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.
[1] 曹燕琳,尹静波,颜世峰.生物可降解聚乳酸的改性及其应用研究进展[J].高分子通报,2006(10):90-97.
[2] 闰明涛,胡晓敏,高俊刚.聚乳酸/羧基化聚丙烯共混物的形态与热性能研究[J].高分子学报,2007(12):1121-1126.
[3] Hassan E,Wei Y,Jiao H,et al.Dynamic mechanical properties and thermal stability of poly(lactic acid) and poly(butylene succinate) blends composites[J].Journal of Fiber Bioengineering & Informatics,2013,6(1):85-94.
[4] 阳范文,林永亮,田秀梅,等.PLA/PCL共混物的制备及其在医用材料中的应用[J].工程塑料应用,2014(2):1-5.[5] 林强,丁正,王迎雪.PLA/PBAT复合材料的结构与性能[J].塑料,2016,43(3):65-67.
[6] Qiu J,Liu F,Zhang J W,et al.Non-planar ring contained polyester modifying polylactide to pursue high toughness[J].Composites Science and Technology,2016,128:41-48.
[7] 张爱玲,刘琪芳,王松,等.聚乳酸/聚丙烯的共混改性及热学和力学性能[J].沈阳工业大学学报,2019,41(2):41-45.
[8] Hong H,Wei J,Yuan Y,et al.A novel composite coupled hardness with flexibleness polylactic acid toughen with thermoplastic polyurethane[J].Journal of Applied Polymer Scinece,2011,121(2):855-861.
[9] 焦建,钟宇科,焦蒨,等.TPS/PLA复合材料的制备、性能和形态研究[J].广州化工,2013,41(10):92-94.
[10] 杜峰.PLA/POE共混物结构与性能研究[J].中国塑料,2011,25(11):39-42.
[11] Cho S,Jang Y,Kim D,et al.High molecular weight thermoplastic polyether ester elastomer by reactive extrusion(technical report)[J].Polymer Engineering & Scinece,2010,49(7):1456-1460.
[12] Buck W H,Cella R J,Gladding E K,et al.Morphology and physical properties of polyether-ester thermoplastic elastomers[J].Journal of Polymer Scinece Polymer Symposia,1974,48(1):47-60.
[13] Hoeschele G K.Segmented polyether ester copolymers-a new generation of high performance thermoplastic elastomers[J].Polymer Engineering & Scinence,1974,14(12):848-852.
[14] Wang S,Pang S,Pan L,et al.Compatibilization of poly(lactic acid)/ethylene-propylene-diene rubber blends by using organic montmorillonite as a compatibilizer[J].Journal of Applied Polymer Science,2016,133(46):44192.
[15] 刘亚,彭富兵.抗静电改性聚丙烯纺粘非织造布的研制[J].产业用纺织品,2007,25(9):5-8.
[16] 田瑶珠,程利萍,宋帅,等.炭黑／聚氯乙烯抗静电复合材料的制备及性能[J].塑料,2012,41(3):63-66.
[17] Balberg I.A comprehensive picture of the electrical phenomena in carbon black-polymer composites[J].Carbon,2002,40(2):139-143.
[18] 付东升,张康助,张强.导电高分子材料研究进展[J].现代塑料加工应用,2004(1):55-59.
[19] Papageorgiou G Z,Achilias D S,Nanaki S,et al.PLA nanocomposites:effect of filler type on non-isothermal crystallization[J].Thermochimica Acta,2010,511(1-2):129-139.
[20] Wu D,Wu L,Zhou W,et al.Crystallization and biodegradation of polylactide/carbon nanotube composites[J].Polymer Engineering & Science,2010,50(9):1721-1733.
基金资助
海南省重点研发计划项目(ZDYF2019192);应急管理部消防救援局项目(2018XFCX31)
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