓珑咸日常李作强
Owner 山东安澜电力科技有限公司
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