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A platform for research: civil engineering, architecture and urbanism
Polyalkenyl lactone modified high slump loss resistant polycarboxylic acid water reducer and preparation method thereof
The invention discloses a polyalkenyl lactone modified high slump loss resistant polycarboxylic acid water reducer and a preparation method thereof, and relates to the technical field of concrete admixtures. The water reducer is prepared from the following components in parts by weight: 320 to 400 parts of unsaturated polyether macromonomer, 10 to 20 parts of unsaturated carboxylic acid monomer, 40 to 80 parts of polyalkenyl lactone, 0.5 to 3 parts of three-way catalyst, 0.8 to 3 parts of chain transfer agent, 1.5 to 3 parts of oxidant, 0.5 to 2 parts of reducing agent and 350 to 700 parts of deionized water. The invention also provides a preparation method of the water reducing agent. The problems that in the prior art, the concrete fluidity retention time of a polycarboxylate superplasticizer is insufficient, and the working performance of concrete is greatly reduced by mud-containing gravel are effectively solved.
本发明公开了一种多烯基内酯改性高保坍型聚羧酸减水剂及其制备方法，涉及混凝土外加剂技术领域；该减水剂包括以下重量份组分：不饱和聚醚大单体320‑400份、不饱和羧酸单体10‑20份、多烯基内酯40‑80份、三元催化剂0.5‑3份、链转移剂0.8‑3份、氧化剂1.5‑3份、还原剂0.5‑2份和去离子水350‑700份。本发明还提供了上述减水剂的制备方法。本发明有效解决了现有技术中聚羧酸减水剂的混凝土流动性保持时间不足和含泥砂石对混凝土工作性能大幅度下降等问题。
Polyalkenyl lactone modified high slump loss resistant polycarboxylic acid water reducer and preparation method thereof
The invention discloses a polyalkenyl lactone modified high slump loss resistant polycarboxylic acid water reducer and a preparation method thereof, and relates to the technical field of concrete admixtures. The water reducer is prepared from the following components in parts by weight: 320 to 400 parts of unsaturated polyether macromonomer, 10 to 20 parts of unsaturated carboxylic acid monomer, 40 to 80 parts of polyalkenyl lactone, 0.5 to 3 parts of three-way catalyst, 0.8 to 3 parts of chain transfer agent, 1.5 to 3 parts of oxidant, 0.5 to 2 parts of reducing agent and 350 to 700 parts of deionized water. The invention also provides a preparation method of the water reducing agent. The problems that in the prior art, the concrete fluidity retention time of a polycarboxylate superplasticizer is insufficient, and the working performance of concrete is greatly reduced by mud-containing gravel are effectively solved.
本发明公开了一种多烯基内酯改性高保坍型聚羧酸减水剂及其制备方法，涉及混凝土外加剂技术领域；该减水剂包括以下重量份组分：不饱和聚醚大单体320‑400份、不饱和羧酸单体10‑20份、多烯基内酯40‑80份、三元催化剂0.5‑3份、链转移剂0.8‑3份、氧化剂1.5‑3份、还原剂0.5‑2份和去离子水350‑700份。本发明还提供了上述减水剂的制备方法。本发明有效解决了现有技术中聚羧酸减水剂的混凝土流动性保持时间不足和含泥砂石对混凝土工作性能大幅度下降等问题。
Polyalkenyl lactone modified high slump loss resistant polycarboxylic acid water reducer and preparation method thereof
一种多烯基内酯改性高保坍型聚羧酸减水剂及其制备方法
CHEN JING (author) / YAN SHENGDONG (author) / BI YAO (author) / WANG SHAOFENG (author) / WANG JINWEN (author) / YANG JIYU (author) / LIU WENKANG (author) / SHANG JIAQI (author) / ZHOU HUI (author) / CAI XIN (author)
2024-03-05
Patent
Electronic Resource
Chinese
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