Page 74 - 《橡塑技术与装备》2019年8期(4月下半月塑料)
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橡塑技术与装备(塑料)                             CHINA RUBBER/PLASTICS  TECHNOLOGY  AND EQUIPMENT(PLASTICS)

             身很脆的缺点,拉伸强度和断裂伸长率可以得到加入                               2005,21(3):141~144.
             纳米二氧化硅材料的韧性提高。                                    [10]  高延敏,赵琴,李磊,等 . 小分子增塑剂对热塑性淀粉
                                                                   中氢键的作用 [J].  江苏科技大学学报(自然科学版 ),
                   (3)聚乳酸的含量对淀粉 / 聚乳酸共混材料的力                        2012,26(3):245~248.
             学性能也有很大的影响,通过改变聚乳酸的含量,聚                           [11]  吴苏琴,李艳霞,龚磊,等 . 聚乳酸的研究现状及发展前景 [J].
                                                                   江西化工,2007,21(4):6~8.
             乳酸的含量增加会使共混材料变脆,聚乳酸的最佳的
                                                               [12]  肖伟娜,黄雪,冯光炷,等 . 聚乳酸增韧改性研究进展 [J]. 化
             添加量为 20%,这个添加量的情况下材料有一定的断
                                                                   工进展,2011,30(3):578~582.
             裂伸长效果。                                            [13]  沈一丁,赖小娟 .  聚乙二醇改性淀粉 / 聚乳酸薄膜的结构与性
                                                                   质研究 [J]. 现代化工,2006,26(5):35~39.
                                                               [14]  杨惠,刘文明,黄小强,等 .  聚乳酸合成及改性研究进展 [J].
             参考文献                                                  合成纤维,2008,37(3):1~5.
             [1]   刘伯业,陈复生,何乐,等 . 可生物降解材料及其应用研究进
                                                               [15]  马骁飞,于九皋 .  淀粉 / 聚酯体系生物可降解材料 [J].  高分子
                 展 [J]. 塑料科技,2010,38(11):87~90.
             [2]   杨晋辉,于九皋,马骁飞 .  热塑性淀粉的制备 , 性质及应用研                通报,2003,(2):15~22.
                                                               [16]  Gupta B,Revagade N,Hilborn J. Poly  (lactic acid)
                 究进展 [J]. 高分子通报,2006,26(11):78~84.
                                                                   fiber:an overview [J]. Progress in polymer science ,
             [3]   王金永,赵有斌,林亚玲,等 . 淀粉基可降解塑料的研究进展                   2007,32(4):455~482.
                 [J]. 塑料工业,2011,39(5):13~17.
                                                               [17]  魏巍,魏益民,张波 .  淀粉 / 聚乳酸共混可降解材料研究进展
             [4]   孙炳新,马涛 . 全淀粉热塑性生物降解材料研究进展 [J]. 食品               [J]. 包装工程,2007,28(1):23~26.
                 工业科技,2008,29(9):283~285.
                                                               [18]  吴海艳,周莉,臧树良 . 纳米二氧化硅表面改性的研究 [J]. 矿
             [5]   王 佩 璋, 王 澜 .  淀 粉 的 热 塑 性 研 究 [J].  中 国 塑 料,    冶,2010,19(4):49~52.
                 2002,16(4):39~43.
                                                               [19]  和平生 .  热塑性淀粉 / 聚乳酸共混材料的制备、表征及性能研
             [6]   陈庆,郭木 . 全淀粉热塑性塑料的开发应用 [J]. 化工新型材料,              究 [D]. 武汉 :华中农业大学,2011.
                 2003,31(2):39~41.
                                                               [20]  李桂颖,梁明 .  偶联剂的应用及新进展 [J].  化工时刊,
             [7]   熊汉国,吴方元,王芳,等 . 热塑性淀粉的研究 [J]. 食品与发               1999,13(3):21~25.
                 酵工业,1999,25(6):24~27.
                                                               [21]  李勇锋,陆冲,程树军,等 .  钛酸四丁酯增韧改性聚乳酸 / 淀
             [8]   刘娅,赵国华,陈宗道,等 . 淀粉塑化机理究进展水 [J]. 粮食               粉共混材料 [J]. 功能高分子学报,2007,19(3):304~308.
                 与油脂,2003,19(4):8-9.
                                                               [22]  周光大,曹‐,姚臻,等 . 同向双螺杆挤出机的停留时间分布
             [9]   吴俊,文庆珍,谢守和,等 .  淀粉粒度效应对微细化淀粉 /
                                                                   及填充度 [J]. 化工学报,2006,57(12):3 025~3 028.
                 LDPE 共混体系相态结构的影响 [J].  高分子材料科学与工程,
                Study on mechanical properties of nano-SiO /starch/polylactic acid
                                                                           2
                                               ternary composites


                                                       Ma Diaodiao
                            (Yulin Natural Gas Chemical Industry Co. LTD., Yulin 718100, Shaanxi, China)

                 Abstract: In this paper, the toughening modification of starch and the effect of blending modification
             on mechanical properties were studied. Firstly, starch/polylactic acid blends with different contents were
             prepared. The blends were extruded and granulated by twin-screw extruder. The blends were injected into
             splines by injection molding machine. The mechanical properties of the injection molded samples were
             tested, and the tensile strength and elongation at break were tested. And the best processing technology
             was received by choosing the materials with the best performance. The results showed that in starch/
             polylactic acid blend system, with the increase of coupling agent and nano-silica, the blend system had
             a curve shape change. With the increase of polylactic acid content, the elongation at break increased
             and then decreased. Thus, the optimum ratio of coupling agent and nano-silica and the optimum ratio of
             starch and glycerol content were obtained. The mechanical properties of the modified starch material were
             better than those of the untreated starch material. It had obvious elongation at break and alleviated the low
             elongation at break of the whole starch material.
                 Key words: degradation property; thermal property; tensile property; esterification temperature; molar
             ratio of alkyd to acid
                                                                                                        (R-03)

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