Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mineral admixture adaptive polycarboxylate superplasticizer and preparation method thereof
The invention discloses a mineral admixture adaptive polycarboxylate superplasticizer which comprises an unsaturated polyether macromonomer, an unsaturated carboxylic acid monomer, an alkyne ester monomer, an oxidizing agent, a reducing agent and a chain transfer agent, the molar ratio of the unsaturated polyether macromonomer to the unsaturated carboxylic acid monomer to the alkyne ester monomer is 1: (1-3): (0.1-2), the dosage of the oxidant is 0.1%-1.5% of the total mass of the unsaturated polyether macromonomer, the dosage of the reducing agent is 0.1%-2.0% of the total mass of the unsaturated polyether macromonomer, and the dosage of the chain transfer agent is 0.1%-1.2% of the total mass of the unsaturated polyether macromonomer. The invention also discloses a preparation method of the mineral admixture adaptive polycarboxylate superplasticizer. According to the mineral admixture adaptive polycarboxylate superplasticizer, the characteristics of admixture reduction and strength improvement are utilized, and the defects that in low-grade silica fume concrete, the workability is poor, strength improvement is not obvious, and the admixture dosage is high can be effectively overcome.
本发明公开了一种矿物掺合料适应型聚羧酸减水剂，包括不饱和聚醚大单体、不饱和羧酸单体、炔类酯单体、氧化剂、还原剂以及链转移剂；不饱和聚醚大单体、不饱和羧酸单体以及炔类酯单体的摩尔比为1:1‑3:0.1‑2，氧化剂的用量为不饱和聚醚大单体总质量的0.1％‑1.5％，还原剂的用量为不饱和聚醚大单体总质量的0.1％‑2.0％，链转移剂的用量为不饱和聚醚大单体总质量的0.1％‑1.2％。本发明还公开了一种矿物掺合料适应型聚羧酸减水剂的制备方法。本发明的矿物掺合料适应型聚羧酸减水剂利用其降掺、提高强度的特点，能有效改善在低品位硅灰混凝土中和易性差、强度提升不明显和外加剂掺量高等缺点。
Mineral admixture adaptive polycarboxylate superplasticizer and preparation method thereof
The invention discloses a mineral admixture adaptive polycarboxylate superplasticizer which comprises an unsaturated polyether macromonomer, an unsaturated carboxylic acid monomer, an alkyne ester monomer, an oxidizing agent, a reducing agent and a chain transfer agent, the molar ratio of the unsaturated polyether macromonomer to the unsaturated carboxylic acid monomer to the alkyne ester monomer is 1: (1-3): (0.1-2), the dosage of the oxidant is 0.1%-1.5% of the total mass of the unsaturated polyether macromonomer, the dosage of the reducing agent is 0.1%-2.0% of the total mass of the unsaturated polyether macromonomer, and the dosage of the chain transfer agent is 0.1%-1.2% of the total mass of the unsaturated polyether macromonomer. The invention also discloses a preparation method of the mineral admixture adaptive polycarboxylate superplasticizer. According to the mineral admixture adaptive polycarboxylate superplasticizer, the characteristics of admixture reduction and strength improvement are utilized, and the defects that in low-grade silica fume concrete, the workability is poor, strength improvement is not obvious, and the admixture dosage is high can be effectively overcome.
本发明公开了一种矿物掺合料适应型聚羧酸减水剂，包括不饱和聚醚大单体、不饱和羧酸单体、炔类酯单体、氧化剂、还原剂以及链转移剂；不饱和聚醚大单体、不饱和羧酸单体以及炔类酯单体的摩尔比为1:1‑3:0.1‑2，氧化剂的用量为不饱和聚醚大单体总质量的0.1％‑1.5％，还原剂的用量为不饱和聚醚大单体总质量的0.1％‑2.0％，链转移剂的用量为不饱和聚醚大单体总质量的0.1％‑1.2％。本发明还公开了一种矿物掺合料适应型聚羧酸减水剂的制备方法。本发明的矿物掺合料适应型聚羧酸减水剂利用其降掺、提高强度的特点，能有效改善在低品位硅灰混凝土中和易性差、强度提升不明显和外加剂掺量高等缺点。
Mineral admixture adaptive polycarboxylate superplasticizer and preparation method thereof
一种矿物掺合料适应型聚羧酸减水剂及其制备方法
CHEN JING (Autor:in) / SHANG JIAQI (Autor:in) / WANG JUN (Autor:in) / BI YAO (Autor:in) / WANG SHAOFENG (Autor:in) / LIU QIBIN (Autor:in) / HU TENG (Autor:in) / YE HAIYAN (Autor:in) / SHAN HAILIN (Autor:in) / DONG RUI (Autor:in)
03.01.2023
Patent
Elektronische Ressource
Chinesisch
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