聚丙烯腈高分子半导体纤维的研究——聚丙烯腈高分子半导纤维的制备及其半导体特性

经四氯化锡处理的聚丙烯腈纤维,在进一步热处理过程中可以成为一种高分子半导纤维。它具有如下四个特点:1.纤维电阻率在10~3—10~(12)欧姆·厘米范围内可以控制热处理温度而随意调节。2.水解处理干燥后纤维的电阻值基本不变。3.有足够的机械强度可以进行多种形式的加工。4.纤维的电阻-温度、电导率-频率依赖关系,直流伏-安特性的试验结果表明它具有有机半导体特性,是一种兼有良好电性能和力学性能的高分子半导纤维。     

PAN基活性碳纤维的研制及吸附性能

<正> 活性碳纤维(ACF)是在碳纤维的基础上发展起来的又一新品种,它是纤维经碳化后,再用氧化性气体进行活化而制得。它具有比表面积大、微孔发达吸附性能好、吸脱附速度快等优点。作为吸附剂可用于环境保护、喷漆、医疗用品、水的纯化、溶剂回收等方面。 本文采用的原纤是PAN纤维,其单体克分子组成为:丙烯腈:丙烯酸甲酯:衣康酸     

STUDIES ON PAN MACROMOLECULAR SEMICONDUCTING FIBER 1. PREPARATION OF PAN CONDUCTING FIBER TREATED BY STANNIC CHLORIDE AND ITS SEMICONDUCTING BEHAVIOUR

The PAN fiber treated by Lewis acid (e.g. stannic chloride) could be transformed into a macromolecular conducting fiber by further thermal treatment. Depending on thermal treatment condition the resistance of the fiber varied from 10~3 to 10~(12) Ωand kept stable after hydrolysis. The fiber has enough strength to be processed by various means. This is a new kind of macromolecular semiconducting fiber having some characteristics similar to those of organic semiconductors.