通过熔融共混法,在聚乳酸(PLA)纺粘非织造布切片中分别添加0.5%、1.5%和3.0%(wt,质量分数,下同)的多壁碳纳米管(MWCNTs)、固体抗静电剂(JL-5P)和液体抗静电剂(JL-WT)制备可生物降解抗静电PLA非织造布复合切片,进一步通过表面处理剂对复合切片进行表面整理。通过扫描电镜(SEM)对所制备的复合切片微观形貌进行表征,并采用微机控制电子万能试验机和高阻仪研究复合切片的力学性能与导电性能。结果表明:MWCNTs使PLA材料抗静电性有较大的提升,切片的体积电阻率从1.49×1018Ω·cm降到4.34×108Ω·cm;表面处理后的复合材料的抗静电性有进一步的改善;拉伸强度实验表明抗静电填料的添加改善了PLA的力学性能。
Via melt blending method,biodegradable polylactic acid (PLA) nonwoven composite antistatic slices were prepared by PLA spun-bonded nonwoven cloth which added 0.5%,1.5% and 3.0% respectively(wt%) of carbon nanotubes(MC),solid antistatic agent(5P) and liquid antistatic agent(WT),and through the surface treating agent for surface finishing composite section.The microstructure of the prepared composite section was characterized by scanning electron microscopy(SEM).The results shown that MC made PLA material antistatic ability had bigger promotion,sliced volume resistivity from 1.49×1018Ω·cm to 4.34×108Ω·cm.After surface treatment,the antistatic property of the composite material was improved.The tensile strength experiments showed that the addition of antistatic filler improved the mechanical properties of PLA.
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