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Preparation method of novel phosphate group-containing melamine-formaldehyde oligomer type migratory steel bar corrosion inhibitor
The invention provides a preparation method of a novel phosphate group-containing melamine-formaldehyde oligomer type migratory steel bar corrosion inhibitor. The preparation method comprises the following steps: firstly, modifying melamine into a melamine monomer containing hydroxymethyl and phosphate groups by utilizing amino groups on melamine; and carrying out intramolecular dehydration on melamine molecules containing hydroxymethyl and phosphate groups to obtain the straight-chain melamine-formaldehyde oligomer type migratory steel bar corrosion inhibitor. The melamine is used for preparing the migratory steel bar corrosion inhibitor, and the molecular configuration and molecular weight of the steel bar corrosion inhibitor can be adjusted to meet the requirements of different ocean engineering. The application field of melamine monomers is widened, and the production cost of the migratory steel bar corrosion inhibitor is reduced. Meanwhile, the problems that the process for preparing the steel bar corrosion inhibitor from imidazole, pyrimidine, pyridine, five-membered and six-membered heterocyclic chemicals is complex, and highly toxic waste gas is generated in the productionprocess are solved. The prepared migratory corrosion inhibitor has a good corrosion inhibition effect on reinforcing steel bars, realizes the high performance of the reinforcing steel bar corrosion inhibitor, and has a wide application prospect.
本发明提供了一种含磷酸基的三聚氰胺‑甲醛低聚物型迁移性钢筋阻锈剂制备方法。首先利用三聚氰胺上氨基基团，将三聚氰胺改性成含羟甲基、磷酸基三聚氰胺单体。然后含羟甲基、磷酸基的三聚氰胺分子发生分子内脱水得直链状三聚氰胺‑甲醛低聚物型迁移性钢筋阻锈剂。使用三聚氰胺制备迁移性钢筋阻锈剂，可调节钢筋阻锈剂分子构型和分子量以满足不同海洋工程的需要。还拓宽了三聚氰胺单体应用领域，降低了迁移性钢筋阻锈剂生产成本。同时避免了使用咪唑、嘧啶、吡啶、五元和六元杂环化工品制备钢筋阻锈剂工艺复杂、生产过程中产生剧毒废气问题。本发明制备的迁移性阻锈剂对钢筋有很好的缓锈效果，实现了钢筋阻锈剂的高性化，具有广阔的应用前景。
Preparation method of novel phosphate group-containing melamine-formaldehyde oligomer type migratory steel bar corrosion inhibitor
The invention provides a preparation method of a novel phosphate group-containing melamine-formaldehyde oligomer type migratory steel bar corrosion inhibitor. The preparation method comprises the following steps: firstly, modifying melamine into a melamine monomer containing hydroxymethyl and phosphate groups by utilizing amino groups on melamine; and carrying out intramolecular dehydration on melamine molecules containing hydroxymethyl and phosphate groups to obtain the straight-chain melamine-formaldehyde oligomer type migratory steel bar corrosion inhibitor. The melamine is used for preparing the migratory steel bar corrosion inhibitor, and the molecular configuration and molecular weight of the steel bar corrosion inhibitor can be adjusted to meet the requirements of different ocean engineering. The application field of melamine monomers is widened, and the production cost of the migratory steel bar corrosion inhibitor is reduced. Meanwhile, the problems that the process for preparing the steel bar corrosion inhibitor from imidazole, pyrimidine, pyridine, five-membered and six-membered heterocyclic chemicals is complex, and highly toxic waste gas is generated in the productionprocess are solved. The prepared migratory corrosion inhibitor has a good corrosion inhibition effect on reinforcing steel bars, realizes the high performance of the reinforcing steel bar corrosion inhibitor, and has a wide application prospect.
本发明提供了一种含磷酸基的三聚氰胺‑甲醛低聚物型迁移性钢筋阻锈剂制备方法。首先利用三聚氰胺上氨基基团，将三聚氰胺改性成含羟甲基、磷酸基三聚氰胺单体。然后含羟甲基、磷酸基的三聚氰胺分子发生分子内脱水得直链状三聚氰胺‑甲醛低聚物型迁移性钢筋阻锈剂。使用三聚氰胺制备迁移性钢筋阻锈剂，可调节钢筋阻锈剂分子构型和分子量以满足不同海洋工程的需要。还拓宽了三聚氰胺单体应用领域，降低了迁移性钢筋阻锈剂生产成本。同时避免了使用咪唑、嘧啶、吡啶、五元和六元杂环化工品制备钢筋阻锈剂工艺复杂、生产过程中产生剧毒废气问题。本发明制备的迁移性阻锈剂对钢筋有很好的缓锈效果，实现了钢筋阻锈剂的高性化，具有广阔的应用前景。
Preparation method of novel phosphate group-containing melamine-formaldehyde oligomer type migratory steel bar corrosion inhibitor
新型含磷酸基的三聚氰胺-甲醛低聚物型迁移性钢筋阻锈剂的制备方法
ZHAO HUI (Autor:in) / CHEN DA (Autor:in) / LIAO YINGDI (Autor:in) / OUYANG FENG (Autor:in) / XUAN WEIHONG (Autor:in) / XU HAISHENG (Autor:in)
05.06.2020
Patent
Elektronische Ressource
Chinesisch
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