A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Concrete structure self-immune self-repairing microcapsule and preparation method
The invention relates to a concrete structure self-immune self-repairing microcapsule and a preparation method. The microcapsule is composed of a capsule wall and a core material in the capsule, the capsule wall is urea resin, and the core material is a mixture of ethyl phenylacetate and epoxy resin. Arabic gum solid, ammonium chloride solid, resorcinol and urea are weighed and dissolved in purified water, and a wall material solution is prepared; a core material solution is prepared from epoxy resin and ethyl phenylacetate; the wall material solution is adjusted to be acidic, the wall material solution is heated, the core material solution is added, stirring is carried out, a formaldehyde solution is added, the rotating speed is then adjusted to be 650 r/h-950 r/h, the temperature is keptat 55-85 DEG C, and stirring for 2-5 h is carried out; and the turbid liquid is cooled, suction filtration is carried out on the turbid liquid, purified water is added for washing, suction filtrationfor 3-4 times is carried out, and the filtrate is dried to obtain the product. The microcapsule prepared by the invention can ensure the service life of concrete to a great extent, effectively improves the corrosion resistance of the concrete, and can self-repair the cracking and shrinkage conditions of the concrete after being used for a certain time, thereby lowering the later maintenance cost.
本发明是一种混凝土结构自免疫自修复微胶囊及制备方法。由囊壁及囊内的芯材构成，囊壁为脲醛树脂，所述芯材为苯乙酸乙酯与环氧树脂混合。称取阿拉伯树胶固体、氯化铵固体、间苯二酚、尿素溶于纯净水中，配成壁材溶液；环氧树脂与苯乙酸乙酯，配成芯材溶液；调节壁材溶液为酸性，加热壁材溶液，将芯材溶液加入，搅拌后，加入甲醛溶液，再调节转速至650r/h～950r/h，保持温度55～85摄氏度，搅拌2～5h；悬浊液冷却，抽滤悬浊液，加纯净水洗涤、抽滤3～4次，烘干滤出物后得到产品。本发明所制得微胶囊，可以极大程度上保证混凝土的寿命，有效的改善混凝土的抗腐蚀性，且使用一定时间后，可以自修复混凝土开裂收缩情况，降低后期维护成本。
Concrete structure self-immune self-repairing microcapsule and preparation method
The invention relates to a concrete structure self-immune self-repairing microcapsule and a preparation method. The microcapsule is composed of a capsule wall and a core material in the capsule, the capsule wall is urea resin, and the core material is a mixture of ethyl phenylacetate and epoxy resin. Arabic gum solid, ammonium chloride solid, resorcinol and urea are weighed and dissolved in purified water, and a wall material solution is prepared; a core material solution is prepared from epoxy resin and ethyl phenylacetate; the wall material solution is adjusted to be acidic, the wall material solution is heated, the core material solution is added, stirring is carried out, a formaldehyde solution is added, the rotating speed is then adjusted to be 650 r/h-950 r/h, the temperature is keptat 55-85 DEG C, and stirring for 2-5 h is carried out; and the turbid liquid is cooled, suction filtration is carried out on the turbid liquid, purified water is added for washing, suction filtrationfor 3-4 times is carried out, and the filtrate is dried to obtain the product. The microcapsule prepared by the invention can ensure the service life of concrete to a great extent, effectively improves the corrosion resistance of the concrete, and can self-repair the cracking and shrinkage conditions of the concrete after being used for a certain time, thereby lowering the later maintenance cost.
本发明是一种混凝土结构自免疫自修复微胶囊及制备方法。由囊壁及囊内的芯材构成，囊壁为脲醛树脂，所述芯材为苯乙酸乙酯与环氧树脂混合。称取阿拉伯树胶固体、氯化铵固体、间苯二酚、尿素溶于纯净水中，配成壁材溶液；环氧树脂与苯乙酸乙酯，配成芯材溶液；调节壁材溶液为酸性，加热壁材溶液，将芯材溶液加入，搅拌后，加入甲醛溶液，再调节转速至650r/h～950r/h，保持温度55～85摄氏度，搅拌2～5h；悬浊液冷却，抽滤悬浊液，加纯净水洗涤、抽滤3～4次，烘干滤出物后得到产品。本发明所制得微胶囊，可以极大程度上保证混凝土的寿命，有效的改善混凝土的抗腐蚀性，且使用一定时间后，可以自修复混凝土开裂收缩情况，降低后期维护成本。
Concrete structure self-immune self-repairing microcapsule and preparation method
一种混凝土结构自免疫自修复微胶囊及制备方法
ZHANG RONGLING (author) / YANG BIN (author) / ZHANG XUEPENG (author) / HUANG TAO (author) / ZHANG JINGWEN (author) / JIANG YIPING (author) / DUAN YAWEI (author) / XIAO PENGZHEN (author) / MA LINA (author) / WANG QICAI (author)
2020-06-19
Patent
Electronic Resource
Chinese
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