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Synergistically enhanced ultraviolet aging resistance and interfacial adhesion of poly (p‐phenylene benzobisoxazole) fiber with soluble naphthalimide sizing
Polymer Composites ( IF 4.8 ) Pub Date : 2021-02-05 , DOI: 10.1002/pc.25964 Kangyi Lu 1 , Xin Ge 1 , Zhenhai Wei 2 , Gang Li 1, 2 , Xiaoping Yang 1 , Hanyang Liu 3
Polymer Composites ( IF 4.8 ) Pub Date : 2021-02-05 , DOI: 10.1002/pc.25964 Kangyi Lu 1 , Xin Ge 1 , Zhenhai Wei 2 , Gang Li 1, 2 , Xiaoping Yang 1 , Hanyang Liu 3
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Amino‐terminated naphthalimide (NDI) with ultraviolet (UV) absorptivity was synthesized to sizing on poly(p‐phenylene benzobisoxazole) (PBO) fiber surface, and UV aging resistance PBO fiber and interfacial adhesion of their composites was investigated. Compared with pristine PBO fiber, the surface chemical activity and roughness of NDI‐PBO fiber were increased. In comparison with pristine PBO fiber, tensile strength, intrinsic viscosity ([η]), and diameter of NDI‐PBO fiber showed a better retention, and the enhanced UV‐aging resistance was verified by hardly visible macroscopic defects on NDI‐PBO fiber. Meanwhile, transverse fiber bundle test strength of NDI‐PBO fiber composites was promoted by stronger mechanical interlocking and chemical interaction. The synergistic improvement in UV aging resistance and interfacial adhesion of PBO fiber was attributed to undamaged crystal and molecular structure from UV protection effects of NDI layer and strong chemical bonding between reactive groups of NDI and epoxy matrix.
中文翻译：
可溶性萘二甲酰亚胺上浆能协同增强聚对苯撑苯并二恶唑纤维的抗紫外线老化性能和界面粘合力
合成了具有紫外线（UV）吸收性的氨基封端的萘二甲酰亚胺（NDI），在聚对苯撑苯并二恶唑（PBO）纤维表面上施胶，并研究了其抗紫外线老化性和复合材料的界面粘合性。与原始的PBO纤维相比，NDI-PBO纤维的表面化学活性和粗糙度均有所提高。与原始PBO纤维相比，拉伸强度，特性粘度（[ η]），NDI-PBO纤维的直径显示出更好的保留性，并且通过在NDI-PBO纤维上几乎看不到的宏观缺陷验证了增强的抗紫外线老化性能。同时，更强的机械互锁和化学相互作用提高了NDI-PBO纤维复合材料的横向纤维束测试强度。PBO纤维的抗紫外线老化性和界面粘合性的协同提高归因于NDI层的紫外线保护作用以及NDI与环氧基质的反应性基团之间的牢固化学键合，从而使晶体和分子结构完好无损。
更新日期：2021-04-01
中文翻译：
可溶性萘二甲酰亚胺上浆能协同增强聚对苯撑苯并二恶唑纤维的抗紫外线老化性能和界面粘合力
合成了具有紫外线（UV）吸收性的氨基封端的萘二甲酰亚胺（NDI），在聚对苯撑苯并二恶唑（PBO）纤维表面上施胶，并研究了其抗紫外线老化性和复合材料的界面粘合性。与原始的PBO纤维相比，NDI-PBO纤维的表面化学活性和粗糙度均有所提高。与原始PBO纤维相比，拉伸强度，特性粘度（[ η]），NDI-PBO纤维的直径显示出更好的保留性，并且通过在NDI-PBO纤维上几乎看不到的宏观缺陷验证了增强的抗紫外线老化性能。同时，更强的机械互锁和化学相互作用提高了NDI-PBO纤维复合材料的横向纤维束测试强度。PBO纤维的抗紫外线老化性和界面粘合性的协同提高归因于NDI层的紫外线保护作用以及NDI与环氧基质的反应性基团之间的牢固化学键合，从而使晶体和分子结构完好无损。
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