光固化导电喷墨油墨的固化过程和导电性能(英文)

Curing process and conductive performance of UV curable conductive inkjet printing

为了满足目前精细电路板制作的需要,研制了一种含纳米银的光固化导电油墨,并研究了纳米银对双重固化和电导率的影响。通过将均一分散的纳米银溶液与光固化树脂、光引发剂和热引发剂混合来配制油墨。固化过程包括光固化和热固化两步。纳米银粉的添加量以及热处理的条件对电子率都有影响。结果表明:纳米银粉为固含量的70%时制得的导电油墨在200℃下处理5min,电阻率可达5×10-6Ω·cm。

A UV curable conductive ink containing silver （Ag） nanoparticles was developed so as to satisfy the requirement of the ultra - fine PCB manufacturing presently, and the effects of Ag nanoparticles on dualcuring process and electrical conductivity were studied. The ink was prepared by uniformly dispersed Ag nanopartilees in organic solvent mixing with UV curable polymer, photoinitiator and thermal initiator. The curing process of the ink included UV curing and thermal curing and therefore it was a dual - curing process. Both Ag nanoparticles content and heat treatment conditions affected electrical resistivity. Electrical resistivity of the ink decreased to as low as 5 × 10 ^-6Ω . cm by using 70% silver nanoparticles and heat treat at 200℃ for 5 min.