Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polycarboxylic acid high-performance water reducing agent modified by sodium gluconate and preparation process of polycarboxylic acid high-performance water reducing agent
The invention relates to the field of concrete, and particularly discloses a sodium gluconate modified polycarboxylic acid high-performance water reducing agent and a preparation process thereof. The modified polycarboxylic acid high-performance water reducing agent is prepared from 350-450 parts of methallyl alcohol polyoxyethylene ether, 65-75 parts of acrylic acid, 1-2 parts of 2-acrylamide-2-methallyl sulfonic acid, 2-5 parts of mercaptoethanol, 2-5 parts of vitamin C, and 80 to 110 parts of sodium gluconate; and the preparation method comprises the following steps: adding the methylallyl alcohol polyoxyethylene ether, the 2-acrylamide-2-methallyl sulfonic acid, a dispersing agent and a tackifier into a reaction kettle, then adding water to dissolve the components, adding the components into hydrogen peroxide after the components are completely dissolved, and uniformly stirring to obtain a pre-mixture; and dropwise adding the acrylic acid into the pre-mixture, and adjusting the pH value to be neutral, so as to obtain the modified polycarboxylic acid high-performance water reducing agent which can be used as an additive of concrete and has the advantage of improving the viscosity of the concrete.
本申请涉及混凝土领域，具体公开了一种用葡钠改性聚羧酸高性能减水剂及其制备工艺，改性聚羧酸高性能减水剂包括甲基烯丙醇聚氧乙烯醚350‑450份，丙烯酸65‑75份，2‑丙烯酰胺‑2‑甲基丙烯磺酸1‑2份，巯基乙醇2‑5份，维生素C 2‑5份，葡萄糖酸钠80‑110份；其制备方法为：将甲基烯丙醇聚氧乙烯醚，2‑丙烯酰胺‑2‑甲基丙烯磺酸，分散剂和增粘剂加入反应釜中，再加入水使其溶解，待完全溶解后加入双氧水中搅拌均匀得到预混合物；向预混合物滴加丙烯酸，调节pH值为中性,制得改性的聚羧酸高性能减水剂，本申请的改性聚羧酸高性能减水剂可用于混凝土的外加剂，其具有提高混凝土粘性的优点。
Polycarboxylic acid high-performance water reducing agent modified by sodium gluconate and preparation process of polycarboxylic acid high-performance water reducing agent
The invention relates to the field of concrete, and particularly discloses a sodium gluconate modified polycarboxylic acid high-performance water reducing agent and a preparation process thereof. The modified polycarboxylic acid high-performance water reducing agent is prepared from 350-450 parts of methallyl alcohol polyoxyethylene ether, 65-75 parts of acrylic acid, 1-2 parts of 2-acrylamide-2-methallyl sulfonic acid, 2-5 parts of mercaptoethanol, 2-5 parts of vitamin C, and 80 to 110 parts of sodium gluconate; and the preparation method comprises the following steps: adding the methylallyl alcohol polyoxyethylene ether, the 2-acrylamide-2-methallyl sulfonic acid, a dispersing agent and a tackifier into a reaction kettle, then adding water to dissolve the components, adding the components into hydrogen peroxide after the components are completely dissolved, and uniformly stirring to obtain a pre-mixture; and dropwise adding the acrylic acid into the pre-mixture, and adjusting the pH value to be neutral, so as to obtain the modified polycarboxylic acid high-performance water reducing agent which can be used as an additive of concrete and has the advantage of improving the viscosity of the concrete.
本申请涉及混凝土领域，具体公开了一种用葡钠改性聚羧酸高性能减水剂及其制备工艺，改性聚羧酸高性能减水剂包括甲基烯丙醇聚氧乙烯醚350‑450份，丙烯酸65‑75份，2‑丙烯酰胺‑2‑甲基丙烯磺酸1‑2份，巯基乙醇2‑5份，维生素C 2‑5份，葡萄糖酸钠80‑110份；其制备方法为：将甲基烯丙醇聚氧乙烯醚，2‑丙烯酰胺‑2‑甲基丙烯磺酸，分散剂和增粘剂加入反应釜中，再加入水使其溶解，待完全溶解后加入双氧水中搅拌均匀得到预混合物；向预混合物滴加丙烯酸，调节pH值为中性,制得改性的聚羧酸高性能减水剂，本申请的改性聚羧酸高性能减水剂可用于混凝土的外加剂，其具有提高混凝土粘性的优点。
Polycarboxylic acid high-performance water reducing agent modified by sodium gluconate and preparation process of polycarboxylic acid high-performance water reducing agent
一种用葡钠改性聚羧酸高性能减水剂及其制备工艺
CHEN DEYU (Autor:in) / HONG SHUIMU (Autor:in) / HONG JIAN (Autor:in) / LI JINGUO (Autor:in)
01.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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