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Low-density, low-dielectric-constant and high-weather-resistance polypropylene material and preparation method thereof

A low dielectric constant and polypropylene material technology, applied in the field of polymer material modification, can solve the problems of low density and low dielectric constant, and achieve the effect of low density, low dielectric constant and enhanced binding force

Inactive Publication Date: 2021-12-10
SHANGHAI PRET COMPOSITES +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to overcome the problems existing in the existing low dielectric constant polypropylene material, the object of the present invention is to provide a polypropylene material with low density, low dielectric constant and high weather resistance, which can be used for 5G base station radome and other similar components

Method used

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  • Low-density, low-dielectric-constant and high-weather-resistance polypropylene material and preparation method thereof
  • Low-density, low-dielectric-constant and high-weather-resistance polypropylene material and preparation method thereof
  • Low-density, low-dielectric-constant and high-weather-resistance polypropylene material and preparation method thereof

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the embodiments. The scope of the present invention is not limited by these examples, but is set forth in the claims.

[0030] In the material formulations of the examples and comparative examples, the polypropylene used is polypropylene produced by SK Company, trade name BX3900, and its melt flow rate is 60g / 10min (test condition: 230°C×2.16kg). The high-strength polyethylene fiber is ZTX-99 produced by Hunan Zhongtai Special Equipment Co., Ltd., its fiber monofilament fineness is 2.5 denier, and its dielectric constant is 2.2. The glass fiber is an alkali-free glass fiber with a diameter of 12 microns, and its dielectric constant is 6.5. The coupling agent is silane coupling agent KH550, which is commercially available. The light stabilizer is selected from Mingzhi titanium rutile titanium dioxide MZT-R1, and its particle size is about 15nm. The antioxidant is the composition of 101...

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Abstract

The invention discloses a low-density, low-dielectric-constant and high-weather-resistance polypropylene material and a preparation method thereof. The material is prepared from the following raw materials in percentage by weight: 65-88% of polypropylene, 10-30% of high-strength polyethylene fibers, 1-3% of a coupling agent, 0.5-1% of a light stabilizer, 0.3-0.6% of an antioxidant and 0.2-0.4% of a lubricant. As the high-strength polyethylene fibers with an ultra-low dielectric constant instead of glass fibers are adopted as a reinforcing agent, the density of the polypropylene material is greatly reduced, meanwhile, the dielectric constant of the material is remarkably reduced, and the requirement that the dielectric constant is smaller than or equal to 3 for a 5G communication material in the industry can be met. Through the synergistic effect of a coupling agent and rutile type titanium dioxide, the prepared polypropylene material has the characteristics of low density, low dielectric constant, high weather resistance and the like, can be widely applied to the field of 5G communication, and is particularly suitable for parts such as a 5G base station antenna housing.

Description

technical field [0001] The invention belongs to the technical field of polymer material modification, and in particular relates to a low-density, low-dielectric constant, high-weather-resistant polypropylene material and a preparation method thereof. Background technique [0002] With the development of 5G high-frequency communication technology, low dielectric constant materials have received more and more attention. The dielectric constant has a huge impact on the transmission speed and signal loss of 5G communication millimeter wave signals. Among them, the 5G radome, which is critical to signal transmission, is used to protect the antenna system from the external environment. Therefore, the material used for the radome not only requires excellent mechanical strength, but also requires low dielectric properties and excellent weather resistance. [0003] Polypropylene resin is a non-polar material with low polarizability, and its dielectric constant is between 2.2 and 2.6...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08K3/22C08K5/544C08K5/134C08K5/526C08K13/02
CPCC08L23/12C08K2201/011C08K2003/2241C08L2201/08C08L2205/20C08L2205/16C08L23/06C08K3/22C08K5/544C08K5/134C08K5/526C08K13/02
Inventor 陈通华林小群张锴蔡青周文
Owner SHANGHAI PRET COMPOSITES
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