EFFECT OF HYGROTHERMAL FATIGUE ON DYNAMIC MECHANICAL PROPERTIES AND MORPHOLOGY OF NEAT AND GLASS-REINFORCED VINYL ESTER COMPOSITES.

Research output: Contribution to journalArticle

Abstract

In the reported experiments, a neat vinyl ester and a series of glass-reinforced vinyl-ester composites were prepared and investigated. All specimens were exposed to various cyclic hygrothermal fatigue treatments, which differed from one another by the temperature and the duration of a cycle. Changes induced by the hygrothermal fatigue were studied by weight-gain measurements, dynamic-mechanical analysis, and electron microscopy. The T//g of fatigued composites were found to be determined by the amount of moisture absorbed within the resin network. The overall weight gain, however, also includes the moisture absorbed within the resin-reinforcement interphase and is a function of the type of composite, the surface treatment of the reinforcement, and the temperature and duration of the fatigue cycle. A semiquantitative concept of the mechanism of water absorption in thermoset-matrix composites has been advanced on the morphological level in order to interpret the experimental results.

Original languageEnglish (US)
Pages (from-to)73-80
Number of pages8
JournalPolymer Composites
Volume4
Issue number1
StatePublished - Jan 1983

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Esters
Fatigue of materials
Glass
Mechanical properties
Composite materials
Reinforcement
Moisture
Resins
Gain measurement
Thermosets
Weighing
Water absorption
Dynamic mechanical analysis
Electron microscopy
Surface treatment
Temperature
Experiments

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry
  • Polymers and Plastics

Cite this

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title = "EFFECT OF HYGROTHERMAL FATIGUE ON DYNAMIC MECHANICAL PROPERTIES AND MORPHOLOGY OF NEAT AND GLASS-REINFORCED VINYL ESTER COMPOSITES.",
abstract = "In the reported experiments, a neat vinyl ester and a series of glass-reinforced vinyl-ester composites were prepared and investigated. All specimens were exposed to various cyclic hygrothermal fatigue treatments, which differed from one another by the temperature and the duration of a cycle. Changes induced by the hygrothermal fatigue were studied by weight-gain measurements, dynamic-mechanical analysis, and electron microscopy. The T//g of fatigued composites were found to be determined by the amount of moisture absorbed within the resin network. The overall weight gain, however, also includes the moisture absorbed within the resin-reinforcement interphase and is a function of the type of composite, the surface treatment of the reinforcement, and the temperature and duration of the fatigue cycle. A semiquantitative concept of the mechanism of water absorption in thermoset-matrix composites has been advanced on the morphological level in order to interpret the experimental results.",
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N2 - In the reported experiments, a neat vinyl ester and a series of glass-reinforced vinyl-ester composites were prepared and investigated. All specimens were exposed to various cyclic hygrothermal fatigue treatments, which differed from one another by the temperature and the duration of a cycle. Changes induced by the hygrothermal fatigue were studied by weight-gain measurements, dynamic-mechanical analysis, and electron microscopy. The T//g of fatigued composites were found to be determined by the amount of moisture absorbed within the resin network. The overall weight gain, however, also includes the moisture absorbed within the resin-reinforcement interphase and is a function of the type of composite, the surface treatment of the reinforcement, and the temperature and duration of the fatigue cycle. A semiquantitative concept of the mechanism of water absorption in thermoset-matrix composites has been advanced on the morphological level in order to interpret the experimental results.

AB - In the reported experiments, a neat vinyl ester and a series of glass-reinforced vinyl-ester composites were prepared and investigated. All specimens were exposed to various cyclic hygrothermal fatigue treatments, which differed from one another by the temperature and the duration of a cycle. Changes induced by the hygrothermal fatigue were studied by weight-gain measurements, dynamic-mechanical analysis, and electron microscopy. The T//g of fatigued composites were found to be determined by the amount of moisture absorbed within the resin network. The overall weight gain, however, also includes the moisture absorbed within the resin-reinforcement interphase and is a function of the type of composite, the surface treatment of the reinforcement, and the temperature and duration of the fatigue cycle. A semiquantitative concept of the mechanism of water absorption in thermoset-matrix composites has been advanced on the morphological level in order to interpret the experimental results.

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