摘要
采用水热法制备出锂皂石,通过阳离子交换法对其改性制备出改性锂皂石(LAP-CTAB)。以LAP-CTAB为填料,通过熔融插层法制备了LDPE/LAP-CTAB纳米复合材料,并对其进行表征与测试。结果表明:当LAPCTAB的添加量为1%时,LDPE/LAP-CTAB纳米复合材料的力学性能达到最优,其拉伸强度、断裂伸长率和冲击强度分别提高了9.4%、54.4%和38.4%。此外,LAP-CTAB的加入提高了LDPE基纳米复合材料的热稳定性、流变性、紫外吸收性和阻燃性能。
Laponite was prepared by hydrothermal method and modified by cation exchange method,which was applied to prepare modified laponite(LAP-CTAB).The LDPE/LAP-CTAB nanocomposites were prepared by melt intercalation with LAP-CTAB as filler.Moreover,LDPE/LAP-CTAB nanocomposites were characterized and tested.The results show that when the content of LAP CTAB is 1%,the mechanical properties of LDPE/LAP-CTAB nanocomposites are the best,and the tensile strength,elongation at break and impact strength of LDPE/LAP-CTAB nanocomposites increase by 9.4%,54.4% and 38.4% respectively.In addition,the addition of LAP-CTAB improves the thermal stability,rheological properties,ultraviolet absorption and flame retardancy of LDPEbased nanocomposites.
引文
[1]张乾.聚乙烯结晶度测定及结晶机理的研究[D].西安:西北工业大学,2003.
[2]向裕松.浅谈PE管在铁路给水管道运用的优缺点[J].成铁科技,2014(3):17-18.
[3]Pieper H,Bosbach D,Panak P J,et al.Eu(III)coprecipitation with the trioctahedral clay mineral,hectorite[J].Clays&Clay Minerals,2006,54(1):45-53.
[4]Nicolai T,Cocard S.Structure of gels and aggregates of disk-like colloids[J].European Physical Journal E,2001,5(2):221-227.
[5]Porter T L,Pace D,Whitehorse R,et al.Formation of poly(methylmethacrylate)layers on the surface and intergallery regions of Cu2+,Fe3+,and VO2+-exchanged hectorite thin films[J].Materials Chemistry&Physics,2002,76(1):92-98.
[6]Singhal R G,Capracotta M D,Martin J D,et al.Transport properties of hectorite based nanocomposite single ion conductors[J].Journal of Power Sources,2004,128(2):247-255.
[7]Porter T L,Eastman M P,Bain E,et al.Analysis of peptides synthesized in the presence of SAz-1 montmorillonite and Cu(2+)exchanged hectorite[J].Biophysical Chemistry,2001,91(2):115-124.
[8]赵伟安,侯万国,孙德军,等.聚苯乙烯/有机合成锂皂石纳米复合材料的制备与表征[J].应用化学,2003,20(6):606-608.
[9]Timmaraju M V,Gnanamoorthy R,Kannan K.Effect of environment on flexural fatigue behavior of polyamide 66/hectorite nanocomposites[J].International Journal of Fatigue,2011,33(4):541-548.
[10]Shirazi S M,Janghorban K.Investigation of physical and chemical properties of polypropylene hybrid nanocomposites[J].Materials&Design,2012,34:474-478.
[11]周春晖,杜泽学,李小年,等.水热体系合成锂皂石结构的演化和影响规律研究[J].无机化学学报,2005,21(9):1 327-1 332.
[12]钱鑫昌.聚丙烯/锂皂石复合材料的制备[D].武汉:武汉工程大学,2014.
[13]孙红娟,刘颖,彭同江,等.锂皂石的水热合成与表征[J].人工晶体学报,2008,37(4):844-848.
[14]范能全,范永仙,童东绅,等.表面活性剂介质中有机化锂皂石的水热合成及结构特征[J].高校化学工程学报,2010,24(5):852-857.
[15]Baskaralingam P,Pulikesi M.Modified hectorites and adsorption studies of a reactive dye[J].Applied Clay Science,2007,37(1):207-214.
[16]许恩惠,郑强,王彩红,等.尼龙6/有机锂皂石纳米复合材料的制备及性能研究[J].高分子学报,2015(5):515-523.
[17]Chen G,Qi Z,Shen D.Shear-induced ordered structure in polystyrene/clay nanocomposite[J].Journal of Materials Research,2000,15(2):351-356.
[18]M Zouheir Jandali,Georg Widmann.热塑性聚合物[M].上海:东华大学出版社,2008.
[19]刘继纯,付梦月,李晴媛,等.蒙脱土/聚苯乙烯复合材料的热分解成炭行为[J].复合材料学报,2012,29(6):9-18.
[20]熊丽君,钱鑫昌,张兵,等.高抗弯聚丙烯/有机化锂皂石复合材料的制备与性能[J].高分子材料科学与工程,2014,30(6):152-155.
[21]许恩惠,郭前程,陈磊,等.锂皂石分散状态对尼龙6纳米复合材料流变行为的影响[J].高分子材料科学与工程,2015,31(9):69-75.
[22]李斌,孙才英,张秀成.用CONE/TG研究含淀粉膨胀阻燃聚丙烯体系的阻燃和烟释放[J].高分子材料科学与工程,2000,16(5):146-149.