Preparation of Carbon Fiber Reinforced Geopolymer Composites

2014 ◽  
Vol 1081 ◽  
pp. 275-278
Author(s):  
Le Ping Liu ◽  
He Zhu ◽  
Yan He ◽  
Xue Min Cui
Keyword(s):  
Electrical Conductivity ◽  
Carbon Fiber ◽  
Carbon Fibers ◽  
Water Glass ◽  
Fiber Content ◽  
Fiber Reinforced ◽  
Geopolymer Matrix ◽  
Carbon Fiber Reinforced ◽  
Short Carbon ◽  
Geopolymer Composites

The carbon fiber reinforced geopolymer composites were synthesized with metakaolin, water glass and short carbon fibers. The surface treatment short carbon fibers are homogeneously distributed in the geopolymer matrix. The composites exhibit excellent mechanical properties and electrical conductivity. The flexural strength of the Cf /geopolymer composites reached 27 MPa with carbon fiber content of 2.78 %, and its electrical conductivity are increased from 10-5 to 10-1 S.m-1. However, when the carbon fiber content exceeded 4.15 %, the conductivity of the composites kept a constant.

MECHANICAL PROPERTIES AND FRACTURE BEHAVIOR OF ELECTROLESS NI-PLATED SHORT CARBON FIBER REINFORCED GEOPOLYMER MATRIX COMPOSITES

2009 ◽  
Vol 23 (06n07) ◽  
pp. 1371-1376 ◽  
Author(s):  
TIESONG LIN ◽  
DECHANG JIA
Keyword(s):  
Carbon Fiber ◽  
Carbon Fibers ◽  
Coating Thickness ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Short Carbon Fiber ◽  
Geopolymer Matrix ◽  
Carbon Fiber Reinforced ◽  
Electroless Ni ◽  
Short Carbon

Electroless Ni -plated short carbon fiber reinforced geopolymer matrix composites with various carbon fiber/matrix interface coating thicknesses have been successfully fabricated. The influences of coating thickness on the mechanical properties and fracture behavior have been investigated by three-point bending test and scanning electron microscopy. The flexural strength and Young's modulus of Ni -plated short carbon fiber reinforced geopolymer composites exhibit maximums as the average fiber coating thickness increases, but the work of fracture has a sharp decrease, and the fracture manner changes from ductile to brittle. This is mainly attributed to the fact that the carbon fibers favor breakage rather than pulling-out during loading because of the higher interface bonding strength of fiber/matrix, and pliability of the carbon fibers decreases with the increase of the coating thickness.

scholarly journals Thermo-mechanical behavior of epoxy composite reinforced by carbon and Kevlar fiber

2018 ◽  
Vol 225 ◽  
pp. 01022
Author(s):  
Falak O. Abasi ◽  
Raghad U. Aabass
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Flexural Strength ◽  
Carbon Fibers ◽  
Epoxy Composites ◽  
Fiber Reinforced ◽  
Fiber Loading ◽  
Kevlar Fiber ◽  
Carbon Fiber Reinforced ◽  
Short Carbon

Newer manufacturing techniques were invented and introduced during the last few decades; some of them were increasingly popular due to their enhanced advantages and ease of manufacturing over the conventional processes. Polymer composite material such as glass, carbon and Kevlar fiber reinforced composite are popular in high performance and light weight applications such as aerospace and automobile fields. This research has been done by reinforcing the matrix (epoxy) resin with two kinds of the reinforcement fibers. One weight fractions were used (20%) wt., Epoxy reinforced with chopped carbon fiber and second reinforcement was epoxy reinforced with hybrid reinforcements Kevlar fiber and improved one was the three laminates Kevlar fiber and chopped carbon fibers reinforced epoxy resin. After preparation of composite materials some of the mechanical properties have been studied. Four different fiber loading, i.e., 0 wt. %, 20wt. % CCF, 20wt. % SKF, AND 20wt. %CCF + 20wt. % SKF were taken for evaluating the above said properties. The thermal and mechanical properties, i.e., hardness load, impact strength, flexural strength (bending load), and thermal conductivity are determined to represent the behaviour of composite structures with that of fibers loading. The results show that with the increase in fiber loading the mechanical properties of carbon fiber reinforced epoxy composites increases as compared to short carbon fiber reinforced epoxy composites except in case of hardness, short carbon fiber reinforced composites shows better results. Similarly, flexural strength test, Impact test, and Brinell hardness test the results show the flexural strength, impact strength of the hybrid composites values were increased with existence of Kevlar fibers, while the hardness was decrease. But the reinforcement with carbon fibers increases the hardness and decreases other tests.

Fracture Parameters of Short Carbon Fiber Reinforced Polycarbonate Composite Fabricated by Injection Molding Process

2015 ◽  
Vol 776 ◽  
pp. 186-192
Author(s):  
Myung Goo Hwang ◽  
Gin Ho Kim ◽  
Han Ju Park ◽  
Yong Gon Lee ◽  
Cheol Min Yang ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Injection Molding ◽  
Carbon Fibers ◽  
Weld Line ◽  
Micro Ct ◽  
Fiber Reinforced ◽  
Short Carbon Fiber ◽  
Injection Process ◽  
Carbon Fiber Reinforced ◽  
Short Carbon

This paper investigated the fracture behavior of the unavoidable breakage of carbon fibers and fiber orientation of short carbon fiber reinforced polycarbonate composite in injection process. In this experiment, short carbon fiber mixed compound of 1mm, 3mm, 5mm, 7mm length with 10wt.%, 15wt.%, 20wt.% in polycarbonate for injection molding were produced through the extruder. The dumbbell specimens for tensile evaluation were made by injection molding. The parent specimens were made by double gate method, the weld specimens were made by single gate method which was controlled by inserting a stopper through the runner of the mold cavity. Short carbon fiber reinforced PC composite was evaluated by micro-CT with regard to the particle size of short fiber with a diversified quantitative analysis through entire process of the injection process in composite. The quantitative distribution of fiber orientation was also examined by micro-CT with regard to normal direction or anisotropy. Weld line of short carbon fibers reinforced PC composite weaken the bonding strength by 50% compared to parent materials because the weld line is composed with concentrated anisotropy orientation of short carbon fiber in weld line. Evaluation of the mechanical properties of the injection specimens group was utilized by universal tensile strength tester. In addition, fracture surface of parent and weld materials was investigated by a SEM.

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