Carboxymethylcellulose–laponite nanocomposites as a temperature-resistant rheological modifier

IF 3.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2024-10-14 DOI:10.1007/s10853-024-10325-z

Zheng Li, Ling Lin, Yuanhao Luo, Shenwen Fang, Pingya Luo, Hongdan Ao, Meirong Wang

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Abstract

Water-soluble polysaccharides generally have the problem of not resistant to high temperature, which limits their application. CMC-LAP nanocomposites were prepared by silanization of sodium carboxymethyl cellulose (CMC) and introduction of nanomaterial laponite (LAP) by APTES. It was found that both the polysiloxane structures formed by APTES and LAP interacted with CMC. Their dual protection of CMC makes the dense network structure still exist in aqueous solution after aging at 150°C. It is very important to maintain the normal rheological properties of drilling fluid. CMC-LAP has great effect as rheological modifier of drilling fluid. The viscosity reduction rate of CMC-LAP drilling fluid after aging at 180°C was only 35%, while that of CMC was 75%. When CMC-LAP is partially degraded at high temperature for a long time in drilling fluid, LAP can play a bridging role in the system through its strong hydrogen bond and electrostatic adsorption. After the system is stable, the network structure will still recover. This network structure enhances the rheological properties of the drilling fluid and improves the ability of the drilling fluid to suspend cuttings and clean the wellbore. We provide a new method to greatly improve the temperature resistance of sodium carboxymethyl cellulose in aqueous solution and maintain normal rheological behavior. The combination of LAP nanomaterials is also a new direction for the study of water-soluble polysaccharides. The materials prepared in this study also show strong application potential in environmentally friendly water-based drilling fluids.

Graphical abstract

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作为耐温流变改性剂的羧甲基纤维素-皂石纳米复合材料

水溶性多糖普遍存在不耐高温的问题，这限制了其应用。通过对羧甲基纤维素钠（CMC）进行硅烷化，并用 APTES 引入纳米材料青石（LAP），制备了 CMC-LAP 纳米复合材料。研究发现，APTES 和 LAP 形成的聚硅氧烷结构都能与 CMC 发生作用。它们对 CMC 的双重保护使得致密的网络结构在 150°C 老化后仍然存在于水溶液中。这对保持钻井液的正常流变性能非常重要。CMC-LAP 作为钻井液的流变改性剂具有很好的效果。在 180°C 老化后，CMC-LAP 钻井液的粘度降低率仅为 35%，而 CMC 的粘度降低率为 75%。当 CMC-LAP 在钻井液中长期高温部分降解时，LAP 可通过其强氢键和静电吸附作用在体系中起桥接作用。体系稳定后，网络结构仍会恢复。这种网络结构增强了钻井液的流变性能，提高了钻井液悬浮切屑和清洁井筒的能力。我们提供了一种新方法，可大大提高羧甲基纤维素钠在水溶液中的耐温性，并保持正常的流变行为。LAP 纳米材料的组合也是水溶性多糖研究的一个新方向。本研究制备的材料在环境友好型水基钻井液中也显示出很强的应用潜力。

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.