Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention belongs to the technical field of functional additives of concrete materials, particularly relates to oxidized lignin polycarboxylate, and further discloses application of the oxidized lignin polycarboxylate to preparation of a high-efficiency water reducing agent. According to the preparation method of the oxidized lignin polycarboxylate, lignin is oxidized and modified under the alkaline condition, and oxidized lignin, carboxylic acid small monomers and alkenyl polyglycol ether are polymerized as monomers, so that the oxidized lignin polycarboxylate which can be used as a high-efficiency water reducing agent is prepared. Compared with a traditional polycarboxylic acid water reducing agent, the oxidized lignin polycarboxylate water reducing agent has the advantages that the lignin-based carboxylic acid monomer is used for completely or partially replacing a traditional carboxylic acid small monomer, so that the cost of the polycarboxylic acid water reducing agent is reduced, the anti-collapse performance of the polycarboxylic acid water reducing agent is also improved, and the oxidized lignin polycarboxylate water reducing agent has remarkable cost benefit and environmental protection benefit.
本发明属于混凝土材料功能性助剂技术领域，具体涉及一种氧化木质素聚羧酸盐，并进一步公开其用于制备高效减水剂的用途。本发明所述氧化木质素聚羧酸盐的制备方法，通过将木质素在碱性条件下氧化改性，以及将氧化木质素与羧酸类小单体、烯基聚乙二醇醚为单体进行聚合的方式，制备得到可作为高效减水剂的氧化木质素聚羧酸盐。本发明所述氧化木质素聚羧酸盐减水剂，相对于传统的聚羧酸类减水剂而言，用木质素基羧酸单体全部或部分替代传统羧酸小单体，在降低聚羧酸减水剂成本的同时也提升了其保塌性能，具有显著的成本效益和环保效益。
The invention belongs to the technical field of functional additives of concrete materials, particularly relates to oxidized lignin polycarboxylate, and further discloses application of the oxidized lignin polycarboxylate to preparation of a high-efficiency water reducing agent. According to the preparation method of the oxidized lignin polycarboxylate, lignin is oxidized and modified under the alkaline condition, and oxidized lignin, carboxylic acid small monomers and alkenyl polyglycol ether are polymerized as monomers, so that the oxidized lignin polycarboxylate which can be used as a high-efficiency water reducing agent is prepared. Compared with a traditional polycarboxylic acid water reducing agent, the oxidized lignin polycarboxylate water reducing agent has the advantages that the lignin-based carboxylic acid monomer is used for completely or partially replacing a traditional carboxylic acid small monomer, so that the cost of the polycarboxylic acid water reducing agent is reduced, the anti-collapse performance of the polycarboxylic acid water reducing agent is also improved, and the oxidized lignin polycarboxylate water reducing agent has remarkable cost benefit and environmental protection benefit.
本发明属于混凝土材料功能性助剂技术领域，具体涉及一种氧化木质素聚羧酸盐，并进一步公开其用于制备高效减水剂的用途。本发明所述氧化木质素聚羧酸盐的制备方法，通过将木质素在碱性条件下氧化改性，以及将氧化木质素与羧酸类小单体、烯基聚乙二醇醚为单体进行聚合的方式，制备得到可作为高效减水剂的氧化木质素聚羧酸盐。本发明所述氧化木质素聚羧酸盐减水剂，相对于传统的聚羧酸类减水剂而言，用木质素基羧酸单体全部或部分替代传统羧酸小单体，在降低聚羧酸减水剂成本的同时也提升了其保塌性能，具有显著的成本效益和环保效益。
Oxidized lignin polycarboxylate, preparation method and application of oxidized lignin polycarboxylate in water reducing agent
一种氧化木质素聚羧酸盐、制备方法及用于减水剂的用途
19.01.2024
Patent
Elektronische Ressource
Chinesisch
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