Properties and applications of vinylidenefluoride copolymers

329

P61 Properties

and applications

of vinylidenefluoride

copolymers

Kentaro Tsutsumi Tokyo Research

Center,

Central

Glass Co. Ltd.,

Tokyo

[Japan)

Vinylidene fluoride copolymers are well known because of their unique characteristics. We have been developing useful vinylidene fluoride copolymers which have optical properties, ferroelectricity and water repellency for several uses, as seen in the following Table: TABLE.

VDF

Monomer

combinations

and applications

of VDF copolymers

Co-monomer

Characteristics

Application

TTFE HFA TFE

Low refractive index Transparency

POF cladding materials

TrFe

Ferroelectricity

Active devices of LCD

HFA

Oil and water repellency

Coating materials

For polymeric optical fibers (POF), very low attenuation values, 120 - 150 dB/Km, are required for modern data communication use. New POF cladding materials have been developed by combining VLIF, TrFE, TFJ3 and hexafluoroacetone (HFA) for high quality POF. We report the manufacturing process and properties of these vinylidene fluoride copolymers as POF cladding materials and other uses.