Studies have been done to understand the cause of decay of tear/tensile properties at elevated temperatures. It has been found that tensile/tear properties are dependent on total number of crosslinks and less dependent on main chain modifications. Above a certain critical crosslink density there occurs a drastic fall in strength properties especially when measured at elevated temperatures. The use of 1,3 bis (citraconimidomethyl) benzene (Perkalink 900) has been explored to counteract the fall in strength properties.