Perfluoropolyethers used as fluids for testing in electronic fie

Details Perfluoropolyethers used as fluids for testing in electronic fie Perfluoropolyethers used as fluids for testing in electronic fie

1988-05-16

1990-09-11

Warden, Robert J.

Thermal measuring and testing

Thermal testing of a nonthermal quantity

Of susceptibility to thermally induced deteriouration, flaw,...

165 61, 252 54, 568615, 568683, G01N 2500

Patent

active

049557262

ABSTRACT:
Perfluoropolyethers having an average molecular weight higher than 390 and respectively having a kinematic viscosity lower than 8.5 cSt (at 20.degree. C.), and such as to distill by not more than 10% at temperatures lower than 140.degree. C., and by at least 90% at temperatures not higher than 260.degree. C., or, in the case in which the perfluoropolyether does not contain CF(CF.sub.3)CF.sub.2 O units, having a viscosity lower than 18 cSt (at 20.degree. C.), and such as to distill by not more than 10% at temperatures lower than 140.degree. C., and by at least 90% at temperatures not higher than 280.degree. C., are used as the only high-temperature and low-temperature working fluid in the Thermal Shock Tests to which the electronic components are submitted, and at the same time are advantageously used in other tests used in the electronic industry, such as the Gross Leak Test and the Burn in Test, allowing the operators in this field to use one single fluid for a whole set of uses.

REFERENCES:
patent: 3214478 (1965-10-01), Milian
patent: 3242218 (1966-03-01), Miller
patent: 3665041 (1972-05-01), Sianesi et al.
patent: 4523039 (1985-06-01), Lagow et al.

Affiliated with

Also associated with

Rating

Perfluoropolyethers used as fluids for testing in electronic fie does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Perfluoropolyethers used as fluids for testing in electronic fie, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perfluoropolyethers used as fluids for testing in electronic fie will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1180664