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聚醚嵌段酰胺与蒙脱土(MMT)通过双螺杆共混及精密挤出成形制备聚醚嵌段酰胺-MMT中空纤维管,试图利用MMT的纳米尺寸效应改善材料刚性,考察了MMT含量对中空纤维力学性能与凝聚态结构的影响规律。分别采用力学性能测试、差示扫描量热法、热失重分析、动态力学分析等手段对中空纤维的拉伸性能、热性能和动态力学性能等展开研究。结果表明:当MMT质量分数为9%左右时,中空纤维管的拉伸模量和强度较高,热稳定性略微降低但影响不大,动态储能模量显著提高,刚性增加,试验结果已被应用于相关产品开发中。
Polyether block amide and montmorillonite (MMT) were prepared by twin-screw blending and precision extrusion forming polyether block amide-MMT hollow fiber tube, trying to use MMT nano-size effect to improve the material rigidity, investigated the MMT content of Influence of Hollow Fiber on Mechanical Properties and Condensed Structure. The tensile properties, thermal properties and dynamic mechanical properties of hollow fibers were investigated by mechanical properties testing, differential scanning calorimetry, thermogravimetric analysis and dynamic mechanical analysis. The results showed that when the mass fraction of MMT is about 9%, the tensile modulus and strength of hollow fiber tube are higher, the thermal stability is slightly lower but the effect is not obvious, the dynamic storage modulus is increased obviously and the rigidity is increased. Used in related product development.