Blowing agent can be used in oil field, concrete, rubber, plastic,fly ... bubbles by the single bubble foam. The essence of foaming agent is its surface activity. No surfactant effect, we can not ... make foam, and it can not become a foaming agent, surface activity is the core of foaming. 2. Usage and ... )>1305min (mm)>120Life period of liquid level (min)≥30 Blowing Agent