自密封胶凝系统微胶囊规模化生产的膜乳化研究

Claire Riordan, D. Palmer, A. Al-Tabbaa
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引用次数: 1

摘要

胶凝系统中基于胶囊的自密封是一种有利的方法,它有可能减少水的侵入,从而提高系统的耐久性并延长其使用寿命。如果考虑将基于胶囊的自密封作为工业解决方案,则必须在保持胶囊质量和批次可重复性的同时扩大生产规模。在这项研究中,使用Micropore Technologies提供的膜乳化设备生产含有市售防水剂的聚氨酯外壳微胶囊,然后进行界面聚合。采用三种不同的交叉流膜乳化装置(AXF-1、AXF-3和AXF-4)进行生产,将胶囊悬浮液的产量提高到最大850 L/hr。生产后,对胶囊进行表征,测量平均尺寸和尺寸分布,并将其整合到胶凝基质中。结果突出了控制胶囊尺寸的关键参数,设备的通用性,以及生产的胶囊质量的一致性。希望这种胶囊的规模化生产将有助于开发基于胶囊的自密封胶凝系统的商业可行性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigation of Membrane Emulsification for the Scaled Production of Microcapsules for Self-sealing Cementitious Systems
Capsule-based self-sealing in cementitious systems is an advantageous methodology which has the potential to decrease water ingress and thus enhance a system’s durability and extend its lifespan. If capsule-based self-sealing is to be considered as an industrial solution, production must be scaled while capsule quality and batch reproducibility are maintained. In this study, polyurethane-shelled microcapsules containing a commercially available water repellent agent were produced using membrane emulsification equipment, supplied by Micropore Technologies, followed by interfacial polymerisation. Production was scaled across three different cross-flow membrane emulsification devices, the AXF-1, the AXF-3, and the AXF-4, increasing production output to a maximum of 850 L/hr of capsule suspension. Following production, capsules were characterised, measuring average size and size distribution, as well as integrated into a cementitious matrix. The results highlight the key parameters that govern capsule size, the versatility of the equipment, and the consistent quality of capsules produced. It is hoped that this scaled production of capsules will help to develop the commercial viability of capsule-based self-sealing cementitious systems.
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来源期刊
自引率
0.00%
发文量
342
审稿时长
6 weeks
期刊介绍: MATEC Web of Conferences is an Open Access publication series dedicated to archiving conference proceedings dealing with all fundamental and applied research aspects related to Materials science, Engineering and Chemistry. All engineering disciplines are covered by the aims and scope of the journal: civil, naval, mechanical, chemical, and electrical engineering as well as nanotechnology and metrology. The journal concerns also all materials in regard to their physical-chemical characterization, implementation, resistance in their environment… Other subdisciples of chemistry, such as analytical chemistry, petrochemistry, organic chemistry…, and even pharmacology, are also welcome. MATEC Web of Conferences offers a wide range of services from the organization of the submission of conference proceedings to the worldwide dissemination of the conference papers. It provides an efficient archiving solution, ensuring maximum exposure and wide indexing of scientific conference proceedings. Proceedings are published under the scientific responsibility of the conference editors.
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