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Shrinkage-reducing polycarboxylate superplasticizer and preparation method thereof
The invention relates to the field of polycarboxylate superplasticizers, and particularly discloses a shrinkage-reducing polycarboxylate superplasticizer and a preparation method thereof. The shrinkage-reducing polycarboxylate superplasticizer is prepared from the following components in parts by weight: 10-25 parts of sodium methylallyl sulfonate, 10-20 parts of distilled water, 15-30 parts of an ethylene glycol polymer, 20-40 parts of an acrylic acid compound and 20-40 parts of polyborate. The preparation method comprises the following steps of: S1, mixing sodium methacrylate and distilled water to obtain a mixed solution; and S2, introducing nitrogen into the mixed solution, heating to 70-90 DEG C, simultaneously adding an ethylene glycol polymer, an acrylic acid compound, polyborate and an initiator into the mixed solution, preserving heat at 70-90 DEG C for 2-3 hours, cooling, and adjusting the pH value to obtain the shrinkage-reducing polycarboxylate superplasticizer. According to the present invention, the shrinkage reducing effect of the shrinkage-reducing polycarboxylate superplasticizer can be improved, and the stability of the shrinkage-reducing polycarboxylate superplasticizer can be enhanced.
本申请涉及聚羧酸减水剂的领域，具体公开了一种减缩型聚羧酸减水剂及其制备方法。减缩型聚羧酸减水剂，按重量份计，包括甲基烯丙基磺酸钠10‑25份、蒸馏水10‑20份、乙二醇类聚合物15‑30份、丙烯酸类化合物20‑40份和聚硼酸酯20‑40份；其制备方法为：S1、将甲基丙烯酸钠和蒸馏水混合得到混合液；S2、向混合液中通入氮气并加热至70‑90℃，接着同时向混合液中加入乙二醇类聚合物、丙烯酸类化合物、聚硼酸酯和引发剂，后在70‑90℃下保温2‑3h，后降温、调节pH制得减缩型聚羧酸减水剂。本申请能够提高减缩型聚羧酸减水剂的减缩效果，增强减缩型聚羧酸减水剂的稳定性。
Shrinkage-reducing polycarboxylate superplasticizer and preparation method thereof
The invention relates to the field of polycarboxylate superplasticizers, and particularly discloses a shrinkage-reducing polycarboxylate superplasticizer and a preparation method thereof. The shrinkage-reducing polycarboxylate superplasticizer is prepared from the following components in parts by weight: 10-25 parts of sodium methylallyl sulfonate, 10-20 parts of distilled water, 15-30 parts of an ethylene glycol polymer, 20-40 parts of an acrylic acid compound and 20-40 parts of polyborate. The preparation method comprises the following steps of: S1, mixing sodium methacrylate and distilled water to obtain a mixed solution; and S2, introducing nitrogen into the mixed solution, heating to 70-90 DEG C, simultaneously adding an ethylene glycol polymer, an acrylic acid compound, polyborate and an initiator into the mixed solution, preserving heat at 70-90 DEG C for 2-3 hours, cooling, and adjusting the pH value to obtain the shrinkage-reducing polycarboxylate superplasticizer. According to the present invention, the shrinkage reducing effect of the shrinkage-reducing polycarboxylate superplasticizer can be improved, and the stability of the shrinkage-reducing polycarboxylate superplasticizer can be enhanced.
本申请涉及聚羧酸减水剂的领域，具体公开了一种减缩型聚羧酸减水剂及其制备方法。减缩型聚羧酸减水剂，按重量份计，包括甲基烯丙基磺酸钠10‑25份、蒸馏水10‑20份、乙二醇类聚合物15‑30份、丙烯酸类化合物20‑40份和聚硼酸酯20‑40份；其制备方法为：S1、将甲基丙烯酸钠和蒸馏水混合得到混合液；S2、向混合液中通入氮气并加热至70‑90℃，接着同时向混合液中加入乙二醇类聚合物、丙烯酸类化合物、聚硼酸酯和引发剂，后在70‑90℃下保温2‑3h，后降温、调节pH制得减缩型聚羧酸减水剂。本申请能够提高减缩型聚羧酸减水剂的减缩效果，增强减缩型聚羧酸减水剂的稳定性。
Shrinkage-reducing polycarboxylate superplasticizer and preparation method thereof
一种减缩型聚羧酸减水剂及其制备方法
CHEN FENGQI (author) / REN JIANBO (author) / YANG WENJIE (author) / LUO ZILONG (author) / TIAN JING (author) / CHEN ZHIMING (author) / ZHENG YONGCHAO (author) / TIAN LINGXIANG (author)
2021-07-09
Patent
Electronic Resource
Chinese
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