Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Unsaturated branched polyether containing polyaryl, and preparation method and application thereof
The invention provides polyaryl-containing unsaturated branched polyether, which is prepared by the following steps: carrying out epoxy ring-opening reaction on a dihydroxy substituted aromatic compound and unsaturated aryl glycidyl ether to obtain an initiator, and then carrying out epoxy ring-opening reaction on the initiator and an epoxy compound to obtain the polyaryl-containing unsaturated branched polyether. The polyaryl-containing unsaturated branched polyether, an unsaturated phosphoric acid monomer and an unsaturated carboxylic acid monomer are subjected to a free radical copolymerization reaction to prepare the phosphate water reducer. According to the phosphoric acid water reducing agent provided by the invention, in a concrete experiment, due to the fact that large-steric-hindrance polyaryl-containing unsaturated branched polyether has a more stretched spatial conformation in a cement environment, agglomeration among cement particles can be effectively prevented, so that the water reducing agent fully exerts the dispersion characteristic in cement; the lubricating effect and the hydrophilic state of the concrete can be improved, the slump loss resistance of a concrete mixture is improved, and the gradual loss of the concrete is reduced.
本发明提供了一种含多芳基的不饱和支化聚醚，该含多芳基的不饱和支化聚醚是由双羟基取代芳香化合物和不饱和芳基缩水甘油醚发生环氧开环反应得到起始剂，之后起始剂与环氧化合物发生环氧开环反应获得。该含多芳基的不饱和支化聚醚与不饱和磷酸单体、不饱和羧酸单体通过自由基共聚反应制备磷酸基减水剂。本发明提供的磷酸减水剂在混凝土实验中由于大位阻的含多芳基的不饱和支化聚醚在水泥环境中具有更舒展的空间构象，可以有效阻止水泥颗粒之间的团聚，使得减水剂在水泥中充分发挥分散特性，能改善混凝土的润滑效果和亲水状态，提高混凝土拌合物的保坍性，减少混凝土的经时损失。
Unsaturated branched polyether containing polyaryl, and preparation method and application thereof
The invention provides polyaryl-containing unsaturated branched polyether, which is prepared by the following steps: carrying out epoxy ring-opening reaction on a dihydroxy substituted aromatic compound and unsaturated aryl glycidyl ether to obtain an initiator, and then carrying out epoxy ring-opening reaction on the initiator and an epoxy compound to obtain the polyaryl-containing unsaturated branched polyether. The polyaryl-containing unsaturated branched polyether, an unsaturated phosphoric acid monomer and an unsaturated carboxylic acid monomer are subjected to a free radical copolymerization reaction to prepare the phosphate water reducer. According to the phosphoric acid water reducing agent provided by the invention, in a concrete experiment, due to the fact that large-steric-hindrance polyaryl-containing unsaturated branched polyether has a more stretched spatial conformation in a cement environment, agglomeration among cement particles can be effectively prevented, so that the water reducing agent fully exerts the dispersion characteristic in cement; the lubricating effect and the hydrophilic state of the concrete can be improved, the slump loss resistance of a concrete mixture is improved, and the gradual loss of the concrete is reduced.
本发明提供了一种含多芳基的不饱和支化聚醚，该含多芳基的不饱和支化聚醚是由双羟基取代芳香化合物和不饱和芳基缩水甘油醚发生环氧开环反应得到起始剂，之后起始剂与环氧化合物发生环氧开环反应获得。该含多芳基的不饱和支化聚醚与不饱和磷酸单体、不饱和羧酸单体通过自由基共聚反应制备磷酸基减水剂。本发明提供的磷酸减水剂在混凝土实验中由于大位阻的含多芳基的不饱和支化聚醚在水泥环境中具有更舒展的空间构象，可以有效阻止水泥颗粒之间的团聚，使得减水剂在水泥中充分发挥分散特性，能改善混凝土的润滑效果和亲水状态，提高混凝土拌合物的保坍性，减少混凝土的经时损失。
Unsaturated branched polyether containing polyaryl, and preparation method and application thereof
一种含多芳基的不饱和支化聚醚、制备方法及其应用
RAN QIANPING (Autor:in) / XIA ZHENGYI (Autor:in) / WANG TAO (Autor:in) / HUANG ZHEN (Autor:in) / HAN ZHENG (Autor:in) / WANG BING (Autor:in) / ZHANG JIANGANG (Autor:in) / LU JIAYUE (Autor:in)
30.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
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
/
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
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