The antifoaming principles of antifoamingagents were analyzed in theory, and the selection principles and evaluation methods were described.
从理论上分析了消泡剂的消泡原理，概述了消泡剂的选用原则及评价方法。
2
The application of antifoamingagents in the desorption of VCM in the degassing tank and the stripping tower for the production of SPVC were indicated in detail.