Polypropylene glass fiber filled

Figure 14.11. The average length of fiber prior to and after processing in glass fiber filled polypropylene. [Data from Averous L, Quantin J C, Lafon D, Crespy A, Int. J. Polym. Analysis and Characterization, 1, No.4, 1995, 339-47.1...

Ektar FB PG Glass fiber-filled polypropylene, PP Eastman Chem. Prod. 

MPP-FG Glass fiber filled polypropylene, PC Modified Plastics... 

M Fujiyama. Structures and properties of injection moldings of glass fiber-filled polypropylene. Int Polymer Proc VIII 245-254, 1993. 

A comparison of the properties of surface-treated phlogopite mica with talc, calcium carbonate, glass, and the unfilled resin is given in a technical bulletin produced by Marietta Resources International, Ltd. (10). Table 14.7 shows that 40 wt% mica-filled polypropylene (Profax 6523) had a higher flexural modulus than 30 wt% glass fiber-filled polypropylene (1.04 X 10 psi versus 0.93 X 10 psi). The compound filled with 40 wt% surface-modified mica also had higher Izod impact than the 40 wt% talc-filled compound (0.65 versus 0.45 ft-lb/in). 

Thermal conductivity studies have been conducted on a wide range of filled polymers and composites, including carbon fibers [62-68], aluminum powder [65], nitride [66], magnetite, barite, talc, copper, strontium ferrite [67], glass fiber-filled polypropylene and manganese or iron-filled polyaniline, carbon nanotubes [68], and nickel-cobalt-zinc ferrite in natural rubber [70]. 

Melt flow stndies have been reported on polypropylene [91], isotactic butadiene [92], glass fiber-filled polypropylene [93], and low-density polyethylene [94],... 

Comparing the Mori-Tanaka s average strain model with experimental data on commercial short glass fiber filled polypropylene composites. 

D. Basu, A.N. Banerges, A. Misra. Comparative rheological studies on Jute-Fiber and Glass-Fiber-filled Polypropylene composites melts. /. Appl. Polym. Sci, 46, 1999-2002,1992. 

Capillary Rheometer and an Extruder Are They in Agreement One can ask a reasonable question If rheology data are obtained in a capillary rheometer, are they applicable to an extruder To answer this question, at least for a specific set of conditions, a direct comparison was made [31]. It was found that the capillary rheometer and extruder are in good agreement for neat plastics (polystyrene and polypropylene), but extruder systematically measures lower viscosities in glass-fiber-filled plastics. 

The first plastic sabots were made of glass-fiber filled diallylphthalate sheathed in nylon and they included metal reinforcements whenever it was felt necessary to redistribute the stresses. The nylon sheath was necessitated by the abrasive nature of glass-filled materials. Nylon also is used for rotating bands on projectiles and on metal sabots. Other plastics used for the structural portions of sabots include polypropylenes, polycarbonates, celluloses, epoxies and phenolics. Polyethylene, neoprene, and silicone rubbers are used for seals and obturators... 

Fig. 4.171 Flexural-creep modulus of unreinforced, talcum filled and glass fiber reinforced polypropylene at 20 °C [98Dom].

The final combination of ingredients promotes an adhesive bond between the polymer matrix and load-bearing glass-fiber reinforcement. Consequently, the physicochemical characteristics of the microstructure based on the interphase design determine the ultimate mechanical and other properties of filled or glass-fiber reinforced polypropylene resins. 

P. F. Bright, R. J. Crowson and M. J. Folkes, A study of the effect of injection speed on fiber orientation in simple mouldings of short glass fibre-filled polypropylene. Journal of Materials Science, 13, 2497-2506 (1978). 

Table 7.10 somewhat positions typical natural fibers such as jute and kenaf vs. glass fiber, when used at equal level in polypropylene. Tensile, flexural, and impact properties, along with water absorption and specific gravities were measured on injection molded samples. As can be seen, natural fibers composites are quite challenging the glass fibers-filled composite with however a significant difference in moisture sensitivity. 

A flat 40 mm by 230 mm plaque with a thickness of 3 mm was used to represent the low pressure mold filling application. The material used was an ABS that was dried at 85°C for three to four hours. The same 40 by 230 mm plaque was used, but with a thiekness of 1.5 mm, to represent the high pressure mold filling apphcation. The material used was a 40% long glass fiber reinforced polypropylene. 

Recendy, storm doors have been constmcted of advanced thermoplastic composites. Stampable, glass-mat reinforced polypropylene sheet is used to create a high strength outer skin. These compression molded skins are welded together using a friction or ultrasonic process then injection molded with a polyurethane foam core to produce an insulated structure. New technology for window frames incorporate the pultrusion of frame channels to produce a thermoset composite channel that can be filled with fiber glass for further insulation enhancement (12,31,33,34,48,49,54—56,60—67). 

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