A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Cement admixture and preparation method thereof
The cement admixture comprises a copolymer (A), an unsaturated (poly) alkylene glycol ether monomer (a) and alkenyl-free (poly) ethylene glycol (B), the copolymer (A) comprises a unit I and a unit II, the unit I is an unsaturated (poly) alkylene glycol ether monomer (a), and the unit II is an unsaturated carboxylic acid monomer (b). When the viscosity reduction type polycarboxylate superplasticizer is synthesized, the polyether monomer containing a long carbon chain is added, so that the synthesized polycarboxylate superplasticizer contains a long side chain structure, the steric hindrance of the polycarboxylate superplasticizer is increased, the space stabilization effect of the polycarboxylate superplasticizer is more remarkable, and the polycarboxylate superplasticizer has an obvious viscosity reduction effect; the steric hindrance effect can be better exerted when the composite material acts with sand and gravel materials such as cement, and the composite material is low in cost, low in energy consumption, easy to prepare, free of pollution to the environment, easy to degrade and huge in future market prospect.
本发明的水泥外加剂包括共聚物(A)、不饱和(聚)亚烷基乙二醇醚单体(a)和无烯基的(聚)乙二醇(B)；所述共聚物(A)包括单元I和单元II，所述单元I为不饱和(聚)亚烷基乙二醇醚单体(a)，所述单元II为不饱和羧酸单体(b)。本发明的降粘型聚羧酸减水剂合成时加入了含有较长碳链的聚醚单体，使得合成的聚羧酸减水剂含有较长的侧链结构，增大了其空间位阻使减水剂的空间稳定效应更为显著，具有明显的降粘效果，与水泥等砂石料作用时能更好的发挥其空间位阻效应，且成本低廉、能耗低、易于制备、对环境无污染、易于降解，未来市场前景巨大。
Cement admixture and preparation method thereof
The cement admixture comprises a copolymer (A), an unsaturated (poly) alkylene glycol ether monomer (a) and alkenyl-free (poly) ethylene glycol (B), the copolymer (A) comprises a unit I and a unit II, the unit I is an unsaturated (poly) alkylene glycol ether monomer (a), and the unit II is an unsaturated carboxylic acid monomer (b). When the viscosity reduction type polycarboxylate superplasticizer is synthesized, the polyether monomer containing a long carbon chain is added, so that the synthesized polycarboxylate superplasticizer contains a long side chain structure, the steric hindrance of the polycarboxylate superplasticizer is increased, the space stabilization effect of the polycarboxylate superplasticizer is more remarkable, and the polycarboxylate superplasticizer has an obvious viscosity reduction effect; the steric hindrance effect can be better exerted when the composite material acts with sand and gravel materials such as cement, and the composite material is low in cost, low in energy consumption, easy to prepare, free of pollution to the environment, easy to degrade and huge in future market prospect.
本发明的水泥外加剂包括共聚物(A)、不饱和(聚)亚烷基乙二醇醚单体(a)和无烯基的(聚)乙二醇(B)；所述共聚物(A)包括单元I和单元II，所述单元I为不饱和(聚)亚烷基乙二醇醚单体(a)，所述单元II为不饱和羧酸单体(b)。本发明的降粘型聚羧酸减水剂合成时加入了含有较长碳链的聚醚单体，使得合成的聚羧酸减水剂含有较长的侧链结构，增大了其空间位阻使减水剂的空间稳定效应更为显著，具有明显的降粘效果，与水泥等砂石料作用时能更好的发挥其空间位阻效应，且成本低廉、能耗低、易于制备、对环境无污染、易于降解，未来市场前景巨大。
Cement admixture and preparation method thereof
水泥外加剂及制备方法
ZHU JIANMIN (author) / LIU ZHAOBIN (author) / DONG ZHENPENG (author) / LIU XIAOJIE (author) / HIRATA TSUYOSHI (author)
2023-04-14
Patent
Electronic Resource
Chinese
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