Method for preparing polymer microsphere, obtained polymer microsphere and application

The invention discloses a method for preparing a polymer microsphere, an obtained polymer microsphere and application. According to the method, suspension polymerization is adopted, a mixed oil phasesystem composed of a polymerizable monomer, a crosslinking agent, an initiator and a foaming agent is added into an aqueous dispersion system and mixed to form a suspension system, and the suspensionsystem is heated to carry out polymerization to obtain the polymer microsphere. The polymer microsphere can be used in a coating composition after a heat treatment. When the polymer microsphere is applied to a coating after a heat treatment, the density of the coating can be reduced by 30%-50%, the coating rate is increased by 30%-50%, and the use cost of the coating can be saved by 10%-40%. 本发明公开了一种制备聚合物微球的方法及得到的聚合物微球与应用，其中，所述方法利用悬浮聚合进行，将可聚合单体、交联剂、引发剂和发泡剂的混合油相体系加入水系分散体系中，混合形成悬浮体系，然后加热聚合，得到所述聚合物微球。所述聚合物微球可以在热处理后应用于涂料组合物中。当将本发明所述聚合物微球在热处理后用于涂料时，可使涂料密度减少30％-50％，涂布率增加30％-50％，在经济效益上可节省涂料使用成本的10-40％。