Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-water-reducing mud-resistant water reducing agent and preparation method thereof
The invention belongs to the technical field of water reducing agents and preparation thereof, and provides a high-water-reducing mud-resistant water reducing agent and a preparation method thereof. The high-water-reducing mud-resistant water reducing agent is prepared by mixing at least one of a polyether macromonomer, a mud-resistant assistant, water, an oxidizing agent, acrylic acid and hydroxyethyl acrylate, with a chain transfer agent, an initiator and sodium hydroxide. According to the present invention, with the end capping group of the polyether macromonomer in the formula system, the physical size of the tail end of the side chain is substantially increased so as to substantially increase the physical size of the tail end of the side chain of the water reducing agent synthesized and prepared from the polyether macromonomer, such that the water reducing agent is not easily inserted into the layered structure of the clay so as to achieve the mud resistance effect. And then the working performance of the concrete is further ensured. Through cooperation of other formula systems, the high-water-reducing mud-resistant water reducing agent is good in dispersity, high in water reducing rate and high in mud tolerance, and has certain slump loss resistance and early strength performance.
本发明属于本发明涉及减水剂及其制备技术领域，提供了一种高减水耐泥型减水剂及其制备方法，该高减水耐泥型减水剂由聚醚大单体、抗泥助剂、水、氧化剂、丙烯酸和丙烯酸羟乙酯中的至少一种、链转移剂、引发剂和氢氧化钠混合制备而成，本发明的配方体系的聚醚大单体的封端基团，大大的增加了侧链末端的物理尺寸，进而大大增加了由其合成制备的减水剂的侧链末端的物理尺寸，使其不易插入粘土的层状结构中，从而达到耐泥效果。进而保证了混凝土的工作性能。其他配方体系中的配合使得被发明的高减水耐泥型减水剂分散性好，减水率高、泥土容忍度大，并具有一定的保坍性和早强性能。
High-water-reducing mud-resistant water reducing agent and preparation method thereof
The invention belongs to the technical field of water reducing agents and preparation thereof, and provides a high-water-reducing mud-resistant water reducing agent and a preparation method thereof. The high-water-reducing mud-resistant water reducing agent is prepared by mixing at least one of a polyether macromonomer, a mud-resistant assistant, water, an oxidizing agent, acrylic acid and hydroxyethyl acrylate, with a chain transfer agent, an initiator and sodium hydroxide. According to the present invention, with the end capping group of the polyether macromonomer in the formula system, the physical size of the tail end of the side chain is substantially increased so as to substantially increase the physical size of the tail end of the side chain of the water reducing agent synthesized and prepared from the polyether macromonomer, such that the water reducing agent is not easily inserted into the layered structure of the clay so as to achieve the mud resistance effect. And then the working performance of the concrete is further ensured. Through cooperation of other formula systems, the high-water-reducing mud-resistant water reducing agent is good in dispersity, high in water reducing rate and high in mud tolerance, and has certain slump loss resistance and early strength performance.
本发明属于本发明涉及减水剂及其制备技术领域，提供了一种高减水耐泥型减水剂及其制备方法，该高减水耐泥型减水剂由聚醚大单体、抗泥助剂、水、氧化剂、丙烯酸和丙烯酸羟乙酯中的至少一种、链转移剂、引发剂和氢氧化钠混合制备而成，本发明的配方体系的聚醚大单体的封端基团，大大的增加了侧链末端的物理尺寸，进而大大增加了由其合成制备的减水剂的侧链末端的物理尺寸，使其不易插入粘土的层状结构中，从而达到耐泥效果。进而保证了混凝土的工作性能。其他配方体系中的配合使得被发明的高减水耐泥型减水剂分散性好，减水率高、泥土容忍度大，并具有一定的保坍性和早强性能。
High-water-reducing mud-resistant water reducing agent and preparation method thereof
一种高减水耐泥型减水剂及其制备方法
SHAO YUAN (Autor:in) / XU DAIPENG (Autor:in) / CHEN LONGHUA (Autor:in)
23.04.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
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