引用本文:
刘祥, 吕伟, 李谦定. 交联-羧甲基复合变性淀粉的流变与降失水性能[J]. 应用化学,
2007, 24(3): 357-360.
Citation: LIU Xiang, LÜ Wei, LI Qian-Ding. Rheological and Water-loss Control Properties of Crosslinking and Carboxymethylation Composite Modified Starch[J]. Chinese Journal of Applied Chemistry, 2007, 24(3): 357-360.
Citation: LIU Xiang, LÜ Wei, LI Qian-Ding. Rheological and Water-loss Control Properties of Crosslinking and Carboxymethylation Composite Modified Starch[J]. Chinese Journal of Applied Chemistry, 2007, 24(3): 357-360.
交联-羧甲基复合变性淀粉的流变与降失水性能
摘要:
以马铃薯淀粉和氯乙酸为主要原料,通过交联-醚化制备了交联-羧甲基复合变性淀粉(CCMS),考察了所得CCMS糊液的流变性能和在钻井泥浆中的降滤失水性能,并对其降失水原理进行了探讨。结果表明,在质量分数为0.5%~4.0%、温度为20~60℃的实验条件下,CCMS糊液表现为假塑性流体特征,符合Ostwald-Dewaele的经验公式ηa=Kγn-1;将CCMS与中粘羧甲基纤维素(MV-CMC)进行对比实验,结果发现,在饱和盐水泥浆和4%盐水泥浆中,当其用量分别为MV-CMC质量分数的57%和75%时,就可达到钻井液用MV-CMC的增粘、降滤失水性能指标。
English
Rheological and Water-loss Control Properties of Crosslinking and Carboxymethylation Composite Modified Starch
Abstract:
Composite modified starch(CCMS) with a high viscosity was prepared by means of crosslinking and carboxymethylation with potato starch and chloroactic acid as the major raw material. The rheological and water-loss control properties of CCMS were investigated in detail. The mechanism of water-loss control was also explored. The results show that the paste of CCMS with a dosage of 0.5%~4.0% behaved as a pseudoplastic liquid at 20℃ to 60℃, which conformed to the empirical formula of the Ostwald-De waele equation ηa=Kγn-1; CCMS was compared with MV-CMC, and it was found that the performance indexes for viscosity increase and water-loss control of CCMS matched that of MV-CMC when the loading of CCMS was only 57% and 75% that of MV-CMC in saturated salt water mud and 4% salt water mud, respectively.
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