Carbon Fiber Powder Reinforced Epoxy Composites used for Rapid Tooling

2011 ◽  
Vol 287-290 ◽  
pp. 197-200
Author(s):  
Hai Qing Hu ◽  
Li Zhao ◽  
Jia Qiang Liu ◽  
Shi Bao Wen ◽  
Yong Jiang Gu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Glass Fiber ◽  
Epoxy Resin ◽  
Epoxy Matrix ◽  
Rapid Tooling ◽  
Epoxy Composites ◽  
Waste Materials ◽  
Ultrasonic Time ◽  
Good For

Carbon fiber powder (CFP) instead of the traditional glass fiber (cloth) was used to reinforce epoxy resin for rapid tooling. There are two obvious advantages: one is to utilize the waste materials, which is good for the protection of the environment; another is to simplify the producing process by cast molding. The filling amount and dispersing process of CFP was studied in this paper. The results show that when the amount of CFP was 10 wt%, and the ultrasonic time is more than 15 min, the CFP can be dispersed in the epoxy matrix uniformly, and the mechanical properties can meet the requirement of epoxy molding.

Surface Modified Clay Reinforced Silicon Incorporated Epoxy Hybrid Nanocomposites: Thermal, Mechanical, and Morphological Properties

2018 ◽  
Vol 9 (1) ◽  
pp. 1-22
Author(s):  
C. Karikal Chozhan ◽  
A. Chandramohan ◽  
M. Alagar
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Epoxy Matrix ◽  
Thermo Gravimetric Analysis ◽  
Epoxy Composites ◽  
Neat Epoxy ◽  
Gravimetric Analysis ◽  
Modified Clay ◽  
Mmt Clay ◽  
Surface Modified

The silicon-containing epoxy/clay nanocomposites were developed by incorporating the surface-modified MMT clay upto 7wt% into Si-epoxy resin. The surface of the montmorillonite (MMT) clay was modified with two surface modifiers namely cetyltrimethylammonium bromide (CTAB) and 3-aminopropyltriethoxysilane (γ-APS). The surface modified clay reinforced Si-epoxy composites were developed in the form of castings, and were characterized for their thermal and mechanical properties. Thermal behaviour of the composites was characterized by differential scanning calorimetry (DSC), thermo gravimetric analysis (TGA) and dynamic mechanical analysis (DMA). Mechanical properties were studied as per ASTM standards. Data result from the different studies, it is inferred that the surface modified clay reinforced Si-epoxy composites exhibit lower Tg than that of neat epoxy matrix (127°C <165°C). The decomposition temperature for 60% weight loss of clay reinforced Si-epoxy composites is 674–823°C which is higher when compared to that of neat epoxy matrix. For 5wt% clay reinforced Si-epoxy composites, the values of tensile, flexural and impact strength are increased to 26%, 21% and 29% respectively. The storage modulus (E’) is increased from 5932 to 6308 MPa for clay reinforced Si-epoxy resin. XRD analysis confirmed the well-dispersed exfoliated nanocomposites structure.

Mechanical Properties of Carbon/PEEK Composites According to the Fiber Ply Orientation and Sizing Removal of Carbon Fiber for Artificial Hip Joint

2013 ◽  
Vol 750-752 ◽  
pp. 164-175 ◽  
Author(s):  
Yun Hae Kim ◽  
Sung Won Yoon ◽  
Jin Woo Lee ◽  
Tae Hyun Kim ◽  
Min Kyo Jung ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Tensile Test ◽  
Epoxy Resin ◽  
Hip Joint ◽  
Mechanical Test ◽  
Epoxy Composites ◽  
Pull Out ◽  
Artificial Hip Joint ◽  
Artificial Hip

The purpose of this study is to determine the correct estimation of the mechanical property between epoxy resin and PEEK sheet as the composites and its validity has been tested with the alternative materials of the metal-based materials for artificial hip joint. Moreover, this work evaluated the mechanical properties according to the temperature of heat treatments for sizing removal of carbon fiber and the fractured surfaces of Carbon/Epoxy and Carbon/PEEK composites were also evaluated. First, the sizing removal of carbon fiber were conducted at 300°C for 4 hours and 400°C for 2 hours. The fractured surface in the specimen of tensile test made from PEEK and epoxy resin was observed by SEM. the fracture surface of the tensile test specimen of the Carbon/Epoxy composites heat-treated to 400°C showed that the resin did not bury nearly in the fiber surface and pull out was observed. It is shown that 400°C is suitable for the sizing removal of the carbon fiber. The mechanical test result showed that there was no significant differences in short beam strength. However, the tensile strength and compressive strength of the Carbon/PEEK composites was higher than those of the Carbon/Epoxy composites in the case of the Vacuum Bag process. In addition, this result showed that the sizing material did not have a significant effect on the strength of the Carbon/PEEK composites.

scholarly journals Effect of Technological Factors on some Properties of Composite tube with Epoxy Resin K-153 Matrix

2019 ◽  
Vol 35 (3) ◽  
Author(s):  
Nguyen Trung Thanh
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Tensile Strength ◽  
Flexural Strength ◽  
Glass Fiber ◽  
Epoxy Resin ◽  
Polymer Composite ◽  
Epoxy Composites ◽  
Glass Fiber Reinforced ◽  
Pressure Resistance

The tube is made of polymer composite material based on K-153 epoxy resin (K-153 epoxy resin is made from ED-20 epoxy resin modified by thiokol and oligomer acrylate), T-13 glassfiber, hardener polyethylenepolyaminemade by wrapping on machine. The effect of drying temperature on mechanical properties (tensile strength, flexural strength) of polymercomposite materialwas studied. The paper also mentions to select suitable hardener to beused for polymercomposite tube wrapping. The results show that the strength at break, flexural strength of polymercomposite material are changedmuch when changing wrapping angle. The drying temperature increases, the curing time of polymercomposite material is much reduced. The time to stabilize after drying also greatly affects the pressure resistance of polymer composite tubes. Keywords Polymercomposite, K-153, tensile strength, flexural strength, pressure resistance. References [1] M. J. Mochane, T. C. Mokhena, T. H. Mokhothu, Recent progress on natural fiber hybrid composites foradvanced applications: A review, eXPRESS Polymer Letters 13 (2) (2019) 159-198.[2] J. Kim, H. J. Yoon, K. Shin, A study on crushing behaviors of composite circular tubes with different reinforcing fibers, International Journal of Impact Engineering 38(4) (2014) 198-207.[3] T. D. Jagannatha1, G. Harish, Mechanical Properties of carbon/ glass fiber reinforced epoxy hybrid polymer composites, Journal of Reinforced Plastics and Composites 4 (2) (2015) 131–137.[4] Vitalii Bezgin, Agata Dudek, Composites based on high-molecular weigh epoxy resin modified with polysulfide rubber, Composite Theory and practice 17(2) (2017) 79-83. [5] Abdouss, Majid, Farajpour, Tohid, Derakhshani, Morteza, The Effect of Epoxy-Polysulfide Copolymer Curing Methods on Mechanical-Dynamical and Morphological Properties, Iran. J. Chem. Chem. Eng. 30(4) (2011) 37-44.[6] G. Devendhar Rao, K. Srinivasa Reddy, P. Raghavendra Rao, Mechanical properties of E-glass fiber reinforced epoxy composites with SnO2 and PTFE, International Journal of Emerging Research in Management and Technology 6 (7) (2017) 208-214.[7] Hu Dayong, Jialiang Yang, Experimental study on crushing characteristics of brittle fibre/epoxy hybrid composite tubes, International Journal of Crashworthiness 15(4) (2010) 401-412 .[8] G.U. Raju, S. Kumarappa, Experimental Study on Mechanicaland Thermal Properties of Epoxy Composites Filled with Agricultural Residue, Polymers from Renewable Resources 3 (3) (2012) 118–138.          

Structural Analysis of Sol-Gel Derived TiO2 Nanoparticles: A Critical Impact of TiO2 Nanoparticles on Thermo-Mechanical Mechanism of Glass Fiber Polymer Composites

2021 ◽  
Author(s):  
Avinash Kumar ◽  
Abir Saha ◽  
Santosh Kumar
Keyword(s):  
Mechanical Properties ◽  
Structural Analysis ◽  
Glass Fiber ◽  
Tio2 Nanoparticles ◽  
Epoxy Matrix ◽  
Composite Laminates ◽  
Sol Gel ◽  
Epoxy Composites ◽  
Gravimetric Analysis ◽  
Dispersion Of Nanoparticles

Abstract The incorporated of inorganic nanoparticles with thermosetting epoxy polymer are an emerging field of research over past few years. It is well analyzed that epoxy matrix are brittle in nature that shows poor crack initiation and propagation and results poor thermo-mechanical properties. Therefore, researchers are showing their interest towards nanoparticles embedded epoxy composites to improve their fracture resistance (brittleness and toughness). In this investigation, the dispersion of TiO2 nanoparticles at different weight fraction (0-2%) with glass fiber reinforced epoxy composites is performed to enhance structural and thermo-mechanical properties. The TiO2 nanoparticles are prepared by sol-gel method and structural analysis of TiO2 nanoparticles shows greater interfacial bond with epoxy matrix and glass fibers due to fine dispersion of nanoparticles. From obtained results, a significant enhancement in their tensile strength (38.56%), flexural strength (30.52%), inter-laminar shear stress (25.22%), impact strength (327.10%), micro-hardness (48.53%) and fracture energy (40.19%) with minimum detrimental effect on toughness was revealed for GFRP-T1.0 compare to GFRP-T0.0 composite laminates. The stiffness and rigidity also improved up to 52.72% and 34.13% respectively for GFRP-T1.5 compare to GFRP-T0.0 composite laminates. The effects of nanoparticles contents and clustering size on thermal stability and glass transition temperature of developed composites are observed by thermo-gravimetric analysis. The surface morphology of TiO2 nanoparticles are characterized by transmission electron microscope (TEM) while dispersion of nanoparticles and failure of developed composites were analyzed by scanning electron microscopy (SEM).

The Effect of Pre-Crosslinked CTBN on the Mechanical Properties and Morphology of Epoxy Resin

2015 ◽  
Vol 1120-1121 ◽  
pp. 568-571
Author(s):  
Xiao Xue Song ◽  
Shiai Xu
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Epoxy Matrix ◽  
Interfacial Strength ◽  
Epoxy Composites ◽  
Acrylonitrile Copolymer ◽  
Curing Reaction ◽  
Rubber Toughened ◽  
Rubber Particles

A novel kind of rubber toughened epoxy was prepared by in situ pre-crosslinking carboxyl-terminated butadiene-acrylonitrile copolymer (CTBN) in the epoxy matrix. The in situ pre-crosslinking of CTBN was initiated by BPO, followed by the curing reaction of epoxy to form the final pre-crosslinked CTBN/epoxy composites. Mechanical properties of epoxy are further improved by the incorporation of pre-crosslinked CTBN compared with its traditional CTBN/epoxy counterparts due to the improved interfacial strength between rubber and epoxy. SEM shows that the size of phase separated rubber particles of pre-crosslinked CTBN/epoxy decreases significantly.

The Mechanical Properties of Organic Modified Epoxy Resin

2020 ◽  
Vol 43 (3) ◽  
pp. 10-14
Author(s):  
Georgel MIHU ◽  
Claudia Veronica UNGUREANU ◽  
Vasile BRIA ◽  
Marina BUNEA ◽  
Rodica CHIHAI PEȚU ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Epoxy Resin ◽  
Epoxy Matrix ◽  
Epoxy Resins ◽  
Mechanical Tests ◽  
Organic Modification ◽  
Three Point Bending ◽  
Modified Epoxy

Epoxy resins have been presenting a lot of scientific and technical interests and organic modified epoxy resins have recently receiving a great deal of attention. For obtaining the composite materials with good mechanical proprieties, a large variety of organic modification agents were used. For this study gluten and gelatin had been used as modifying agents thinking that their dispersion inside the polymer could increase the polymer biocompatibility. Equal amounts of the proteins were milled together and the obtained compound was used to form 1 to 5% weight ratios organic agents modified epoxy materials. To highlight the effect of these proteins in epoxy matrix mechanical tests as three-point bending and compression were performed.

scholarly journals High modulus polyimide particle-reinforcement of epoxy composites

2021 ◽  
Author(s):  
Johannes Essmeister ◽  
M. Josef Taublaender ◽  
Thomas Koch ◽  
D. Alonso Cerrón-Infantes ◽  
Miriam M. Unterlass ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Composite Materials ◽  
Epoxy Matrix ◽  
Epoxy Composites ◽  
High Modulus ◽  
Particle Reinforcement

A novel class of fully organic composite materials with well-balanced mechanical properties and improved thermal stability was developed by incorporating highly crystalline, hydrothermally synthesized polyimide microparticles into an epoxy matrix.

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