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A platform for research: civil engineering, architecture and urbanism
Hyperbranched concrete defoaming agent as well as preparation method and application thereof
The invention discloses a hyperbranched concrete defoaming agent as well as a preparation method and application thereof. A hydrophobic chain segment of the hyperbranched concrete defoaming agent is of a hyperbranched structure with a plurality of long-chain alkyl groups, and the long-chain alkyl groups are connected together through benzene ring units; the hydrophilic chain segment is a polyether chain segment. Compared with a traditional straight chain type defoaming agent, the hyperbranched concrete defoaming agent has the advantages that the melting point is lower, the water solubility is better, and the compatibility with additives is better; compared with a traditional polyether defoaming agent with a linear single-chain structure, the polyether defoaming agent has higher surface activity and higher defoaming efficiency, and can inhibit generation of large bubbles in fresh concrete in a short time and reduce the gas content of the concrete, so that the hardening strength and durability of the concrete are improved.
本发明公开了一种超支化型混凝土消泡剂、其制备方法及应用。本发明所述超支化型混凝土消泡剂其疏水链段为带有多个长链烷基的超支化结构，长链烷基之间通过苯环单元连接在一起的；其亲水链段为聚醚链段。本发明所述超支化型混凝土消泡剂，具有相比于传统的直链型消泡剂更低的熔点以及更好的水溶性，与外加剂的相容性更好；具有相比于传统线形单链结构的聚醚消泡剂更高的表面活性，更高的消泡效率，能在短时间内抑制新拌混凝土中的大气泡生成，降低混凝土的含气量，从而提高混凝土的硬化强度和耐久性。
Hyperbranched concrete defoaming agent as well as preparation method and application thereof
The invention discloses a hyperbranched concrete defoaming agent as well as a preparation method and application thereof. A hydrophobic chain segment of the hyperbranched concrete defoaming agent is of a hyperbranched structure with a plurality of long-chain alkyl groups, and the long-chain alkyl groups are connected together through benzene ring units; the hydrophilic chain segment is a polyether chain segment. Compared with a traditional straight chain type defoaming agent, the hyperbranched concrete defoaming agent has the advantages that the melting point is lower, the water solubility is better, and the compatibility with additives is better; compared with a traditional polyether defoaming agent with a linear single-chain structure, the polyether defoaming agent has higher surface activity and higher defoaming efficiency, and can inhibit generation of large bubbles in fresh concrete in a short time and reduce the gas content of the concrete, so that the hardening strength and durability of the concrete are improved.
本发明公开了一种超支化型混凝土消泡剂、其制备方法及应用。本发明所述超支化型混凝土消泡剂其疏水链段为带有多个长链烷基的超支化结构，长链烷基之间通过苯环单元连接在一起的；其亲水链段为聚醚链段。本发明所述超支化型混凝土消泡剂，具有相比于传统的直链型消泡剂更低的熔点以及更好的水溶性，与外加剂的相容性更好；具有相比于传统线形单链结构的聚醚消泡剂更高的表面活性，更高的消泡效率，能在短时间内抑制新拌混凝土中的大气泡生成，降低混凝土的含气量，从而提高混凝土的硬化强度和耐久性。
Hyperbranched concrete defoaming agent as well as preparation method and application thereof
一种超支化型混凝土消泡剂、其制备方法及应用
QIAO MIN (author) / CHEN JIAN (author) / GAO NANXIAO (author) / WU JINGZHI (author) / SHAN GUANGCHENG (author) / ZHU BOSONG (author) / RAN QIANPING (author) / WANG FANGGANG (author) / ZHAO SHAOPENG (author) / LI XIAN (author)
2022-07-01
Patent
Electronic Resource
Chinese
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