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| A Prediction Model for Monomer Conversion in the Pre-synthesis Process of Melamine formaldehyde Resin |
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| DOI：10.11980/j.issn.0254-508X.2016.06.009 |
| Key Words:formaldehyde melamine-formaldehyde resin monomer conversion kinetics prediction model |
| Fund Project:国家自然科学基金项目(21576105)；华南理工大学制浆造纸工程国家重点实验室自主创新研究基金(2015ZD01)。 |
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| Abstract:The aim of this study was to develop a predictive model to monitor the change of monomer conversion rate during the pre-synthesis process of melamine-formaldehyde resin. The effects of process parameters (reaction time, temperature and melamine/formaldehyde mole ratio) on the monomer conversion rate were investigated. The results showed that monomer conversion rate had an alogarithmical linear relationship with time, a linear relationship with temperature and a quadratic function relationship with the reciprocal of mole ratio of the monomers.Based on these relationships, an predictive model, R=(0.125T-3.43)×(-27.2r2+22.0r-3.30)×ln(0.317t+1), was developed to predict the monomer conversion rate of formaldehyde during the synthesis process. A good linear correlation (R2=0.993) between the predictive value and practical determination, indicated that the model had good accuracy and reliability for predicting the monomer conversion rate during the synthesis process. The developed model could provide a useful guideline for the production of melamine-formaldehyde resin. |
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