期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2017
卷号：8
期号：4
页码：1220-1234
出版社：University of Mohammed Premier Oujda
摘要：In this study, composites of short silica fibre (SSF) and modified ammonium phenolic resole resin(MRR) were prepared by blending of ammonium phenolic resole resin with 15phr polyvinylbutyral(PVB). Different weight ratio of short silica fiber (SSF) reinforced (PVB) modified resole phenolicresin composites were fabricated. FTIR was used to study the chemical structure of modified andunmodified resole resin. Thermal decomposition of MRR and SSF/MRR composites wereinvestigated with differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA).Tensile, flexural and impact strength tests of the composites were conducted to investigate theeffect of SSF content on SSF/MRR composites. The interaction between fiber and resin wasstudied by scanning electron microscope (SEM) and optical microscopy. The results showed thatSSF/MRR composites were prepared through simple and low-cost hot-compression moldingwithout using interfacial promoting bonding agent and that MRR matrix can be loaded up to65wt% short silica fibres. A good PVB and resole resin (mixture of 85 % resole resin and 15 %PVB) compatibility was confirmed by FTIR and DSC. The mechanical properties such as tensilestrength (28.4MPa), flexural strength (155.03MPa), flexural Young’s modulus (12.81GPa), andimpact strength (42.04KJ/m2) of SSF/MRR composites showed optimum value at 55wt% fibrecontent. Deformation and fracture behavior of SSF/MRR composites were also investigated andcorrelated with the mechanical property data and microscopic examination. Water absorption, voidcontent and density of composites were also determined.
