A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mud-resistant polycarboxylate superplasticizer and preparation method thereof
The invention belongs to the technical field of chemical building admixtures, and particularly relates to a mud-resistant polycarboxylate superplasticizer and a preparation method thereof. The structural general formula of the mud-resistant polycarboxylate superplasticizer is shown as a formula (I) which is described in the specification. In the formula (I), a is in a range of 5-200; b is in a range of 0-50; c in a range of 0-40; R is H or CH3; R' is (CH2)m; m is in a range of 1-10; R'' is H, CH3 or CH2CH3; R'' ' is an unsaturated polyether macromonomer group with opened unsaturated double bonds. The polycarboxylate superplasticizer for concrete has the effects of blocking mud and reducing water, is low in sensitivity to the mud content of aggregate, and can effectively solve the problem of poor water reducing effect of the polycarboxylate superplasticizer in a concrete system with a high mud content. Moreover, the preparation method of the polycarboxylate superplasticizer for the concrete is simple and controllable, production equipment does not need to be modified, and the polycarboxylate superplasticizer is low in industrial production cost, high in practicability and wide in application prospect.
本发明属于化学建筑外加剂技术领域，具体涉及一种阻泥型聚羧酸减水剂及其制备方法。阻泥型聚羧酸减水剂的结构通式如式(I)所示：式中，a＝5～200；b＝0～50；c＝0～40；R为H或CH3；R’为(CH2)m；m＝1～10；R”为H、CH3或CH2CH3；R”’为不饱和双键打开后的不饱和聚醚大单体基团。本发明涉及的混凝土聚羧酸减水剂兼具阻泥和减水效果，对骨料含泥量敏感性低，可有效降低聚羧酸减水剂在含泥量高的混凝土体系中减水效果差的问题。并且，本发明混凝土聚羧酸减水剂的制备方法简单、可控，且无需对生产设备进行改装，产品工业化生产成本低，实用性强，应用前景广泛。
Mud-resistant polycarboxylate superplasticizer and preparation method thereof
The invention belongs to the technical field of chemical building admixtures, and particularly relates to a mud-resistant polycarboxylate superplasticizer and a preparation method thereof. The structural general formula of the mud-resistant polycarboxylate superplasticizer is shown as a formula (I) which is described in the specification. In the formula (I), a is in a range of 5-200; b is in a range of 0-50; c in a range of 0-40; R is H or CH3; R' is (CH2)m; m is in a range of 1-10; R'' is H, CH3 or CH2CH3; R'' ' is an unsaturated polyether macromonomer group with opened unsaturated double bonds. The polycarboxylate superplasticizer for concrete has the effects of blocking mud and reducing water, is low in sensitivity to the mud content of aggregate, and can effectively solve the problem of poor water reducing effect of the polycarboxylate superplasticizer in a concrete system with a high mud content. Moreover, the preparation method of the polycarboxylate superplasticizer for the concrete is simple and controllable, production equipment does not need to be modified, and the polycarboxylate superplasticizer is low in industrial production cost, high in practicability and wide in application prospect.
本发明属于化学建筑外加剂技术领域，具体涉及一种阻泥型聚羧酸减水剂及其制备方法。阻泥型聚羧酸减水剂的结构通式如式(I)所示：式中，a＝5～200；b＝0～50；c＝0～40；R为H或CH3；R’为(CH2)m；m＝1～10；R”为H、CH3或CH2CH3；R”’为不饱和双键打开后的不饱和聚醚大单体基团。本发明涉及的混凝土聚羧酸减水剂兼具阻泥和减水效果，对骨料含泥量敏感性低，可有效降低聚羧酸减水剂在含泥量高的混凝土体系中减水效果差的问题。并且，本发明混凝土聚羧酸减水剂的制备方法简单、可控，且无需对生产设备进行改装，产品工业化生产成本低，实用性强，应用前景广泛。
Mud-resistant polycarboxylate superplasticizer and preparation method thereof
一种阻泥型聚羧酸减水剂及其制备方法
WU CHUANDENG (author) / LIN ZHIQUN (author) / FANG YUNHUI (author) / LI GELI (author) / SHAO YOUZHE (author) / ZHAO HUI (author) / GUAN MENGQIN (author)
2022-02-15
Patent
Electronic Resource
Chinese
Preparation method of polycarboxylate superplasticizer and polycarboxylate superplasticizer
| European Patent Office | 2025
Mud-resistant polycarboxylate superplasticizer and preparation method thereof
| European Patent Office | 2021
Mud-resistant polycarboxylate superplasticizer and preparation method thereof
| European Patent Office | 2024
Mud-resistant polycarboxylate superplasticizer and preparation method thereof
| European Patent Office | 2022