In situ growth of TiO 2 nanoparticles onto PBO fibers via a mussel‐inspired strategy for enhancing interfacial properties and ultraviolet resistance
In situ growth of TiO 2 nanoparticles onto PBO fibers via a mussel‐inspired strategy for enhancing interfacial properties and ultraviolet resistance
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DOI：
10.1002/pc.26205
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发表时间：
2021-07
影响因子：
5.2
通讯作者：
Lei Chen;Zhihua Li;Guangshun Wu;Peng Wang;Tao Wang;Zhi Li;Tonghua Zhang
中科院分区：
文献类型：
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作者：
Lei Chen;Zhihua Li;Guangshun Wu;Peng Wang;Tao Wang;Zhi Li;Tonghua Zhang
在这项工作中，为了同时克服聚（对亚苯基苯并双恶唑）（PBO）纤维较差的界面粘合性和抗紫外线（UV）性能，通过使用受贻贝启发的聚多巴胺（PDA）作为鲁棒材料，通过在纤维表面原位生长二氧化钛（TiO2）纳米粒子来制造一种新的分层增强材料。 反应平台。测量了改性纤维的表面形貌和化学成分，以证明 TiO2 的结合。 TiO2改性后PBO纤维增强环氧树脂复合材料的界面剪切强度提高了57.2%，这是由于表面粗糙度（Ra）和润湿性的增加所致。此外，纤维的热稳定性和复合材料的耐湿热老化性能也得到显着提高。此外，PBO/PDA/Ti表面致密的TiO2涂层具有优异的抗紫外线性能。
In this work, to overcome the poor interfacial adhesion and ultraviolet (UV) resistance of poly(p‐phenylene benzobisoxazole) (PBO) fiber simultaneously, a new hierarchical reinforcement was fabricated byin situgrowing titanium dioxide (TiO2) nanoparticles on the surface of the fiber using mussel‐inspired polydopamine (PDA) as a robust reaction platform. The surface morphologies and chemical compositions of the modified fiber were measured to prove the TiO2binding. The interfacial shear strength of PBO fiber‐reinforced epoxy resin composite had a 57.2% enhancement after TiO2modification, which was caused by increased surface roughness (Ra) and wettability. In addition, the thermal stability of the fiber and hygrothermal aging resistance of the composite were improved remarkably. Moreover, the compact TiO2coating on the surface of PBO/PDA/Ti led to excellent UV resistance.