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A platform for research: civil engineering, architecture and urbanism
Capsule type polycarboxylic acid slow-release water reducing agent and preparation method thereof
The invention provides a capsule type polycarboxylic acid type slow-release water reducing agent and a preparation method thereof, the capsule type polycarboxylic acid type slow-release water reducing agent takes a polycarboxylic acid type slow-release water reducing agent as a core material, and is prepared by coating the polycarboxylic acid type slow-release water reducing agent with an ethyl cellulose membrane, the polycarboxylic acid type slow-release water reducing agent is formed by polymerizing ethylene glycol monovinyl polyethylene glycol ether, acrylic acid, hydroxyethyl acrylate and hydroxypropyl acrylate. According to the invention, an ester group is introduced into the structure of the water reducing agent, and the polycarboxylic acid type slow-release water reducing agent is coated with an ethyl cellulose membrane to form a capsule, so that the dual slow-release effect is realized, and the slump retaining performance of the water reducing agent is improved.
本发明提供了一种胶囊型聚羧酸系缓释减水剂及其制备方法，胶囊型聚羧酸系缓释减水剂以聚羧酸系缓释减水剂为芯材，由乙基纤维素膜包覆在所述聚羧酸系缓释减水剂外制成，所述聚羧酸系缓释减水剂由乙二醇单乙烯基聚乙二醇醚、丙烯酸、丙烯酸羟乙酯和丙烯酸羟丙酯聚合而成。本发明通过向减水剂结构中引入酯基基团，并将乙基纤维素膜包覆在聚羧酸系缓释减水剂外形成胶囊，实现“双重缓释”的效果，提升了减水剂的保坍性能。
Capsule type polycarboxylic acid slow-release water reducing agent and preparation method thereof
The invention provides a capsule type polycarboxylic acid type slow-release water reducing agent and a preparation method thereof, the capsule type polycarboxylic acid type slow-release water reducing agent takes a polycarboxylic acid type slow-release water reducing agent as a core material, and is prepared by coating the polycarboxylic acid type slow-release water reducing agent with an ethyl cellulose membrane, the polycarboxylic acid type slow-release water reducing agent is formed by polymerizing ethylene glycol monovinyl polyethylene glycol ether, acrylic acid, hydroxyethyl acrylate and hydroxypropyl acrylate. According to the invention, an ester group is introduced into the structure of the water reducing agent, and the polycarboxylic acid type slow-release water reducing agent is coated with an ethyl cellulose membrane to form a capsule, so that the dual slow-release effect is realized, and the slump retaining performance of the water reducing agent is improved.
本发明提供了一种胶囊型聚羧酸系缓释减水剂及其制备方法，胶囊型聚羧酸系缓释减水剂以聚羧酸系缓释减水剂为芯材，由乙基纤维素膜包覆在所述聚羧酸系缓释减水剂外制成，所述聚羧酸系缓释减水剂由乙二醇单乙烯基聚乙二醇醚、丙烯酸、丙烯酸羟乙酯和丙烯酸羟丙酯聚合而成。本发明通过向减水剂结构中引入酯基基团，并将乙基纤维素膜包覆在聚羧酸系缓释减水剂外形成胶囊，实现“双重缓释”的效果，提升了减水剂的保坍性能。
Capsule type polycarboxylic acid slow-release water reducing agent and preparation method thereof
一种胶囊型聚羧酸系缓释减水剂及其制备方法
TAN HONGBO (author) / ZHU CHAOFENG (author) / JIAN SHOUWEI (author) / LEE SANG-KOOK (author) / HUANG JIAN (author) / LYU YANG (author)
2023-12-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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