Thermoplastic–epoxy interactions and their potential applications in joining composite structures – A review

Deng, Shiqiang; Djukic, Luke P.; Paton, Rowan; Ye, Lin

doi:10.1016/j.compositesa.2014.09.027

Cited by 203 publications

(107 citation statements)

References 103 publications

Supporting

Mentioning

101

Contrasting

Unclassified

Order By: Relevance

“…Several techniques have been introduced for improving the toughness of the epoxy resins which could be divided into two main categories: physical modification (addition of a toughening agent into the epoxy resin) and chemical modification (modification in the chemical structure of the epoxy network) . Some common toughening agents are liquid elastomers, inorganic particles, and thermoplastics . The drawback of physical modification is the phase separation between epoxy and toughening agents .…”

Section: Introductionmentioning

confidence: 99%

Systematic investigation of mechanical properties and fracture toughness of epoxy networks: Role of the polyetheramine structural parameters

Abdollahi

Salimi

Barikani

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

Polyetheramine (PEA)-modified epoxies with various types of PEAs were prepared and respective effects on characteristics of epoxy networks were studied. The used PEAs were polyethylene glycol diamine (PEG-amine) and polypropylene glycol diamine (PPGamine) with two different molecular weights (i.e., 200 and 400 g mol −1 ). According to mechanical tests, the structural parameters of PEAs played an important role in final properties of epoxy/amine systems. PEG 400 -amine and PPG 200 -amine had the highest and lowest effects on the properties of epoxy networks, respectively. Whereas 10 phr PEG 400 -amine increased critical stress intensity factor (K IC ) and critical strain energy release rate (G IC ) of the epoxy up to 82 and 294%, the same number of PPG 200 -amine chains caused to increase the K IC and G IC up to 11 and 34%. This discrepancy could be assigned to higher flexibility index (φ = 26.22), longer chain length (~27 atoms), and higher secondary interactions [δ = 9.69 (cal cm −3 ) 0.5 ] of PEG 400 -amine in comparison with PPG 200 -amine [with φ = 8.08,~10 atoms in chain, and δ = 8.98 (cal cm −3 ) 0.5 ]. Shear yielding as a toughening mechanism was proposed based on microscopy of the crack tips. These in-depth studies could uncover underlying structure-property relationships in a relevant class of PEA-like modifiers, shedding light on the future design of top-performing homogeneous tough polymer networks.

show abstract

Section: Introductionmentioning

confidence: 99%

Systematic investigation of mechanical properties and fracture toughness of epoxy networks: Role of the polyetheramine structural parameters

Abdollahi

Salimi

Barikani

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Excellent toughness and rigidity are necessary properties for high‐performance thermosetting resins . All resins have similar flexural moduli [Figure (a)].…”

Section: Resultsmentioning

confidence: 99%

Facile strategy and mechanism of greatly toughening epoxy resin using polyethersulfone through controlling phase separation with microwave‐assisted thermal curing technique

Deng

Yuan

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

Toughening has been the essential issue for developing high‐performance thermosetting resins. Herein, starting from polyethersulfone (PES) and bisphenol A epoxy resin (EP), a facile strategy is developed to prepare tough resins through controlling phase structure with microwave‐assisted thermal curing. PES/EP resins cured with the assistance of microwave curing (m‐PES/EP) have two major differences compared with those using traditional heat curing (t‐PES/EP), one is high degree of phase separation, and the other is phase separation mechanism. Initial phase separation of all t‐PES/EP resins follows spinodal decomposition mechanism, while those of m‐PES/EP systems with 8 wt% and 18 wt% of PES follow nucleation and growth mechanism. These differences are derived from the fact that microwave curing has much faster phase separation rate and curing reaction rate than thermal curing owing to the higher thermal effect. Differences in phase structure bring different macro performances, and m‐PES/EP systems have higher impact strengths, fracture toughnesses, and flexural strengths than t‐PES/EP resins. This investigation provides a facial and effective way of developing higher performance thermoplastic/thermosetting resin system through controlling phase structure. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48394.

show abstract

“…Continuous fibre-reinforced thermoplastic matrix composites have been increasingly used as structural components in aerospace and automotive industries mainly due to their excellent toughness, weldability, infinite storage life and superior chemical resistance [1][2][3][4]. Economic benefits such as recyclability and time-saving production processes compared to thermosets also make thermoplastics the preferred matrix resins for many fibre composites.…”

Section: Introductionmentioning

confidence: 99%

Effects of thermal residual stress on interfacial properties of polyphenylene sulphide/carbon fibre (PPS/CF) composite by microbond test

Wang

Xu²,

Liu

et al. 2015

J Mater Sci

View full text Add to dashboard Cite

As a result of manufacturing processes, thermal residual stresses often occur in fibre-reinforced polymer composites and affect the fibre/matrix interface properties, e.g. interfacial shear strength (IFSS), which is commonly evaluated by the microbond test. In thermoplastic matrices, thermal residual stresses can be relieved by annealing. In this study, to examine the effect of thermal residual stress on IFSS, microbond tests on both air-quenched (control) and annealed polyphenylene sulphide/carbon fibre samples are conducted. Comparing the pull-out results of the control to the annealed samples subjected to six different annealing temperatures between 80 and 230°C, it is found that the thermal residual stresses in the fibre axial and radial directions are reduced progressively below and can be neglected above 120°C. Thermal residual stresses in the fibre direction can be calculated to explain the microbond test results and construct a master curve for the IFSS. Postdebond frictional shear stresses can also be analysed in terms of the calculated fibre radial thermal residual stresses and debonded fibre morphologies.

show abstract

Thermoplastic–epoxy interactions and their potential applications in joining composite structures – A review

Cited by 203 publications

References 103 publications

Systematic investigation of mechanical properties and fracture toughness of epoxy networks: Role of the polyetheramine structural parameters

Systematic investigation of mechanical properties and fracture toughness of epoxy networks: Role of the polyetheramine structural parameters

Facile strategy and mechanism of greatly toughening epoxy resin using polyethersulfone through controlling phase separation with microwave‐assisted thermal curing technique

Effects of thermal residual stress on interfacial properties of polyphenylene sulphide/carbon fibre (PPS/CF) composite by microbond test

Contact Info

Product

Resources

About