Microstructure and Flexural Property of CaCO3 Whisker Reinforced Epoxy Composite Material

2009 ◽  
Vol 620-622 ◽  
pp. 433-436 ◽  
Author(s):  
Peng Liu ◽  
Hui Cheng Shi ◽  
Hai Yun Jin ◽  
Nai Kui Gao ◽  
Zong Ren Peng
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Flexural Strength ◽  
Epoxy Resin ◽  
Epoxy Composite ◽  
Flexural Property ◽  
Pure Epoxy ◽  
Reinforced Composite ◽  
Maximum Value

Reinforcement was performed to epoxy resin by CaCO3 whisker, and the effect of flexural property of CaCO3 whisker reinforced composite materials was studied. The microstructures of the composite materials were observed by SEM. The results showed that the flexural strength of the composites increased with increasing CaCO3 whisker content, and the flexural strength reached to the maximum value when CaCO3 whisker content was about 15wt.%, and the maximum value was about 11% higher than that of pure epoxy resin. But, the strength would drop sharply with the excessive CaCO3 whisker.

The Estimation of Thermal Conductivity for Alumina-Epoxy Composite Material with High Filling Volume Fraction

2014 ◽  
Vol 918 ◽  
pp. 21-26
Author(s):  
Chen Kang Huang ◽  
Yun Ching Leong
Keyword(s):  
Thermal Conductivity ◽  
Composite Material ◽  
Composite Materials ◽  
Physical Model ◽  
Electron Scattering ◽  
Volume Fraction ◽  
Epoxy Composite ◽  
The Matrix ◽  
Transport Theorem ◽  
Good Agreement

In this study, the transport theorem of phonons and electrons is utilized to create a model to predict the thermal conductivity of composite materials. By observing or assuming the dopant displacement in the matrix, a physical model between dopant and matrix can be built, and the composite material can be divided into several regions. In each region, the phonon or electron scattering caused by boundaries, impurities, or U-processes was taken into account to calculate the thermal conductivity. The model is then used to predict the composite thermal conductivity for several composite materials. It shows a pretty good agreement with previous studies in literatures. Based on the model, some discussions about dopant size and volume fraction are also made.

scholarly journals Tension mechanical properties of recycled glass-epoxy composite material

2012 ◽  
pp. 189-198 ◽  
Author(s):  
Jelena Petrovic ◽  
Darko Ljubic ◽  
Marina Stamenovic ◽  
Ivana Dimic ◽  
Slavisa Putic
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Composite Material ◽  
Composite Materials ◽  
Modulus Of Elasticity ◽  
Epoxy Composite ◽  
Raw Materials ◽  
Mechanical Tests ◽  
Recycled Glass ◽  
Before And After

The significance of composite materials and their applications are mainly due to their good properties. This imposes the need for their recycling, thus extending their lifetime. Once used composite material will be disposed as a waste at the end of it service life. After recycling, this kind of waste can be used as raw materials for the production of same material, which raises their applicability. This indicates a great importance of recycling as a method of the renowal of composite materials. This study represents a contribution to the field of mechanical properties of the recycled composite materials. The tension mechanical properties (tensile strength and modulus of elasticity) of once used and disposed glass-epoxy composite material were compared before and after the recycling. The obtained results from mechanical tests confirmed that the applied recycling method was suitable for glass-epoxy composite materials. In respect to the tensile strength and modulus of elasticity it can be further assessed the possibility of use of recycled glass-epoxy composite materials.

Investigation of Mechanical Properties of Silk and Epoxy Composite Materials

2021 ◽  
Vol 889 ◽  
pp. 27-31
Author(s):  
Norie A. Akeel ◽  
Vinod Kumar ◽  
Omar S. Zaroog
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Composite Materials ◽  
Epoxy Composite ◽  
Mechanical Test ◽  
Weight Ratio ◽  
Industrial Applications ◽  
Sem Analysis ◽  
Equivalent Strength ◽  
Test Impact

This research Investigates the new composite materials are fabricated of two or more materials raised. The fibers material from the sources of natural recycled materials provides certain benefits above synthetic strengthening material given that very less cost, equivalent strength, less density, and the slightest discarded difficulties. In the current experiments, silk and fiber-reinforced epoxy composite material is fabricated and the mechanical properties for the composite materials are assessed. New composite materials samples with the dissimilar fiber weight ratio were made utilizing the compression Molding processes with the pressure of 150 pa at a temperature of 80 °C. All samples were exposed to the mechanical test like a tensile test, impact loading, flexural hardness, and microscopy. The performing results are the maximum stress is 33.4MPa, elastic modulus for the new composite material is 1380 MPa, and hardness value is 20.64 Hv for the material resistance to scratch, SEM analysis of the microstructure of new composite materials with different angles of layers that are more strength use in industrial applications.

Measurements on the Thermal Conductivity of Epoxy/Carbon-Nanotube Composite

2008 ◽  
Author(s):  
Cheng-Hsiung Kuo ◽  
Hwei-Ming Huang
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Composite Material ◽  
Carbon Nanotube ◽  
Epoxy Resins ◽  
Epoxy Composite ◽  
Heat Generation Rate ◽  
Transfer Rates ◽  
Pure Epoxy ◽  
Carbon Nanotube Composite

This study measures the thermal conductivity of the MWNT/epoxy bulk composite material to enhance the heat transfer rates of the high power LED device. In this study, three different weight percentages (0.0 wt%, 0.3 wt% and 0.5 wt%) of MWNT/Epoxy composite and five different heat generating rates were employed for the investigation. The case of pure epoxy resins (0.0 wt%) was used as a reference. The responding time and the thermal conductivity of the composites were evaluated. The results show that the response is the fastest for composite with 0.5 wt% MWNT among three composites studied herein. The responses of the 0.3%wt and 0.5%wt composite are increased by 14.3%∼26.7% relative to that of the pure epoxy. Compare with that of the pure epoxy, the thermal conductivities for the cases with 0.3 wt% and 0.5 wt% MWNT/epoxy composite are increased by 15.9%∼44.9%. Further, the thermal conductivity does not vary with temperature for the temperature range studied herein. In the present study, the thermal conductivity of the composite material is found to increase mildly with the increasing heat generation rate.

The study on coffee slag/recycled polystyrene circulation materials and its application on blinds

2020 ◽  
Vol 34 (07n09) ◽  
pp. 2040010
Author(s):  
Hsu-Chiang Kuan ◽  
Chin-Lung Chiang ◽  
Ming-Yuan Shen ◽  
Chen-Feng Kuan
Keyword(s):  
Tensile Strength ◽  
Composite Material ◽  
Composite Materials ◽  
Flexural Strength ◽  
Energy Saving ◽  
Metal Powder ◽  
Carbon Footprint ◽  
Heat Deflection Temperature ◽  
Carbon Footprint Reduction

In this study, we combine the coffee slag, metal powder with recycled petrochemical plastics (polystyrene, PS) to prepare circulation composite materials. It is an energy saving and carbon footprint reduction composite material compared with traditional one. The resulted PS/coffee composite has tensile strength 117.5 kgf/cm2 and flexural strength is 314.2 kgf/cm2. The heat deflection temperature (HDT) is 92[Formula: see text]C and the UV test fits the ASTM G154 requirement. The metal gross composite is with tensile strength 318.8 kgf/cm2 and flexural strength is 581.6 kgf/cm2. The HDT is 91[Formula: see text]C and the UV test fits the ASTM G154 requirement as well. Its reuse ratio can reach 85% for recycled PS. The resultant product has metal texture blinds with metal gross and wood-like blinds with coffee aroma flavor.

Mechanical loss in a glass-epoxy composite

1990 ◽  
Vol 5 (5) ◽  
pp. 913-915 ◽  
Author(s):  
Manfred Weller ◽  
Hassel Ledbetter
Keyword(s):  
Epoxy Resin ◽  
Epoxy Composite ◽  
Glass Fibers ◽  
Resin Matrix ◽  
Torsion Pendulum ◽  
Loss Peak ◽  
Mechanical Loss ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Computer Controlled

Using a computer-controlled inverted torsion pendulum at frequencies near 1 Hz, we determined the mechanical losses in a uniaxially fiber-reinforced composite. The composite comprised glass fibers in an epoxy-resin matrix. We studied three fiber contents: 0,41, and 49 vol.%. Three mechanical-loss peaks appeared: above 300 K, near 200 K, and near 130 K. They correspond closely to α, β, and γ peaks found previously in many polymers. We failed to see a mechanical-loss peak for either the glass or the glass-resin interface. Between 300 and 4 K, the torsion modulus increased in the resin by a factor of 3.30 and in the 0.49 glass-epoxy by a factor of 2.37.

Composite Materials with Natural Fiber NFRC on Inorganic Matrix for Seismic Reinforcement of Masonry Structures

2019 ◽  
Vol 817 ◽  
pp. 385-391
Author(s):  
Antonio La Tegola ◽  
Walter Mera
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Natural Fiber ◽  
Short Fibers ◽  
Cementitious Matrix ◽  
Reinforced Composite ◽  
Bamboo Plant ◽  
Definition Of ◽  
The Cost ◽  
Inorganic Matrix

Composite materials with carbon, aramidic, glass and lately basalt fibers with a polymeric or cementitious matrix FRP or FRC, are frequently used for the seismic reinforcement of masonry buildings. The fibers of such composites are synthetic, and they have high mechanical characteristics. However, their cost is very expensive and do not belong to the eco compatible products. Moreover, for the making of these fibers an elevated amount of energy is needed for reaching the temperature relative to the production process.An alternative to the use of such fibers may be recurring to natural eco compatible fibers for which the cost is much lower, and they do not need a special processing. Using such fibers in an inorganic cementitious matrix, an improvement of the mortar or of the plaster quality is obtained, giving to them also an adequate ductility.In order to make the composite material, short fibers immersed in the cementitious mortar are used; the composite material can be represented using the acronym NFRC (Natural Fiber Reinforced Composite).Among the different types of fibers that can be used, there is the short fibers derivate from the bamboo plant that are available under the form of yarns or threads.The scope of this paper consists in the definition of the optimal volumetric ratio for the NFRC composite, and the length of the fiber compatible with the workability and the resulting mechanical characteristic.

Study on Mechanical Properties of Wood Plastic Composites

2012 ◽  
Vol 182-183 ◽  
pp. 307-310
Author(s):  
Fang Huang
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Composite Materials ◽  
Matrix Material ◽  
Material Strength ◽  
Dispersed Phase ◽  
Wood Plastic Composites ◽  
Reinforced Composite ◽  
Plastic Composites ◽  
Pure Matrix

Composite material has many excellent properties, current, receives special attention was paid to its mechanical properties. By adding the dispersed phase can make the strength of the composites than did not join the dispersed phase of pure matrix material strength several times or several times. Composite materials are often called fiber ( or other dispersed phase) reinforced composite materials.

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