A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Slow-release water reducing agent and preparation method thereof
The invention relates to a slow-release water reducing agent and a preparation method thereof. The slow-release water reducing agent is prepared from the following raw materials in parts by weight: 2600-3300 parts of unsaturated polyether; 6-10 parts of an initiator; 290-320 parts of a liquid A; 520-550 parts of a solution B; 390-420 parts of a solution C; 900-930 parts of water; the liquid A comprises a reducing agent, a chain transfer agent and water; the liquid B comprises hydroxypropyl acrylate and water; the solution C comprises a functional monomer B-1, a functional monomer B-2, at least one of acrylic acid and methacrylic acid, and water. The slow-release water reducing agent keeps low mixing amount and high slump loss resistance, and solves the problems that concrete cannot be conveyed remotely and is difficult to pump due to the fact that an existing polycarboxylic acid water reducing agent is high in release speed and large in loss.
本发明涉及一种缓释型减水剂及其制备方法。以重量份数计，所述缓释型减水剂制备原料以重量份数计，包括2600‑3300份不饱和聚醚；6‑10份引发剂；290‑320份A液；520‑550份B液；390‑420份C液；900‑930份水；所述A液包括还原剂、链转移剂和水；所述B液包括丙烯酸羟丙酯和水；所述C液包括功能单体B‑1，功能单体B‑2、丙烯酸和甲基丙烯酸中的至少一种和水。所述缓释型减水剂在保持低掺量高保坍的同时，解决了现有聚羧酸减水剂释放速度较快、损失较大所导致的混凝土无法远距离输送、泵送困难等问题。
Slow-release water reducing agent and preparation method thereof
The invention relates to a slow-release water reducing agent and a preparation method thereof. The slow-release water reducing agent is prepared from the following raw materials in parts by weight: 2600-3300 parts of unsaturated polyether; 6-10 parts of an initiator; 290-320 parts of a liquid A; 520-550 parts of a solution B; 390-420 parts of a solution C; 900-930 parts of water; the liquid A comprises a reducing agent, a chain transfer agent and water; the liquid B comprises hydroxypropyl acrylate and water; the solution C comprises a functional monomer B-1, a functional monomer B-2, at least one of acrylic acid and methacrylic acid, and water. The slow-release water reducing agent keeps low mixing amount and high slump loss resistance, and solves the problems that concrete cannot be conveyed remotely and is difficult to pump due to the fact that an existing polycarboxylic acid water reducing agent is high in release speed and large in loss.
本发明涉及一种缓释型减水剂及其制备方法。以重量份数计，所述缓释型减水剂制备原料以重量份数计，包括2600‑3300份不饱和聚醚；6‑10份引发剂；290‑320份A液；520‑550份B液；390‑420份C液；900‑930份水；所述A液包括还原剂、链转移剂和水；所述B液包括丙烯酸羟丙酯和水；所述C液包括功能单体B‑1，功能单体B‑2、丙烯酸和甲基丙烯酸中的至少一种和水。所述缓释型减水剂在保持低掺量高保坍的同时，解决了现有聚羧酸减水剂释放速度较快、损失较大所导致的混凝土无法远距离输送、泵送困难等问题。
Slow-release water reducing agent and preparation method thereof
一种缓释型减水剂及其制备方法
XIONG QIUMIN (author) / XU MEIZHOU (author) / CHEN XIAOBIN (author) / QIU NIANLI (author) / LI GELI (author) / HUANG DEDONG (author)
2021-10-26
Patent
Electronic Resource
Chinese
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