High-dielectric low-loss resin-based nanocomposites for x-band and methods thereof

Abstract

The invention discloses a high-dielectric and low-loss resin-based nanocomposite material used in the X-band and a method thereof. One of the preparation methods of the material is: hydrogen peroxide is used to hydroxylate the surface of the dielectric ceramic, and the hydroxylated ceramic Disperse in Tris-HCl buffer solution, add dopamine hydrochloride, make the hydroxylated ceramic surface form a polydopamine shell layer through in-situ polymerization reaction, use silver nitrate aqueous solution and ammonia water to make the dopamine-coated ceramic surface modified with nano-silver particles, and Acetone is used as a solvent to mix and dissolve the core-shell-satellite multi-level structure dielectric ceramic modified by nano-silver particles and thermosetting resin, and the composite material is obtained after removing acetone and gas. The invention improves its dielectric constant in the X-band (ε>8.6@10GHz), and at the same time better suppresses the dielectric loss (tanσ<0.04@10GHz), which is the design of high-frequency, high-dielectric and low-loss nanocomposite materials Provided new ideas.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to a high-dielectric and low-loss resin-based nanocomposite material for X-band and a method thereof. Background technique [0002] The rapid development of micro-satellite and mobile communication technology makes the miniaturization of microwave components and microwave modules more and more important, and microwave dielectric antenna, as one of the most important microwave front-end devices, its miniaturization is very important for the whole microwave circuit system. Miniaturization plays a key role, and the easiest way to achieve its miniaturization is to use high-dielectric and low-loss microwave substrate materials, and resin-based ceramic composite materials are the most important one. [0003] Resin-based composite materials with nano-dielectric ceramics as the additive phase are widely used in the dielectric and microwave fields due to their combination of high dielectric ...

AI Technical Summary

Problems solved by technology

Wu Peixuan and others provided a preparation method for preparing high-dielectric and low-loss ceramic-polymer composites through coupling agent modification (patent application number CN201510367647.2). The improvement of the dielectric properties of composite materials is very limited, and the dielectric loss is still relatively high. Therefore, how to further improve the dielectric constant of the material and reduce the dielectric loss through the multi-level design of the composite material interface is an urgent problem to be solved. question

Zhang Zidong et al. provided a high-dielectric and low-loss composite material of APU (polymethyl acrylate)-Al (patent application patent number CN201810931063.7), but it only achieved high dielectric strength in the lower frequency band from 10 MHz to 1GHz. Low electrical loss, which cannot meet the requirements of the growing communication technology for the dielectric properties of materials in higher frequency bands

Images