Effects of composition and network structure of the bound sizing on the interphase properties
ICCI-VIII 2000: International Conference on Composite Interfaces; Cleveland, OH; USA; 11-14 Oct. 2000
11 Oct 2000
Glass fiber sizings are mixtures of film former, surfactant, silane coupling agents, and other processing aids that are applied to the fibers during manufacturing. The presence of sizings on glass fiber reinforcements is known to affect the processing and ultimate properties of polymeric composite materials. It has been established that certain components in these sizings are mobile and can dissolve into the matrix phase, while other species remain bound to the fiber surface. In this study, effects of composition and network structure of the bound portion of sizing on properties of the interphase region are investigated. Epoxy-amine resin system and compatible sized glass fibers were used. The composition of the bound sizing was determined using burnout test, acetone extraction technique, and nuclear magnetic resonance (NMR) spectroscopy. It was found that for this system the bound sizing is mainly composed of silane (87% by weight) and practically all of silane coupling agent was incorporated into the bound portion of the sizing. Hence, a model compound that closely resembles the bound sizing material was synthesized and incorporated into a resin matrix. Differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) techniques were used to characterize the thermal transition temperatures and elastic response of the neat resin and the composite sample. The properties of the model interphase material were obtained using the DMA results and both Takayanagi model and McGee and McCulloguh's improved "C-Combining Rule".
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- Effects of composition and network structure of the bound sizing on the interphase properties
- S ZiaeeM TanogluG PalmeseS McKnightJ Gillespie
- ICCI-VIII 2000: International Conference on Composite Interfaces; Cleveland, OH; USA; 11-14 Oct. 2000
- ICCI-VIII 2000: International Conference on Composite Interfaces (Cleveland, Ohio, United States, 11 Oct 2000 - 14 Oct 2000)
- Conference proceeding
- English
- Chemical and Biological Engineering
- 991019201493804721