Conductive paste used for electrode packaging of thin film capacitor and manufacturing method for conductive paste
A technology of thin film capacitors and conductive pastes, which is applied to fixed capacitor electrodes, thin film/thick film capacitors, laminated capacitors, etc., and can solve the problem of gold spraying materials (low utilization rate of zinc or zinc-tin alloy wire, many factors affecting quality, etc.) Low product qualification rate and other issues, to achieve the effect of fully automatic production, no dust pollution, and simplified production process
Inactive Publication Date: 2018-01-05
杭州正祺新材料有限公司
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The prior art has the following defects: 1. The process is complex, with many factors affecting quality, low product qualification rate and poor stability; 2. The utilization rate of the gold-spraying material (zinc or zinc-tin alloy wire) is low and the manufacturing cost is high; 3. In the There is dust pollution in the process of melting and spraying, so a conductive paste for film capacitor electrode packaging and its manufacturing method are proposed
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] refer to figure 1 The present invention is a kind of electroconductive paste for film capacitor electrode encapsulation and its manufacturing method, and the composition of each component of described electroconductive paste comprises the following parts:
[0027] 1. Selection of conductive components in conductive paste: choose zinc or zinc-tin alloy according to the composition requirements in Table 1, powder particle size -320 mesh, D50=10-20um, and flat or spherical shape;
[0028] Table 1: Composition of zinc and zinc-tin alloys
[0029] Numbering
C
D
E
F
Zinc (wt%)
100
90
80
70
Tin (wt%)
0
10
20
30
[0030] 2. Prepare the epoxy resin binder solution according to the composition in Table 2. It is advisable to make the viscosity (25°C) within the range of 6000-12000mPa.s, and add other additives appropriately to make zinc or zinc-tin alloy The principle is to fully disperse the powder;
[0031] Table...
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
| Property | Measurement | Unit |
|---|---|---|
| Powder size | aaaaa | aaaaa |
| Viscosity | aaaaa | aaaaa |
Login to View More
Abstract
The invention provides conductive paste used for electrode packaging of a thin film capacitor and a manufacturing method for the conductive paste. The conductive paste comprises the components (basedon weight percentages) of 60-80% of zinc or zinc tin alloy powder (conductive components), 18.5-37.5% of epoxy resin binder solution (A component) and 1.5-2.5% of curing agent (B component); in the zinc or zinc tin alloy powder components, tin accounts for 0-30wt% and the balance is zinc; the powder is characterized in that the powder particle size is -320 meshes and D50 is equal to 10-20[mu]m, and the powder is flat or spherical; and the binder consists of epoxy resin, a diluting agent, a coupling agent, a curing agent and other auxiliaries. The conductive paste is applied to the electrode packaging production of the thin film capacitor to replace a gold wire spraying process and corresponding thermal spraying and coating and lead welding processes, so that a new material is provided forproduction of the thin film capacitor, the production process of the thin film capacitor can be simplified, the cost can be lowered, the stability and the like of the electric performance of the thinfilm capacitor can be improved, and a new situation is created for the manufacturing of the thin film capacitor.
Description
【Technical field】 [0001] The invention relates to the technical field of film capacitor electrode packaging materials, in particular to a conductive paste for film capacitor electrode packaging and a manufacturing method thereof. 【Background technique】 [0002] Film capacitors have been widely used in new energy, electric vehicles, electric locomotives, smart grids and other fields due to their good withstand voltage performance, large capacitance and large current passing capacity. According to industry statistics, the market size of film capacitors is growing at a rate of about 15% every year. By the end of the "13th Five-Year Plan", my country's film capacitor market will exceed 13 billion yuan. [0003] Compared with international film capacitor manufacturers such as Wima in Germany, ICEL in Italy, CDE in the United States, and Nichicon in Japan, the overall competitiveness of film capacitor companies in my country is weak. In addition to the quality of the film and meta...
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
Login to View More IPC IPC(8): H01B1/22H01G4/33H01G4/005
Inventor 张晓峰
Owner 杭州正祺新材料有限公司