M. Wahyu Sya’bani, Warmiati dan Kutut Aji Prayitno
This study aims to obtain the curing kinetics of modified PF resin using sodium metasilicate. Three process step is involved; polimerization of PF resin, thermal analysis and evaluation. In polimerization, phenol and formaldehyde is reacted with sodium hidroxide as catalyst in batch reactor. Then, resin obtained are modified with sodium silicate. Dynamic kinetics are done by calculating the heat flow when curing process occurs using Differential Scanning Calorimetry (DSC). The temperature and heatflow data obtained at peak exotherm curve are used for calculating the kinetics. Resin structure are studied using FT-IR and SEM.
The calculation result using Ozawa-Flynn-Wall (OFW) methods give us activation energy (Ea) 1,10142 x 105 J/mol. When using Kissinger-Akihira-Sunose (KAS) methods the activation energy (Ea) are 0,9955 x 105 J/mol. FTIR analysis shows that there are O-H, aldehyde and C=C aromatics functional groups which is the structure of PF Resin.
Keywords : PF Resin, Modifiers, Kinetics