【摘要】：為提高羧甲基羥乙基纖維素(CMHEC)溶液的黏彈性,拓寬其應(yīng)用范圍,以環(huán)氧氯丙烷(EPIC)與CMHEC進行反應(yīng),首次制備出水溶性改性羧甲基羥乙基纖維素EPIC-CMHEC。研究了EPIC-CMHEC和CMHEC水溶液的流變特性(流動曲線、黏彈性、本構(gòu)方程、觸變性等)以及減阻性能。結(jié)果表明,EPIC-CMHEC溶液黏度顯著提高,其3 g/L水溶液黏度為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,且彈性也優(yōu)于CMHEC溶液。在170 s-1剪切下,溫度從20℃升至80℃后,0.3%EPIC-CMHEC溶液的黏度約為19 m Pa·s,仍高于25℃時0.3%的CMHEC溶液的黏度;EPIC-CMHEC溶液的減阻性能也明顯提高,0.10%的EPIC-CMHEC和CMHEC溶液最大減阻率分別為72.70%和68.41%。EPIC-CMHEC和CMHEC溶液的流動曲線可用Cross本構(gòu)方程進行表征,EPIC-CMHEC可望用于油氣田開采和減阻領(lǐng)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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