1、chemical foamer and feed system
2、Wall body material has been made by using hemihydrate gypsum, cement and composite foamer.
3、The paper studied the effect of different foamer, foam stabilizer and alkali on foam stability in foam combination system.
4、Single long sand pack experiment indicated injecting foamer and nitrogen alternately could form fine and smooth foam at front end face of core.
5、The influence of the materials, recipe, technology and equipments on extrusion of PVC foam by using chemical foamer are introduced. And it is significant for practical production.
6、The effect of the co-compounding ingredients of foamer, polymer and alcohol, the concentration of acid and temperature on foaming ability and stability of foam acid has been studied in this paper.
