Polyethylene carbon fiber filled

Short fiber reinforcement of TPEs has recently opened up a new era in the field of polymer technology. Vajrasthira et al. [22] studied the fiber-matrix interactions in short aramid fiber-reinforced thermoplastic polyurethane (TPU) composites. Campbell and Goettler [23] reported the reinforcement of TPE matrix by Santoweb fibers, whereas Akhtar et al. [24] reported the reinforcement of a TPE matrix by short silk fiber. The reinforcement of thermoplastic co-polyester and TPU by short aramid fiber was reported by Watson and Prances [25]. Roy and coworkers [26-28] studied the rheological, hysteresis, mechanical, and dynamic mechanical behavior of short carbon fiber-filled styrene-isoprene-styrene (SIS) block copolymers and TPEs derived from NR and high-density polyethylene (HOPE) blends. 

Zhang, C., Yi, X.S., YuL H., Asai, S., and Sumita, M. (1998) Selective localization and double percolation of short carbon fiber filled polymer blends high-density polyethylene/isotactic polypropylene. Mater. Lett., 36, 186. 

Hausnerova et al. [33] studied the rheological properties of carbon fiber-filled low-density polyethylene. These woikers investigated rheological properties of carbon-filled low-density polyethylene melts undergoing parallel superposed steady and oscillatory shear flows. It was also found that the critical angular frequency where the phase angle becomes 90° and storage modulus decreases sharply to zero. This was mainly dependent on the fiber volume fraction. 

Zhang C, Yi X, Yui H, Asai S, Sumita M (1998), Morphology and electrical properties of short carbon fiber-filled polymer blends high-density polyethylene/ poly(methyl methacrylate) , J Appl Polym Sci, 69, 1813. 

The electric conductivity of polyethylene can be improved by addition of manyfillers. Figure 15.17 shows the effect of aspect ratio of the fiber on the electric conductivity of polyethylene filled with carbon fiber. Depending on the aspect ratio, different levels of carbon fiber are needed to obtain the same effect. When a very high aspect ratio is used, 2 vol% carbon fiber gives the same effect as can be obtained with 30 vol% of carbon fiber having aspect ratio of 1. Compared with... 

Figure 15.17. Electric conductivity of polyethylene filled with carbon fibers of different aspect ratio vs. volume content. [Adapted, by permission, from Agari Y, Ueda A, Nagai S, J. Appl. Polym. Sci., 52, No.9,1994, 1223-31.]...

W. Thongruang, C. Maurice Batik, J.S. Richard, Volume-exclusion effects in polyethylene blends filled with carbon black, graphite, or carbon fiber. J. Polym. Sci., Part B Polym. Phys. 40, 1013-1025 (2002)... 

Thongruang, W., Spontak, R.J., and Balik, C.M. (2002) Correlated electrical conductivity and mechanical property analysis of high-density polyethylene filled with graphite and carbon fiber. Polymer 43, 2279-2286. 

Paul A et al (1997) Electrical properties of natural fiber reinforced low-density polyethylene composites a comparison with carbon black and glass fiber filled low-density polyethylene composites. J Appl Polym Sci 63 247-266... 

Ling, Q. Sun, J. Zhao, Q. Zhou, Q. Microwave absorbing properties of linear low density polyethylene/ethylene-octene copolymer composites filled with short carbon fiber Mater. Sci. Eng., B 2009, 162, 162-166. 

The results presented by Ling et al. [31], which are focused on carbon fibers as susceptors, describe a similar heating behavior like the one being observed with carbon black filled HDPE material. The work of John Harper [29] is related to the heating behavior of carbon black as a microwave susceptor in high density polyethylene by the modification of the surface area. The specific surface was varied from 7.5 to 137 m /g (Figure 2.14). 

Janick and Kroliskowski [40] investigated the effect of Charpy notched impact strength on the flexural modulus of polyethylene and polyethylene terephthalate. Polymers with good flexural modulus include polydiallylisophthalate (11.3 GPa), phenol-formaldehyde (6.5 GPa), alkyd resins (8.6 GPa), and polyphenylene sulfide (13.8 GPa), as well as glass-filled polyester laminate (16 GPa) epoxy resins (3-3.5 GPa), sUica-fiUed epoxies (15 GPa), and acetals containing 30% carbon fiber (17.2 GPa). 

General discussions of the effect of reinforcing agents on the thermal properties of polymers include glass fiber-reinforced polyethylene terephthalate [28], multiwalled carbon nanotube-reinforced liquid crystalline polymer [29], polysesquioxane [30, 31], polynrethane [31], epoxy resins [32], polyethylene [33], montmorillonite clay-reinforced polypropylene [34], polyethylene [35], polylactic acid [36, 37], calcium carbonate-filled low-density polyethylene [38], and barium sulfate-filled polyethylene [39]. 

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