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article
Microwave curing of non-traditional polymer materials used in manufacture of injection moulds
Abstract
Microwave heating technology is a cost-effective alternative way for heating and curingof used in polymer processing of various alternate materials. The work presented in this paperaddresses the attempts made by the authors to study the glass transition temperature and curing ofmaterials such as casting resins R2512, R2515 and laminating resin GPR 2516 in combination withtwo hardeners ADH 2403 and ADH 2409. The magnetron microwave generator used in thisresearch is operating at a frequency of 2.45 GHz with a hollow rectangular waveguide. During thisinvestigation it has been noted that microwave heated mould materials resulted with higher glasstransition temperatures and better microstructure. It also noted that Microwave curing resulted in ashorter curing time to reach the maximum percentage cure. From this study it can be concluded thatmicrowave technology can be efficiently and effectively used to cure new generation alternatepolymer materials for manufacture of injection moulds in a rapid and efficient manner. Microwavecuring resulted in a shorter curing time to reach the maximum percentage cure.