Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Starch modified polycarboxylate superplasticizer and preparation method thereof
The invention discloses a starch modified polycarboxylate superplasticizer and a preparation method thereof, and belongs to the technical field of superplasticizer preparation. The starch modified polycarboxylate superplasticizer is specifically prepared from the following components in parts by weight: 1000 to 1350 parts of polyether monomers, 350 to 600 parts of modified starch slurry, 0.2 to 0.5 part of mercaptopropionic acid, 145 to 200 parts of acrylic acid, 0 to 50 parts of maleic anhydride, 0 to 50 parts of hydroxyethyl acrylate, 2 to 3 parts of vitamin C, 8 to 10 parts of an oxidizing agent, 80 to 120 parts of a neutralizing agent and 2600 to 2850 parts of water. Starch slurry and maleic anhydride react through a millstone force chemical reactor, unsaturated groups are efficiently grafted into a starch molecular structure, then modified starch slurry, polyether monomers, acrylic acid and the like are polymerized, and the starch modified polycarboxylate superplasticizer is prepared. The defects of solvent, oxidation, esterification and other methods in the prior art are avoided, and the production cost of the superplasticizer is greatly reduced.
本发明公开了一种淀粉改性聚羧酸减水剂及其制备方法，属于减水剂制备技术领域，具体包括以下重量份的组分：1000‑1350份聚醚类单体、350‑600份改性淀粉浆、0.2‑0.5份巯基丙酸、145‑200份丙烯酸、0‑50份马来酸酐、0‑50份丙烯酸羟乙酯、2‑3份维生素C、8‑10份氧化剂、80‑120份中和剂和2600‑2850份水。本发明通过通过磨盘力化学反应器，将淀粉浆料与顺酐进行反应，高效地将不饱和基团接枝到淀粉分子结构中，然后将改性淀粉浆料、聚醚类单体、丙烯酸等进行聚合，制备得到淀粉改性聚羧酸减水剂，避免了现有方法使用溶剂、氧化、酯化等方法的弊端，大幅降低了减水剂的生产成本。
Starch modified polycarboxylate superplasticizer and preparation method thereof
The invention discloses a starch modified polycarboxylate superplasticizer and a preparation method thereof, and belongs to the technical field of superplasticizer preparation. The starch modified polycarboxylate superplasticizer is specifically prepared from the following components in parts by weight: 1000 to 1350 parts of polyether monomers, 350 to 600 parts of modified starch slurry, 0.2 to 0.5 part of mercaptopropionic acid, 145 to 200 parts of acrylic acid, 0 to 50 parts of maleic anhydride, 0 to 50 parts of hydroxyethyl acrylate, 2 to 3 parts of vitamin C, 8 to 10 parts of an oxidizing agent, 80 to 120 parts of a neutralizing agent and 2600 to 2850 parts of water. Starch slurry and maleic anhydride react through a millstone force chemical reactor, unsaturated groups are efficiently grafted into a starch molecular structure, then modified starch slurry, polyether monomers, acrylic acid and the like are polymerized, and the starch modified polycarboxylate superplasticizer is prepared. The defects of solvent, oxidation, esterification and other methods in the prior art are avoided, and the production cost of the superplasticizer is greatly reduced.
本发明公开了一种淀粉改性聚羧酸减水剂及其制备方法，属于减水剂制备技术领域，具体包括以下重量份的组分：1000‑1350份聚醚类单体、350‑600份改性淀粉浆、0.2‑0.5份巯基丙酸、145‑200份丙烯酸、0‑50份马来酸酐、0‑50份丙烯酸羟乙酯、2‑3份维生素C、8‑10份氧化剂、80‑120份中和剂和2600‑2850份水。本发明通过通过磨盘力化学反应器，将淀粉浆料与顺酐进行反应，高效地将不饱和基团接枝到淀粉分子结构中，然后将改性淀粉浆料、聚醚类单体、丙烯酸等进行聚合，制备得到淀粉改性聚羧酸减水剂，避免了现有方法使用溶剂、氧化、酯化等方法的弊端，大幅降低了减水剂的生产成本。
Starch modified polycarboxylate superplasticizer and preparation method thereof
一种淀粉改性聚羧酸减水剂及其制备方法
TANG WENRUI (Autor:in) / QU HONGLUE (Autor:in) / ZHANG ZHICHENG (Autor:in) / LIAO YU (Autor:in) / CHENG HONGMEI (Autor:in)
08.06.2021
Patent
Elektronische Ressource
Chinesisch
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