Method of producing polymeric electret element

Details Method of producing polymeric electret element Method of producing polymeric electret element

1984-09-18

1986-05-27

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 24, 264 27, 264234, 26433114, B29C 7102, B29C 7104

Patent

active

045914656

ABSTRACT:
In producing an electret element having piezoelectric properties by subjecting a vinylidene cyanide copolymer to a polarization treatment, the copolymer is heat-treated at a temperature below the glass transition temperature thereof prior to or simultaneously with the polarization treatment to thereby increase the longitudinal piezoelectric effect (Kt).

REFERENCES:
patent: 2373093 (1945-04-01), Baker
patent: 3862288 (1975-01-01), Su
patent: 3878274 (1975-04-01), Murayama et al.
patent: 3991451 (1976-11-01), Maruyama et al.
patent: 4248808 (1981-02-01), West
patent: 4268653 (1981-05-01), Uchidoi et al.
patent: 4302408 (1981-11-01), Ichihara et al.
patent: 4346505 (1982-08-01), Lemonon et al.
patent: 4434114 (1984-02-01), Sprout, Jr.

Affiliated with

Also associated with

Rating

Method of producing polymeric electret element does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing polymeric electret element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing polymeric electret element will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1570392