| Abstract:The forming principle and disservice of the froth as well as different types of the defoaming agent were discussed, and the applications of different defoaming agents in papermaking process were compared. The results indicated that alcohols defoaming agent is easier to control in low speed paper machines or producing sized papers, the cost is low and the products have good sizing efficiency. On the contrary, in high speed paper machines or producing unsized papers, ethers defoaming agent is better and defoaming effect is faster. |
