中空度对中空酚醛纤维性能的影响

利用酚醛树脂纤维在固化中的皮芯效应,控制表皮固化层的交联厚度,用溶剂溶出未交联的芯部,制备出一系列不同中空度的中空酚醛纤维。分别采用SEM、电子纤维强力仪、TG-DSC、自制隔热效果测试仪对不同中空度中空酚醛纤维的截面形貌、力学性能、高温性能和隔热性能进行了考察。结果表明：随着中空酚醛纤维中空度的增加,中空纤维的壁厚变薄,纤维的表观力学性能、热分解温度和残炭率都逐渐降低,实际抗拉强度变化不大,隔热性能大幅提高。...

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Bibliographic Details
Published in材料工程 no. 1; pp. 34 - 37
Main Author 张东卿 郭全贵 宋燕 翟更太 刘朗
Format Journal Article
LanguageChinese
Published 中国科学院山西煤炭化学研究所炭材料重点实验室,太原,030001 2012
Subjects
中空度
中空酚醛纤维
隔热性能
中空酚醛纤维
隔热性能
中空度
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ISSN1001-4381
1001-4381
DOI10.3969/j.issn.1001-4381.2012.01.008

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Summary:利用酚醛树脂纤维在固化中的皮芯效应,控制表皮固化层的交联厚度,用溶剂溶出未交联的芯部,制备出一系列不同中空度的中空酚醛纤维。分别采用SEM、电子纤维强力仪、TG-DSC、自制隔热效果测试仪对不同中空度中空酚醛纤维的截面形貌、力学性能、高温性能和隔热性能进行了考察。结果表明：随着中空酚醛纤维中空度的增加,中空纤维的壁厚变薄,纤维的表观力学性能、热分解温度和残炭率都逐渐降低,实际抗拉强度变化不大,隔热性能大幅提高。
Bibliography:ZHANG Dong-qing,GUO Quan-gui,SONG Yan,ZHAI Geng-tai,LIU Lang（Key Laboratory of Carbon Materials,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China）
Hollow phenolic fibers with different hollowness were prepared by controlling thickness of the partially-crosslinking spun filament derived from melt-spinning of the phenolic resin.Section morphology,mechanical properties,high temperature properties and thermal insulation of hollow phenolic fibers with different hollowness were charactered by SEM,fiber strength tester,TG-DSC and thermal insulation tester.The results show that shell thickness,apparent mechanical properties,degradation temperature and char yield decrease,mechanical properties change little and thermal insulation increases quickly with the degree of hollowness increase.
11-1800/TB
hollowness; hollow phenolic fiber; thermal insulation
ISSN:1001-4381
1001-4381
DOI:10.3969/j.issn.1001-4381.2012.01.008