Glass reinforced polymer

Since corrosion involves a reaction of a metal with its environment, control may be effected through either or both of the two reactants. Thus control could be based entirely on the selection of a particular metal or alloy in preference to all others or the rejection of metals in favour of a non-metallic material, e.g. by a glass-reinforced polymer (g.r.p.). At the other extreme control may be effected by using a less corrosion-resistant material and... 

Acrylacon Fibrous glass-reinforced polymers Rexall... 

Fig. 11.25 Schematic of twin-screw compounding system for producing glass-reinforced polymer pellets. [Reprinted by permission from D. B. Todd and D. K. Baumann, Twin Srew Reinforced Plastics Compounding, Polym. Eng. Set, 18, 321-325 (1978).]...

The design and construction of atmospheric storage tanks for the petroleum industry are covered by the American Petroleum Industry standards API 650 (2003) and 620 (2002). Other standards are also used internationally, for example, British Standard BS 2654 and European Standard EN13121 for glass-reinforced polymer tanks. The design of storage tanks is covered in the books by Myers (1997) and Jawad and Earr (1989). See also the papers by Debham et al. (1968) and Zick and McGrath (1968). 

The worldwide production of textile glass libers was ca. 2 10 t/a in 1993. An increase to 3 10 t/a is expected by the end of the twentieth century. The USA, Western Europe and Japan together produce about thereol. with an increasing share being produced in Eastern Europe and in Asia. The USA production in 1993 was 794 10 t/a with a value of 2.523 million US. The current Europetin market for glass-reinforced polymers is 1.3 10 t/a, with 196 10 t/a being produced in the Federal Republic of Germany. 

Ganchev, S. 1.. Carriveau. G.. and Qaddoumi, N. (1994), Microwave detection of defects in glass reinforced polymer composites. Proc. of the SPIE, Advanced Microwave and Millimeter-wave Detectors Conf.. Vol. 2275, pp. 11-20. 

T Hodgkiess, M J Cowling and M Mulheron, Durability of glass reinforced polymer composites in marine environments. Conference Structural Materials in Marine Environments, loM/MTD/IMechE/IMarE, London, May 1994, pp 58-72. 

Inspection of the data in Table 6.7 reveals that in absolute terms the flexural moduli of the common structural metals aluminium and steel are respectively 7 and 20 times greater than their present glass-reinforced polymer competitors. When a comparison is made of the specific flexural modulus property, then the difference between the metals and structural plastic reduces to about 3 5 times. For example, steel is about three times stifler than polycarbonate. Exceptionally, however, glass-filled EPDM and RIM urethane still have specific modulus properties of approximately 20-65 times less than the reinforced hard plastic resins and metals. Therefore, as a simple material replacement comparison, for a RRIM urethane or glass-filled EPDM, to replace a metal component and maintain the same stiffness inevitably means using a much greater volume of polymer... 

Kennedy II, K. C. and Kusy, R. P. (1995), UV-cured pultrusion processing of glass-reinforced polymer composites . Proceedings of the 53rd Annual Technical Conference, Part 1 (of 3), Boston, US. 

X 10 to 32 X 10-1 1/Pa [6000 x 10-i°-16 x 10 (in.3 min)/(ft Ibf h)]. These frictional and wear characteristics, combined with ontstanding creep resistance, indicate suitability for bearing applications. Glass-reinforced ETFE is less abrasive on mating surfaces than most glass-reinforced polymers. Its static... 

Changes in weight and in tensile strength of both unstrained and strained unreinforced and glass reinforced polymers at 73° F and 180° F are presented in Tables 3-19 through 3-21. 

The several techniques available to produce filled polymer materials vary greatly in their methods and results. Extensive experience with pre-compounded glass-reinforced polymers reveals that the physical properties of the product vary significantly (Table 5.2) with various compounding techniques [16-19]. What one should look for in a compounding machine and what one should consider when setting up a compounding operation are very important to understand. 

Fiber Reinforced Plastics Fiber reinforced plastics (FRP) or polymer matrix composites (PMC) are now frequently used in automotive, aerospace, boating, sporting goods, construction and other applications. Unfortunately, these products go by many different names. For example the FRP materials made with glass fibers often are call glass reinforced polymers (GRP) or simply fiberglass. 

These materials are shaped by reaction processing, such as screw transfer injection or compression moulding, although glass reinforced polymers (GRP) are frequently moulded using hand lay-up or spray techniques. The injection techniques and compression moulding of cross-linking plastics do not have... 

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