Electroisolation materials

The electrical conductivity of PET fibers as compared with other main synthetic fibers is relatively low. This explains why PET fibers are often utilized in the manufacture of textiles as electroisolating materials. The value of the electrical resistivity characterizing reciprocal conductivity is of the order 10 (/2 cm). The mechanism of the electrical conductivity of PET fibers is still a matter of controversy. According to results attained [57], there are convincing arguments that in the case of PET objects the electrical conductivity is due to the ionic mechanism. 

Synthesized, within given investigation, polyestersulfoneketones on the basis of phthalic acid polyarylates on the basis of 3,5-dibromine- -oxybenzoic acid and phthalic acids and copolyesters on the basis of teie-phthaloyl-bis( -oxybenzoic) acid are of interest as heat-resistant and film materials which can find application in electronic, radioelectronic, avia, automobile, chemical industries and electotechnique as thermo-stable constmctional and electroisolation materials as well as for the protection of the equipment and devices from the influence of aggressive media. 

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