为了提高超高分子量聚乙烯(UHMWPE)的耐热性,采用超级电容活性炭(微米级)对UHMWPE进行填充改性,制备活性炭/UHMWPE复合材料。通过热重(TG/DTG)测试和维卡软化点温度测试分析了复合体系的热性能;同时研究了活性炭含量对UHMWPE的电学性能、冲击性能、表面及摩擦系数的影响。结果表明:活性炭填充可使UHMWPE材料失重5%时的分解温度提高17.44℃,维卡软化点提高了约18℃;且活性炭对UHMWPE复合体系的抗静电性、冲击性能、表面均有比较明显的改善。
In order to improve the heat resistance of ultra-high molecular weight polyethylene (UHMWPE),activated carbon/UHMWPE composite material was prepared by filling and modifying UHMWPE with super capacitive activated carbon (micron level).The thermal performance of the composite system was analyzed by TG/DTG test and Vicar softening point temperature test.The effects of activated carbon content on electrical properties,impact properties,surface and friction coefficient of UHMWPE were also studied.The results showed that the thermal decomposition temperature of UHMWPE at 5% weight loss was increased by about 17.44℃ and the softening point of Vica was increased by about 18℃.Moreover,the antistatic property,impact property and surface of UHMWPE composite system were significantly improved by activated carbon.
[1] 张欢.超高分子量聚乙烯及其复合物耐磨机理研究[D].上海:华东理工大学,2020.
[2] 彭富昌,陈守明,叶蓬.超高分子量聚乙烯塑料的性能、加工及应用[J].云南化工,2005(2):53-56.
[3] 宋宁,宋博.PTFE对PE-UHMW性能的影响[J].工程塑料应用,2016,44(2):129-133.
[4] Li Q,Basavarajaiah S,Kim N H,et al.Synergy effect of hybrid fillers on the positive temperature coefficient behavior of polypropylene/ultra-high molecular weight polyethylene composites[J].Journal of Applied Polymer Science,2011,119(2):1248.
[5] 童铭康,吴秀平,戚嵘嵘,等.铜粉填充UHMWPE导热材料性能的研究[J].工程塑料应用,2010,38(7):8-11.
[6] Xie M,Li H.Viscosity reduction and disentanglement in ultrahigh molecular weight polyethylene melt:effect of blending with polypropylene and poly(ethylene glycol)[J].European Polymer Journal,2007,43(8):3480-3487.
[7] Li Y,He H,Ma Y,et al.Rheological and mechanical properties of ultrahigh molecular weight polyethylene/high density polyethylene/polyethylene glycol blends[J].Advanced Industrial and Engineering Polymer Research,2019,2(1):51-60.
[8] Aliyu I K,Mohammed A S,Al-Qutub Amro.Tribological performance of ultra high molecular weight polyethylene nanocomposites reinforced with graphene nanoplatelets[J].Polymer Composites,2019,40(S2):E1301-E1311.
[9] Vadivel H S,Golchin A,Emami N.Tribological behaviour of carbon filled hybrid UHMWPE composites in water[J].Tribology International,2018,124:169-177.
[10] Qiao X,Na M,Ping G,et al.Halloysite nanotubes reinforced ultrahigh molecular weight polyethylene nanocomposite films with different filler concentration and modification[J].Polymer Testing,2017,57:133-140.
[11] Zhai W,Sun R,Sun H,et al.Segregated conductive CNTs/HDPE/UHMWPE composites fabricated by plunger type injection molding[J].Materials Letters,2018,229:13-16.
[12] Ding N X,Wang L L,Zuo P Y,et al.Study on electrical properties of activated carbon black filled polypropylene composites using impedance analyzer[J].Advanced Materials Research,2013,712(1):175-181.
[13] 谢长虹.超高分子量聚乙烯基固体润滑剂添加剂改性及应用研究[D].湖北:武汉理工大学,2010.
[14] 朱定一,张远超,戴品强,等.润湿性表征体系及液固界面张力计算的新方法(Ⅱ)[J].科学技术与工程,2007(13):3063-3069.
[15] 梁琳俐.超高相对分子质量聚乙烯/碳纳米管复合纤维的结构与性能研究[D].上海:东华大学,2005.
[16] 孟兆洁,王云霞,阎逢元,等.ATP-TiO2杂化材料形貌对UHMWPE复合材料微动磨损性能的影响[J].摩擦学学报,2022,42(5):990-1000.
[17] 雷毅,郭建良,张雁翔.超高分子量聚乙烯/纳米TiO2复合材料的摩擦磨损行为[J].高分子材料科学与工程,2010,26(6):48-51.
[18] 魏海荣.玻璃微珠填充UHMWPE性能研究[D].北京:北京化工大学,2012.
[19] 姚晨宇,杨田.空心玻璃微珠/超高分子量聚乙烯复合材料低速重载工况下的摩擦磨损性能[J].复合材料学报,2022,39(6):2649-2660.
[20] 薛茂权,黄之德.超高分子量聚乙烯的生物摩擦学[J].化工新型材料,2006,34(6):7-9.
基金资助
国家自然科学基金(51574113)
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