How is the functional resin prepared from Azadirachta indica gum, and what roles do cobalt naphthenate and MEKP play in the composite fabrication?

The A. indica gum is ground to a fine powder, soaked in distilled water for a full day, mixed with general-purpose polyester solution in a 1:2 ratio, and heated at about 80°C for roughly 6 hours with continuous stirring. Cobalt naphthenate acts as a catalyst to complete polymerization, while MEKP acts as a hardener to expedite the chemical reaction.

The source reports that the gum was procured from a nearby dealer and milled into a fine powder with particle size of 0.5 mm. This powder was then combined with distilled water and allowed to soak for an entire day. The homogeneous solution obtained was treated in a 1:2 ratio with a general-purpose polyester solution and heated for approximately 6 hours at 80°C while stirring, yielding the functional resin. For composite fabrication, cobalt naphthenate is described as a catalyst that completes the polymerization, and Methyl Ethyl Ketone Peroxide (MEKP) is described as a hardener that accelerates the chemical reaction.