苎麻纤维表面处理对其复合材料性能的影响
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摘要
在不同处理时间和功率的条件下,对苎麻纤维表面进行冷等离子体处理。通过分析纤维表面能以及纤维拉伸强度的变化,选取了3组处理纤维与未处理纤维作为复合材料的增强纤维,并且运用模压工艺制备苎麻纤维增强复合材料。经过扫描电镜分析、弯曲强度和剪切强度测试以及单纤维断裂实验,探究了冷等离子体处理对苎麻纤维表面性能及其复合材料性能的影响。结果表明:冷等离子体处理去除了苎麻纤维表面的胶质和杂质,提升了纤维与环氧树脂的粘附功。随着处理时间与功率的增加,复合材料板的力学性能随之提升。与未处理纤维复合材料相比,当处理条件为3min、200W时,复合材料的弯曲强度与剪切强度分别提升了37.0%和30.5%。
Low temperature plasma treatment with different treatment times and output powers were applied to treat ramie fibers.Through the analysis of fiber surface energy and tensile strength,3 groups as well as control group were chosen as the reinforced fibers of composites,then ramie fiber reinforced composites were made by compression molding technology.The influence of low temperature plasma treatment on the ramie fiber and its composite were tested by scanning electron micrograph(SEM),bending test,shearing test and fragmentation test.The results indicated that pectin and impurities covering of fibers were removed after low temperature plasma treatment,and the surface energy of ramie fibers and the adhesion power with epoxy resin were increased significantly.The mechanical properties of ramie fiber reinforced composite were improved with the increase of treatment times and output powers.Compared with the untreated ramie fiber composite,flexural strength and shearing strength of composite grew 37.0% and 30.5% after 3 min-200 Wtreatment.
Low temperature plasma treatment with different treatment times and output powers were applied to treat ramie fibers.Through the analysis of fiber surface energy and tensile strength,3 groups as well as control group were chosen as the reinforced fibers of composites,then ramie fiber reinforced composites were made by compression molding technology.The influence of low temperature plasma treatment on the ramie fiber and its composite were tested by scanning electron micrograph(SEM),bending test,shearing test and fragmentation test.The results indicated that pectin and impurities covering of fibers were removed after low temperature plasma treatment,and the surface energy of ramie fibers and the adhesion power with epoxy resin were increased significantly.The mechanical properties of ramie fiber reinforced composite were improved with the increase of treatment times and output powers.Compared with the untreated ramie fiber composite,flexural strength and shearing strength of composite grew 37.0% and 30.5% after 3 min-200 Wtreatment.
引文
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[8]王春红,刘胜凯.碱处理对竹纤维及竹纤维增强聚丙烯复合材料性能的影响[J].复合材料学报,2015,32(3):683-689.
[9]郑学晶,秦树法,马力强,等.剑麻纤维增强胶原基复合材料[J].复合材料学报,2008,25(3):12-19.
[10]Fang Mingzhao,Tomonaga Okabe,Nobuo Takeda.The estimation of statistical fiber strength by fragmentation tests of single-fiber composites[J].Composites Science and Technology,2000,60(10):1965-1974.
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[12]Liu X,Cheng L.Influence of plasma treatment on properties of ramie fiber and the reinforced composites[J].Journal of Adhesion Science&Technology,2016,31(15):1723-1734.
[2]古茜,成玲,王心淼.苎麻脱胶率对其复合材料性能的影响[J].天津工业大学学报,2014,33(1):6-14.
[3]倪新亮,金凡亚,沈丽如,等.等离子体处理碳纤维/树脂复合材料[J].复合材料学报,2015,32(3):721-727.
[4]王洪艳,杜官本.冷等离子体技术在木竹材表面改性中的应用及研究发展[J].化学与粘合,2013,35(1):57-60.
[5]刘艳春.等离子体处理改善腈纶纤维的吸湿性及其时效性[J].西安工程大学学报,2009,23(2):280-284.
[6]Fox H W,Zisman W A.The spreading of liquids on low-energy surfaces modified tetrafluoroethylene polymers[J].Journal of Colloid Science,1952,7(2):109-121.
[7]江泽慧,陈复明,王戈,等.基于动态接触角分析的竹纤维表面能表征[J].北京林业大学学报学报,2013,35(3):143-148.
[8]王春红,刘胜凯.碱处理对竹纤维及竹纤维增强聚丙烯复合材料性能的影响[J].复合材料学报,2015,32(3):683-689.
[9]郑学晶,秦树法,马力强,等.剑麻纤维增强胶原基复合材料[J].复合材料学报,2008,25(3):12-19.
[10]Fang Mingzhao,Tomonaga Okabe,Nobuo Takeda.The estimation of statistical fiber strength by fragmentation tests of single-fiber composites[J].Composites Science and Technology,2000,60(10):1965-1974.
[11]Hui C Y,Phoenix S L,Shia D.The single-filament-composite test:a new statistical theory for estimating the interfacial shear strength and weibull parameters for fiber strength[J].Composites Science and Technology,1997,57(12):1707-1725.
[12]Liu X,Cheng L.Influence of plasma treatment on properties of ramie fiber and the reinforced composites[J].Journal of Adhesion Science&Technology,2016,31(15):1723-1734.