Carbon fiber-reinforced polymer-matrix

Fiber-reinforced polymer matrix composites UD carbon fiber-epoxy matrix ... 

Ostertag and Haug [194] also used filament winding to prepare carbon fiber reinforced SiC matrix composites using Si polymers as matrix precursors, which were pyrolyzed to form a SiC matrix. 

In the fabrication process of three dimensional carbon fiber reinforced SiC matrix composite, Suzuki and Nakano [207] applied PCVI as the final densification process for the specimen, which was made by the joint process of slurry infiltration and organosilicon polymer pyrolysis. The open porosity and bulk density of the specimen changed from 5.3% and 2.63 g-cm (relative density of 94%) to 3.5% and 2.67 g cm (relative density of 95%) by the apphcation of PCVI (1173 1223K, total 90,000 pulses). The flexural strength of the specimen increased over 20% (mean value =153 MPa, maximum value = 174 MPa). 

Ziegler et al [249] prepared carbon fiber reinforced ceramic matrix composites by infiltration of fiber preforms using the polymer infiltration pyrolysis (PIP) technique. 

In a carbon fiber reinforced polymer, the polymer matrix is heated more quickly in the microwave field than the fiber. This is the reason why accumulation of resin or resin-rich volumes should be avoided when designing a component to be processed in microwave heating, since these areas cause heating momentum that can damage the component. Due to the possible leakage of the microwave system, safety measures need to be taken while processing composite components. Furthermore, due to the risk of... 

Dong et al proposed a facile route to fabricate carbon fiber reinforced ceramic matrix composites (Cf/SiC-BN) by an active-filler-controlled polymer pyrolysis (AFCOP) process. In the proposed process, boron was introduced into the carbon fibers as active filler to form some boron-bearing species by in-situ reactions during the subsequent heat-treatment process. The composites were prepared by PIP using PCS as the polymer precursor. XRD patterns of the obtained composites confirmed the presence of H-BN. With the presence of BN, the oxidation of the composites was greatly improved. The weight losses of Cf/SiC and Cf/SiC-BN after being oxidized at 800°C for lOh were 36% and -16% respectively and most of the carbon fibers in... 

FIGURE 13.12 Composite coefficient of friction for polyester-based matrix material. Symbol legend Glass fiber-reinforced polymer O-parallel, A-antiparallel, Steel-reinforced polymer -parallel, A-antiparallel, H-normal, carbon fiber-reinforced polymer -parallel, A-antiparallel, B-normal. (Reprinted from Friction and Wear of Polymer Composites, Composite Materials Series, Friedrich, K., ed., 1, T. Tsnkizoe and N. Ohmae, pp. 212-220, Elsevier, New York, 1986, with permission from Elsevier.)... 

Applied Sciences, Inc. has, in the past few years, used the fixed catalyst fiber to fabricate and analyze VGCF-reinforced composites which could be candidate materials for thermal management substrates in high density, high power electronic devices and space power system radiator fins and high performance applications such as plasma facing components in experimental nuclear fusion reactors. These composites include carbon/carbon (CC) composites, polymer matrix composites, and metal matrix composites (MMC). Measurements have been made of thermal conductivity, coefficient of thermal expansion (CTE), tensile strength, and tensile modulus. Representative results are described below. 

Gerard J.F. (1988). Characterization and role of an elastomeric interphase on carbon fibers reinforcing an epoxy matrix. Polym. Eng. Sci. 28, 173-190. 

Carbon nanotubes can be used in reinforcing polymer matrix composites in two ways a) as the sole reinforcing phase (CNTRP), or b) as an additional reinforcing phase in conjunction with carbon fibers (CF+CNT) in a hybrid composite. Carbon nanotubes reinforced plastics (CNTRP) can be prepared by several methods, as described in section 15.1.3. Both CFRP and CNTRP composite structures can be joined using structural adhesives but machining and drilling are difficult as a result of the widely different properties of their constituents. 

The infiltration of carbonaceous structures by liquid silicon or silicon vapor is also an interesting technique to produce SiC components. Especially the Si-inhltration of C-structures coining from natural materials like wood offers the possibility for low cost fabrication of SiC, and has already been described in Sect. 4. Infiltration of polymer-matrix derived carbon fiber reinforced carbon is schematically drawn in Fig. 14 [255, 256]. The production of complex SiC-composite parts and components as well as big parts is possible by this route. 

Fibers are classified as natural or synthetic. Fibers are used as a reinforcement material to increase the mechanical properties of polymer composites [31]. Synthetic fibers have been successfully used as the reinforcing material in composites such as carbon fiber, glass fiber, and Kevlar fiber. Glass fiber is a well-known example of a reinforcement material for polyolefin matrix. Polypropylene is a composite of increasing interest in automotive and other applications [32]. Figure 6.3 illustrates a glass fiber-reinforced polypropylene matrix. 

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