Papers by Keyword: Glass Fiber

Abstract: In this work, the influence of hybrid effect on carbon and glass fiber reinforced polymer (FRP) on the mechanical performance for structural application was studied. The hybrid fiber reinforced polymer (FRP) composites made from woven E-glass and carbon fibers with epoxy resin. The FRP hybrid composites were fabricated using vacuum-assisted resin transfer moulding process, which is capable of producing constant thickness with high volume fractions of composite panels compared to that of traditional wet hand lay-up method. Mechanical performance of the FRP hybrid composites were evaluated against full carbon or glass fiber reinforced polymer composites. Important properties such as tensile strength, flexural strength and volume fraction of reinforcement were determined according to the ASTM standards. It was found that the mechanical properties of carbon-glass hybrid composites exhibited significant improvement in term of strength and strain respectively compared to that of full glass FRP composites and full carbon FRP composites.

Abstract: Crashworthiness of fiber reinforced polymer composites is classified based on how they deform, fail and dissipate the energy in a controllable manner. Fuselage shapes were manufactured from hybrid glass/epoxy and cotton/epoxy layers. The effects of the test speed and fiber orientation were investigated. The results showed that significant effects of cotton fiber/epoxy layers on the crushing force efficiency of tested fuselage systems. On the other hand, the test speed did not show any significant effects whereas; the fiber orientation did have a significant effect.

Abstract: Pultrusion manufacturing process is a well established technique for the cost-effective production of high-modulus and lightweight composite materials having constant cross-sectional profiles. A study was carried out to analyze the effect of additives on bending strength of pultruded hybrid reinforced resol type phenolic composite. Glassfibre roving and kenaf fibre hybrid were reinforced in resol type phenolic. A series of bending tests were performed by varying the loading percentage of two type’s pultruded fibres,without additives and with additives. From the results, it was found that the modulus of strength of composites with additives display higher values as compared to composite without additives. The presence of additives were able to synergistically interact with both fibres and finally improve the interaction between them. Analysis of the fracture surface from the bending test were carried out using Dino-Lite digital microscope.

Abstract: The aim of this study is to examine the influence of the scrap material and the additional elements on the structure and mechanical properties of multi-phase system. All of the composites were fabricated by mixing during 4h and then put in an ultrasonic dispersion for 1h. After that, a detail analyses are carried out by the means of Dynamic Mechanical Thermal Analysis (DMTA), Microindentation and scratch test. The structure was investigated by Scanning Electron Microscopy (SEM). The present study will help to optimize the parameters of this newly designed composite material allowing to find different possibilities for the industrial applications and to contribute in the war with the waste rubber materials.

Abstract: The Fe³⁺ and N–doped 3SnO₂/TiO₂ composite thin films and undoped films coated on glass fibers were prepared by sol–gel and dip–coating methods. The films were calcined at 600°C for 2 hour and characterized by XRD, SEM, EDS and XPS. The photocatalytic activity of the coated glass fibers was determined by means of degradation of a methylene blue (MB) solution and humic acid (HA). It was found that the optimized 20N/3SnO₂/TiO₂ composite films exhibit a high photocatalytic activity and HA could be rapidly removed from water. The main factor affecting the HA degradation of 20N/3SnO₂/TiO₂ films is quantity of glass fibers loading, irradiation power of UV lamp and flow rate of water.

Abstract: In order to deal with the more and more serious problem of electromagnetic radiation pollution, cement-based composites were prepared by introducing glass fiber into cement as through wave reagent and carbon black as absorbing reagent . Arched testing method were used to test the reflection losses in the frequency range of 2~18 GHz. The results showed that the absorption properties were improved in high frequency compared with the pure cement. The filling ratio of carbon black and glass fiber as well as the thickness of samples had influence on the absorption properties. The lowest reflection loss of-11.2 dB was obtained at 18 GHz of 9wt.% glass fiber and 5wt.% carbon black filled cement with thickness of 10mm. The new material can be used for building indoor electromagnetic radiation protection.

Abstract: In order to study the mechanical property for the combining yarn of BF/GF and polypropylene, 8 groups of combining yarn were designed and prepared. Through testing the mechanical property of the yarns, the affection of some parameters on the property of the yarns was analyzed. And following conclusions can be gotten. For BF/polypropylene combining yarn, when the fiber content of basalt is about 50.7%, the mechanical property of the yarn is the best. When the fiber content of basalt is about 43.7%, the mechanical property of the yarn is the worst. For GF/polypropylene combining yarn, the optimal and worst ratio is 55.42% and 44.4%, respectively.

Abstract: The use of eco-friendly composites has gained attraction due to its lightweight and moderate strength in recent years. The aim of this paper was to study the influence of the stacking sequence of glass and henequen fabrics on the mechanical properties of epoxy composites. Fiber/Matrix interface adhesion was examined using SEM. It was observed how the tensile and flexural properties of the hybrid reinforced epoxy laminates with henequen and glass fabrics, increase as the number of layers of henequen woven fabric decrease while stacking sequence does not have a great effect on the tensile properties. However, when ten layers of henequen fabric were used, a eco-friendly composite material with good mechanical strength was obtained due to the mechanical anchoring of the henequen fabric with the epoxy resin. Hence, it is clearly shown how by tailoring the geometry of the fabric, improvements in the mechanical properties of eco-friendly polymer composites can be achieved.

Abstract: Addition of organoclay to polymer matrix has recently attracted industry attention due to improved physical properties with an overwhelming potential in crude oil and water pipe applications. In this work, electrical grade-corrosion resistant (E-CR) glass fiber mats were used to prepare glass fiber reinforced epoxy (GFRE) nanoclay composites using hand layup method. Three different hybrid GFRE composites were made using 0, 1.5 and 3 wt% loading of I.30E nanoclay. High shear mixing was used to prepare the epoxy/clay nanocomposite. XRD results revealed a disordered intercalated morphology. The effect of nanoclay on mechanical properties were investigated by carrying out flexural and fracture toughness tests. The test results showed that addition of nanoclay up to 1.5 wt% improved both flexural strength and fracture toughness. However, these properties deteriorated when the clay content increased to 3 wt%.

Abstract: In general, filament winding technique is used to fabricate the composite pipes using continuous fiber and matrix resin. In this study, fly ash based geopolymer resin composites reinforced by continuous glass fiber were used for fabrication and synthesized by different curing and sintering temperature, different pattern and different viscosity of geopolymer. The effects of that parameter on the product were investigated. The compressive properties of the resulting composite were determined on an Instron Universal Testing under compression mode and the results show that the helical pattern with low viscosity cured at 75°C give the highest strength.