采用熔融共混方法制备了二醋酸纤维素(CA)/三醋酸甘油酯(GT)/滑石粉(Talc)(CA/GT/Talc)复合材料。研究了滑石粉的粒径、表面处理工艺和添加量对复合材料力学性能、耐热性能、转矩流变性能及微观结构的影响。结果表明,滑石粉的加入有效改善了复合材料的力学性能。并且滑石粉的粒径越小越有利于复合体系的力学性能的提高。5000目滑石粉经过表面处理后对复合体系的力学性能效果更好。复合材料的拉伸强度、断裂伸长率及冲击强度随着滑石粉用量的增加呈先上升后下降的趋势,在5000目改性滑石粉用量为2%(wt,质量分数)条件下,制得的CA/GT/Talc复合材料与未添加滑石粉的CA/GT体系相比,拉伸强度从62.00MPa提高至81.63MPa,断裂伸长率从13.8%增加至52.0%,缺口冲击强度为17.05kJ/m2,增加约4倍。
The composites of cellulose diacetate (CA),glycerin triacetate (GT) and talc were prepared by melt blending.The effects of particle size,surface treatment process and addition amount of talc on the mechanical properties,heat resistance,torque rheological properties and microstructure of the composites were investigated.The results indicated that the addition of talc can effectively improve the mechanical properties of composites.After surface treating by 5000 mesh talc,the mechanical properties of the composite system were better.The tensile strength,elongation at break,and impact strength of composites increased first and then decreased with the increase in the amount of Talc.Under the condition the amount of 5000 mesh modified talc was 2wt%,the tensile strength increased from 62.00MPa to 81.63MPa and the elongation at break increased from 13.8% to 52.0% compared with the CA/GT system without talc.The impact strength was increased by about 4 times to 17.05kJ/m2.
[1] 江镇海.我国醋酸纤维素市场前景广阔[J].合成材料老化与应用,2001(3):39-40.
[2] 梅洁,陈家楠.醋酸纤维素的现状与发展趋势[J].纤维素科学与技术,1999,7(4):56-62.
[3] Edgar K J,Buchanan C M,Debenham J S,et al.Advances in cellulose ester performance and application[J].Progress in Polymer Science,2001,26(9):1605-1688.
[4] 刘登峰,付登洲,杨志远,等.醋酸纤维素-壳聚糖共混膜的制备及性能研究[J].化工新型材料,2008,36(10):75-77.
[5] 刘登峰,付登洲,杨志远.醋酸纤维素均质膜的制备及性能研究[J].化工新型材料,2008,36(2):39-41.
[6] 尚秀丽,孙林,胡中爱.导电聚吡咯/醋酸纤维素复合膜的合成及性能研究[J].化工新型材料,2008,36(1):62-63.
[7] 俞文骥,邹耀邦,张梅,等.非邻苯类环保增塑剂增塑二醋酸纤维素的研究[J].中国塑料,2016,30(12)81-85.
[8] 唐文倩,吴宏武.剑麻增强醋酸纤维素复合材料的制备与性能研究[J].中国塑料,2008,22(6):12-18.
[9] Rodríguez F J,Galotto M J,Guarda A,et al.Modification of cellulose acetate films using nanofillers based on organoclays[J].Journal of Food Engineering,2012,110(2):262-268.
[10] Abdel-Naby A S,Al-Ghamdi A A.Chemical modification of cellulose acetate by N-(phenyl amino) maleimides:characterization and properties[J].International Journal of Biological Macromolecules,2014,68(7):21-27.
[11] Afroze S,Kabir H,Rahman M M,et al.Elastic and electrical properties of graphite and talc filler reinforced polypropylene (PP) composites[J].International Journal of Basic & Applied Sciences,2012,12:13-16.
[12] Akbari A,Jawaid M,Hassan A,et al.Epoxidized natural rubber toughened polylactic acid/talc composites:mechanical,thermal,and morphological properties[J].Journal of Composite Materials,2014,48(7):769-781.
[13] Ji S J,Guo X Y,Dong J X,et al.Study on the composite strengthening effect of talc and kyanite addition on corundumamullite based ceramic foam[J].Advanced Materials Research,2011,197/198:429-435.
[14] Mueller C D,Nazarenko S,Ebeling T,et al.Novel structures by microlayer coextrusion—talc-filled PP,PC/SAN,and HDPE/LLDPE[J].Polymer Engineering & Science,1997,37(2):355-362.
[15] Liu K,Stadlbauer W,Zitzenbacher G,et al.Effects of surface modification of talc on mechanical properties of polypropylene/talc composites[C].American Institute of Physics Conference Series.AIP Publishing LLC,2016,1713(1):281-309.
[16] 张东兴,黄龙男,王荣国,等.硅烷偶联剂对滑石粉、空心玻璃微珠表面改性的研究[J].纤维复合材料,2000,17(2):10-12.
[17] Wang X,Wu J,Shu B,et al.Performance of nitrile rubber filled with micro-talc powder[J].Journal of Southwest Petroleum University,2012,34(2):156-160.
[18] 刘学习,戴干策.滑石粉增强增韧玻璃纤维毡增强聚丙烯复合材料的研究[J].石油化工,2005,34(4):380-383.
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“十二五”支撑计划课题(2015BAD16B06)
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