摘要
本文以水为溶剂,以铈盐或其他变价金属离子为引发剂,在反应温度0±1℃下,使纤维素与乙烯类单体共聚,制得纤维素接枝共聚反应产物,接枝率高达80%以上。就所得共聚产物对水泥浆流变性、稳定性、失水量、稠化时间等性能的影响进行了研究。结果证明,经接枝改性的纤维素具有更好的耐热性和耐微生物酶解性,对水泥浆有良好的降失水性和分散性,与其他外加剂相容性好,降失水性超过美国哈里伯顿公司的水泥浆降失水剂 Halad 22A,是一种新型水泥浆降失水剂。
A cellulose graft copolymer(CGC)was synthesized by initiated graft copolymerization of vinyl monomers onto modified cellulose in aqueous solution using ceric or other transition metallic ions.The percent grafting amounts to 80% and over.The effects of the CGC on fluid loss,rheological behavior,free water,thickening time of cement slurries were stud- ied.The results show that the heat resistance,resistace to microorganisms attack,fluid loss control and dispersive power of CGC are very well.The fluid loss control property of CGC is much better than that of Halad 22A,Halliburton Co.
出处
《油田化学》
CAS
CSCD
北大核心
1989年第2期100-104,共5页
Oilfield Chemistry
