US 11,987,014 B2Granted

Resin-based composite material of three-layer structure and use thereof

AssigneeSoochow University

InventorsAijuan Gu, Guozheng Liang, Li Yuan

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Abstract

This invention disclosed a resin-based composite material has a three-layer structure and the application thereof. According to the invention, an oriented carbon nanotube bundle/epoxy resin composite material (denoted as layer B) is prepared with the microwave curing method, a barium titanate nanofiber/epoxy resin composite material (denoted as layer E) is prepared by means of a blade coating-heat curing method, and a composite material of a B-E-B three layer structural is formed by means of a layer-by-layer curing technology. Compared to the composite material of the conductor-insulating layer/polymer layer structural prepared in the prior art, the resin-based composite material has a three-layer structure provided by the invention has with high energy storage density, and low dielectric loss and high permittivity; and the preparation process therefor is controllable and easy to operate, short in production cycle, and suitable for large-scale application.

Claims9

Dependent claims

A method for preparing a resin-based composite material having a three-layer structure, comprising the following steps:

(1) mixing a curable resin system with aligned carbon nanotubes to obtain an aligned carbon nanotubes prepolymer, dividing the aligned carbon nanotubes prepolymer into a first prepolymer and a second prepolymer, precuring the first prepolymer to obtain a pre-cured aligned carbon nanotube sheet;
(2) mixing the curable resin system with polydopamine-coated barium titanate nanofibers to obtain a barium titanate nanofiber prepolymer, curing the barium titanate nanofiber prepolymer to obtain a pre-cured barium titanate nanofiber sheet;
and
(3) soaking the pre-cured barium titanate nanofiber sheet in the second prepolymer, laying flat the soaked pre-cured barium titanate nanofiber sheet on the pre-cured aligned carbon nanotube sheet, pouring the second prepolymer on the soaked pre-cured barium titanate nanofiber sheet, and then curing to obtain the resin-based composite material having a three-layer structure.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 17/423,257Filed 15 Jan 2019
Published: US 2022/0072817 A110 Mar 2022
Granted: 21 May 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification25 codes

B29C 70/62
Comprising fillers only , e.g. particles, powder, beads, flakes, spheres: the filler being oriented during moulding
B29C 35/0805
By wave energy or particle radiation: using electromagnetic radiation
B29C 70/003
Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts: characterised by the matrix…
B29C 70/021
Comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers,…:…