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Polyolefin cable material and its preparation method and application

A polyolefin cable material and ethylene technology, applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problem that the tearing force cannot meet the requirements, and achieve the effect of excellent flame retardancy

Active Publication Date: 2021-01-12
ZHEJIANG WANMA MACROMOLECULE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tearing force of the butterfly cable body with high flame retardancy requirements on the market cannot meet the requirements

Method used

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  • Polyolefin cable material and its preparation method and application
  • Polyolefin cable material and its preparation method and application
  • Polyolefin cable material and its preparation method and application

Examples

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preparation example Construction

[0055] The present invention also provides a method for preparing the polyolefin cable material according to the present invention, which includes the step of mixing the components of the polyolefin cable pellets.

[0056] According to the preparation method of polyolefin cable material of the present invention, comprises the following steps:

[0057] (1) Premix and disperse part (for example: 10-30% of the total mass of ethylene-vinyl acetate copolymer) of ethylene-vinyl acetate copolymer with thermoplastic polyurethane and phosphorus nitrogen flame retardant to obtain the premixed masterbatch material;

[0058] (2) Mix the premixed masterbatch with the remaining (for example: 70-90% of the total mass of ethylene-vinyl acetate copolymer) ethylene-vinyl acetate copolymer, interfacial compatibilizer, aluminum hydroxide, lubricating Agents and antioxidants are blended and granulated to obtain polyolefin cable materials.

[0059] Because the thermoplastic polyurethane of the pr...

Embodiment 1-5

[0073] According to the mass parts of each component in the following Table 1, the polyolefin cable materials of Examples 1-5 were prepared according to the following preparation methods.

[0074] (1) 20% ethylene-vinyl acetate copolymer (based on the total mass of ethylene-vinyl acetate copolymer) and polyether type TPU and phosphorus nitrogen flame retardant in the formula are produced in automatic metering two-stage equipment Obtain a premixed masterbatch, wherein the extrusion temperature range is 125-155°C;

[0075] (2) Mix the premixed masterbatch with the remaining 80% ethylene-vinyl acetate copolymer (based on the total mass of ethylene-vinyl acetate copolymer), interfacial compatibilizer, aluminum hydroxide, lubricant and antioxidant The agent is mixed in an internal mixer to 150°C, then granulated by a screw machine, and the processing temperature range is 125-155°C to obtain a polyolefin cable material.

[0076] Table 1

[0077]

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Abstract

The invention provides a polyolefin cable material as well as a preparation method and application thereof. The polyolefin cable material comprises: (a) 100 parts by mass of matrix resin, wherein thematrix resin comprises 40 to 80 (preferably, 60 to 80) parts by mass of ethylene-vinyl acetate copolymer, 10 to 30 (preferably, 15 to 25) parts by mass of thermoplastic polyurethane and 10 to 30 (preferably, 15 to 25) parts by mass of interfacial compatibilizer; (b) 80 to 200 (preferably, 130 to 180) parts by mass of a flame retardant, wherein the flame retardant comprises 50 to 150 (preferably, 130 to 150) parts by mass of aluminum hydroxide and 15 to 40 (preferably, 20 to 30) parts by mass of phosphorus nitrogen flame retardant; (c) 0 to 4 (preferably, 2 to 4) parts by mass of lubricating agent; (d) 0.5 to 2.5 parts by mass of antioxidant. The polyolefin cable material provided by the invention can meet various performance requirements in YD / T1113-2001 and has excellent flame resistance.Furthermore, in a cable prepared from the cable material, the cable body can meet the single cable vertical combustion test requirement and also can meet the tear tension requirement.

Description

technical field [0001] The invention relates to a polyolefin cable material and its preparation method and application, belonging to the field of insulating materials. Background technique [0002] In recent years, the country has attached great importance to environmental protection and safety. In some large buildings or public places, such as large shopping malls, residences, stations, high-rise buildings and other densely populated public places, low-smoke halogen-free flame-retardant cables are required. [0003] At present, low-smoke halogen-free polyolefin materials mostly use polyethylene and EVA base materials to add flame retardants such as magnesium hydroxide to achieve a balance between performance and flame retardant effect. The smaller the wire diameter of the cable body prepared from this material, the more difficult it is for a single cable to burn through vertically. For butterfly cables, if a single cable is to be burned vertically, a higher proportion of f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L75/04C08L51/06C08K13/02C08K3/22C08K5/00H01B3/44
CPCC08K2003/2227C08L23/0853C08L2201/02C08L2203/202C08L2205/03H01B3/44C08L75/04C08L51/06C08K13/02C08K3/22C08K5/0066
Inventor 金曙霖任政李鹏举陆凯黄体耀
Owner ZHEJIANG WANMA MACROMOLECULE MATERIAL