scholarly journals Development of a Prediction Model for the Mechanical Properties of Polypropylene Composites Reinforced by Talc and Short Glass Fibers

2013 ◽  
Vol 26 (4) ◽  
pp. 245-253
Author(s):  
Soon Kim ◽  
Dongil Son ◽  
Donghyuk Choi ◽  
Inchan Jeong ◽  
Young-Bin Park ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Prediction Model ◽  
Glass Fibers ◽  
Polypropylene Composites ◽  
Short Glass

scholarly journals Water Absorption and Hygrothermal Aging Behavior of Wood-Polypropylene Composites

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 782 ◽  
Author(s):  
Wei Wang ◽  
Xiaomin Guo ◽  
Defang Zhao ◽  
Liu Liu ◽  
Ruiyun Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Natural Fiber ◽  
Glass Fibers ◽  
Diffusion Constant ◽  
Water Molecules ◽  
Wood Powder ◽  
Polypropylene Composites ◽  
Effect Of Water ◽  
Composite Samples

Environmentally sound composites reinforced with natural fibers or particles interest many researchers and engineers due to their great potential to substitute the traditional composites reinforced with glass fibers. However, the sensitivity of natural fiber-reinforced composites to water has limited their applications. In this paper, wood powder-reinforced polypropylene composites (WPCs) with various wood content were prepared and subjected to water absorption tests to study the water absorption procedure and the effect of water absorbed in the specimens on the mechanical properties. Water soaking tests were carried out by immersion of composite specimens in a container of distilled water maintained at three different temperatures, 23, 60 and 80 °C. The results showed that the moisture absorption content was related to wood powder percentage and they had a positive relationship. The transfer process of water molecules in the sample was found to follow the Fickian model and the diffusion constant increased with elevated water temperature. In addition, tensile and bending tests of both dry and wet composite samples were conducted and the results indicated that water absorbed in composite specimens degraded their mechanical properties. The tensile strength and modulus of the composites reinforced with 15, 30, 45 wt % wood powder decreased by 5.79%, 17.2%, 32.06% and 25.31%, 33.6%, 47.3% respectively, compared with their corresponding dry specimens. The flexural strength and modulus of the composite samples exhibited a similar result. Furthermore, dynamic mechanical analysis (DMA) also confirmed that the detrimental effect of water molecules on the composite specimens.

Impact-Resistant Polypropylene/Short Glass Fiber Composites with Far-Infrared Emission: Manufacturing Technique and Property Evaluation

2013 ◽  
Vol 365-366 ◽  
pp. 1148-1151 ◽  
Author(s):  
Jia Horng Lin ◽  
Zheng Yan Lin ◽  
Jin Mao Chen ◽  
Chen Hung Huang ◽  
Ching Wen Lou
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Glass Fibers ◽  
Far Infrared ◽  
Infrared Emission ◽  
Infrared Emissivity ◽  
Short Glass Fiber ◽  
Property Evaluation ◽  
The Impact ◽  
Short Glass

This study produces the far-infrared emitting composites by using impact-resistant polypropylene, short glass fibers, and far-infrared masterbatches. The addition of short glass fiber and far-infrared masterbatches is then evaluated to determine their influence on the mechanical properties and far-infrared emissivity of the resulting composites. The experimental results show that with an increase in the content of short glass fibers, the tensile strength increases from 34 MPa to 56 MPa, the far-infrared emissivity increases from 0.85 to 0.93, but the impact strength decreases from 1037 J/m to 197 J/m, proving that the resulting composites have desired mechanical properties and far-infrared emission.

Evaluation of mechanical properties of poly (methyl methacrylate) reinforced with glass fibers

2018 ◽  
Vol 68 (1) ◽  
pp. 3-15
Author(s):  
Bartosz Bienias ◽  
Wojciech Michalski ◽  
Bartosz Mielan ◽  
Krzysztof Pietryga ◽  
Elżbieta Pamuła ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bending Strength ◽  
Glass Fibers ◽  
Acrylic Resin ◽  
Bending Test ◽  
Basic Material ◽  
Bending Force ◽  
Fiberglass Fabric ◽  
Glass Mat ◽  
Short Glass

Introduction. Acrylic resin is a basic material used in preparation of partial and complete dentures. One of the methods of improving mechanical properties of removable dentures is reinforcing acrylic resin with artificial fibers. Aim of the study. To compare mechanical properties of acrylic material reinforced with various types of glass fibers. Material and method. Heat-cured Estetic acrylic resin by Wiedent was used for denture bases. Glass mat, fiberglass fabric, long glass fibers and short glass fibers were used as reinforcing phase of the acrylic resin. In total, forty specimens were prepared, of which eight samples were controls. Research samples consisted of four groups of eight specimens each. Mechanical examinations in three-point bending test were conducted by means of the Zwick 1435 universal testing machine. Results. Specimens reinforced with short glass fibers achieved the highest values of maximum bending force (105.7 ± 8.9 N). It corresponded to the highest values of bending strength (126.8 ± 10.7 MPa). The lowest strength was found for specimens reinforced with glass mat (82.8 ± 11.8 MPa). The highest value of Young’s modulus was obtained for the samples reinforced with fiberglass fabric (3.7 ± 0.8 GPa). The highest values of deflection at maximum bending force were found for the samples reinforced with long glass fibers (4.0 ± 0.6 mm). Conclusions. The highest bending strength parameters were found for specimens reinforced with short and long glass fibers. Short glass fibers are better at improving mechanical properties of acrylic resin than long glass fibers.

Static and fatigue behaviors of short glass fiber–reinforced polypropylene composites aged in a wet environment

2019 ◽  
Vol 53 (25) ◽  
pp. 3629-3647 ◽  
Author(s):  
Lilla Mansouri ◽  
Arezki Djebbar ◽  
Samir Khatir ◽  
Hafiz Tauqeer Ali ◽  
Amar Behtani ◽  
...  
Keyword(s):  
Composite Material ◽  
Glass Fibers ◽  
Fatigue Loading ◽  
Fatigue Tests ◽  
Distilled Water ◽  
Static Tests ◽  
Polypropylene Composites ◽  
Injection Process ◽  
Test Criteria ◽  
Short Glass

In this paper, a new experimental study of the bending static and fatigue behaviors of a composite material reinforced with 40% by mass of short glass fibers (type E) and polypropylene matrix is presented. The composite material is obtained in the form of plates by an injection process, which inevitably affects the distribution of the fibers and therefore the behavior of the material studied. To do this, several techniques are implemented on specimens by cutting them in transverse and longitudinal directions. The effect of aging in distilled water at 40℃ on the mechanical characteristics is studied under static and fatigue loading conditions. The static tests, three-point flexure up to failure, allow us to choose the levels of stress for the fatigue tests. The endurance curves as a function of the number of cycles are plotted by adapting the end-of-test criteria N5, N10, and N20, which represent a rigidity drop of 5%, 10%, and 20%, respectively. An interpretation of the Wöhler curve equations defined for the end-of-test criteria allows defining the kinetics of material damage. The results highlighted the influence of distilled water on the mechanical behavior and the lifetime of the material. We also perform macroscopic observations of fracture and microscopic facies in order to identify the damage mechanisms of the composite material.

Effect of short glass fibers on the mechanical properties of cast ZA-27 alloy composites

1996 ◽  
Vol 17 (5-6) ◽  
pp. 245-250 ◽  
Author(s):  
S.C. Sharma ◽  
K.H.W. Seah ◽  
B.M. Satish ◽  
B.M. Girish
Keyword(s):  
Mechanical Properties ◽  
Glass Fibers ◽  
Short Glass
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