Jia Hang, Liu Cheng, Qiao Yue, Zhang Yu, Fan Kaiyuan, Zhang Manxia, Jian Xigao
State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
Department of Polymer Science & Materials, Dalian University of Technology, Dalian 116024, China.
Polymers (Basel). 2022 Jul 21;14(14):2947. doi: 10.3390/polym14142947.
The interfacial modification of basalt-fiber-reinforced polymer (BFRP) composites is an essential research field and many techniques have been developed to improve the adhesion between basalt fiber (BF) and the matrix. However, most studies were based on the matrixes of general plastics and epoxy resins. In this work, five different chain structures of thermoplastic sizing agents were used to improve the interfacial properties of unidirectional BF-reinforced soluble and high-temperature-resistant poly(phthalazinone ether nitrile ketone) (BF/PPENK) composites. DMA results showed that the poly(ether nitrile) (PEN)-sized BF/PPENK (BF-PEN/PPENK) composite exhibited the optimal interfacial performance, with a storage modulus (') and glass transition temperature () up to 50 GPa and 288 °C, respectively. Moreover, the tensile strength, compressive strength, flexural strength, and interlaminar shear strength of the BF-PEN/PPENK composite reached 778 MPa, 600 MPa, 1115 MPa and 57 MPa, respectively, and increased by 42%, 49%, 20% and 30% compared with the desized BF/PPENK composite. This study provides some suggestions for the design of sizing agents to modify the interface of BF and high-performance thermoplastic resin.
玄武岩纤维增强聚合物（BFRP）复合材料的界面改性是一个重要的研究领域，人们已经开发出许多技术来改善玄武岩纤维（BF）与基体之间的粘结力。然而，大多数研究是基于通用塑料和环氧树脂基体。在这项工作中，使用了五种不同链结构的热塑性上浆剂来改善单向BF增强的可溶性耐高温聚（酞嗪酮醚腈酮）（BF/PPENK）复合材料的界面性能。动态热机械分析（DMA）结果表明，聚醚腈（PEN）上浆的BF/PPENK（BF-PEN/PPENK）复合材料表现出最佳的界面性能，其储能模量（'）和玻璃化转变温度（）分别高达50 GPa和288℃。此外，BF-PEN/PPENK复合材料的拉伸强度、压缩强度、弯曲强度和层间剪切强度分别达到778 MPa、600 MPa、1115 MPa和57 MPa，与未上浆的BF/PPENK复合材料相比分别提高了42%、49%、20%和30%。本研究为设计用于改性BF与高性能热塑性树脂界面的上浆剂提供了一些建议。
