[Abstract]: The shrinkage of vinyl ester particulate composites has been reduced by curing the resins under microwave conditions. The reduction in the shrinkage of the resins by microwaves will enable the manufacture of large vinyl ester composite items possible [12-15]. This project is to investigate the difference in impact strength between microwave cured vinyl ester particulate composites and those cured under ambient conditions. Drop weight impact test will be used to achieve the aim of the project [7]The results show that the difference in the impact strength is minimal [5]. The original contribution of this paper is to view the fractured surface of composites cured under different conditions to find out whether they are the same. If they are the same, it can be deduced that the initial pansion of the composite due to microwave irradiation will not affect the final structure of the composite.
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