| Recently, the environment and energy issues is urgent, therefore the new curingtechnology has been the hot-pot of the research field. There are still much controversyabout Microwave curing technology, such as the acceleration mechanism ofmicrowave, the correlation with the change of the chemical reaction and ultimatelycuring state of resin. The research about the related indefinite mechanism or reactionwill promote the application of microwave curing technology. Artificial quartz stoneoften cost a long time to cure completely for the low resin content and the poorthermal conductivity. The poor thermal conductivity results in the increase of innerstress and the bad performance of the materials for the wide temperature gap betweenthe inside and the surface of the sample. Besides, there is a high cost of energy andlow production efficiency. Therefore, the novel microwave curing technology wasprovided which not only to save the energy and enhance the production efficiency, butalso can widen the microwave technology application.In this paper, the sol-gel experiment was designed to investigate that whethermicrowave curing resin eventually change the curing content of the resin or not. Themicrowave acceleration mechanism was studied by Differential calorimetry scanning(DSC). The alternation of chemical structure of resin during microwave curingprocess was studied by Fourier transform infrared spectroscopy (FTIR). The resultshowed that there is a "non-heating effect" in the microwave curing resin processwhich can effectively reduce the activation energy and improve the rate of chemicalreaction. Microwave and thermal curing has the similar curing content and the sameproducts.The optimum composition and the curing time was demonstrated by the largeamount of design experiments. The results showed that the microwave and thermalcuring have the same optimum curing agent amount. The microwave curing time is12minutes, while the curing time of the traditional thermal curing process is about onehour. The results showed that the microwave curing greatly increase the cure rate ofthe curing process. Furthermore, the mechanical properties of microwave curing haveimproved. |
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