A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Coagulating early strength agent for sprayed concrete and preparation method thereof
The preparation method comprises the following steps: taking an early strength agent prepared from a silicon phase and a calcium phase and a urea-based dispersant as an inner-phase oil phase, mixing water and a polycarboxylic acid water reducer as an outer-phase water phase, fully reacting, and performing centrifugal separation to obtain the coagulation-accelerating early strength agent for sprayed concrete, the preparation method specifically comprises the following steps: (1) preparing the ureido hyperdispersant through a free radical copolymerization reaction; and (2) preparing the micro-fluidic chip through etching. And (3) respectively pumping the water phase and the oil phase into the chip, and centrifuging to obtain the coagulation-accelerating early strength agent. According to the invention, a microfluidic technology is adopted, the preparation conditions are mild, the production cost can be reduced, and the production is stable.
本发明公开了一种喷射混凝土用促凝早强剂及其制备方法，将硅相与钙相制备的早强剂与脲基分散剂作为內相油相，水与聚羧酸减水剂混合作为外相水相，充分反应后经离心分离得到喷射混凝土用促凝早强剂；制备方法具体为（1）通过自由基共聚反应制备脲基超分散剂。（2）通过刻蚀制备微流控芯片。（3）将水相与油相分别泵入芯片，经离心后制得促凝早强剂。本发明其采用微流控技术，其制备条件温和，可降低生产成本并稳定生产。
Coagulating early strength agent for sprayed concrete and preparation method thereof
The preparation method comprises the following steps: taking an early strength agent prepared from a silicon phase and a calcium phase and a urea-based dispersant as an inner-phase oil phase, mixing water and a polycarboxylic acid water reducer as an outer-phase water phase, fully reacting, and performing centrifugal separation to obtain the coagulation-accelerating early strength agent for sprayed concrete, the preparation method specifically comprises the following steps: (1) preparing the ureido hyperdispersant through a free radical copolymerization reaction; and (2) preparing the micro-fluidic chip through etching. And (3) respectively pumping the water phase and the oil phase into the chip, and centrifuging to obtain the coagulation-accelerating early strength agent. According to the invention, a microfluidic technology is adopted, the preparation conditions are mild, the production cost can be reduced, and the production is stable.
本发明公开了一种喷射混凝土用促凝早强剂及其制备方法，将硅相与钙相制备的早强剂与脲基分散剂作为內相油相，水与聚羧酸减水剂混合作为外相水相，充分反应后经离心分离得到喷射混凝土用促凝早强剂；制备方法具体为（1）通过自由基共聚反应制备脲基超分散剂。（2）通过刻蚀制备微流控芯片。（3）将水相与油相分别泵入芯片，经离心后制得促凝早强剂。本发明其采用微流控技术，其制备条件温和，可降低生产成本并稳定生产。
Coagulating early strength agent for sprayed concrete and preparation method thereof
一种喷射混凝土用促凝早强剂及其制备方法
QIAN CHENG (author) / LI SHUAI (author) / WANG XUECHUAN (author) / LU TONG (author) / YU PENGCHENG (author) / QU HAOJIE (author) / ZHENG XIUBAO (author) / ZHENG CHUNYANG (author)
2024-05-14
Patent
Electronic Resource
Chinese
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