环氧氯丙烷改性纤维素溶液的流变与减阻性能

发布时间：2019-04-08 17:22

【摘要】：为提高羧甲基羟乙基纤维素(CMHEC)溶液的黏弹性,拓宽其应用范围,以环氧氯丙烷(EPIC)与CMHEC进行反应,首次制备出水溶性改性羧甲基羟乙基纤维素EPIC-CMHEC。研究了EPIC-CMHEC和CMHEC水溶液的流变特性(流动曲线、黏弹性、本构方程、触变性等)以及减阻性能。结果表明,EPIC-CMHEC溶液黏度显著提高,其3 g/L水溶液黏度为56.6 m Pa·s,比3 g/L CMHEC水溶液的黏度(18.3 m Pa·s)提高了2.1倍,且弹性也优于CMHEC溶液。在170 s-1剪切下,温度从20℃升至80℃后,0.3%EPIC-CMHEC溶液的黏度约为19 m Pa·s,仍高于25℃时0.3%的CMHEC溶液的黏度;EPIC-CMHEC溶液的减阻性能也明显提高,0.10%的EPIC-CMHEC和CMHEC溶液最大减阻率分别为72.70%和68.41%。EPIC-CMHEC和CMHEC溶液的流动曲线可用Cross本构方程进行表征,EPIC-CMHEC可望用于油气田开采和减阻领域。
[Abstract]:In order to improve the viscoelasticity of carboxymethyl hydroxyethyl cellulose (CMHEC) solution and broaden its application range, water soluble modified carboxymethyl hydroxyethyl cellulose EPIC-CMHEC. was prepared by the reaction of epichlorohydrin (EPIC) with CMHEC for the first time. The rheological properties (flow curves, viscoelasticity, constitutive equations, thixotropy, etc.) and drag reduction properties of EPIC-CMHEC and CMHEC aqueous solutions were studied. The results showed that the viscosity of EPIC-CMHEC solution was significantly increased. The viscosity of 3 g / L aqueous solution was 56.6 m Pa 路s, which was 2.1 times higher than that of 3 g / L CMHEC solution (18.3 m Pa 路s), and its elasticity was better than that of CMHEC solution. When the temperature increases from 20 鈩，

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