消泡机理：（1）消泡剂的加入使泡沫表面张力被降低导致泡沫破灭。（2）破

Defoaming mechanisms: (1) addition of antifoam reduced the foam surface tension leads to bubble. (2) an elastic membrane disruption leading to collapse of bubble. (3) causes the liquid film discharge, resulting in collapse of bubble. <br>Mechanism defoamer: After defoaming agent was added to the aqueous coating liquid film into the spontaneous, rapid spreading at the interface. Changing the interfacial properties of the film, so that the membrane rupture. There are many types of defoamers, thus different ways of defoamers to eliminate the foam is also a great difference. But eliminates the elastic foam bubble and surface tension is the major mechanism of action

Defoaming mechanism: (1) The addition of defoaming agent makes the foam surface tension is reduced and the foam bursts. (2) Destroy the elasticity of the membrane and cause the bubble to burst. (3) Promotes liquid membrane drainage, thus causing bubbles to burst.<br> The mechanism of action of defoaming agent: the defoaming agent is added to the water-based coating and then spontaneously enters the liquid membrane, which is spread rapidly on the interface. Change the interface performance of the liquid membrane, so that the membrane ruptures. There are many types of defoamers, so there are many differences in the way different defoaming agents eliminate foam. But eliminating the elasticity and surface tension of the foam is the main mechanism of action.

Defoaming mechanism: (1) the addition of defoamer reduces the surface tension of foam and leads to the burst of foam. (2) destroy the elasticity of the membrane and cause the bubble to burst. (3) promote the liquid membrane to discharge liquid, thus leading to bubble burst.<br>Mechanism of defoamer: after defoamer is added into the water-based coating, it will enter the liquid membrane spontaneously and spread rapidly on the interface. The interface property of the liquid membrane is changed, so the membrane is broken. There are many kinds of defoamer, so the way of eliminating foam by different defoamer is also very different. But eliminating the elasticity and surface tension of bubbles is the main mechanism.<br>