ABSTRACT:

Research Article

Synthesis, Characterization and Glass - Reinforced Composites of Thiourea - Formaldehyde - Phenol Resin
KANUPRASAD DAHYALAL PATEL*, DHIRUBHAI J. DESAI,
MANISH M. MOREKAR, and YOGESH SHRIKANT TILAK
Chemistry Department, V.P. & R.P.T.P. Science College, Sardar Patel University, Vallabh Vidyanagar - 388 120, Gujarat, India

N,N'-Dimethylol thiourea-formaldehyde (DMTUF) resin having the methylol group (-CH2OH ) has been prepared and characterized. The condensation of DMTUF resin with Phenol (P) was carried out in the presence of alcoholic alkali catalyst at varying ratios of DMTUF: P, namely 1:1, 1:1.5 and 1:2. The resultant DMTUFP resin was characterized by elemental analysis, IR spectral studies, number average molecular weight ( ) estimated by non-aqueous conductometric titration, and thermo gravimetry. The curing study of DMTUFP resin with hexamethylene tetramine (HMTA) was monitored by differential scanning calorimetry (DSC) and kinetic parameters were evaluated. Glass-reinforced composites based on the DMTUFP-HMTA system have also been prepared and characterized.