水泥基自修复微胶囊的制备及其修复效果研究

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发布时间：2020-01-06 00:00:00

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水泥基自修复微胶囊的制备及其修复效果研究

study on preparation of cement-based self-healing microcapsules and its repair effects

2024年第5期

水泥基材料；微胶囊；自修复；力学性能；养护

Cement-based material; Microcapsule; Self-repair; Mechanical property; Curing

2024年第5期

10.19761/j.1000-4637.2024.05.029.05

浙江省建设科研项目（2020K138）；浙江省教育厅科研项目（Y202043252、Y201941554）。

吴承卉，李俊虎*，杨英豪，雷航

金华职业技术学院，浙江金华 321017

吴承卉，李俊虎*，杨英豪，雷航

吴承卉,李俊虎,杨英豪,等.水泥基自修复微胶囊的制备及其修复效果研究[J].混凝土与水泥制品,2024(5):29-33.

WU C H,LI J H,YANG Y H,et al.Study on preparation of cement-based self-healing microcapsules and its repair effects[J].China Concrete and Cement Products,2024(5):29-33.

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摘要：采用原位聚合法制备了以脲醛树脂为囊壁、环氧树脂GCC-135为囊芯的微胶囊，以抗压强度恢复率为指标评价了微胶囊的修复性能，研究了干燥养护、浸水养护（干养、湿养）条件下不同微胶囊掺量（水泥质量的0、1.5%、3.0%、4.5%、6.0%）对砂浆试件的修复效果。结果表明：在干养、湿养条件下，随着微胶囊掺量的增加，试件的抗折强度、抗压强度均降低；在不同微胶囊掺量下，干养试件的抗压强度恢复率为106.60%~124.29%，湿养试件的抗压强度恢复率为98.74%~110.12%，湿养条件下的修复效果明显低于干养条件；随着微胶囊掺量的增加，其修复效果先增加后略微降低，当微胶囊掺量为4.5%时，微胶囊的修复效果最佳。 Abstract: Microcapsules with urea formaldehyde resin as the wall and epoxy resin GCC-135 as the core were prepared by in-situ polymerization method. The self-healing performance of microcapsules was evaluated by using compressive strength recovery rate as an indicator. The repair effect of different microcapsule contents(0, 1.5%, 3.0%, 4.5%, 6.0% of cement mass) on mortar specimens was studied under dry curing and immersion curing (dry curing, wet curing). The results show that under dry and wet curing conditions, as the content of microcapsules increases, the flexural strength and compressive strength of the specimens decrease. Under different microcapsule contents, the compressive strength recovery rate of dry curing specimens is 106.60%~124.29%, and the compressive strength recovery rate of wet curing specimens is 98.74%~110.12%. The repair effect under wet curing conditions is significantly lower than that under dry curing. As the content of microcapsules increases, the repair effect first increases and then slightly decreases. When the content of microcapsules is 4.5%, the repair effect of microcapsules is the best.

英文名 : study on preparation of cement-based self-healing microcapsules and its repair effects

刊期 : 2024年第5期

关键词 : 水泥基材料；微胶囊；自修复；力学性能；养护

Key words : Cement-based material; Microcapsule; Self-repair; Mechanical property; Curing

刊期 : 2024年第5期

DOI : 10.19761/j.1000-4637.2024.05.029.05

文章编号 :

基金项目 : 浙江省建设科研项目（2020K138）；浙江省教育厅科研项目（Y202043252、Y201941554）。

作者 : 吴承卉，李俊虎*，杨英豪，雷航

单位 : 金华职业技术学院，浙江金华 321017

吴承卉，李俊虎*，杨英豪，雷航

吴承卉,李俊虎,杨英豪,等.水泥基自修复微胶囊的制备及其修复效果研究[J].混凝土与水泥制品,2024(5):29-33.

WU C H,LI J H,YANG Y H,et al.Study on preparation of cement-based self-healing microcapsules and its repair effects[J].China Concrete and Cement Products,2024(5):29-33.

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摘要

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结论

参考文献

引用本文

Abstract: Microcapsules with urea formaldehyde resin as the wall and epoxy resin GCC-135 as the core were prepared by in-situ polymerization method. The self-healing performance of microcapsules was evaluated by using compressive strength recovery rate as an indicator. The repair effect of different microcapsule contents(0, 1.5%, 3.0%, 4.5%, 6.0% of cement mass) on mortar specimens was studied under dry curing and immersion curing (dry curing, wet curing). The results show that under dry and wet curing conditions, as the content of microcapsules increases, the flexural strength and compressive strength of the specimens decrease. Under different microcapsule contents, the compressive strength recovery rate of dry curing specimens is 106.60%~124.29%, and the compressive strength recovery rate of wet curing specimens is 98.74%~110.12%. The repair effect under wet curing conditions is significantly lower than that under dry curing. As the content of microcapsules increases, the repair effect first increases and then slightly decreases. When the content of microcapsules is 4.5%, the repair effect of microcapsules is the best.

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水泥基自修复微胶囊的制备及其修复效果研究

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