| 引用本文: | 陈善华,吴永嘉,金培鹏.硼酸酯改性Mg2B2O5W/PP复合材料界面及其力学性能[J].材料科学与工艺,2012,20(5):106-110.DOI:10.11951/j.issn.1005-0299.20120521. |
| CHEN Shan-hua,WU Yong-jia,JIN Pei-peng.Interfacial bonding and mechanical properties of boric ester-modified Mg2B2O5W/PP composites[J].Materials Science and Technology,2012,20(5):106-110.DOI:10.11951/j.issn.1005-0299.20120521. |
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| 摘要: |
| 为了提高聚丙烯(PP)的强韧性能,采用熔融共混法分别制备了质量分数为0~15% 的Mg2B2O5晶须(MBOw)和硼酸酯偶联剂(BE)改性MBOw填充PP基复合材料,测试了PP及其复合材料的拉伸、冲击性能,并通过红外光谱、接触角测试、扫描电镜分析等对复合材料界面作用机理进行了研究.结果表明:MBOw与BE之间存在化学和物理吸附层；PP与BE处理前后的MBOw之间不存在化学键合；BE改性MBOw/PP复合材料中PP与MBOw之间的粘附功和表面张力之比由BE表面处理前的8.7增至处理后的315.0,明显改善了基体中MBOw的分散性及其界面结合性能,提高了BE改性MBOw/PP复合材料的拉伸及冲击性能. |
| 关键词: 硼酸镁晶须 硼酸酯偶联剂 聚合物基复合材料 界面结合 力学性能 |
| DOI：10.11951/j.issn.1005-0299.20120521 |
| 分类号: |
| 基金项目:国家科技部国际科技合作项目(2009DFA51830)；四川省科技支撑计划(2011FZ0062). |
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| Interfacial bonding and mechanical properties of boric ester-modified Mg2B2O5W/PP composites |
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CHEN Shan-hua1, WU Yong-jia1, JIN Pei-peng2
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1.College of Materials and Chemistry & Chemical Engineering,Chengdu University of Technology,Chengdu 610059,China;2.College of Mechanical Engineering,Qinghai University,Xining 810016,China
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| Abstract: |
| To improve the strength and toughness performance of the polypropylene (PP),the PP composites reinforced with Mg2B2O5w(MBOw) were prepared by melt blending.The effects of coupling agent boric ester(BE)and contents of MBOw(0~15 wt%)on tensile and impact strength of PP and composites are studied.The compatibility,hydrophilicity and morphology of impact fracture surface of MBOw/PP composites were characterized by Fourier transform infrared spectroscopy(FTIR),the contact angle measurements and scanning electron microscopy(SEM),respectively.The results show that both the chemical bonding and physically adsorbed layers exist between MBOw and BE while the chemical bonding do not exist between PP and untreated or BE-treated MBOw,the ratio of adhesion work to interfacial tension between PP and BE-treated MBOw changes from 8.7 to 315.0 between PP and untreated MBOw,which improves the binding force between PP and BE-treated MBOw,and the dispersibility of MBOw in PP significantly.The tensile and impact strengths of the BE-treated MBOw/PP composites increase apparently in comparison to that of the composites filled with untreated MBOw. |
| Key words: Mg2B2O5 whisker boric ester coupling agent polymer-matrix composites interfacial bonding mechanical properties |
