The cure of an unsaturated polyester coating was studied by using experiments and a model of the process. Experiments involved spraying the catalyst-resin mixture on a surface and following the hardness of the coating. The numerical model takes into account the heat transferred by convection at the surface of the coating and by conduction through the coating and the surface, as well as the heat generated by the cure reaction. The kinetics of heat evolved from the cure reaction was determined by calorimetry. The effect of various parameters, such as the temperature of the surrounding and the thickness of the coating was studied by considering the state of cure and the hardness.
Get full access to this article
View all access options for this article.
References
1.
AgrawalJ.P., in “Composite Materials”, Desidoc Publ., Pune, India (1990).
2.
VergnaudJ.M. and BouzonJ., in “Cure of thermosetting resins”, Springer Verlag Publ., London (1992).
3.
AzaarK., El BrouziA., GrangerR. and VergnaudJ.M., Effect of temperature on the cure of a sheet of maleic polyesterresin heated by oil. Modelling and experiments. Europ. Polym. J., 28 (1992) 159.
4.
HadiH., AzaarK., El BrouziA., GrangerR. and VergnaudJ.M., Injection moulding of thermosets. Effect of the temperature of injection. Europ. Polym. J., 29 (1993), 575.
5.
ChaterM. and VergnaudJ.M., Study of the process of cure of epoxide resin heated by liquid oil at constant temperature. Europ. Polym. J.24 (1988) 245.
6.
PusatciogluS.Y., HasslerJ.C., FrickeA.L. and McGeeH.A., Effect of temperature gradients on cure and stress gradients in thick thermoset castings. J. Appl. Polym. Sci.25 (1980) 381.
7.
HutchinsonJ.M. and NixonJ.A., Analysis of the cure of sheet moulding compound. II. Application of the model to various moulding geometries. Plast. Rubber Process. Applic., 5 (1985) 359.
8.
ChataingG., ChaterM. and VergnaudJ.M., Determination of heat flux and profiles of temperature and state of cure in isothermal calorimetry with reaction of high enthalpy. Thermochim Acta.89 (1985), 107.
9.
ArmandJ.Y. and VergnaudJ.M., Effect of the enthalpy, sample size and heating rate on the cure reaction of rubber in DSC. Thermochim. Acta.112 (1987), 313–323.
10.
VergnaudJ.M., Modelling in calorimetry working under isothermal conditions or in scanning mode. Thermochim. Acta.114 (1987) 15.
11.
FerradouC., RochetteB. and VergnaudJ.M., Effect of a variation in kinetic parameters (rate constant, activation energy) on the vulcanization of rubber sheets in injection molding process, J. Appl. Polym. Sci., 30 (1985) 2663.
12.
SalhiA., GrangerR. and VergnaudJ.M., Testing the kinetic and thermal parameters for the cure of an unsaturated polyester. Thermochim. Acta., in press.
13.
SourourS., and KamalM.R., Differential scanning calorimetry for characterization of thermoset cure. SPE Techn. Papers18 (1972) 93.
14.
ElderJ.P., Multiple reaction scheme modelling. V. Mutually independent phase boundary movement controlled reactions. J. Thermal Anal.39 (1993) 467.
15.
LamP.W.K., The characterization of thermoset cure behaviour by differential scanning calorimetry. Part 1: Isothermal and dynamic study. Polym. Composites, 8 (1987) 427.
16.
McAdamsW.H., in Heat Transmission, McGraw Hill Series, London (1954), 167.
