A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Star-shaped high-performance polycarboxylate superplasticizer and preparation method thereof
The invention discloses a star-shaped high-performance polycarboxylic acid water reducing agent and a preparation method thereof, the water reducing agent is the star-shaped high-performance polycarboxylic acid water reducing agent, and the water reducing agent is prepared by changing the dosage of a chain transfer agent and accurately introducing a small monomer maleic anhydride with an adsorption group on a star-shaped initiator arm. Compared with the prior art, the star-shaped high-performance polycarboxylate superplasticizer and the preparation method thereof have the advantages that the problems of intramolecular crosslinking, uncontrollable polymerization process and the like possibly existing in preparation of a star-shaped structure polycarboxylate superplasticizer through traditional free radical polymerization are solved. The preparation method is simple, few in reaction steps, mild in reaction condition, free of harmful waste liquid, environmentally friendly and easy to industrialize.
本发明公开了种星形高性能聚羧酸减水剂及其制备方法，其减水剂一种星形高性能聚羧酸减水剂，所述减水剂通过改变链转移剂的用量，并在星形引发剂臂上精确引入带有吸附基团的小单体马来酸酐制备得到。本发明与现有技术相比的优点在于：本申请提供的一种星形高性能聚羧酸减水剂及其制备方法避免了传统自由基聚合制备星形结构聚羧酸减水剂可能存在的分子内交联、聚合过程不可控等问题。该制备方法简单，反应步骤少，反应条件较温和，无有害废液产生，绿色环保，易于产业化。
Star-shaped high-performance polycarboxylate superplasticizer and preparation method thereof
The invention discloses a star-shaped high-performance polycarboxylic acid water reducing agent and a preparation method thereof, the water reducing agent is the star-shaped high-performance polycarboxylic acid water reducing agent, and the water reducing agent is prepared by changing the dosage of a chain transfer agent and accurately introducing a small monomer maleic anhydride with an adsorption group on a star-shaped initiator arm. Compared with the prior art, the star-shaped high-performance polycarboxylate superplasticizer and the preparation method thereof have the advantages that the problems of intramolecular crosslinking, uncontrollable polymerization process and the like possibly existing in preparation of a star-shaped structure polycarboxylate superplasticizer through traditional free radical polymerization are solved. The preparation method is simple, few in reaction steps, mild in reaction condition, free of harmful waste liquid, environmentally friendly and easy to industrialize.
本发明公开了种星形高性能聚羧酸减水剂及其制备方法，其减水剂一种星形高性能聚羧酸减水剂，所述减水剂通过改变链转移剂的用量，并在星形引发剂臂上精确引入带有吸附基团的小单体马来酸酐制备得到。本发明与现有技术相比的优点在于：本申请提供的一种星形高性能聚羧酸减水剂及其制备方法避免了传统自由基聚合制备星形结构聚羧酸减水剂可能存在的分子内交联、聚合过程不可控等问题。该制备方法简单，反应步骤少，反应条件较温和，无有害废液产生，绿色环保，易于产业化。
Star-shaped high-performance polycarboxylate superplasticizer and preparation method thereof
一种星形高性能聚羧酸减水剂及其制备方法
HUANG LIJUN (author) / SUN HAIBEI (author) / ZENG ZHENFENG (author) / HUANG QING (author) / WANG YIPING (author) / LI DUANLIANG (author)
2023-05-30
Patent
Electronic Resource
Chinese
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