驻极体对熔喷用PLA材料热性能及可纺性的影响

针对驻极体填充乳聚酸熔喷非织造材料在制备过程中存在纺丝不稳定和驻极体易团聚等缺点，特别纺丝不稳定性大大影响了聚乳酸熔喷材料的过滤效率、可驻极性和电荷贮存的稳定性。本文在在制备驻极体填充PLA复合材料的基础上，分析了熔喷用PLA复合材料的热性能，用DSC的方法，探讨了不同驻极体含量的PLA复合材料的可纺性。结果表明：少量驻极体的添加有利于PLA材料的结晶。利用熔融结晶峰、过冷度和结晶温度区间表征可纺性，研究表明纯的聚乳酸和含5%驻极体聚乳酸复合材料具有较好的可纺性。

Effect of electret particles on thermal properties and spinnability of PLA meltblown materials

Spinning instability and electrets particles agglomeration reunion electrets of polylactic acid (PLA) meltblown nonwoven materials have been presented in the preparation process. In particular, it is shown spinning instability can greatly influence in the filtration efficiency and stability of charge storage of the PLA meltblown material. In this paper, PLA composites filled with various content electrets for meltblown materials were prepared, thermal properties of PLA composites were analyzed and the spinnability of PLA composites were researched using DSC method. The research results showed that the addition of a small amount of electrets particles improved the crystallization of the PLA composites. The spinnability of PLA composites characterization By melt crystallization peak, undercooling and the crystallization temperature interval results implied that pure PLA materials and PLA composites containing 5% electrets particles had good spinnability.