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

Low-temperature halogen-free high-conductivity carbon paste and preparation method thereof

A technology of conductive carbon paste and high conductivity, which is applied in the direction of cable/conductor manufacturing, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., which can solve the problems of poor conductivity and waste of electric energy, and achieve oxidation resistance and acid resistance. Good alkali and solvent corrosion performance, low surface dry temperature effect

Active Publication Date: 2012-02-22
重庆瑞福德精细化工科技有限公司
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the surface dry temperature of conductive carbon paste on the market should reach more than 135 degrees in one minute, and the amount of electric energy is wasted. Moreover, the resistance per square meter after curing is relatively high, which is about 90~100Ω, and the conductive effect is poor.

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

Embodiment 1

[0035] First prepare the organic vehicle:

[0036] Polyethylene terephthalate 11%

[0037] Polyurethane 11%

[0038] Acrylic resin 11%

[0039] Dimethyl nylon acid ester (DBE) 66.5%

[0040] Polyurethane curing agent 0.5%

[0041] Weigh polyethylene terephthalate, polyurethane, acrylic resin, and dimethyl nylon acid (DBE) according to the above mass percentages, place them in an electric heating reaction pot, and heat them in the electric heating reaction pot. The above mixture is stirred at a high speed until polyethylene terephthalate, polyurethane, and acrylic resin are completely dissolved in DBE, and the stirring time for 500 kg of the above raw materials is 5 to 8 hours. After the stirring is complete, add the corresponding proportion of polyurethane curing agent, and stir evenly, and the obtained organic carrier is the required one.

[0042] Then prepare conductive carbon paste:

[0043] Toner 10%

[0044] Graphite powder 15%

[0045] Organ...

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
Radiusaaaaaaaaaa
The average particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses low-temperature halogen-free high-conductivity carbon paste and a preparation method thereof. The conductive carbon paste comprises the following components in percentage by mass: 6-20 percent of carbon powder, 12-22 percent of graphite, 70-90 percent of organic carrier and 0.5-5 percent of solvent, wherein the organic carrier is formed by mixing 8-18 percent of polyethylene terephthalate, 8-18 percent of polyurethane, 8-18 percent of acryl resin, 50-75 percent of solvent and 0.3-1 percent of polyurethane curing agent, the solvent is dimethyl nylon acid or isophorone. When the conductive carbon paste provided by the invention is compared with the existing like product, the surface dry temperature of the conductive carbon paste is lower, after the conductive carbon paste is cured, the resistance of each square of the conductive carbon paste is close to a half of that of the like product, thus, the conductive carbon paste has better electric conductivity and meets the use requirement, the use performance is improved and a lot of energy is saved.

Description

[0001] technical field [0002] The invention relates to a low-temperature halogen-free high-conductivity carbon paste and a preparation method thereof. [0003] Background technique [0004] Conductive carbon paste is evenly distributed on the printing surface with carbon-based particles of non-metallic conductor materials, and meets the requirements of various products through the matching of graphite powder and carbon powder in different proportions. It has been widely used in far-infrared electric heating films , Membrane switches and other flexible circuit boards, touch screens, cold light sheets, solar cells, electronic products, medical instruments and other electronic equipment. At present, the surface dry temperature of the conductive carbon paste on the market should reach above 135 degrees in one minute, and the waste of electric energy is relatively large, and the resistance per square is relatively high after curing, which is about 90~100Ω, and the conductive ...

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
IPC IPC(8): H01B1/24H01B13/00
Inventor 兰玉彬
Owner 重庆瑞福德精细化工科技有限公司