Publication detail

Short-beam strength of GF/polyester composites and their durability to aqueous environments

Bálková, R., Čech, V., Přikryl, R., Vaněk, J.

Original Title

Type

conference paper

Language

English

Original Abstract

Pultruded and hand lay-up glass fiber (GF)/polyester composites have been exposed to cold (25 °C) and hot (98 °C) distilled water for 1 year and 60 hours, respectively, to evaluate an interfacial contribution to hygrothermal behavior of the composites reinforced by commercially sized (silane coupling agents) and unsized glass fibers. Short beam strength, used to characterize an interfacial degradation on macroscopic scale, decreased by about 20 % and 50 % after one-year exposure in cold water and 60-h exposure in hot water, respectively, for composites reinforced by sized fibers. Commercial sizing formed strong interfaces and the absorbed moisture influenced just the matrix morphology and its structure inspected by SEM. However, long-term water exposure or hot water deteriorated a joint at the interface and caused decrease of shear properties. Hot water accelerated water diffusion process as evidenced by higher diffusion coefficients. A steeper decrease of short beam strength with time was observed for all samples exposed to hot water with respect to cold one.

Keywords

key

Authors

Bálková, R., Čech, V., Přikryl, R., Vaněk, J.

RIV year

2004

Released

1. 1. 2004

Location

Maďarsko

Pages from

Pages to

Pages count

BibTex

@inproceedings{BUT17604,
  author="Radka {Bálková} and Vladimír {Čech} and Radek {Přikryl} and Jan {Vaněk}",
  title="Short-beam strength of GF/polyester composites and their durability to aqueous environments",
  booktitle="Proc. Reinforced Plastics 2004",
  year="2004",
  pages="4",
  address="Maďarsko"
}