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The Use of a Mixed Coupling Agent System to improve the Performance of Polypropylene-Based Composites reinforced with short-glass-fibre mat

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Issue Date
1998
Publisher
Elsevier
Citation
Composites Science and Technology 1997, 57, 1559-1569
Keywords
A glss fibresA coupling agentsB mechanical propertyB impact behaviourthermoplastic matrix
Abstract
In order to improve the mechanical properties of composites consisting of polypropylene reinforced with mats of short glass fibres, the fibre surface was treated with a silane coupling agent, N-β(N-vinylbenzylaminoethyl)-γ-aminopropyl trimethoy silane hydrogen chloride(STS), and a titanate coupling agent, isopropyltriisostearoyl titanate(TTS). The flexural properties and the impact absorption energy of these composites were measured as a function of coupling agent concentration. STS-only treatment of the fibre surface enhanced the flexural strength and the flexural modulus of the composite, while TTS-only treatment decreased the flexural strength and the flexural modulus. The improved flexural properties of the composite brought about by the STS-only treatment were obtained at the cost of its impact absorption energy, whereas TTS-only treatment showed the inverse characteristics. However, in a mixed coupling agent system, the impact absorption energy of the composite was improved without a reduction in the flexural properties. A morphological study of the fracture surfaces of the composite after impact testing, void content measurement and single-fibre fragmentation test were also carried out to understand the interfacial phenomena of the surface treated composites.
ISSN
0266-3538
Language
English
URI
https://hdl.handle.net/10371/61373
DOI
https://doi.org/10.1016/S0266-3538(97)00086-9
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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