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LCP composite film suitable for high frequency and high speed and preparation method thereof

A composite film, high-speed technology, applied in the direction of chemical instruments and methods, synthetic resin layered products, lamination, etc., can solve the problems of poor structural characteristics, high-frequency transmission loss, large hygroscopicity, etc., to improve the strength and modulus , excellent insulation performance, and the effect of improving the bonding strength

Active Publication Date: 2021-07-13
宁波聚嘉新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the mainstream antenna base material is mainly polyimide (Polyimide, PI), but due to the large dielectric constant and loss factor of the PI base material, high moisture absorption, and poor reliability, the high-frequency transmission loss is serious, The structural characteristics are poor, and it is difficult to meet the needs of 5G high-frequency and high-speed signal transmission
Modified polyimide (Modified PI, MPI) can meet the application requirements in the frequency range below 15GHz, but with the gradual application of higher frequency millimeter wave bands, the transmission of MPI will also be limited. In multilayer board design Insufficiencies in aspects will gradually become apparent

Method used

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  • LCP composite film suitable for high frequency and high speed and preparation method thereof
  • LCP composite film suitable for high frequency and high speed and preparation method thereof
  • LCP composite film suitable for high frequency and high speed and preparation method thereof

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specific Embodiment approach 1

[0018] Specific implementation mode one: combine figure 1 , the present embodiment is an LCP composite film suitable for high frequency and high speed, characterized in that the LCP composite film suitable for high frequency and high speed includes TLCP layer (1), TLCP-plastic composite layer (2) and base (3);

[0019] The TLCP layer (1) contains TLCP and polytetrafluoroethylene, and the mass fraction of polytetrafluoroethylene is 15-30%, and the balance is TLCP;

[0020] The TLCP-plastic composite layer (2) contains TLCP fiber, PET and polytetrafluoroethylene, and the mass fraction of TLCP fiber is 10-20%, the mass fraction of PET is 20-30%, and the balance is polytetrafluoroethylene vinyl.

[0021] The tensile strength of the TLCP fiber in this embodiment exceeds 18cN / dtex, and the tensile strength of plastic products can be greatly improved by using the TLCP fiber as a skeleton.

[0022] In this embodiment, PET is polyethylene terephthalate, which has good electrical ins...

specific Embodiment approach 2

[0023] Specific implementation mode two: combination figure 1 , the difference between this embodiment and the specific embodiment one is: the TLCP fiber is one or two layers in the TLCP-plastic composite layer (2); when the TLCP fiber is one layer, the TLCP-plastic composite layer (2) The mass fraction of TLCP fibers in the middle is 10-15%, and the TLCP fibers are arranged longitudinally; when the TLCP fibers are two layers, the mass fraction of TLCP fibers in the TLCP-plastic composite layer (2) is 15-20%, and the same layer The TLCP fibers are arranged in the same direction, and the TLCP fibers in two adjacent layers are arranged in a cross. Others are the same as the first embodiment.

specific Embodiment approach 3

[0024] Specific implementation mode three: combination figure 1 The difference between this embodiment and the first or second embodiment is that the TLCP is a copolyester of p-hydroxybenzoic acid and 2-hydroxy-6-naphthoic acid. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to an LCP composite film suitable for high frequency and high speed and a preparation method thereof. The composite film sequentially comprises a TLCP layer, a TLCP-plastic composite layer and a base layer from top to bottom. The method comprises the following steps: 1, preparing a TLCP single-layer film; 2, preparing a TLCP-plastic composite layer; and 3, preparing a base layer to obtain the LCP composite film suitable for high frequency and high speed. The composite film has low dielectric constant and dielectric loss, greatly reduces high-frequency and high-speed signal transmission loss, and has wide 5G application market space.

Description

technical field [0001] The invention relates to an LCP composite film suitable for high frequency and high speed and a preparation method thereof. Background technique [0002] With the advent of the 5G era, optoelectronics, aerospace, national defense and mobile communications have put forward higher requirements for high-frequency and high-speed transmission, as well as materials for hardware carriers such as application-side mobile phones, base stations, Internet of Things, and automobiles, as well as new chemical materials. stricter requirements. Antennas are an indispensable part of wireless communication. Under the trend of 5G high frequency, high speed and miniaturization, antenna technology has more stringent requirements on materials. On the one hand, it needs to meet the special requirements of millimeter waves for antenna materials. Minimize the space occupied by the antenna. At present, the mainstream antenna base material is mainly polyimide (Polyimide, PI), b...

Claims

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Application Information

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IPC IPC(8): B32B33/00B32B27/32B32B27/06B32B27/12B32B5/02B32B27/36B32B27/20B32B37/06B32B37/10C08L27/18C08L67/04C08L67/02C08K7/28
CPCB32B33/00B32B27/322B32B27/06B32B27/12B32B5/02B32B27/36B32B27/20B32B37/06B32B37/10C08L27/18C08L67/04B32B2307/206C08L2205/03C08L2205/16C08L2205/02C08L67/02C08K7/28
Inventor 王阳任忠平孙志忠
Owner 宁波聚嘉新材料科技有限公司
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