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Comb-type topological structure polycarboxylate superplasticizer
The chemical formula of the polycarboxylate superplasticizer is R-[O-C (O)-C (R1) = CH-C (O)-O-C (R2) = CH-C (O)-] n-O-C (O)-R3, R is a polymer main chain, R1 and R2 are non-hydrogen functional groups, R3 is an organic or inorganic functional group, and n is the degree of polymerization; the preparation method comprises the following steps: carrying out a prepolymerization reaction in an inert atmosphere, adding a proper amount of a cross-linking agent to form a comb-shaped topological structure, carrying out a further polymerization reaction, and finally purifying and drying to obtain the product. The water reducer can be used in concrete or cement-based materials, can significantly improve the fluidity and pumpability under a low mixing amount, and reduces the water-cement ratio and the cement consumption, thereby improving the strength and durability of the concrete or cement-based materials.
本发明公开了一种梳型拓扑结构聚羧酸减水剂，该减水剂的化学式为R‑[O‑C(O)‑C(R1)＝CH‑C(O)‑O‑C(R2)＝CH‑C(O)‑]n‑O‑C(O)‑R3，其中R为聚合物主链，R1和R2为非氢基官能团，R3为有机或无机官能团，n为聚合度；制备方法包括在惰性气氛下进行预聚合反应、添加适量的交联剂形成梳型拓扑结构、进行进一步的聚合反应，最终纯化和干燥得到产品。该减水剂可用于混凝土或水泥基材料中，能够在低掺量下显著提高流动性和可泵性，同时减少水灰比和水泥用量，从而提高混凝土或水泥基材料的强度和耐久性。
Comb-type topological structure polycarboxylate superplasticizer
The chemical formula of the polycarboxylate superplasticizer is R-[O-C (O)-C (R1) = CH-C (O)-O-C (R2) = CH-C (O)-] n-O-C (O)-R3, R is a polymer main chain, R1 and R2 are non-hydrogen functional groups, R3 is an organic or inorganic functional group, and n is the degree of polymerization; the preparation method comprises the following steps: carrying out a prepolymerization reaction in an inert atmosphere, adding a proper amount of a cross-linking agent to form a comb-shaped topological structure, carrying out a further polymerization reaction, and finally purifying and drying to obtain the product. The water reducer can be used in concrete or cement-based materials, can significantly improve the fluidity and pumpability under a low mixing amount, and reduces the water-cement ratio and the cement consumption, thereby improving the strength and durability of the concrete or cement-based materials.
本发明公开了一种梳型拓扑结构聚羧酸减水剂，该减水剂的化学式为R‑[O‑C(O)‑C(R1)＝CH‑C(O)‑O‑C(R2)＝CH‑C(O)‑]n‑O‑C(O)‑R3，其中R为聚合物主链，R1和R2为非氢基官能团，R3为有机或无机官能团，n为聚合度；制备方法包括在惰性气氛下进行预聚合反应、添加适量的交联剂形成梳型拓扑结构、进行进一步的聚合反应，最终纯化和干燥得到产品。该减水剂可用于混凝土或水泥基材料中，能够在低掺量下显著提高流动性和可泵性，同时减少水灰比和水泥用量，从而提高混凝土或水泥基材料的强度和耐久性。
Comb-type topological structure polycarboxylate superplasticizer
一种梳型拓扑结构聚羧酸减水剂
SUN HAIBEI (author) / WANG YIPING (author) / ZENG ZHENFENG (author) / HUANG QING (author) / MENG XIANGRUI (author)
2023-05-30
Patent
Electronic Resource
Chinese
Synthesis and Characterization of Comb-Like Polycarboxylate Superplasticizer
| British Library Conference Proceedings | 2012
| European Patent Office | 2023