热分析在无纺布生产中的应用

Application of Thermal Analysis on the Processing of Adhesive Bonded Fabric

本文用热分析研究了聚酯,聚芳酰胺等纤维及其无纺布的热谱。指出用差示扫描量热(DSC)可对无纺布及其原材料纤维作定性分析,区分主体纤维和热熔粘结纤维,聚酯纤维无纺布中的粘结纤维可用普通聚酯用特殊的加工工艺纺丝而得,用共缩聚聚酯树脂纺丝得到的粘结纤维会降低无纺布的耐热性。根据熔融曲线,可确定无纺布生产中的热粘合工艺温度在始熔至峰值间。对无纺布的耐热性作比较评价,在热失重(TG)曲线上失重50％前出现台阶的情况下,由第一阶段失重曲线为依据,参考割线法求取材料表观分解温度及耐温指数应该更为准确地接近实际数据。

Polyester fiber ariel aromatic polyamtde fiber and their addhesive bonded fabric have been studied by thermal analysis. The experimental results show that the framework fiber and low melting fiber (or adehesire fiber)can be distinguished by thermal analysis. The hot pressing technological temperature on the processing of adhesive bonded fabric can be determined according to melting curve of fiber. We have put a proposal forward for evaluation of heat resistance of adhesive bonded fabric.