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The Effect of Mass Transfer on the Cure Properties of the Urea Resin Moulding Compounds Under the Drying Process  

Kim, Sang Yeul (Division of Metallurgical and Chemical Engineering, Dong-A University)
Choi, Il Gon (Dong Kwang Chemical Co., Ltd.)
Kim, Byoung Chul (Division of Metallurgical and Chemical Engineering, Dong-A University)
Publication Information
Korean Chemical Engineering Research / v.40, no.6, 2002 , pp. 681-686 More about this Journal
Abstract
In the industrial field, the theory of drying process is different from the practical application, and it is effective to reduce energy by recirculation of the heat of exhausting gas. But the study of this field may not be performed still. The cure properties of the urea resin moulding compounds was investigated according to drying temperature, drying time, recycle rate of exhausting gas and moulding temperature in the process of drying and moulding. We obtained the following results; water content of material decreases with increasing drying time and drying temperature, and the rate of drying also decreases with increasing recycle rate of exhausting gas. Specially, The cure fluidity of the urea resin moulding compounds decreases, with increasing drying temperature, recycle rate of exhausting gas and moulding temperature. And the correlation equations on water content and cure fluidity of the urea resin moulding material were obtained through a regression analysis of experimental data.
Keywords
Wafer Content; Dryrate; Moulding Temperature; Fluidity; Exhausting Gas;
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