Unlock instant, AI-driven research and patent intelligence for your innovation.

Polymer matrix composite dielectric material and preparation method thereof

A composite material and polymer technology, which is applied in the field of composite dielectric film preparation, can solve the problems of polymer flexibility and processability, and achieve the effects of increasing dielectric constant, promoting polarity, and excellent mechanical properties

Active Publication Date: 2020-12-29
深圳市峰泳科技有限公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flexibility and processability of the polymer suffers when a large amount of inorganic materials are added

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] The invention provides a method for preparing a high dielectric constant polymer-based dielectric composite material, comprising the following steps: uniformly mixing and dispersing an epoxy resin prepolymer, a curing agent, a catalyst, a solvent and an inorganic filler by a solution blending method, Forming an organic-inorganic composite slurry, the epoxy resin prepolymer has a polar group; coating the organic-inorganic composite slurry on a substrate; and heating and curing to obtain the high dielectric constant polymer base Dielectric composites.

[0019] In one embodiment of the present invention, the solution blending method is specifically as follows: First, based on the total weight of the organic-inorganic composite slurry to be formed, 25 to 35 wt% of epoxy resin prepolymer, 4 ~10wt% of curing agent and 0.15-0.3wt% of catalyst are added to 8~10wt% of the first solvent, and ultrasonically stirred at a temperature of 40~60°C for 30~40 minutes to obtain an organic...

Embodiment 1

[0034] The mark produced by Wuhan Ruifuyang Chemical Co., Ltd. is 21.3g of hydantoin epoxy resin MHR-018, the polyetheramine 18.5g of D2000 produced by U.S. Huntsman (Hunstman), DBU (diazabicyclo , also known as 1,8-diazabicycloundec-7-ene) curing agent 0.2g was added to 12.2g pentanone solvent, stirred and ultrasonicated at a temperature of 40°C for 30 minutes to obtain an organic prepolymer solution.

[0035] 55 g of inorganic filler barium titanate were dispersed in 16.5 g of pentanone solvent by ultrasonic stirring to obtain an inorganic suspension. The particle size of the inorganic filler barium titanate was nano-scale, purchased from Guangzhou Hongwu Material Technology Co., Ltd., particle size D 50 = between 0.1-1 μm.

[0036] Then the inorganic suspension is mixed with the above-mentioned organic prepolymer solution, and stirred uniformly by ultrasonic stirring to obtain a blended solution. The blended solution was poured into a ball mill jar and ball milled at a spe...

Embodiment 2

[0040] Add 25g of hydroxymethyl bisphenol A resin, 34.7g of phthalazinone, and 0.3g of cobalt acetylacetonate catalyst produced by Wuhan Yuancheng Gongchuang Nanjian Technology Co., Ltd. into 10g of methyl ethyl ketone solvent. Stir and sonicate for 30 minutes to obtain an organic prepolymer solution.

[0041] Ultrasonic stirring was used to disperse 60 g of the inorganic filler barium strontium titanate in 28 g of butyl acetate solvent to obtain an inorganic suspension. The inorganic filler barium strontium titanate is a nano-powder with a particle size of 20-500nm. Its preparation method is to first prepare a titanium-citric acid-ethylene glycol solution, and then add BaCO 3 , SrCO 3 Add the above solution to obtain a stable strontium barium titanate sol; then dry the strontium barium titanate sol at 80-120°C to form a xerogel; then heat treat at 600-800°C to obtain barium strontium titanate nanopowder .

[0042] Then the inorganic suspension is mixed with the above-menti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a polymer matrix composite dielectric material and a preparation method thereof. According to the method, organic-inorganic composite slurry is prepared by using a solution blending method, the organic phase in the slurry is an epoxy resin prepolymer which has polar groups in self, and due to selection of a catalyst, generation of hydroxyl in the curing process can be promoted, and thus the dielectric constant of an epoxy resin is increased to 5 or greater. Compared with the prior art, the prepared polymer matrix composite dielectric material has a same dielectric constant by only adding a small amount of inorganic filler.

Description

technical field [0001] The invention belongs to the field of composite dielectric film preparation, in particular to a high dielectric constant polymer-based composite dielectric material and a preparation method thereof. Background technique [0002] Polymer-based composite dielectric materials with high dielectric constant, low dielectric loss, and easy processing have gradually developed into an important dielectric material in energy storage devices due to their good flexibility, ability to store charges, and uniform electric field. electrical material. [0003] However, since the dielectric constant of the polymer matrix is ​​usually not high, for example, the dielectric constant of common polymers is between 3 and 6, it is impossible to prepare components with high energy storage density. In order to increase the dielectric constant of polymers, an effective method is to add inorganic fillers with high dielectric constants to polymers, and increase the dielectric cons...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08J3/215C08L63/00C08K3/24C08G59/68C08G59/70C08G59/62C08G59/50
CPCC08G59/5073C08G59/508C08G59/623C08G59/686C08G59/70C08J3/215C08J5/18C08J2363/00C08K3/24C08K2201/011
Inventor 李峰刘侠侠陶玉红李露卢星华袁启斌
Owner 深圳市峰泳科技有限公司