2Wang K S, Chiou I J, Chen C H, et aL Lightweight properties and pore structure of foamed material made from sewage sludge ash[J]. Construction and Building Materials,2005 (19):627-633.
3Flynn, Gregory J, John M, et al. Lubricant additives for paper coating eompositions[P].US: 19950934441. 1995- 9-25.
4Paul B. Emulsions theory and practice [M]. New York: Reinhold Publishing Corporation,1957:268-276.