A kind of barium titanate/polyetherimide dielectric composite material and preparation method thereof
A technology based on polyetherimide and polyetherimide, which is applied in the field of preparation of dielectric composite materials, can solve the problems of insignificant increase in the dielectric constant of composite materials, increase in material loss, and decrease in breakdown strength. The effect of improved dielectric properties, high dielectric constant, and excellent dielectric properties
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0044] A kind of preparation method of barium titanate / polyetherimide dielectric composite material of the present invention specifically comprises the following steps:
[0045] The first step, the steps of cleaning foamed nickel:
[0046] Trim the nickel foam into a block with an area of 2cm*2cm. Put nickel foam into a beaker and add acetone (the solution is completely submerged in nickel foam), and ultrasonically clean for 20-40 minutes; pour off the acetone solution and add deionized water for ultrasonication for 10-20 minutes; finally add absolute ethanol for ultrasonication for 10-20 minutes.
[0047] Second step, the step of preparing foamed nickel / barium titanate composite material:
[0048] Add barium titanate powder and polyethyleneimine to a beaker, and then add isopropanol. Stir at room temperature for 3 to 5 hours, then sonicate for 20 to 40 minutes to obtain a uniformly dispersed barium titanate solution;
[0049] Electrophoretic deposition was carried out us...
Embodiment 1
[0057] In this example, a single-layer dielectric composite material was prepared. The specific steps are:
[0058] 1) Foamed nickel pretreatment: Trim the foamed nickel into a block with an area of 2cm*2cm. Put nickel foam into a beaker and add acetone (the solution is completely submerged in nickel foam), and ultrasonically clean for 40 minutes; pour off the acetone solution and add deionized water for ultrasonication for 20 minutes; finally add absolute ethanol for ultrasonication for 20 minutes.
[0059] 2) Electrophoretic deposition: Add 0.8g of barium titanate powder and 0.6796g of polyethyleneimine into a beaker, add 50ml of isopropanol, stir at room temperature for 4h, then ultrasonic for 20min; deposit under DC power, two The platinum sheet was used as the positive electrode, the nickel foam was used as the negative electrode, the deposition voltage was 40V, and the deposition time was 20min.
[0060] 3) Carry out sintering at 1250° C. for 2 hours under an argon a...
Embodiment 2
[0063] In this embodiment, a dielectric composite material with a thickness of three layers is prepared, and the specific steps are as follows:
[0064] 1) Foamed nickel pretreatment: Trim the foamed nickel into a block with an area of 2cm*2cm. Put nickel foam into a beaker and add acetone (the solution is completely submerged in nickel foam), and ultrasonically clean for 40 minutes; pour off the acetone solution and add deionized water for ultrasonication for 20 minutes; finally add absolute ethanol for ultrasonication for 20 minutes.
[0065] 2) Electrophoretic deposition: Add 0.8g of barium titanate powder and 0.6796g of polyethyleneimine into a beaker, add 50ml of isopropanol, stir at room temperature for 4h, then ultrasonic for 20min; deposit under DC power, two The platinum sheet was used as the positive electrode, the nickel foam was used as the negative electrode, the deposition voltage was 40V, and the deposition time was 20min.
[0066] 3) Carry out sintering at 1...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More