Asymmetrical layer-shaped resin matrix composite material and preparation method thereof

Abstract

The invention discloses asymmetrical layer-shaped resin matrix composite material and a preparation method of the asymmetrical layer-shaped resin matrix composite material. The preparation method comprises the following steps: counted by weight, mixing 100 parts of thermocuring resin with 0.1-1.0 part of carbon nano tube; carrying out curing and after-treatment according to curing and after-treatment technology conditions of thermocuring resin so as to obtain carbon nano tube / thermosetting resin composite material layer; after carrying out a low-temperature plasma treatment, and coating 2-20 parts of molten thermoplastic polymer on one surface of the carbon nano tube / thermosetting resin composite material layer evenly so as to obtain the asymmetrical layer-shaped resin matrix composite material, wherein one layer is a thermoplastic polymer layer, and the other layer is the carbon nano tube / thermosetting resin composite material layer. Composite material prepared by the method provided by the invention is characterized by high dielectric constant and low dielectric loss, simple and easy preparation technology, and is suitable for large-scale application.

Description

technical field [0001] The invention relates to a resin-based composite material with low dielectric loss and high dielectric constant and its preparation method, in particular to a resin-based composite material with an asymmetric layered structure and its preparation method, which belongs to the dielectric function Composite technology field. Background technique [0002] As Gordon Moore's Law predicts, the number of transistors that can fit on an integrated circuit will double approximately every 18 months, and performance will double. The exponential improvement in the performance of electronic products is closely related to high dielectric constant materials. Capacitors made of high dielectric constant can store more capacitance, so compared with lower dielectric constant materials, in the same volume It can store more information, and further realize the low cost, high efficiency and portability of electronic products. In addition, in the field of electrical engineer...

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Problems solved by technology

Before the present invention was made, literature (see: Hongyi Wu, Guozheng Liang, Aijuan Gu, Li Yuan. J. Mater. Chem. 2011, 21, 14838-14848) reported that the gradient distribution of carbon nanotubes was used to obtain both high The method of composite materials with dielectric constant and low dielectric loss; however, its preparation process is difficult to control, especially in large-scale applications.

Also use literature (see: L L Sun, B Li, Y Zhao, G Mitchell, W H Zhong. Nanotechnology.2011, 21, 305702) to disclose the technical scheme of preparing "sandwich" polyvinylidene fluoride / carbon nanofiber composites , while ensuring a high dielectric constant, the dielectric loss of the material is greatly reduced; however, thermoplastic polymers such as polyvinylidene fluoride and polymethyl methacrylate have the characteristics of heating and softening, and the layer and layer in the preparation process They will penetrate each other, which not only makes it difficult to control the thickness of each phase, but also easily causes the disappearance of the intermediate insulating layer, causing a sudden increase in dielectric loss, which makes it difficult to control the dielectric constant and dielectric loss.

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