MGF/PLA复合材料的制备及性能
Fabrication and Properties of MGF/PLA Composites
摘 要
采用熔融共混与模压成型工艺制备了磨碎玻璃纤维(MGF)/聚乳酸(PLA)复合材料, 考察了MGF的含量对复合材料的微观形貌、力学性能和熔体流动速率的影响。结果表明: 经过硅烷偶联剂表面包覆改性的MGF在基体中分散均匀, 且与PLA之间具有较好的界面结合; 随着MGF含量的增加, MGF/PLA复合材料的拉伸强度下降, 弹性模量持续上升, 而断裂伸长率先增大后减小; MGF总体上提高了复合材料系的硬度, 但却大幅降低了其熔体流动速率。
磨碎玻璃纤维
复合材料
力学性能
熔体流动速率
poly lactic acid
milled glass fiber
composite
mechanical property
melt flow rate
Abstract
The composites of poly lactic acid (PLA) filled with milled glass fibers (MGF) were prepared via molten blending and compression molding. The effects of MGF contents on the morphology, mechanical properties and melt flow rate of MGF/PLA composites were investigated. The results show that well dispersed MGF were coated by silane coupling agent in matrix, and improved interfacial adhesion between the PLA and MGF was observed. With the increase of MGF, the tensile strength was decreased, and the Young′s modulus exhibited the trend of continuous increase. However, the elongation at break of MGF/PLA composites was increased first and then declined. The MGF led to positive influence on the hardness, but brought on a remarkable negative impact on the melt flow rate of MGF/PLA composites.
中图分类号 TQ323.9
所属栏目 新材料 新工艺
基金项目
收稿日期 2011/8/26
修改稿日期 2012/5/8
网络出版日期
作者单位点击查看
引用该论文: YANG Ji-nian,XU Ai-qin,DING Guo-xin. Fabrication and Properties of MGF/PLA Composites[J]. Materials for mechancial engineering, 2012, 36(9): 50～53
杨继年,许爱琴,丁国新. MGF/PLA复合材料的制备及性能[J]. 机械工程材料, 2012, 36(9): 50～53
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参考文献
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【2】NAMPOOTHIRI K M, NAIR N R, JOHN R P. An overview of the recent developments in polylactide (PLA) research [J].Bioresource Technology, 2010, 101(22): 8493-8501.
【3】YU T, LI Y, REN J. Preparation and properties of short natural fiber reinforced poly(lactic acid) composites[J].Transactions of Nonferrous Metals Society of China, 2009, 19(s3): s651-s655.
【4】HUDA M S, DRZAL L T, MOHANTY A K, et al. Effect of fiber surface-treatments on the properties of laminated biocomposites from poly(lactic acid) (PLA) and kenaf [J].Composites Science and Technology, 2008, 68(2): 424-432.
【5】于涛, 李岩, 任杰.阻燃级黄麻短纤维/聚乳酸复合材料的制备及性能研究[J].材料工程, 2009(增2): 194-297.
【6】OROZCO V H, KOZLOVSKAYA V, KHARLAMPIEVA E, et al. Biodegradable self-reporting nanocomposite films of poly(lactic acid) nanoparticles engineered by layer-by-layer assembly [J].Polymer, 2010, 51(18): 4127-4139.
【7】FUKUSHIMA K, ABBATE C, TABUANI D, et al. Biodegradation of poly(lactic acid) and its nano-composites [J].Polymer Degradation and Stability, 2009, 94(10): 1646-1655.
【8】ZHAO Y Q, LAU K T, KIM J, et al. Nanodiamond/poly (lactic acid) nanocomposites: effect of nanodiamond on structure and properties of poly (lactic acid) [J].Composites: Part B, 2010, 41(8): 646-653.
【9】HUDA M S, DRZAL L T, MOHANTY A K, et al. Chopped glass and recycled newspaper as reinforcement fibers in injection molded poly(lactic acid) (PLA) composites: A comparative study[J]. Composites Science and Technology, 2006, 66(11/12): 1813-1824.
【10】刘涛, 赵秀丽, 余雪江, 等.玻璃纤维增强聚乳酸的制备及性能研究[J].塑料科技, 2009, 37(10): 54-57.
【11】卢仁杰, 韩冰, 李锦春.GF增强PLA复合材料的界面设计及性能研究[J].工程塑料应用, 2010, 38(4): 25-29.
【12】KHAN M A, HASSAN M M. Effect of γ-aminopropyl trimethoxy silane on the performance of jute-polycarbonate composites [J].Journal of Applied Polymer Science, 2006, 100(5): 4142-4154.
【13】SUE J H, HUANG J, YEE A F. Interfacial adhesion and toughening mechanisms in an alloy of polycarbonate/ polyethylene [J].Polymer, 1992, 33(22): 4868-4871.
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