关键词: β－羟基烷基丙基醚胺 , 阳离子度 , 吸附量

Abstract: The cationic polymer PEA was synthesized by ring-opening reaction and quaterisation with epichlorohydrin and β-hydroxy alkyl propyl ether amine as the main materials. Study on the effect of rate of charge, reaction time and reaction temperature on cationic degree and epoxy value. Capability of adsorption on the sand and anti-swelling resistance were studied. The results show that the best polymerization conditions as follows, reaction temperature is 60 ℃, reaction time is 6 h, the rate of charge of epichlorohydrin toβ-hydroxy alkyl propyletheramine is 2.5∶1. Under these conditions, the cationic degree of PEA is 3.962 mmol/g, epoxy value is 0.12. The best adsorption concentration of PEA on the sand surface is 2 000 mg/L, the best liquid-solid mass ratio is 15∶1, the best adsorption time is 18 h. The PEA has good ability to prevent clay swelling, anti-swelling rate was 87%.

Key words: β-hydroxy alkyl propyl ether amine, Cationic degree, Adsorption capacity