壳聚糖纤维的热稳定性和燃烧性能  

Thermal stability and combustion behavior of chitosan fiber

作　　者：闫红芹[1] 凤权[1] 彭祥[1] 谢飞[1] 

机构地区：[1]安徽工程大学安徽省高等学校纺织面料重点实验室,安徽芜湖241000

出　　处：《纺织学报》2015年第10期12-16,共5页Journal of Textile Research

基　　金：安徽省自然科学基金计划资助项目(1408085ME87)

摘　　要：为了解壳聚糖纤维的热稳定性和燃烧性能,采用热重(TG)法测试了纤维的热学特征,对纤维耐热性能和极限氧指数进行了测试,用红外光谱法分析了受热后纤维结构的变化。结果表明:壳聚糖纤维的TG曲线有3个失重台阶,在270℃左右开始热分解,900℃分解完全,残炭量为8.6%;纤维热稳定性好,耐湿热性优于耐干热性,随干热和湿热处理温度和时间的增加,纤维性能呈下降趋势,断裂伸长率下降幅度大于断裂强力;壳聚糖纤维极限氧指数为38%,燃烧特征属于难燃纤维。TG was used to analyze the thermal stability and combustion behavior of chitosan fiber, heat- resistance and limiting oxygen index of chitosan fiber were tested, the microstructure change of the heated fiber was investigated by infrared spectrometry. The result showed that three weight loss steps appear in the TG curves of the chitosan fiber, showing it begins to decompose at about 270℃ and decomposes completely at 900 ℃ , and the amount residual carbon is 8.6%. The thermal stability of the fiber is also good, and its wet heat resistance is better than dry heat resistance. Properties of the fiber decrease with the increase of heating temperature and time, and the decrease in breaking elongation is greater than that in tensile strength. The limiting oxygen index of chitosan fiber is 38% , and the combustion behavior are similar with that of refractory fiber

关 键 词：壳聚糖纤维 热稳定性 燃烧性能 极限氧指数 

分 类 号：TS102.212[轻工技术与工程—纺织工程]