Polypropylene compositions glass-fibre reinforced

Mader, E. Moos, E. Karger-Kocsis, J. (2001). Role of Film Formers in Glass Fibre Reinforced Polypropylene - New Insights and Relation to Mechanical Properties. Composites Part A Applied Science and Manufacturing, Vol.32, No.5, pp. 631-639 ISSN 1359-835X... 

Nishitani, Y. Sekiguchi, I. Hausnerova, B. Zdrazilova, N. Kitano, T. (2007). Rheological Properties of Aminosilane Surface Treated Short Glass Fibre Reinforced Polypropylenes. Part 1 Steady Shear and OsHllatoiy Flow Properties in Molten State. Polymers Polymer Composites, Vol.l5, pp. 111-119 ISSN 0967-3911... 

Thomason, J.L. Vlug, MA. (1996). Influence of Fibre Length and Concentration on the Properties of Glass Fibre-reinforced Polypropylene 1. Tensile and Flexural Modulus. Composites Part A Applied Science and Manufacturing, Vol.27, No.6, pp. 477-484 ISSN 1359-835X... 

O90ni Onishi, P., Hashemi, S. Effect of fibre concentration and strain rate on mechanical properties of single-gated and double-gated injection-moulded short glass fibre-reinforced polypropylene copolymer composites. J. Mater. Sci. 44 (2009) 3445-3456. 

JL Thomason, MA Vlug. The influence of fibre length and concentration on the properties of glass fibre-reinforced polypropylene. Part 1. Tensile and flexural Modulus. Composites A 27 477-484, 1996. 

Astrdm, B. T. and Carlsson, A., Experimental investigation of pultrusion of glass fibre reinforced polypropylene composites . Composites Part A Applied Science and Manufacturing, 29A, 585-593, 1998. 

It was proved that the long fibres assure to the composites a higher resistance that the short ones, and are characterised by specific fracture properties. The microstructure and fracture mechanical behaviour of injection-moulded longer glass fibres reinforced polypropylene (Verton, aspect ratio 320) were studied as a function of the fibre volume fraction and compared to that of a shorter... 

Table 5.3 Critical fibre length and interfadal shear strength values for glass-fibre reinforced polypropylene compositions determined by a single-fibre fragmentation technique (adapted from [78]) ...

Synergy in hybrid reinforcement of thin sheet composites made from conti nuous fibril lated polypropylene net and glass fibre reinforcement in the form of fabric and... 

M. Hou and K. Friedrich, Resistance welding of continuous glass fibre-reinforced polypropylene composites. Compos Manuf, 3(3), 153-163, 1992. 

Figure 29. Fiuman osteoblast-like MG 63 cells in cultures on material surfaces modified with carbon nanoparticles. A fullerene Cgo layers deposited on carbon fibre-reinforced carbon composites (CFRC), B fullerene C o layers deposited on microscopic glass coverslips, C terpolymer of polytetrafluoroethylene, polyvinyldifluoride and polypropylene, mixed with 4% of single-wall carbon nanohorns, D the same terpolymer with high crystalline electric arc multi-wall nanotubes, E diamond layer with hierarchically organized micro- and nanostmcture deposited on a Si substrate, F nanocrystalline diamond layer on a Si substrate. Standard control cell culture substrates were represented by a PS culture dish (G) and microscopic glass coverslip (FI). Immunofluorescence staining on day 2 (A) or 3 (B-Fl) after seeding, Olympus epifluorescence microscope IX 50, digital camera DP 70, obj. 20x, bar 100 pm (A, C, D, G,H)or 200 pm (B, E, F) [16].

As it is commonly known and applied for a long time, the properties of paste can be improved by reinforcement with the fibres. For example, the production of asbestos-cement materials started 80 years ago. The fiber reinforcement technology has been developed extensively for the last 20 years and the other fibres has been taken into account, first of all the steel fibres, but also the carbon, glass, resin, polypropylene and cellulose fibres as well. The fibres reinforcement gives the pos-sibihty to enhance the flexural and tension strength, as well as the impact resistance. The fibre composite modifies the properties of concrete by control cracking and the mode of failure by means of post—cracking ductility. 

Lee, N.-J. Jang, J. (1997). The Use of a Mixed Coupling Agent System to Improve the Performance of Polypropylene-Based Composites Reinforced with Short-Glass-Fibre Mat. Composites Science and Technology, Vol.57, No.l2, pp. 1559-1569 ISSN 0266-3538... 

Fibre-reinforced NR composites are manufactured by various processes, the most common being extrusion, injection moulding and compression moulding (Figure 9.6). To fabricate glass-reinforced NR composites with unidirectional long fibres, extrusion is not used because this process can only result in short fibre-reinforced polypropylene composites (a few millimetres at most). 

In another study (Wambua et al., 2003), mechanical properties of the different natural fibre composites have been tested and compared with glass mat-reinforced polypropylene composites and tend to be quite similar. It can be tmderlined that impact properties of hemp appear to outperform kenaf fibres. 

Hufenbach, W., Bohm, R., Thieme, M., Winkler, A., 2011. Polypropylene/glass fibre 3D-textile reinforced composites for automotive applications. Mater. Des. 32, 1468-1476. 

The normal test for dynamic evaluation of materials or components is the Wohler fatigue test, to characterize fatigue behaviour. Hysteresis measurements are carried out on flax and glass mat-reinforced polypropylene, with a needle-punched flax mat using green and retted fibres to make plates with a quasi-isotropic composite structure, and with treatment by a coupling agent. 

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