Study on interlaminar shear properties of PAN/BF core-spun yarn reinforced composites

doi:10.19936/j.cnki.2096-8000.20220228.011

Abstract

Abstract: Basalt fiber (BF) reinforced composites have been widely used in automotive, aviation, industrial buildings and other fields. However, the interlamellar properties of the composites are weak, which lead to the poor overall mechanical properties of BF reinforced composites, and the composites are easy to be layered in the process of application, which shorts their service life. In order to improve the interlaminar properties of BF reinforced composites, polyacrylonitrile (PAN)/BF core-spun yarns were prepared by conjugate electrospinning method with PAN nanofibers coated on the surface of BF. Then, PAN/BF core-spun yarn was woven into fabric and cured with resin to get composites. The interlaminar shear properties of the composites were tested and analyzed by short beam shear test. The results show that compared with BF reinforced composites, the interlaminar shear strength of unidirectional composites and plain composites reinforced with nanofiber core-spun yarns is increased by 11.5% and 8.72%, respectively. In the process of test loading, the load-displacement curve of plain weave fabric reinforced composite is more complicated than that of unidirectional strip fabric reinforced composite, and the load-displacement curve decreases in a stepped way.

Key words: basalt fiber, conjugated electrospinning, nanofiber core-spun yarn, interlaminar shear performance

CLC Number:

TB332

QU Yan-ping, TIAN Hui-xia. Study on interlaminar shear properties of PAN/BF core-spun yarn reinforced composites[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(2): 68-74.

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