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Preparation method of clay anti-sensitivity solid polycarboxylate superplasticizer
The invention discloses a preparation method of a clay anti-sensitivity solid polycarboxylate superplasticizer. The solid polycarboxylate superplasticizer is prepared by subjecting an unsaturated polyoxyethylene ether macromonomer a, an unsaturated carboxylic acid monomer b, an unsaturated alkyl ester monomer c and an unsaturated cationic monomer d according to a molar ratio of 1:(3.5-6.0):(0.5-1.0):(0.1-0.5) to solvent-free bulk polymerization under the action of an organic initiator and a chain transfer agent, and slicing by a condensation slicer. No volatile solvent is used in the production process; the process is simple, the prepared clay anti-sensitivity solid polycarboxylate superplasticizer has the advantages of being high in purity, good in solubility, low in clay sensitivity andthe like, the adverse effect of clay components in high-mud-content sandstone aggregate on the performance of the polycarboxylate superplasticizer is effectively reduced, meanwhile, due to the solid characteristic of the polycarboxylate superplasticizer, the packaging and transportation cost is greatly reduced, and a good application prospect is achieved.
本发明公开了一种黏土抗敏性固体聚羧酸减水剂的制备方法，该固体聚羧酸减水剂由不饱和聚氧乙烯醚大单体a、不饱和羧酸单体b、不饱和烷基酯单体c、不饱和阳离子单体d按摩尔比1:(3.5‑6.0):(0.5‑1.0):(0.1‑0.5)在有机引发剂和链转移剂作用下通过无溶剂本体聚合方法，经冷凝切片机进行切片制得。本发明所述生产过程中不使用任何挥发性溶剂，制备工艺简单，所制备的黏土抗敏性固体聚羧酸减水剂具有纯度高、溶解性好、黏土敏感度低等特点，有效降低了高含泥量砂石骨料中黏土成分对聚羧酸减水剂性能的不良影响，同时其固体特性也极大的节约了包装和运输成本，具有良好的应用前景。
Preparation method of clay anti-sensitivity solid polycarboxylate superplasticizer
The invention discloses a preparation method of a clay anti-sensitivity solid polycarboxylate superplasticizer. The solid polycarboxylate superplasticizer is prepared by subjecting an unsaturated polyoxyethylene ether macromonomer a, an unsaturated carboxylic acid monomer b, an unsaturated alkyl ester monomer c and an unsaturated cationic monomer d according to a molar ratio of 1:(3.5-6.0):(0.5-1.0):(0.1-0.5) to solvent-free bulk polymerization under the action of an organic initiator and a chain transfer agent, and slicing by a condensation slicer. No volatile solvent is used in the production process; the process is simple, the prepared clay anti-sensitivity solid polycarboxylate superplasticizer has the advantages of being high in purity, good in solubility, low in clay sensitivity andthe like, the adverse effect of clay components in high-mud-content sandstone aggregate on the performance of the polycarboxylate superplasticizer is effectively reduced, meanwhile, due to the solid characteristic of the polycarboxylate superplasticizer, the packaging and transportation cost is greatly reduced, and a good application prospect is achieved.
本发明公开了一种黏土抗敏性固体聚羧酸减水剂的制备方法，该固体聚羧酸减水剂由不饱和聚氧乙烯醚大单体a、不饱和羧酸单体b、不饱和烷基酯单体c、不饱和阳离子单体d按摩尔比1:(3.5‑6.0):(0.5‑1.0):(0.1‑0.5)在有机引发剂和链转移剂作用下通过无溶剂本体聚合方法，经冷凝切片机进行切片制得。本发明所述生产过程中不使用任何挥发性溶剂，制备工艺简单，所制备的黏土抗敏性固体聚羧酸减水剂具有纯度高、溶解性好、黏土敏感度低等特点，有效降低了高含泥量砂石骨料中黏土成分对聚羧酸减水剂性能的不良影响，同时其固体特性也极大的节约了包装和运输成本，具有良好的应用前景。
Preparation method of clay anti-sensitivity solid polycarboxylate superplasticizer
一种黏土抗敏性固体聚羧酸减水剂的制备方法
XU ZHONGZHOU (author)
2020-10-23
Patent
Electronic Resource
Chinese
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