Fracture assessment of polyacrylonitrile nanofiber-reinforced epoxy adhesive

被引：38

作者：

Razavi, N. ^{[1
]}

Neisiany, R. Esmaeely ^{[2
,3
]}

Ayatollahi, M. R. ^{[4
]}

Ramakrishna, S. ^{[3
]}

Khorasani, S. Nouri ^{[2
]}

Berto, F. ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol NTNU, Dept Mech & Ind Engn, Richard Birkelands Vei 2b, N-7491 Trondheim, Norway

[2] Isfahan Univ Technol, Dept Chem Engn, Esfahan 8415683111, Iran

[3] Natl Univ Singapore, Dept Mech Engn, Ctr Nanofibers & Nanotechnol, Singapore 117576, Singapore

[4] Iran Univ Sci & Technol, Sch Mech Engn, Ctr Excellence Expt Solid Mech & Dynam, Fatigue & Fracture Lab, Tehran 16846, Iran

来源：

THEORETICAL AND APPLIED FRACTURE MECHANICS | 2018年 / 97卷

关键词：

Adhesive joints; Electrospun polyacrylonitrile nanofibers; Energy release rate; Fracture energy; ENCAPSULATION; COMPOSITE; GRAPHENE;

D O I：

10.1016/j.tafmec.2017.07.023

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Electrospun polyacrylonitrile (PAN) nanofibers were incorporated in an epoxy-based adhesive layer to improve the adhesive joint's mechanical performance. The morphological study of the electrospun PAN nanofibers revealed that the fabricated nanofibers were smooth, continuous, and without beads. The average diameter of the nanofibers was determined to be 362 +/- 87 inn. The Double Cantilever Beam (DCB) specimens were tested and the fracture energies were determined for the unreinforced and reinforced adhesives. The outstanding reinforcing capability of PAN nanofibers was demonstrated by significant improvements in fracture energy of the adhesive containing PAN nanofibers. A maximum improvement of 127% in the mode I fracture energy of adhesive was achieved by incorporating 2 g/m(2) of PAN nanofibers into the adhesive layer. Moreover, the morphology of the fracture surfaces was examined using the Scanning Electron Microscopy (SEM) technique to evaluate the toughening mechanisms resulting from this improvement.

引用

页码：448 / 453

页数：6

共 32 条

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