| 摘要 |
PROBLEM TO BE SOLVED: To provide alternative solder of adhesives with conductivity which does not contain lead instead of lead system solder having a problem of heavy metal pollution. SOLUTION: It is the alternative solder having conductivity, which is made by mixing acetic acid vinyl resin emulsion system resin and a conductive pollution-free substance. The pollution-free substance of the alternative solder 5 is carbon powder, carbon long/short fibers, or pollution-free metal powder.
|
