Fracture properties of epoxy/poly(styrene‐<i>co</i>‐allylalcohol) blends

Salazar, A.; Prolongo, S.G.; Rodrı́guez, J.

doi:10.1002/app.26811

Cited by 9 publications

(4 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The key aim of this work was to develop preformed thermoplastic microspheres for use as effective toughening agent for brittle thermosets and to determine the fracture properties of the developed composites. In addition to toughening, epoxy‐poly(styrene) blends have been reported to exhibit higher hygrothermal stability . However, due to the incompatible nature of preformed poly(styrene) (PS) microspheres and epoxy matrix, proper dispersion is an issue, which can be resolved by introducing reactive groups on the surface of the dispersed phase.…”

Section: Introductionmentioning

confidence: 99%

Amine‐functionalized poly(styrene) microspheres as thermoplastic toughener for epoxy resin

et al. 2014

View full text Add to dashboard Cite

In this article, the potential of amine‐functionalized poly(styrene) (PS) microspheres as toughening agent for epoxy resin has been explored. PS microspheres were prepared by suspension polymerization, where the monomer concentration and stirring speed was varied to control the microsphere dimensions (52–183 µm). The obtained microspheres were chemically functionalized with an aim to improve its dispersion within the epoxy matrix. The amine groups generated on the microsphere surface offer a potential site of covalent linkage with the epoxy matrix, thereby resulting in increased compatibility and improved properties. Epoxy composites containing varying amounts of microspheres (1–7% w/w) were prepared and their mechanical properties were evaluated under both quasi‐static as well as dynamic conditions. The amination of poly(styrene) (APS) led to improved dispersion of the rigid microspheres in the epoxy matrix, which was evident from higher impact strength and fracture energies (GIC) as compared to its neat analogs. The izod impact strength and GIC increased by 33% and 150%, respectively, on introduction of 3% APS. This was accompanied with an increase in the tensile modulus and strength of the epoxy resin. Further increase in loading led to agglomeration of the microspheres, which in turn resulted in lowering of impact strength and toughness. Excellent agreement was found between the experimentally measured modulae and the predictions made on the basis of Halpin–Tsai and Lewis–Neilson models. Fracture surface morphology was studied to arrive at the principal toughening mechanisms behind the experimental findings. POLYM. COMPOS., 36:174–183, 2015. © 2014 Society of Plastics Engineers

show abstract

Section: Introductionmentioning

confidence: 99%

Amine‐functionalized poly(styrene) microspheres as thermoplastic toughener for epoxy resin

et al. 2014

View full text Add to dashboard Cite

show abstract

“…The results showed that the fracture toughness ( G IC ) was greatly increased with only 5·0 wt-% CSR particles. The tensile properties and the fracture toughness at moderate high loading rates have been investigated by Salazar et al 19 in the blends formed by the epoxy resin thermoset and CSR (PS is the shell and PA is the core) particles as a modifier. The tensile strength and the deformation at break increased with the CSR particle content whereas the Young's modulus suffered no modification for this specific configuration.…”

Section: Introductionmentioning

confidence: 99%

Coefficient of thermal expansion and mechanical properties at cryogenic temperature of core–shell rubber particle modified epoxy

He¹,

Sang²,

Zhang³

et al. 2014

Plastics, Rubber and Composites

View full text Add to dashboard Cite

In order to obtain epoxy based composite with low coefficient of thermal expansion (CTE) and good mechanical properties at cryogenic temperature (77 K), core–shell rubber (CSR) particles were integrated into epoxy. Fourier transform infrared spectroscopy results showed the occurrence of intermolecular hydrogen bond between the CSR particles and the epoxy matrix. The results of thermomechanical analysis indicate that the CTE of CSR–epoxy composites below Tg reached the minimum of the CSR content of 0·5 wt-%, then followed by an increase when the CSR content was higher than 0·5 wt-%. The CTE value under Tg was decreased 18·89% with 0·5 wt-% CSR content. The tensile strength, Young's modulus and impact strength of CSR–epoxy composites at 77 K all reached a maximum with the CSR content of 0·5 wt-%, followed by a decrease when the CSR content was higher than 0·5 wt-%. The storage modulus of CSR modified epoxy resin in glassy region was higher than that of the neat epoxy resin.

show abstract

“…Under external load, the ability of such materials to resist being torn and bent was limited, leading to rapid expansion of cracks according to the propagation direction of the cracks. These materials presented a typical brittle fracture [ 33 ]. Thus, neat ABPE-10 film was not suitable as a FOLED substrate.…”

Section: Resultsmentioning

confidence: 99%

Transparent and Water-Resistant Composites Prepared from Acrylic Resins ABPE-10 and Acetylated Nanofibrillated Cellulose as Flexible Organic Light-Emitting Device Substrate

et al. 2018

View full text Add to dashboard Cite

Acetylated nanofibrillated cellulose (ANFC)/acrylic resin ABPE-10 composite film was prepared by impregnating ABPE-10 into ANFC films under negative pressure, which can enhance properties of ANFC films by forming an interpenetrating polymer network structure between ABPE-10 and the ANFC film. The ANFC/ABPE-10 composite film met the high performance flexible organic light-emitting diode substrate requirement, even when the ANFC dosage was as high as approximately 70%. The transparency of films with different ANFC dosages significantly increased from 67% (42 µm) to 88% (45 µm), as determined by ultraviolet-visible analysis. The composite film inherited the properties of AFNC, with a low coefficient of thermal expansion and a ductile compact structure. The contact angles of ANFC films increased from 49.2° to 102.9° after dipping in ABPE-10. Additionally, the composite films had good surface smoothness and mechanical properties.

show abstract

Fracture properties of epoxy/poly(styrene‐co‐allylalcohol) blends

Cited by 9 publications

References 34 publications

Amine‐functionalized poly(styrene) microspheres as thermoplastic toughener for epoxy resin

Amine‐functionalized poly(styrene) microspheres as thermoplastic toughener for epoxy resin

Coefficient of thermal expansion and mechanical properties at cryogenic temperature of core–shell rubber particle modified epoxy

Transparent and Water-Resistant Composites Prepared from Acrylic Resins ABPE-10 and Acetylated Nanofibrillated Cellulose as Flexible Organic Light-Emitting Device Substrate

Contact Info

Product

Resources

About