water absorption in composites

Water absorption characteristics of dental composites incorporating ...Biomaterials. 2002 Apr;23(8):1897-904. water absorption characteristics of dental composites incorporating hydroxyapatite filler. Santos C(1), Clarke RL, Braden M, Guitian F, Davy KW. Author information: (1)St Bartholomew's and the Royal London School of Medicine and Dentistry, Department of Biomaterials in Relation to Dentistry, University of London, UK. [email protected] water uptake characteristics of BisGMA-based composites incorporating untreated and ...【Get Price】

Effect of water absorption on the mechanical properties of hemp ...Hemp fibre reinforced unsaturated polyester composites (HFRUPE) were subjected to water immersion tests in order to study the effects of water absorption on the mechanical properties. HFRUPE composites specimens containing 0, 0.10, 0.15, 0.21 and 0.26 fibre volume fraction were prepared. water absorption tests were conducted by immersing specimens in a de-ionised water bath at 25 °C and 100 °C for different time durations. The tensile and flexural properties of water ...【Get Price】

Effect of water absorption on the mechanical properties of hemp ...Effect of water absorption on the mechanical properties of hemp fibre reinforced unsaturated polyester composites. H.N. Dhakal *, Z.Y. Zhang, M.O.W. Richardson. Advanced Polymer and composites (APC) Research Group, Department of Mechanical and Design Engineering, University of Portsmouth,. Anglesea Road, Anglesea Building, Portsmouth, Hampshire PO1 3DJ, UK. Received 12 April 2006; received in revised form 22 June 2006; accepted 29 June 2006. Abstract.【Get Price】

The Effect of Water Absorption on Mechanical Properties of Wood ...ABSTRACT. The main objectives of this research were to study the effect of water absorption on mechanical properties of hybrid fiber reinforcement for polypropylene composites. The poor resistance towards water absorption is one of the d- backs of natural fibers. Hybrid filler-polypropylene composites are subjected to water immersion tests in order to study the effects of water absorption on the mechanical properties. composites specimens containing 30 phr and 40 phr fiber.【Get Price】

The water absorption behaviour of all-polypropylene composites ...11 Mar 2010 ... The water absorption behaviour of all-polypropylene composites and its effect on mechanical properties. H. Deng a,b,*, C.T. Reynolds a, N.O. Cabrera a,c, N.-M. Barkoula a,d, B. Alcock a, T. Peijs a,c,** a Queen Mary, University of London, Centre of Materials Research, and School of Engineering and Materials Science, Mile End Road, E1 4NS London, UK b College of Polymer Science and Engineering, Sichuan University, State Key Laboratory of Polymer Materials ...【Get Price】

Mechanical properties and water absorption behaviour of recycled ...Recycled cellulose fibre (RCF) reinforced epoxy composites were fabricated with fibre loadings of 19, 28, 40 and 46 wt%. Results showed that flexural strength, flexural modulus, fracture toughness and impact strength increased as the fibre content increased. The ultimate mechanical properties were achieved with a fibre content of 46 wt%. The effect of water absorption on mechanical and physical properties of RCF/epoxy composites was investigated. The values of maximum water ...【Get Price】

Water absorption study on pultruded jute fibre reinforced ...water absorption of natural fibre plastic composites is a serious concern especially for their potential outdoor applications. in this research, jute fibre reinforced with unsaturated polyester composites are subjected to water immersion tests in order to study the effects of water absorption in its mechanical properties. water absorption tests were conducted by immersing composite specimens into three different environmental conditions included distilled water, sea water and acidic ...【Get Price】

Mechanical and water absorption behaviour of banana/sisal ...The tensile, flexural, impact and water absorption tests were carried out using banana/epoxy composite material. initially, optimum fiber length and weight percentage were determined. To improve the mechanical properties, banana fiber was hybridised with sisal fiber. This study showed that addition of sisal fiber in banana/epoxy composites of up to 50% by weight results in increasing the mechanical properties and decreasing the moisture absorption property. Morphological analysis ...【Get Price】

Absorption of water into carbon fibre composites - Wiley Online LibraryThe environmental behaviour of carbon fibre composites is being investigated. water pick-up data obtained during these studies are analysed in an attempt to develop an understanding of the absorption mechanism. .There is evidence which indicates that voids and defects in the composite have a marked effect on the absorption process and may assume greater significance than the diffusion process through the resin. Comments are made as to the possibility of the reversible ...【Get Price】

Water Absorption Behaviour and Its Effect on the Mechanical - Hindawi12 Aug 2015 ... This paper focuses on eco-friendly and sustainable green composites manufacturing using resin transfer moulding (RTM) process. Flax fibre reinforced bioepoxy composites at different weight fractions (40 and 55 wt%) were prepared in order to study the effect of water absorption on their mechanical properties. water absorption test was carried out by immersion specimens in water bath at room temperature for a time duration. The process of water absorption of these ...【Get Price】

Effect of water absorption on the mechanical properties of cotton ...Cotton fabric (CF) reinforced geopolymer composites are fabricated with fibre loadings of 4.5, 6.2 and 8.3 wt%. Results show that flexural strength, flexural modulus, impact strength, hardness and fracture toughness are increased as the fibre content increased. The ultimate mechanical properties were achieved with a fibre content of 8.3 wt%. The effect of water absorption on mechanical and physical properties of CF reinforced geopolymer composites is also investigated.【Get Price】

Physical, Mechanical and Water Absorption Behaviour ... - IOPscienceAbstract: The objective of the present work is to study the physical, mechanical and water absorption behaviour of coir fiber reinforced epoxy composites filled with Al2O3 particulates. composites with different compositions were prepared by varying the length of the fiber and content of fiber using hand lay-up technique. The experimental investigation reveals that the properties of composite increases with the incorporation of Al2O3 particulates. It is observed that the density of ...【Get Price】

Water absorption behavior and residual strength assessment of ...Abstract. Present investigation is aimed to study the water absorption behaviour and evaluation of residual strength of glass fibre/epoxy (GE) and alternate plies of glass- carbon/epox【Get Price】

Water absorption characteristics of dental composites incorporating ...water uptake characteristics of BisGMA-based composites incorporating untreated and surface-treated hydroxyapatite (HA) with a silane coupling agent have been investigated. The water absorption and desorption behaviour of these composites obeyed the classical diffusion theory. The diffusion coefficients of the composites during first absorption were very similar to that for the base resin, suggesting that the water uptake process occur mainly in the resin matrix. The incorporation of ...【Get Price】

Studies on Water Absorption of Bamboo-Polyester Composites ...The effect of silane treatments on the water absorption proper- ties of mercerized bamboo matting reinforced polyester composites were investigated. Treatments using c-Aminopropyltriethoxy silane,. 3-trimethoxysilylpropyl methacrylate, Vinyltris(2-methoxyethoxy)- silane, Bis[3-(triethoxysilyl)propyl] tetrasulfide, 3-aminopropyltri- methoxy silane and n-Octyltrimethoxy silane were carried out to improve the water resistant property of the bamboo fibers. water absorption in the composites ...【Get Price】