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A platform for research: civil engineering, architecture and urbanism
Phosphonate modified polycarboxylate superplasticizer and preparation method thereof
The invention relates to the field of building materials, in particular to a phosphonate modified polycarboxylate superplasticizer and a preparation method thereof. The polycarboxylate superplasticizer is mainly prepared from the following raw materials in parts by weight: 90 to 120 parts of unsaturated polyether macromonomers, 4 to 6 parts of phosphonate monomers, 7 to 10 parts of unsaturated carboxylic acid micromonomers, 0.7 to 1.3 parts of an initiator, 0.1 to 0.5 part of a reducing agent and 0.4 to 0.6 part of a chain transfer agent, wherein the phosphonate monomer is mainly prepared from the following raw materials in parts by weight: 0.1-0.15 part of a catalyst, 3-5 parts of unsaturated anhydride, and 5-7 parts of diphosphonic acid. The polycarboxylic acid water reducer has excellent water reducing performance and slump retaining performance, is high in adaptability and has certain resistance to clay.
本发明涉及建材领域，具体而言，涉及一种膦酸酯改性聚羧酸减水剂及其制备方法。所述的聚羧酸减水剂，主要由以下重量份的原料制成：不饱和聚醚类大单体90～120份、膦酸酯单体4～6份、不饱和羧酸类小单体7～10份、引发剂0.7～1.3份、还原剂0.1～0.5份和链转移剂0.4～0.6份；所述膦酸酯单体主要由以下重量份的原料制成：催化剂0.1～0.15份、不饱和酸酐3～5份和双膦酸5～7份。所述的聚羧酸减水剂具有优异的减水性能和保坍性能，适应性强，对黏土具有一定的抵抗性。
Phosphonate modified polycarboxylate superplasticizer and preparation method thereof
The invention relates to the field of building materials, in particular to a phosphonate modified polycarboxylate superplasticizer and a preparation method thereof. The polycarboxylate superplasticizer is mainly prepared from the following raw materials in parts by weight: 90 to 120 parts of unsaturated polyether macromonomers, 4 to 6 parts of phosphonate monomers, 7 to 10 parts of unsaturated carboxylic acid micromonomers, 0.7 to 1.3 parts of an initiator, 0.1 to 0.5 part of a reducing agent and 0.4 to 0.6 part of a chain transfer agent, wherein the phosphonate monomer is mainly prepared from the following raw materials in parts by weight: 0.1-0.15 part of a catalyst, 3-5 parts of unsaturated anhydride, and 5-7 parts of diphosphonic acid. The polycarboxylic acid water reducer has excellent water reducing performance and slump retaining performance, is high in adaptability and has certain resistance to clay.
本发明涉及建材领域，具体而言，涉及一种膦酸酯改性聚羧酸减水剂及其制备方法。所述的聚羧酸减水剂，主要由以下重量份的原料制成：不饱和聚醚类大单体90～120份、膦酸酯单体4～6份、不饱和羧酸类小单体7～10份、引发剂0.7～1.3份、还原剂0.1～0.5份和链转移剂0.4～0.6份；所述膦酸酯单体主要由以下重量份的原料制成：催化剂0.1～0.15份、不饱和酸酐3～5份和双膦酸5～7份。所述的聚羧酸减水剂具有优异的减水性能和保坍性能，适应性强，对黏土具有一定的抵抗性。
Phosphonate modified polycarboxylate superplasticizer and preparation method thereof
一种膦酸酯改性聚羧酸减水剂及其制备方法
ZENG XUN (author) / DENG NI (author) / CHEN JIE (author) / FANG SHICHANG (author) / TIAN YINGBING (author)
2021-11-26
Patent
Electronic Resource
Chinese
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