S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Chemical and Biological Engineering (화학생물공학부) Journal Papers (저널논문_화학생물공학부)
Effect of Surface Treatment on the Mechanical Properties of Glass Fiber/Vinylester Composites
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- Issue Date
- Journal of Applied Polymer Science 2004, 91, 3730–3736
- ABSTRACT: To study the effect of surface treatment on the
mechanical properties of glass fiber/vinylester composites,
glass fiber was surface-treated with polybutadiene (PB),
methacryloxypropyltrimethoxysilane ( -MPS), and -MPSmodified
polybutadiene (PB/ -MPS). The relationship between
the interfacial strength and the impact strength of glass
fiber/vinylester composites was also examined. PB/ -MPS
was synthesized as a new surface modifier. PB/ -MPS-treated
composites exhibited the optimum concentration at which the
flexural strength and the interlaminar shear strength (ILSS)
were maximized. This was related to the role of PB/ -MPS in
three interphase regions between the fiber and the matrix.
Considering the relationship between the interfacial strength
and the impact strength of the composites, the propagation
energy and total energy showed a different trend in three
regions. In region A, the propagation energy and total energy
increased with an increasing shear strength, indicating that the
adequate interfacial strength was required for improving the
impact strength of the composites. In region B, the propagation
energy and total energy decreased with an increasing shear
strength. Most of impact energy was absorbed through fiber
pullout and delamination. In region C, the fiber breakage was
the dominant failure mode of the composites.
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