Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Slow-release slump retaining material and preparation method thereof
The invention relates to a slow-release slump retaining material and a preparation method thereof, and the slow-release slump retaining material is characterized by comprising the following preparation raw materials: 60-100 parts of a first polyether macromonomer; 2-16 parts of unsaturated carboxylic acid (anhydride); 0.5 to 5.0 parts of unsaturated phosphonate; 15 to 35 parts of unsaturated carboxylic ester; 100 parts of a second polyether macromonomer; 1-5 parts of an initiator; 0.5-3.2 parts of a molecular weight regulator; allylamine is selected as an initiator to prepare a first polyether macromonomer, fluorophenoxy alkylene oxide is used for blocking the polyether monomer, and when the prepared first polyether macromonomer participates in a copolymerization reaction, molecules of the first polyether macromonomer are adsorbed on the surface layer of cement particles, so that the thickness of a water film layer between the particles can be increased, and the water-retaining property of concrete is improved; the slurry extraction effect is obvious, the slurry collection rate of the concrete is slowed down, and meanwhile, the slump retaining performance of the concrete is improved.
本发明涉及一种缓释型保坍材料及其制备方法，一种缓释型保坍材料，其特征在于，所述缓释型保坍材料的制备原料包括：第一聚醚大单体60～100份；不饱和羧酸(酐)2～16份；不饱和膦酸酯0.5～5.0份；不饱和羧酸酯15～35份；第二聚醚大单体100份；引发剂1～5份；分子量调节剂0.5～3.2份；本发明选烯丙基胺为起始剂制备第一聚醚大单体，并利用氟苯氧基环氧烷对聚醚单体封端，制得的第一聚醚大单体，参与共聚反应时，第一聚醚大单体分子吸附在水泥颗粒表层，能够增加颗粒间水膜层的厚度，提升混凝土的保水性，提浆效果显著，减缓了混凝土的收浆速率，同时提高了混凝土的保坍性能。
Slow-release slump retaining material and preparation method thereof
The invention relates to a slow-release slump retaining material and a preparation method thereof, and the slow-release slump retaining material is characterized by comprising the following preparation raw materials: 60-100 parts of a first polyether macromonomer; 2-16 parts of unsaturated carboxylic acid (anhydride); 0.5 to 5.0 parts of unsaturated phosphonate; 15 to 35 parts of unsaturated carboxylic ester; 100 parts of a second polyether macromonomer; 1-5 parts of an initiator; 0.5-3.2 parts of a molecular weight regulator; allylamine is selected as an initiator to prepare a first polyether macromonomer, fluorophenoxy alkylene oxide is used for blocking the polyether monomer, and when the prepared first polyether macromonomer participates in a copolymerization reaction, molecules of the first polyether macromonomer are adsorbed on the surface layer of cement particles, so that the thickness of a water film layer between the particles can be increased, and the water-retaining property of concrete is improved; the slurry extraction effect is obvious, the slurry collection rate of the concrete is slowed down, and meanwhile, the slump retaining performance of the concrete is improved.
本发明涉及一种缓释型保坍材料及其制备方法，一种缓释型保坍材料，其特征在于，所述缓释型保坍材料的制备原料包括：第一聚醚大单体60～100份；不饱和羧酸(酐)2～16份；不饱和膦酸酯0.5～5.0份；不饱和羧酸酯15～35份；第二聚醚大单体100份；引发剂1～5份；分子量调节剂0.5～3.2份；本发明选烯丙基胺为起始剂制备第一聚醚大单体，并利用氟苯氧基环氧烷对聚醚单体封端，制得的第一聚醚大单体，参与共聚反应时，第一聚醚大单体分子吸附在水泥颗粒表层，能够增加颗粒间水膜层的厚度，提升混凝土的保水性，提浆效果显著，减缓了混凝土的收浆速率，同时提高了混凝土的保坍性能。
Slow-release slump retaining material and preparation method thereof
一种缓释型保坍材料及其制备方法
LI XIANGHE (Autor:in) / GUAN MENGQIN (Autor:in) / LIN XIAOCHEN (Autor:in) / FANG YUNHUI (Autor:in) / CHEN SHAODONG (Autor:in) / LI QIANG (Autor:in) / DU KELU (Autor:in) / LI DADI (Autor:in) / QIN TINGTING (Autor:in) / KANG XIANG (Autor:in)
22.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
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
/
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
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