This study demonstrated that the addition of dissolvable polyether sulfone fibers to the interlaminar area of carbon fiber/epoxy composites can effectively increase the toughness with very high accuracy. Resin film infusion (RFI) is used to fabricate composite structures. RFI was applied to obtain polyether sulfone as an interleaf of chopped fibers between fabric piles of carbon fibers. The thermoplastic polyether sulfone fiber dissolved in the epoxy when it was cured at a high temperature. A phase-separated morphology with a polyether sulfone-rich secondary phase was formed during the curing process. Experimental results indicated that GIc, which is the average value of Mode-I fracture toughness, was increased fivefold with the addition of 10 wt% polyether sulfone fiber (with respect to the gross content of the matrix). No detrimental effects were observed in other characteristics such as thermal stability, Young’s modulus, and tensile strength. In addition, the thermal and mechanical characteristics of neat epoxy–polyether sulfone blends were analyzed for comparison.
WongDWYLinLMcGrailPT, et al.Improved fracture toughness of carbon fibre/epoxy composite laminates using dissolvable thermoplastic fibres. Compos A Appl Sci2010; 41(6): 759–767.
2.
Di PasqualeGMottoORoccaA, et al.New high-performance thermoplastic toughened epoxy thermosets. Polymer1997; 38(17): 4345–4348.
3.
WuZGaoSChenL, et al.Electrically insulated epoxy nanocomposites reinforced with synergistic core-shell SiO2@MWCNTs and montmorillonite bifillers. Macromol Chem Phys2017; 218(23): 1700357.
4.
ZhangYZhaoMZhangJ, et al.Excellent corrosion protection performance of epoxy composite coatings filled with silane functionalized silicon nitride. J Polym Res2018; 25: 130.
5.
GuoJSongHLiuH, et al.Polypyrrole-interface-functionalized nano-magnetite epoxy nanocomposites as electromagnetic wave absorbers with enhanced flame retardancy. J Mater Chem C2017; 5(22): 5334–5344.
6.
ZhaoCXiaoJHuangW, et al.Layup quality evaluation of fiber trajectory based on prepreg tow deformability for automated fiber placement. J Reinf Plast Compos2016; 35(21): 1576–1585.
7.
ZhaoCWangBXiaoJ. Macroscopic characterization of fiber micro-buckling and its influence on composites tensile performance. J Reinf Plast Compos2016; 36(3): 196–205.
8.
ChuCZJXWangTXB. An experimental study of the influence of in-plane fiber waviness on unidirectional laminates tensile properties. Appl Compos Mater2017; 24: 1321–1337.
ZhaoMMengLMaL, et al.Layer-by-layer grafting CNTs onto carbon fibers surface for enhancing the interfacial properties of epoxy resin composites. Compos Sci Technol2018; 154: 28–36.
11.
HuZZhangDLuF, et al.Multistimuli-responsive intrinsic self-healing epoxy resin constructed by host–guest interactions. Macromolecules2018; 51(14): 5294–5303.
12.
WangCZhaoMLiJ, et al.Silver nanoparticles/graphene oxide decorated carbon fiber synergistic reinforcement in epoxy-based composites. Polymer2017; 131: 263–271.
13.
WongDWYZhangHBilottiE, et al.Interlaminar toughening of woven fabric carbon/epoxy composite laminates using hybrid aramid/phenoxy interleaves. Compos A Appl Sci2017; 101: 151–159.
14.
HsiehTChenWChiangC, et al.Environmental aging effect on interlaminar properties of graphene nanoplatelets reinforced epoxy/carbon fiber composite laminates. J Reinf Plast Compos2017; 37: 1177–1190.
15.
LeeBLeongKHHerszbergI. Effect of weaving on the tensile properties of carbon fibre tows and woven composites. J Reinf Plast Compos2001; 20(8): 652–670.
16.
SuiXShiJYaoH, et al.Interfacial and fatigue-resistant synergetic enhancement of carbon fiber/epoxy hierarchical composites via an electrophoresis deposited carbon nanotube-toughened transition layer. Compos A Appl Sci2017; 92: 134–144.
17.
TehSFLiuTWangL, et al.Fracture behaviour of poly(ethylene terephthalate) fiber toughened epoxy composites. Compos A Appl Sci2005; 36(8): 1167–1173.
18.
NingHLiYLiJ, et al.Toughening effect of CB-epoxy interleaf on the interlaminar mechanical properties of CFRP laminates. Compos A Appl Sci2015; 68: 226–234.
19.
ZhangJDengSWangY, et al.Role of rigid nanoparticles and CTBN rubber in the toughening of epoxies with different cross-linking densities. Compos A Appl Sci2016; 80: 82–94.
20.
Awang NgahSTaylorAC. Toughening performance of glass fibre composites with core–shell rubber and silica nanoparticle modified matrices. Compos A Appl Sci2016; 80: 292–303.
21.
PokhmurskaMVZinIMHumenetskiTV, et al.Study of curing of epoxy-petroleum compositions by thermal analysis methods. Mater Lett1995; 24(1): 53–57.
22.
JianRWangPDuanW, et al.A facile method to flame-retard epoxy resin with maintained mechanical properties through a novel P/N/S-containing flame retardant of tautomerization. Mater Lett2017; 204: 77–80.
23.
HouLWuYGuoB, et al.Degeneration and damage mechanism of epoxy-based shape memory polymer under 1 MeV electron irradiation. Mater Lett2018; 222: 37–40.
24.
ZhouJChengCJiangM, et al.Polyethersulfone melt-spun fibers plasticized with epoxy oligomer. Mater Lett2018; 210: 263–266.
25.
LuoQMaHHouQ, et al.All-carbon-electrode-based endurable flexible perovskite solar cells. Adv Funct Mater2018; 28(11): 1706777.
26.
GuanXZhengGDaiK, et al.Carbon nanotubes-adsorbed electrospun PA66 nanofiber bundles with improved conductivity and robust flexibility. ACS Appl Mater Inter2016; 8(22): 14150–14159.
27.
HuCLiZWangY, et al.Comparative assessment of the strain-sensing behaviors of polylactic acid nanocomposites: reduced graphene oxide or carbon nanotubes. J Mater Chem C2017; 5(9): 2318–2328.
28.
SunKXiePWangZ, et al.Flexible polydimethylsiloxane/multi-walled carbon nanotubes membranous metacomposites with negative permittivity. Polymer2017; 125: 50–57.
29.
WuZCuiHChenL, et al.Interfacially reinforced unsaturated polyester carbon fiber composites with a vinyl ester-carbon nanotubes sizing agent. Compos Sci Technol2018; 164: 195–203.
30.
LinCHuLChengC, et al.Nano-TiNb2O7/carbon nanotubes composite anode for enhanced lithium-ion storage. Electrochim Acta2018; 260: 65–72.
31.
LiZWangBQinX, et al.Superhydrophobic/superoleophilic polycarbonate/carbon nanotubes porous monolith for selective oil adsorption from water. ACS Sustain Chem Eng2018; 6: 13747–13755.
32.
ZhangKLiGFengL, et al.Ultralow percolation threshold and enhanced electromagnetic interference shielding in poly(l-lactide)/multi-walled carbon nanotube nanocomposites with electrically conductive segregated networks. J Mater Chem C2017; 5(36): 9359–9369.
33.
BishtADasguptaKLahiriD. Effect of graphene and CNT reinforcement on mechanical and thermomechanical behavior of epoxy: a comparative study. J Appl Polym Sci2018; 135(14): 46101.
34.
JamaliNRezvaniAKhosraviH, et al.Effects of fly ash in composites fabricated by injection molding. Polym Compos2018; 33(14): 1351–1359.
LiuPNgVMHYaoZ, et al.Facile synthesis and hierarchical assembly of flowerlike NiO structures with enhanced dielectric and microwave absorption properties. ACS Appl Mater Inter2017; 9(19): 16404–16416.
37.
LiuPNgVMHYaoZ, et al.Microwave absorption properties of double-layer absorbers based on Co 0.2 Ni 0.4 Zn 0.4 Fe 2 O 4 ferrite and reduced graphene oxide composites. J Alloys Compd2017; 701: 841–849.
38.
YaoRYaoZZhouJ. Preparation, microstructure, and thermal properties of phenolic cryogel composite plates. Polym Compos2017; 38(10): 2294–2300.
39.
WangJXueZLiY, et al.Synergistically effects of copolymer and core-shell particles for toughening epoxy. Polymer2018; 140: 39–46.
40.
WuXYangXYuR, et al.Highly crosslinked and uniform thermoset epoxy microspheres: preparation and toughening study. Polymer2018; 143: 145–154.
41.
LaiWHsiaR. Epoxy toughening using self-assembled nanofibrillar scaffolds formed by organogels. Polymer2018; 147: 74–80.
42.
ASTM D638-03 (2003) Standard test method for tensile properties of plastics.
43.
ASTM D3039-00 (2000) Standard test method for tensile properties of polymer matrix composite materials.
44.
ASTM D 5045-99 (1999) Standard test methods for plane-strain fracture toughness and strain energy release rate of plastic materials.
45.
ASTM D5528-01 (2001) Standard test method for mode I interlaminar fracture toughness of unidirectional fibre-reinforced polymer matrix composites.
46.
ASTM D2344-00 (2000) Standard test method for short-beam strength of polymer matrix composite materials and their laminates.
