Adhesion strength and mechanism of poly(imide-siloxane) to Alloy 42 leadframe

Citation
Jh. Kang et al., Adhesion strength and mechanism of poly(imide-siloxane) to Alloy 42 leadframe, J ADHES SCI, 15(8), 2001, pp. 913-928
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
ISSN journal
0169-4243 → ACNP
Volume
15
Issue
8
Year of publication
2001
Pages
913 - 928
Database
ISI
SICI code
0169-4243(2001)15:8<913:ASAMOP>2.0.ZU;2-S
Abstract
Poly(imide-siloxane) containing alpha,omega-(aminophenoxypropyl)poly(dimeth ylsiloxane) and alpha,omega-(aminophenoxypropyl)poly(dimethylsiloxane-co-di phenylsiloxane) were synthesized. The adhesion strength of poly(imide-silox ane)/Alloy 42 leadframe (Fe-Ni alloy, 58% Fe and 42% Ni) joints was studied as a function of the molding temperature, time, pressure, and chemical str ucture of siloxane diamine (SDA). The thermo-oxidative decomposition of pol ydimethylsiloxane (PDMS) in poly(imide-siloxane) was examined by attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR). Sila nol groups were formed from the thermal decomposition of PDMS above 300 deg reesC. The adhesion mechanism of poly(imide-siloxane) with metal oxide was identified as the formation of covalent bonds between the silanol group of thermo-oxidatively decomposed PDMS and hydroxy groups of the metal oxide by time-of-flight secondary ion mass spectroscopy (TOF-SIMS).