STUDIES ON DIELECTRIC-RELAXATION BEHAVIOR OF POLY(ETHYLENE-TEREPHTHALATE) AT THE LOW-TEMPERATURE .1. EFFECTS OF CRYSTALLIZATION ON THE BETA-PROCESS OF POLY(ETHYLENE-TEREPHTHALATE)

被引：0
|
作者：
YAMATO, M [1 ]
TATUMI, T [1 ]
ITO, E [1 ]
机构：
[1] IDEMITU KOUSAN CO LTD,CHEM & RES LABS,SODEGAURA,CHIBA 29902,JAPAN
来源：
KOBUNSHI RONBUNSHU | 1993年 / 50卷 / 03期
关键词：
DIELECTRIC RELAXATION STRENGTH; RELAXATION TIME; BETA-PROCESS; CRYSTALLIZATION; POLY(ETHYLENE TEREPHTHALATE);
D O I：
10.1295/koron.50.131
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The effects of crystallization on dielectric relaxation strength and relaxation time in the beta process were studied from dielectric measurements of poly(ethylene terephthalate). The frequency at a maximum absorption fmax increased with an increase in crystallinity, indicating that the relaxation time of the beta process decreases with an increase in crystallinity. The dielectric relaxation strength decreases with increasing crystallinity. The activation energy has a limited effect on crystallinity.
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页码：131 / 136
页数：6
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