功能化石墨烯/埃洛石纳米管对聚丙烯的协同强韧化改性研究

doi:10.11901/1005.3093.2018.664

材料研究学报

2019, Vol. 33

Issue (7): 505-514 DOI: 10.11901/1005.3093.2018.664

研究论文

本期目录 | 过刊浏览

功能化石墨烯/埃洛石纳米管对聚丙烯的协同强韧化改性研究

王正君¹,刘虹财¹,郭怡¹,卞军¹(

),李建保¹,蔺海兰¹(

),鲁云²

1. 西华大学材料科学与工程学院成都 610039
2. 千叶大学科学与工程研究院机械工程系千叶 262-8522 日本

Synergistic Strengthening-Toughening Modification of Polypropylene with Functional Graphene/Halloysite Nanotubes

Zhengjun WANG¹,Hongcai LIU¹,Yi GUO¹,Jun BIAN¹(

),Jianbao LI¹,Hailan LIN¹(

),Yun LU²

1. College of Materials Science and Engineering, Xihua University, Chengdu 610039, China
2. Department of Mechanical Engineering, Graduate School of Science and Engineering, Chiba University, Chiba 262-8522, Japan

引用本文:

王正君,刘虹财,郭怡,卞军,李建保,蔺海兰,鲁云. 功能化石墨烯/埃洛石纳米管对聚丙烯的协同强韧化改性研究[J]. 材料研究学报, 2019, 33(7): 505-514.
Zhengjun WANG, Hongcai LIU, Yi GUO, Jun BIAN, Jianbao LI, Hailan LIN, Yun LU. Synergistic Strengthening-Toughening Modification of Polypropylene with Functional Graphene/Halloysite Nanotubes[J]. Chinese Journal of Materials Research, 2019, 33(7): 505-514.

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摘要:

以功能化氧化石墨烯(GO)-埃洛石纳米管(HNTs)杂化材料(GO@HNTs)为纳米填料,以聚丙烯(PP)为基体,通过熔融共混法制备了不同GO@HNTs 含量的GO@HNTs/PP纳米复合材材料,并对所得杂化填料和PP纳米复合材料的结构与性能进行系统研究。研究结果表明,功能化GO与HNTs之间存在化学相互作用,二者之间形成的“屏障效应”抑制了彼此在PP基体中的团聚。仅添加0.5%GO@HNTs杂化纳米填料后,PP复合材料的拉伸强度和冲击强度分别较纯PP提高了17.5%和80.4%,与单独添加相同含量的GO或HNTs所得复合材料的力学性能相比,GO@HNTs杂化纳米填料对PP基体具有明显的协同增强增韧改性作用。与纯PP相比,GO@HNTs/PP试样表现出更高的储能模量、损耗模量和玻璃化转变峰值。由于GO@HNTs的“异相成核效应”和“物理热阻效应”,有效提高了PP纳米复合材料的结晶温度、熔融温度、结晶度和耐热分解温度。

关键词 ：复合材料, 聚丙烯(PP), 石墨烯, 埃洛石纳米管, 性能

Abstract：

Nanocomposites of GO@HNTs/PP were prepared through melt blending method with polypropylene (PP) as matrix and hybrid nanofillers (GO@HNTs) composed of functionalized graphene oxide (GO) and halloysite nanotubes (HNTs) as filler. The structures and properties of the prepared hybrid nanofillers and PP nanocomposites were systematically investigated. Results show that there is chemical interactions between functionalized GO and HNTs, resulting in formation a "barrier effect" between them and inhibit the aggregation of the two species in the PP matrix. The tensile strength and impact strength of PP nanocomposites with 0.5% GO@HNTs hybrid nano-filler increased by 17.5% and 80.4%, respectively, compared with those of pure PP. Compared with the mechanical properties of composites prepared by adding the same content GO or HNTs alone, GO@HNTs hybrid nano-filler had obvious synergistic strengthening-toughening effect on the PP matrix. GO@HNTs/PP exhibited higher storage modulus, loss modulus and glass transitional temperatures than those of pure PP. The crystallization temperature, melting temperature, crystallinity and thermal decomposition temperature of PP nanocomposites are effectively increased due to the “heterogeneous nucleation effect” and “physical insulation effect” of GO@HNTs.

Key words： Composite Polypropylene (PP) Graphene Halloysite Nanotube (HNTs) Properties

收稿日期: 2018-11-19

ZTFLH:

TQ325.1+4

基金资助:国家教育部春晖计划合作项目(Z2018088);国家教育部春晖计划合作项目(Z2017070);西华大学大健康管理促进中心开放课题基金(DJKG2019-002);西华大学“西华杯”大学生大创项目(2019051);创新创业环境下“大材料学科”专业综合改革与实践教学团队项目(05050028)

作者简介: 王正君,男,1991年生,硕士生

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https://www.cjmr.org/CN/10.11901/1005.3093.2018.664 或 https://www.cjmr.org/CN/Y2019/V33/I7/505

图1 GO (0.05 mg/mL)、GO-g-TA (0.05 mg/mL), HNTs (0.05 mg/mL)、GO@HNTs (0.05 mg/mL) 纳米杂化填料的紫外-可见光谱曲线及GO@HNTs通过线性叠加关系耦合所得吸收强度理论变化曲线

图2 NGP、GO、GO-g-TA、HNTs和GO@HNTs纳米杂化填料的红外光谱图

图3 NGP、GO、GO-g-TA、HNTs和 GO@HNTs 纳米杂化填料的拉曼光谱图

图4 NGP、GO,GO-g-TA、HNTs和GO@HNTs杂化纳米填料的X射线衍射图谱

图5 填料的SEM照片

图6 纯PP及复合材料的SEM照片

图7 纯PP和不同GO@HNTs杂化纳米填料含量的GO@HNTs/PP 纳米复合材料的X射线衍射图

图8 PP纳米复合材料的典型力学性能

图9 纯PP和不同GO@HNTs杂化纳米填料含量的GO@HNTs/PP 纳米复合材料的动态力学性能

表1 纯PP和PP纳米复合材料的TGA测试结果

图10 纯PP和不同GO@HNTs杂化纳米填料含量的GO@HNTs/PP 纳米复合材料的DSC曲线

表2 纯PP和PP纳米复合材料的DSC测试结果

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