Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mud-resistant polycarboxylic acid water reducer mother liquor and preparation method thereof
The invention discloses a mud-resistant polycarboxylic acid water reducer mother liquor and a preparation method thereof, and solves the technical problems that: in the prior art, a polycarboxylic acid water reducer has strong sensitivity to the mud content of aggregate, the mixing amount is easy to increase in use, and the workability and strength of the water reducer are influenced. The mother liquor comprises unsaturated acid, unsaturated polyether, unsaturated ester, a chain transfer agent, an oxidizing agent, a reducing agent and a side chain modifier, wherein the side chain modifier is one or more of hydroxyphenyl lignin, beta-cyclodextrin and 2-chloro-5-methylpyridine. The mother liquor is used for being added into concrete, the effects of retarding and water reducing can be effectively achieved, meanwhile, a comb-shaped structure of the polycarboxylic acid water reducer can be prevented from being inserted into layered clay through a modified side chain, and the situation that the mixing amount of the water reducer is increased after the mud content in aggregate is increased is avoided.
本发明公开了一种抗泥型聚羧酸减水剂母液及其制备方法，解决了现有技术中聚羧酸系减水剂对于骨料的含泥量敏感度强，在使用中容易加大掺量，并对减水剂的和易性和强度产生影响的技术问题。它包括不饱和酸、不饱和聚醚、不饱和酯、链转移剂、氧化剂、还原剂和侧链改性剂，所述侧链改性剂为羟苯基木质素、β‑环糊精、2‑氯‑5‑甲基吡啶中的一种或几种。本发明用于混凝土的添加，能够有效达到缓凝和减水的效果，同时改性的侧链能够避免聚羧酸系减水剂的梳型结构插入层状的粘土中，避免当骨料中含泥量上升后造成减水剂掺量的增加。
Mud-resistant polycarboxylic acid water reducer mother liquor and preparation method thereof
The invention discloses a mud-resistant polycarboxylic acid water reducer mother liquor and a preparation method thereof, and solves the technical problems that: in the prior art, a polycarboxylic acid water reducer has strong sensitivity to the mud content of aggregate, the mixing amount is easy to increase in use, and the workability and strength of the water reducer are influenced. The mother liquor comprises unsaturated acid, unsaturated polyether, unsaturated ester, a chain transfer agent, an oxidizing agent, a reducing agent and a side chain modifier, wherein the side chain modifier is one or more of hydroxyphenyl lignin, beta-cyclodextrin and 2-chloro-5-methylpyridine. The mother liquor is used for being added into concrete, the effects of retarding and water reducing can be effectively achieved, meanwhile, a comb-shaped structure of the polycarboxylic acid water reducer can be prevented from being inserted into layered clay through a modified side chain, and the situation that the mixing amount of the water reducer is increased after the mud content in aggregate is increased is avoided.
本发明公开了一种抗泥型聚羧酸减水剂母液及其制备方法，解决了现有技术中聚羧酸系减水剂对于骨料的含泥量敏感度强，在使用中容易加大掺量，并对减水剂的和易性和强度产生影响的技术问题。它包括不饱和酸、不饱和聚醚、不饱和酯、链转移剂、氧化剂、还原剂和侧链改性剂，所述侧链改性剂为羟苯基木质素、β‑环糊精、2‑氯‑5‑甲基吡啶中的一种或几种。本发明用于混凝土的添加，能够有效达到缓凝和减水的效果，同时改性的侧链能够避免聚羧酸系减水剂的梳型结构插入层状的粘土中，避免当骨料中含泥量上升后造成减水剂掺量的增加。
Mud-resistant polycarboxylic acid water reducer mother liquor and preparation method thereof
一种抗泥型聚羧酸减水剂母液及其制备方法
YU JIANHUA (Autor:in) / ZHANG QIUPING (Autor:in) / YANG KAI (Autor:in) / XIAN FANGYAN (Autor:in) / DONG ZHENPENG (Autor:in) / YU XUELONG (Autor:in)
31.12.2021
Patent
Elektronische Ressource
Chinesisch
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