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Flame-retardant low dielectric constant polypropylene material, and preparation method and application

A polypropylene material, low dielectric technology, applied in the field of polypropylene material and its preparation, can solve the problem that the dielectric properties, flame retardant properties, insulation properties and aging properties of insulating materials cannot meet the requirements of automotive Ethernet wires for insulating materials, etc. problem, to achieve the effect of good processing performance, improved dispersion and excellent performance

Pending Publication Date: 2019-06-21
HARBIN UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the dielectric properties, flame retardant properties, insulating properties and aging properties of insulating materials prepared by existing methods cannot meet the requirements of automotive Ethernet wires for insulating materials, and to provide a flame retardant low dielectric material. Electric polypropylene material, preparation method and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0024] Specific implementation mode 1: This implementation mode is a flame-retardant low-dielectric polypropylene material composed of 22-55 parts of polypropylene resin, 5-25 parts of modified resin, and 20-35 parts of composite flame-retardant Agent, 1-10 parts of low dielectric filler, 0.01-1.0 parts of silane coupling agent, 0.001-0.05 parts of organic peroxide, 0.3-1.5 parts of composite antioxidant and 0.5-2.5 parts of composite processing aid made.

specific Embodiment approach 2

[0025] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the polypropylene resin is one or a blend of homopolymerized polypropylene resin and copolymerized polypropylene resin, and the melt index is 1.0~5.0g / 10min (230°C, 2.16kg). Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0026] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the modified resin is a blend of one or two of the compatible modified resin and the toughened modified resin The compatibility modified resin is one or more of ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate copolymer, ethylene-octene copolymer and ethylene-vinyl acetate copolymer The blend; the mass fraction of ethyl acrylate in the ethylene-ethyl acrylate copolymer is 15% to 30%, and the melt index is 0.5 to 3.0g / 10min (190°C, 2.16kg); the ethylene - the mass fraction of butyl acrylate in the butyl acrylate copolymer is 15% to 30%, and the melt index is 0.5 to 3.0g / 10min (190°C, 2.16kg); vinyl acetate in the ethylene-vinyl acetate copolymer The mass fraction of the ester is 14%-28%; the toughening modified resin is one or a mixture of ethylene-octene copolymer and ethylene-butene copolymer, and the melt index is 0.5-2.0g / 10min (190°C, 2.16kg). Other steps are the same as ...

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Abstract

The invention discloses a flame-retardant low dielectric constant polypropylene material, and a preparation method and an application and relates to a polypropylene material and a preparation method of the polypropylene material. The polypropylene material aims at solving problems that dielectric properties, flame resistance, insulating properties and aging resistance of an insulating material prepared by the existing method cannot meet requirements of vehicle-mounted Ethernet wires on the insulating material. The flame-retardant low dielectric constant polypropylene material is prepared frompolypropylene resin, modified resin, composite fire retardant, low dielectric constant filling, a silane coupling agent, organic peroxide, a composite antioxidant and a composite processing aid. The method comprises the steps of: I, material weighing, II, preparation of the flame-retardant low dielectric constant functional filling, III, preparation of a functional master batch, and IV, mixing ofthe functional master batch and the polypropylene resin, and extrusion and forming to form the flame-retardant low dielectric constant polypropylene insulating material. The flame-retardant low dielectric constant polypropylene material is used for manufacturing the vehicle-mounted Ethernet wires. The flame-retardant low dielectric constant polypropylene material can be obtained.

Description

technical field [0001] The invention relates to a polypropylene material and a preparation method thereof. [0002] technical background [0003] The key to the manufacturing technology of automotive Ethernet wires lies in the performance of insulating materials and the stranding process of wires, so that automotive Ethernet can meet the requirements of automotive EMC. In the prior art, polyvinyl chloride (PVC) materials and cross-linked polyethylene (XLPE) materials are mostly used as automotive cable materials that meet the temperature rating of 100°C. The advantage of PVC material is that it has excellent flame retardancy and processing performance, and its price is low. The disadvantage is that it has great environmental hazards in the process of processing, use and disposal. XLPE material is environmentally friendly, but the material cannot be reused after cross-linking, and there are great limitations due to high processing costs and high dielectric constant. Polyprop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08L23/06C08K5/03C08K3/22C08K5/526C08K5/134C08K7/28C08K13/04
Inventor 陈岭峰韩志东谢骋孙竞黄凯兵仇宗来
Owner HARBIN UNIV OF SCI & TECH
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