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A platform for research: civil engineering, architecture and urbanism
Water reducing agent with low surface tension and preparation method thereof
The invention belongs to the technical field of polycarboxylate superplasticizers, and provides a low surface tension polycarboxylate superplasticizer and a preparation method thereof, the low surface tension polycarboxylate superplasticizer is prepared from the following raw materials by mass: 400-800 parts of a macromonomer, 800-1100 parts of water, 80-100 parts of unsaturated acid, 3-5 parts of a chain transfer agent, 4-6 parts of a reducing agent, 5-9 parts of an oxidizing agent, 5-85 parts of a terminated fatty alcohol polyoxyethylene ether functional monomer, and 10-15 parts of a neutralizer. The characteristic that fatty alcohol-polyoxyethylene ether is adjustable in structure is utilized, the hydrophilic-lipophilic balance property is changed by changing the EO addition number and the alkyl chain length, fatty alcohol-polyoxyethylene ether is introduced into the structure of the polycarboxylate superplasticizer, the surface tension of a polycarboxylate superplasticizer solution can be reduced through the structure-activity relationship, the drying shrinkage of cement is reduced, and the water-retaining property of the polycarboxylate superplasticizer is improved. The practical significance is realized on improving the durability of the concrete.
本发明属于聚羧酸减水剂技术领域，提供了一种低表面张力聚羧酸减水剂及其制备方法，由包含如下质量份数的原料制备得到：大单体400～800份、水800～1100份、不饱和酸80～100份、链转移剂3～5份、还原剂4～6份、氧化剂5～9份、封端脂肪醇聚氧乙烯醚功能单体5～85份、中和剂10～15份。本发明利用脂肪醇聚氧乙烯醚结构可调的特点，通过改变EO加成数和烷基链长度从而改变亲水亲油平衡属性，引入到聚羧酸减水剂结构中，通过构效关系，可以降低聚羧酸减水剂溶液的表面张力，减少水泥的干燥收缩，对提高混凝土的耐久性有现实意义。
Water reducing agent with low surface tension and preparation method thereof
The invention belongs to the technical field of polycarboxylate superplasticizers, and provides a low surface tension polycarboxylate superplasticizer and a preparation method thereof, the low surface tension polycarboxylate superplasticizer is prepared from the following raw materials by mass: 400-800 parts of a macromonomer, 800-1100 parts of water, 80-100 parts of unsaturated acid, 3-5 parts of a chain transfer agent, 4-6 parts of a reducing agent, 5-9 parts of an oxidizing agent, 5-85 parts of a terminated fatty alcohol polyoxyethylene ether functional monomer, and 10-15 parts of a neutralizer. The characteristic that fatty alcohol-polyoxyethylene ether is adjustable in structure is utilized, the hydrophilic-lipophilic balance property is changed by changing the EO addition number and the alkyl chain length, fatty alcohol-polyoxyethylene ether is introduced into the structure of the polycarboxylate superplasticizer, the surface tension of a polycarboxylate superplasticizer solution can be reduced through the structure-activity relationship, the drying shrinkage of cement is reduced, and the water-retaining property of the polycarboxylate superplasticizer is improved. The practical significance is realized on improving the durability of the concrete.
本发明属于聚羧酸减水剂技术领域，提供了一种低表面张力聚羧酸减水剂及其制备方法，由包含如下质量份数的原料制备得到：大单体400～800份、水800～1100份、不饱和酸80～100份、链转移剂3～5份、还原剂4～6份、氧化剂5～9份、封端脂肪醇聚氧乙烯醚功能单体5～85份、中和剂10～15份。本发明利用脂肪醇聚氧乙烯醚结构可调的特点，通过改变EO加成数和烷基链长度从而改变亲水亲油平衡属性，引入到聚羧酸减水剂结构中，通过构效关系，可以降低聚羧酸减水剂溶液的表面张力，减少水泥的干燥收缩，对提高混凝土的耐久性有现实意义。
Water reducing agent with low surface tension and preparation method thereof
一种低表面张力减水剂及其制备方法
XUE BOWEN (author) / LIU GUANJIE (author) / ZHOU JINGJIE (author) / SUN JINYUAN (author) / LIANG HUIBIN (author) / LIU YUQI (author) / ZHANG KE (author) / WANG CHUNYU (author)
2023-12-12
Patent
Electronic Resource
Chinese
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