A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Polycarboxylate superplasticizer with nano size and preparation method thereof
The invention belongs to the technical field of preparation of concrete admixtures, and particularly relates to a polycarboxylic acid water reducing agent with a nanometer size and a preparation method thereof. The preparation method comprises the following steps: (1) preparing hydroxyalkyl vinyl-terminated polyoxypropylene polyoxyethylene ether; (2) preparing trimethylolpropane polyoxyethylene polyoxypropylene ether triacrylate; (3) preparing a template agent; and (4) preparing the polycarboxylic acid water reducing agent with nano size, and limiting the specific preparation steps of the template agent and the polycarboxylic acid water reducing agent. According to the method, hydroxyalkyl-terminated vinyl polyoxypropylene polyoxyethylene ether and trimethylolpropane polyoxyethylene polyoxypropylene ether triacrylate can optimize the main chain structure and the particle size of the water reducing agent under the action of a specific template agent, the particle size of the obtained water reducing agent is 60-80 nm, and the dispersion index is 1.01-1.02; meanwhile, the obtained water reducing agent has relatively good comprehensive performance, such as excellent water reducing rate, collapse resistance and workability, and particularly, the collapse resistance is remarkably improved.
本发明属于混凝土外加剂制备技术领域，具体涉及一种具有纳米尺寸的聚羧酸减水剂及其制备方法。该制备方法包括(一)制备羟烷基端乙烯基聚氧丙烯聚氧乙烯醚；(二)制备三羟甲基丙烷聚氧乙烯聚氧丙烯醚三丙烯酸酯；(三)制备模板剂；(四)制备具有纳米尺寸的聚羧酸减水剂，并限定了模板剂和聚羧酸减水剂的具体制备步骤。该方法中羟烷基端乙烯基聚氧丙烯聚氧乙烯醚与三羟甲基丙烷聚氧乙烯聚氧丙烯醚三丙烯酸酯在特定模板剂作用下可优化减水剂的主链结构和粒径尺寸，得到的减水剂的粒径在60‑80nm，分散指数在1.01‑1.02；同时得到的减水剂具有较好的综合性能，如优异的减水率、保塌性、和易性，尤其在保塌性方面性能提升显著。
Polycarboxylate superplasticizer with nano size and preparation method thereof
The invention belongs to the technical field of preparation of concrete admixtures, and particularly relates to a polycarboxylic acid water reducing agent with a nanometer size and a preparation method thereof. The preparation method comprises the following steps: (1) preparing hydroxyalkyl vinyl-terminated polyoxypropylene polyoxyethylene ether; (2) preparing trimethylolpropane polyoxyethylene polyoxypropylene ether triacrylate; (3) preparing a template agent; and (4) preparing the polycarboxylic acid water reducing agent with nano size, and limiting the specific preparation steps of the template agent and the polycarboxylic acid water reducing agent. According to the method, hydroxyalkyl-terminated vinyl polyoxypropylene polyoxyethylene ether and trimethylolpropane polyoxyethylene polyoxypropylene ether triacrylate can optimize the main chain structure and the particle size of the water reducing agent under the action of a specific template agent, the particle size of the obtained water reducing agent is 60-80 nm, and the dispersion index is 1.01-1.02; meanwhile, the obtained water reducing agent has relatively good comprehensive performance, such as excellent water reducing rate, collapse resistance and workability, and particularly, the collapse resistance is remarkably improved.
本发明属于混凝土外加剂制备技术领域，具体涉及一种具有纳米尺寸的聚羧酸减水剂及其制备方法。该制备方法包括(一)制备羟烷基端乙烯基聚氧丙烯聚氧乙烯醚；(二)制备三羟甲基丙烷聚氧乙烯聚氧丙烯醚三丙烯酸酯；(三)制备模板剂；(四)制备具有纳米尺寸的聚羧酸减水剂，并限定了模板剂和聚羧酸减水剂的具体制备步骤。该方法中羟烷基端乙烯基聚氧丙烯聚氧乙烯醚与三羟甲基丙烷聚氧乙烯聚氧丙烯醚三丙烯酸酯在特定模板剂作用下可优化减水剂的主链结构和粒径尺寸，得到的减水剂的粒径在60‑80nm，分散指数在1.01‑1.02；同时得到的减水剂具有较好的综合性能，如优异的减水率、保塌性、和易性，尤其在保塌性方面性能提升显著。
Polycarboxylate superplasticizer with nano size and preparation method thereof
一种具有纳米尺寸的聚羧酸减水剂及其制备方法
HE XINYAO (author) / FANG FUXIAN (author) / LU XIAO (author) / LI YUBO (author)
2022-07-08
Patent
Electronic Resource
Chinese
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