Zainudin Z., Arumugam G.C., Che Man S.H., Baharulrazi N., Mohamad Z., 2021, Optimization of Process Parameters and Adhesive Properties of Liquid Epoxidized Natural Rubber/Epoxy Blends, Chemical Engineering Transactions, 89, 445-450.
The use of adhesives marks a new epoch in the structure-joining technology as using polymeric material is more sustainable, lower possible curing temperature, fine pitch capability and lightweight as compared to tin-lead soldering. In this study, the optimization of process parameters such as curing time and Liquid epoxidized natural rubber (LENR) loading was carried out using central composite design (CCD) in response to surface methodology (RSM) to determine the optimum condition for achieving maximum adhesive properties (shear strength and peel strength) of epoxy/liquid epoxidized natural rubber (LENR) blend. Analysis of variance (ANOVA) analysis shows that the coefficient of determination for both shear and peel strength models were 0.9838 and 0.9909 indicating a high correlation between the actual values and predicted values. The optimum conditions for a maximum predicted shear strength value of 8.37 MPa was 20.65 parts per hundred rubber (phr) liquid rubber (LR) loading for 6.94 curing days and for a maximum predicted peel strength value of 500 J/m was 18.44 phr for 3.75 curing days. This study reports under optimized conditions, it showed the potential of LENR as one of the most effective ways to improve the adhesive properties of epoxy resin.
