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Preparation method and application of rust-resistant polycarboxylate superplasticizer
The invention discloses a preparation method and application of a corrosion-resistant polycarboxylic acid water reducer, and the preparation method comprises the following steps: an imidazoline derivative preparation step: mixing alkyl N-hydroxyethyl imidazoline and allyl chloride, adding the mixture into a reaction kettle, adding sodium hydroxide, and sequentially carrying out substitution and dehydration reactions to obtain an imidazoline derivative; the preparation method comprises the following steps: preparing p-isopropenylphenol polyalkoxy ether: putting p-isopropenylphenol into a high-pressure kettle, heating to a reaction temperature under a high-pressure condition, and then adding ethylene oxide and propylene oxide to obtain the p-isopropenylphenol polyalkoxy ether; the preparation method comprises the following steps: mixing p-isopropenylphenol polyalkoxy ether, an imidazoline derivative and deionized water, adding the mixture into a reaction device, heating and stirring to generate a polyether monomer, then adding acrylic acid and an oxidizing agent, finally sequentially adding a reducing agent, an initiator and a chain transfer agent, and neutralizing to obtain the corrosion-resistant polycarboxylic acid water reducer. The anti-rust polycarboxylic acid water reducer prepared by the method has good anti-rust performance and water reducing performance.
本发明公开了一种阻锈型聚羧酸减水剂的制备方法及其应用，包括咪唑啉衍生物制备步骤：将烷基N‑羟乙基咪唑啉与烯丙基氯混合加入反应釜，并加入氢氧化钠，依次进行取代、脱水反应，得到咪唑啉衍生物；对异丙烯基苯酚聚烷氧基醚制备步骤：取对异丙烯基苯酚到高压釜中，高压条件下，升至反应温度后，加入环氧乙烷和环氧丙烷，得到对异丙烯基苯酚聚烷氧基醚；阻锈型聚羧酸减水剂制备步骤：将对异丙烯基苯酚聚烷氧基醚、咪唑啉衍生物和去离子水混合并加入反应装置，加热并搅拌生成聚醚单体，再加入丙烯酸和氧化剂，最后依次加入还原剂、引发剂、链转移剂，中和得到阻锈型聚羧酸减水剂。本发明制备的阻锈型聚羧酸减水剂具有良好的阻锈性能和减水性能。
Preparation method and application of rust-resistant polycarboxylate superplasticizer
The invention discloses a preparation method and application of a corrosion-resistant polycarboxylic acid water reducer, and the preparation method comprises the following steps: an imidazoline derivative preparation step: mixing alkyl N-hydroxyethyl imidazoline and allyl chloride, adding the mixture into a reaction kettle, adding sodium hydroxide, and sequentially carrying out substitution and dehydration reactions to obtain an imidazoline derivative; the preparation method comprises the following steps: preparing p-isopropenylphenol polyalkoxy ether: putting p-isopropenylphenol into a high-pressure kettle, heating to a reaction temperature under a high-pressure condition, and then adding ethylene oxide and propylene oxide to obtain the p-isopropenylphenol polyalkoxy ether; the preparation method comprises the following steps: mixing p-isopropenylphenol polyalkoxy ether, an imidazoline derivative and deionized water, adding the mixture into a reaction device, heating and stirring to generate a polyether monomer, then adding acrylic acid and an oxidizing agent, finally sequentially adding a reducing agent, an initiator and a chain transfer agent, and neutralizing to obtain the corrosion-resistant polycarboxylic acid water reducer. The anti-rust polycarboxylic acid water reducer prepared by the method has good anti-rust performance and water reducing performance.
本发明公开了一种阻锈型聚羧酸减水剂的制备方法及其应用，包括咪唑啉衍生物制备步骤：将烷基N‑羟乙基咪唑啉与烯丙基氯混合加入反应釜，并加入氢氧化钠，依次进行取代、脱水反应，得到咪唑啉衍生物；对异丙烯基苯酚聚烷氧基醚制备步骤：取对异丙烯基苯酚到高压釜中，高压条件下，升至反应温度后，加入环氧乙烷和环氧丙烷，得到对异丙烯基苯酚聚烷氧基醚；阻锈型聚羧酸减水剂制备步骤：将对异丙烯基苯酚聚烷氧基醚、咪唑啉衍生物和去离子水混合并加入反应装置，加热并搅拌生成聚醚单体，再加入丙烯酸和氧化剂，最后依次加入还原剂、引发剂、链转移剂，中和得到阻锈型聚羧酸减水剂。本发明制备的阻锈型聚羧酸减水剂具有良好的阻锈性能和减水性能。
Preparation method and application of rust-resistant polycarboxylate superplasticizer
一种阻锈型聚羧酸减水剂的制备方法及其应用
YANG ZHENSHENG (author) / WANG YARU (author) / CHEN LONG (author) / ZHANG XIAOJUAN (author) / PAN YUYU (author) / WANG NING (author) / ZOU MINGXU (author) / LI ZHUANGZHUANG (author) / SHI NANA (author)
2023-08-08
Patent
Electronic Resource
Chinese
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