Abstract: The paper studies the influence of different curing exothermic temperature and curing time on the final Tg of novolac vinyl ester. Thus, we design two extreme curing process, i.e, the resin cured in good heat conductive material of stainless steel mold and insulation materials of plastic beaker. Tg, curing degree and the double bond surplus ratio of oligomer and styrene are analyzed. Further, the change of performance parameter mentioned above is investigated through prolonging curing time at room temperature and high temperature post curing. As a result, in contrast to the resin cured in insulation materials of plastic beaker, Tg of the resin cured in good heat conductive material of stainless steel mold is lower and is difficult to reach the former Tg through prolonging curing time at room temperature and high temperature post curing.

Key words: novolac vinyl ester, different cure environment, Tg, curing degree