In this paper, the conditions of modified melamine formaldehyde resin (MF) used for a flocculent such as the ratio of reactant, reaction time, reaction temperature and the value of pH, were studied. The preferable syn...In this paper, the conditions of modified melamine formaldehyde resin (MF) used for a flocculent such as the ratio of reactant, reaction time, reaction temperature and the value of pH, were studied. The preferable synthetic conditions were melamine:formaldehyde:acrylamide (mole)=1:5:(2～3), reaction temperature 70 ℃, reaction time 4 h, pH 9.0.展开更多
基金Supported by the Science Foundation of Shanghai MunicipalCommission of Education!( 97A2 6 )
文摘In this paper, the conditions of modified melamine formaldehyde resin (MF) used for a flocculent such as the ratio of reactant, reaction time, reaction temperature and the value of pH, were studied. The preferable synthetic conditions were melamine:formaldehyde:acrylamide (mole)=1:5:(2～3), reaction temperature 70 ℃, reaction time 4 h, pH 9.0.
