Compression Molding of All-Thermoplastic Composites by Using Fiber Wastes

2007 ◽  
Vol 334-335 ◽  
pp. 81-84
Author(s):  
Tomoaki Kaneda ◽  
Teruo Kimura
Keyword(s):  
Mechanical Property ◽  
Textile Industry ◽  
Bending Strength ◽  
Compression Molding ◽  
Polyester Fiber ◽  
Thermoplastic Composites ◽  
Molding Method ◽  
Thermal Insulating ◽  
Number Of Layers ◽  
Pitch Distance

In the textile industry, recently, it is urgent to develop the recycling system of the polyester fiber waste which results from the manufacturing process of sythetic fabric. However, most of the fiber wastes are destroyed by fire or buried underground. In this paper, the insulating composites which consist of polyester fiber wastes and PLA films are molded by compression molding method. In the process of preforming, the polyester fiber wastes are arrayed in uni-direction, and PLA films are inserted among layers of the polyester fiber wastes as binder. Namely, the polyester fiber wastes layers and PLA films are laminated alternately. In this paper, pitch (distance among the fiber wastes) and number of layers of polyester fiber wastes are varied, and the effect of pitch and number of layers of polyester fiber wastes on mechanical property and thermal insulating propertiy of the composites are discussed. As the result, it is concluded here that the melted state and the thickness of layers of PLA affect largely on the thermal conductivity and the bending strength of the boards.

scholarly journals Impregnation Behavior and Longitudinal Bending properties of Thermoplastic Composites Made from Commingled Twisted Spun Yarn

1992 ◽  
Vol 1 (3) ◽  
pp. 096369359200100
Author(s):  
Tatsuki Matsuo ◽  
Naoto Ikegawa
Keyword(s):  
Carbon Fiber ◽  
Bending Strength ◽  
Nylon 6 ◽  
Compression Molding ◽  
Lower Pressure ◽  
Thermoplastic Composites ◽  
Fiber Bundles ◽  
Bending Properties ◽  
Spun Yarn ◽  
Longitudinal Bending

Unidirectional composites were fabricated from twisted spun yarn commingled of carbon fiber and Nylon 6 fiber by compression molding. Longitudinal bending strength was saturated with a rather lower pressure and shorter period of compression. A clear fiber bundles- boundaries pattern is observed. Two steps of impregnation is also presumed.

scholarly journals Impregnation Behavior and Transverse Bending properties of Thermoplastic Composites Made from Commingled Twisted Spun Yarn

1992 ◽  
Vol 1 (3) ◽  
pp. 096369359200100
Author(s):  
Tatsuki Matsuo ◽  
Naoto Ikegawa
Keyword(s):  
Carbon Fiber ◽  
Bending Strength ◽  
Nylon 6 ◽  
Compression Molding ◽  
Thermoplastic Composites ◽  
Bending Properties ◽  
Bending Tests ◽  
Unidirectional Composites ◽  
Transverse Bending ◽  
Spun Yarn

Transverse bending tests were carried out for unidirectional composites fabricated from twisted spun yarn commingled of carbon fiber and Nylon 6 fiber by compression molding. Transverse bending strength was explained in conjunction with their impregnation behaviors.

Effects of TiN Content on Mechanical Properties and Microstructure of ATN Materials

2013 ◽  
Vol 589-590 ◽  
pp. 590-593 ◽  
Author(s):  
Min Wang ◽  
Jun Zhao
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Fracture Toughness ◽  
Vickers Hardness ◽  
Bending Strength ◽  
Sintering Temperature ◽  
Ceramic Materials ◽  
Hot Press ◽  
Hot Press Sintering ◽  
Tin Content

In order to investigate the effects of TiN content on Al2O3/TiN ceramic material (ATN), the ATN ceramic materials were prepared of TiN content in 30%, 40%, 50%, 60% in the condition of hot press sintering. The sintering temperature is 1700°C, the sintering press is 32MPa, and the holding time are 5min, 10min, 15min. The effects of TiN content on mechanical properties and microstructure of ATN ceramic materials were investigated by analyzing the bending strength, hardness, fracture toughness. The results show that ATN50 has the best mechanical property, its bending strength is 659.41MPa, vickers hardness is 13.79GPa, fracture toughness is 7.06MPa·m1/2. It is indicated that the TiN content has important effect on microstructure and mechanical properties of ATN ceramic materials.

The Mechanical Property of CFRP Laminates with Voids

2013 ◽  
Vol 652-654 ◽  
pp. 25-28 ◽  
Author(s):  
A Ying Zhang ◽  
Dong Xing Zhang
Keyword(s):  
Mechanical Property ◽  
Exponential Function ◽  
Bending Strength ◽  
Empirical Models ◽  
Cfrp Laminates ◽  
Evolution Laws

The effects of voids on the bending strength and ILSS of CFRP laminates were discussed in this paper. The bending strength and ILSS of specimens decreased with the porosity increasing from 0.33% to 1.50%. The empirical models of the bending strength and ILSS of CFRP laminates with different porosities are established by using ORIGIN software. The evolution laws of the bending strength and ILSS with different porosities were corresponding to the form of exponential function.

High flow compression molding for recycling discontinuous long fiber thermoplastic composites

2020 ◽  
Vol 54 (23) ◽  
pp. 3343-3350
Author(s):  
Éric Léger ◽  
Benoit Landry ◽  
Gabriel LaPlante
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compression Molding ◽  
High Flow ◽  
Low Flow ◽  
Thermoplastic Composites ◽  
Direction Parallel ◽  
Significant Difference ◽  
Long Fiber Thermoplastic ◽  
Flow Compression

An investigation into high flow compression molding for recycling thermoplastic discontinuous long fiber composites is presented. High flow recycled panels and conventional low flow baseline panels were produced with a large rectangular (2:1 aspect ratio) mold. Flow was induced in the recycled panels by stacking cut sections of conventionally produced baseline panels in the center of the mold cavity, representing 25% initial coverage. High flow compression molded panels were found to exhibit significantly higher than baseline tensile strength (+50%) and modulus (+31%) when tested in the direction parallel to flow. When tested in the direction perpendicular to flow, the opposite effect was found, with reductions in tensile strength (−42%) and modulus (−37%). However, when the average results of both directions are compared to baseline, no significant difference was found between the recycled and baseline panels. This severe anisotropic redistribution of mechanical properties suggests chip orientation is affected by flow. Additionally, micrographic analysis revealed that high flow molding induces intra-ply chip shearing and a reduction in resin rich regions within panels. Baseline panels also exhibited in-plane anisotropy, despite initial random distribution of chips and no or near no flow induced during molding. In this case, mechanical properties favored the direction perpendicular to that of the recycled panels.

Study on Processes and Properties of Continuous Woven Roving Reinforced Polyurethane Composites

2011 ◽  
Vol 306-307 ◽  
pp. 879-883 ◽  
Author(s):  
Xiao Li Dai ◽  
Xiang Wang ◽  
Jun Wang
Keyword(s):  
Mass Fraction ◽  
Interfacial Adhesion ◽  
Bending Strength ◽  
Compression Molding ◽  
Micro Structure ◽  
Molding Process ◽  
Elongation At Break ◽  
Vacuum Infusion ◽  
Polyurethane Composites ◽  
Sem Morphology

E-glass fiber woven roving reinforced polyurethane composites were manufactured by three different processes: hand lay-up, compression molding and vacuum infusion to assess the feasibility of all the processes. The results showed that all composites led to significant improvements in both flexural and tensile properties except elongation at break in comparison with the neat PU. Among the three processes, the best bending strength was exhibited by the hand lay-up process. This is attributed to higher PU mass fraction leads to a better fiber–matrix interfacial adhesion. Mechanical properties of the composite molded by vacuum infusion were superior to that produced by compression molding process. The SEM morphology revealed that vacuum infusion composite had more homogeneous micro- structure.

Development of Resource-Saving Cellular Glass Technology and Materials Based on it

2016 ◽  
Vol 870 ◽  
pp. 175-180 ◽  
Author(s):  
E.A. Yatsenko ◽  
V.A. Smolii ◽  
B.M. Goltsman
Keyword(s):  
Power Plant ◽  
Bending Strength ◽  
Lightweight Concrete ◽  
Foam Glass ◽  
Thermal Power ◽  
Thermal Insulating ◽  
Cellular Glass ◽  
Power Plant Ash ◽  
Slag Waste ◽  
Plant Ash

The advantages and drawbacks of a modern thermal insulating material – cellular glass (foam glass) – and the use of manmade waste (in particular, thermal power plant ash-slag waste) in its synthesis were described. The results of studies into the development of composites and temperature-time synthesis modes of effective energy-saving cellular glass and materials based on it were shown, including the experimental samples of insulating boards and blocks with density of not more than 500 kg/m3; experimental samples of porous granules for lightweight concrete and thermal insulating fillers with density of not more than 250 kg/m3 –. Technology of cellular glass using the Novocherkassk State District Power Plant ash-slag waste was described. The developed technological solutions allow setting physical and mechanical properties of materials based on cellular glass (density, porosity, thermal conductivity, compressive and bending strength) by varying the amount of ash-slag waste in its composition.

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