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首页> 外文期刊>Applied Surface Science >Influence of coupling agent chain lengths on interfacial performances of polyarylacetylene resin and silica glass composites
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Influence of coupling agent chain lengths on interfacial performances of polyarylacetylene resin and silica glass composites

机译：偶联剂链长对聚芳基乙炔树脂与石英玻璃复合材料界面性能的影响

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摘要

The influence of chain lengths on interfacial performances ofpolyarylacetylene (PAA)/silica glass composites was studied. In order to obtain different chain lengths on substrates, methyltrimethoxysilane, propyltrimethoxysilane, octyltrimethoxysilane and dodecyltrimethoxysilane were grafted onto silica glass surface. Topographies of silica glass surface and the wetting ability of PAA resin on silica glass surface were characterized by atomic force microscopy (AFM) and surface free energy along with contact angles, respectively. At the same time, the interfacial adhesion was evaluated by shear strength testing. The failure mechanisms of composites were also analyzed by fracture morphologies. The results of the study indicate that with chain lengths of coupling agents on silica glass surface increasing, interfacial shear strengths of PAA/silica glass composites increase, while the wetting ability of PAA resin on silica glass surface decreases. The main mechanism for the improvement of the interfacial adhesion is physical entanglement interaction between the chain of coupling agent and the chain of PAA resin.
机译：研究了链长对聚芳基乙炔（PAA）/二氧化硅玻璃复合材料界面性能的影响。为了在基底上获得不同的链长，将甲基三甲氧基硅烷，丙基三甲氧基硅烷，辛基三甲氧基硅烷和十二烷基三甲氧基硅烷接枝到二氧化硅玻璃表面上。分别通过原子力显微镜（AFM）和表面自由能以及接触角来表征二氧化硅玻璃表面的形貌和PAA树脂在二氧化硅玻璃表面上的润湿能力。同时，通过剪切强度测试评估界面粘附力。还通过断裂形态分析了复合材料的破坏机理。研究结果表明，随着偶联剂在二氧化硅玻璃表面的链长的增加，PAA /二氧化硅玻璃复合材料的界面剪切强度增加，而PAA树脂在二氧化硅玻璃表面的润湿能力降低。改善界面粘附力的主要机理是偶联剂链与PAA树脂链之间的物理缠结相互作用。

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