Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of viscosity reduction type solid polycarboxylate superplasticizer
The invention discloses a preparation method of a viscosity-reducing type solid polycarboxylic acid water reducer, which comprises the following steps: respectively carrying out addition reaction on low-molecular-weight polyethylene glycol monomethyl ether and diisocyanate compounds and carrying out addition reaction on high-molecular-weight polyethylene glycol monomethyl ether and diisocyanate compounds to obtain the viscosity-reducing type solid polycarboxylic acid water reducer. And respectively polymerizing the obtained products with acrylic acid and a hydroxyl-containing unsaturated monomer to obtain the product. The molecular weight of the small molecular weight polyethylene glycol monomethyl ether is 600-2000, and the molecular weight of the large molecular weight polyethylene glycol monomethyl ether is 2000-6000. Compared with a traditional method, the synthesis method has the advantages that raw materials needed by reaction are common and easy to obtain, the whole synthesis process is simple, controllable, efficient and convenient, all the steps used by the reaction are common operation processes, special operation or expensive auxiliaries are not needed, reaction conditions are mild, the process is green and environmentally friendly, and therefore industrial production is easy to achieve; the synthesis process has no special requirements on equipment, has the advantages of strong molecule designability, controllable molecular weight, good performance and the like, and has good popularization potential and application value.
本发明公开了一种降粘型固体聚羧酸减水剂的制备方法，降粘型固体聚羧酸减水剂由小分子量聚乙二醇单甲醚、大分子量聚乙二醇单甲醚分别与二异氰酸酯类化合物发生加成反应，各所得产物再分别与丙烯酸以及含羟基不饱和单体聚合获得；小分子量聚乙二醇单甲基醚的分子量为600‑2000，所述大分子量聚乙二醇单甲基醚的分子量为2000‑6000。本发明合成方法与传统方法相比，反应所需原料常见易得，整个合成过程简单可控、高效便捷，反应所用步骤也均为普通操作工艺，无需特殊操作或昂贵助剂，反应条件温和，工艺绿色环保，因此易于实现工业化生产；该合成过程对设备无特殊要求，且具有分子可设计能力强、分子量可控、性能好等优点，具有很好的推广潜力和应用价值。
Preparation method of viscosity reduction type solid polycarboxylate superplasticizer
The invention discloses a preparation method of a viscosity-reducing type solid polycarboxylic acid water reducer, which comprises the following steps: respectively carrying out addition reaction on low-molecular-weight polyethylene glycol monomethyl ether and diisocyanate compounds and carrying out addition reaction on high-molecular-weight polyethylene glycol monomethyl ether and diisocyanate compounds to obtain the viscosity-reducing type solid polycarboxylic acid water reducer. And respectively polymerizing the obtained products with acrylic acid and a hydroxyl-containing unsaturated monomer to obtain the product. The molecular weight of the small molecular weight polyethylene glycol monomethyl ether is 600-2000, and the molecular weight of the large molecular weight polyethylene glycol monomethyl ether is 2000-6000. Compared with a traditional method, the synthesis method has the advantages that raw materials needed by reaction are common and easy to obtain, the whole synthesis process is simple, controllable, efficient and convenient, all the steps used by the reaction are common operation processes, special operation or expensive auxiliaries are not needed, reaction conditions are mild, the process is green and environmentally friendly, and therefore industrial production is easy to achieve; the synthesis process has no special requirements on equipment, has the advantages of strong molecule designability, controllable molecular weight, good performance and the like, and has good popularization potential and application value.
本发明公开了一种降粘型固体聚羧酸减水剂的制备方法，降粘型固体聚羧酸减水剂由小分子量聚乙二醇单甲醚、大分子量聚乙二醇单甲醚分别与二异氰酸酯类化合物发生加成反应，各所得产物再分别与丙烯酸以及含羟基不饱和单体聚合获得；小分子量聚乙二醇单甲基醚的分子量为600‑2000，所述大分子量聚乙二醇单甲基醚的分子量为2000‑6000。本发明合成方法与传统方法相比，反应所需原料常见易得，整个合成过程简单可控、高效便捷，反应所用步骤也均为普通操作工艺，无需特殊操作或昂贵助剂，反应条件温和，工艺绿色环保，因此易于实现工业化生产；该合成过程对设备无特殊要求，且具有分子可设计能力强、分子量可控、性能好等优点，具有很好的推广潜力和应用价值。
Preparation method of viscosity reduction type solid polycarboxylate superplasticizer
一种降粘型固体聚羧酸减水剂的制备方法
WANG ZHENGZHENG (Autor:in) / RAN QIANPING (Autor:in) / CHEN LEI (Autor:in) / HU CONG (Autor:in) / LI SHENTONG (Autor:in) / LIU JINZHI (Autor:in) / ZHANG JIANGANG (Autor:in) / HUANG ZHEN (Autor:in) / GUO FEI (Autor:in)
15.11.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
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