Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-shrinkage polycarboxylic acid and preparation method thereof
The invention discloses a high shrinkage type polycarboxylic acid and a preparation method thereof. The invention discloses the high shrinkage type polycarboxylic acid. The preparation method comprises the following steps: (1) dissolving acrylic acid in water to obtain a component A; (2) mixing vitamin C and mercaptoacetic acid, and dissolving in water to obtain a component B; and (3) heating, stirring and dissolving the organic silicon modified polyurethane side chain macromonomer and polyethylene glycol, adding hydrogen peroxide, stirring, dropwise adding the component B, carrying out a heating reaction, additionally dropwise adding the component A, carrying out a heat preservation reaction after dropwise adding, adding an alkaline solution, and stirring to adjust the pH value to obtain the high-shrinkage polycarboxylic acid. The high-shrinkage polycarboxylic acid is high in adsorbability, good in adaptability to Portland cement and small in shrinkage. The preparation method can be carried out at normal temperature, and is simple in process, low in cost and suitable for industrial production.
一种高减缩型聚羧酸及其制备方法，本发明公开了一种高减缩型聚羧酸。所述制备方法包括以下步骤：（1）将丙烯酸溶于水中，得A组分；（2）将维生素C和巯基乙酸混合溶于水中，得B组分；（3）将有机硅改性聚氨酯侧链大单体和聚乙二醇加热搅拌溶解，加入双氧水后，搅拌，先滴入B组分进行加热反应，再追加滴入A组分，滴加完毕后，保温反应，加入碱性溶液，搅拌调节pH值，得高减缩型聚羧酸。本发明高减缩型聚羧酸吸附性高，与硅酸盐水泥的适应性好，收缩性小。本发明制备方法可在常温下进行，工艺简单，成本低，适宜于工业化生产。
High-shrinkage polycarboxylic acid and preparation method thereof
The invention discloses a high shrinkage type polycarboxylic acid and a preparation method thereof. The invention discloses the high shrinkage type polycarboxylic acid. The preparation method comprises the following steps: (1) dissolving acrylic acid in water to obtain a component A; (2) mixing vitamin C and mercaptoacetic acid, and dissolving in water to obtain a component B; and (3) heating, stirring and dissolving the organic silicon modified polyurethane side chain macromonomer and polyethylene glycol, adding hydrogen peroxide, stirring, dropwise adding the component B, carrying out a heating reaction, additionally dropwise adding the component A, carrying out a heat preservation reaction after dropwise adding, adding an alkaline solution, and stirring to adjust the pH value to obtain the high-shrinkage polycarboxylic acid. The high-shrinkage polycarboxylic acid is high in adsorbability, good in adaptability to Portland cement and small in shrinkage. The preparation method can be carried out at normal temperature, and is simple in process, low in cost and suitable for industrial production.
一种高减缩型聚羧酸及其制备方法，本发明公开了一种高减缩型聚羧酸。所述制备方法包括以下步骤：（1）将丙烯酸溶于水中，得A组分；（2）将维生素C和巯基乙酸混合溶于水中，得B组分；（3）将有机硅改性聚氨酯侧链大单体和聚乙二醇加热搅拌溶解，加入双氧水后，搅拌，先滴入B组分进行加热反应，再追加滴入A组分，滴加完毕后，保温反应，加入碱性溶液，搅拌调节pH值，得高减缩型聚羧酸。本发明高减缩型聚羧酸吸附性高，与硅酸盐水泥的适应性好，收缩性小。本发明制备方法可在常温下进行，工艺简单，成本低，适宜于工业化生产。
High-shrinkage polycarboxylic acid and preparation method thereof
一种高减缩型聚羧酸及其制备方法
XIANG SHUNCHENG (Autor:in) / ZHENG TINGXIANG (Autor:in) / GAO YINGLI (Autor:in) / JIANG ZHEN (Autor:in) / LIU BIN (Autor:in) / ZENG WEI (Autor:in)
20.09.2022
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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