我们于1975年在聚氯乙烯油膏的基础上,试制成功了塑料油膏。塑料油膏防水性能可靠,原料易得,成本低廉,因而受到建筑部门的欢迎,并获得全国科学大会的奖励。在湖南省已先后办起了十多个油膏生产厂。但是,由于这种油膏是先成胶型,即油膏在生产过程中已加热溶融成胶,运至施工 In 1975, we successfully tested plastic ointment on the basis of PVC ointment. The plastic grease is reliable in waterproof performance, easy to obtain raw materials, and low in cost, so it is welcomed by the construction department and rewarded by the National Science Conference. In Hunan Province, more than a dozen grease production plants have been established. However, since this ointment is a pre-gel type, that is, the ointment has been heated and melted in the production process and transported to the construction site.