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Polyaluminum sulfate modified accelerator as well as preparation method and application thereof
The invention discloses a polyaluminum sulfate modified accelerator as well as a preparation method and application thereof. The polyaluminum sulfate modified accelerator comprises the following raw materials in parts by weight: 20-60 parts of aluminum sulfate, 1-6 parts of a solid basifier and 30-70 parts of modified polyacrylamide. The preparation process of the modified polyacrylamide comprises the following steps: dissolving 2-(2, 4-dihydroxyphenyl)-2H-benzotriazole in an absolute ethyl alcohol solution, mixing with a Na2CO3 aqueous solution with the mass fraction of 0.1% under the protection of nitrogen, then adding 1, 2, 7, 8-diepoxyoctane, controlling the temperature to be 80 DEG C, and reacting for 7 hours to obtain an intermediate 1; the preparation method comprises the following steps: mixing an intermediate 1 with (1, 3-dimethylbutyl)-N '-phenyl-p-phenylenediamine, carrying out a reaction to obtain an intermediate 2, adding a polyacrylamide solution into the intermediate 2, and carrying out a reaction to obtain modified polyacrylamide. According to the preparation method, the oxidation resistance and ultraviolet resistance of the polyaluminum sulfate modified accelerator are effectively improved, and the service life of the polyaluminum sulfate modified accelerator is prolonged.
本发明公开了一种聚合硫酸铝改性速凝剂及其制备方法与应用，包括以下重量份原料：20‑60份硫酸铝、1‑6份固体碱化剂和30‑70份改性聚丙烯酰胺；改性聚丙烯酰胺的制备工艺包括以下步骤：2‑(2,4‑二羟基苯基)‑2H‑苯并三唑在无水乙醇溶液中溶解后，与质量分数为0.1％的Na2CO3的水溶液在氮气保护下混合，然后加入1,2,7,8‑二环氧辛烷，控温80℃反应7h，得到中间体1；将中间体1与(1,3‑二甲基丁基)‑N’‑苯基对苯二胺混合，反应，得到中间体2；将聚丙烯酰胺溶液，加入中间体2，反应得到改性聚丙烯酰胺，本发明有效改善聚合硫酸铝改性速凝剂抗氧化以及抗紫外的能力，提高其使用寿命。
Polyaluminum sulfate modified accelerator as well as preparation method and application thereof
The invention discloses a polyaluminum sulfate modified accelerator as well as a preparation method and application thereof. The polyaluminum sulfate modified accelerator comprises the following raw materials in parts by weight: 20-60 parts of aluminum sulfate, 1-6 parts of a solid basifier and 30-70 parts of modified polyacrylamide. The preparation process of the modified polyacrylamide comprises the following steps: dissolving 2-(2, 4-dihydroxyphenyl)-2H-benzotriazole in an absolute ethyl alcohol solution, mixing with a Na2CO3 aqueous solution with the mass fraction of 0.1% under the protection of nitrogen, then adding 1, 2, 7, 8-diepoxyoctane, controlling the temperature to be 80 DEG C, and reacting for 7 hours to obtain an intermediate 1; the preparation method comprises the following steps: mixing an intermediate 1 with (1, 3-dimethylbutyl)-N '-phenyl-p-phenylenediamine, carrying out a reaction to obtain an intermediate 2, adding a polyacrylamide solution into the intermediate 2, and carrying out a reaction to obtain modified polyacrylamide. According to the preparation method, the oxidation resistance and ultraviolet resistance of the polyaluminum sulfate modified accelerator are effectively improved, and the service life of the polyaluminum sulfate modified accelerator is prolonged.
本发明公开了一种聚合硫酸铝改性速凝剂及其制备方法与应用，包括以下重量份原料：20‑60份硫酸铝、1‑6份固体碱化剂和30‑70份改性聚丙烯酰胺；改性聚丙烯酰胺的制备工艺包括以下步骤：2‑(2,4‑二羟基苯基)‑2H‑苯并三唑在无水乙醇溶液中溶解后，与质量分数为0.1％的Na2CO3的水溶液在氮气保护下混合，然后加入1,2,7,8‑二环氧辛烷，控温80℃反应7h，得到中间体1；将中间体1与(1,3‑二甲基丁基)‑N’‑苯基对苯二胺混合，反应，得到中间体2；将聚丙烯酰胺溶液，加入中间体2，反应得到改性聚丙烯酰胺，本发明有效改善聚合硫酸铝改性速凝剂抗氧化以及抗紫外的能力，提高其使用寿命。
Polyaluminum sulfate modified accelerator as well as preparation method and application thereof
一种聚合硫酸铝改性速凝剂及其制备方法与应用
HE QINGFENG (author) / HUANG HE (author) / ZHOU YANG (author)
2023-09-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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