一种含氧化镧铈的缓蚀防锈粉剂及其制备方法

By combining choline-amino acid ionic liquid and boron nitride quantum dots loaded with 8-hydroxyquinoline and other components on lanthanum oxide cerium solid solution, a multi-level protective network is formed, which solves the problems of insufficient density and poor adhesion of rare earth oxide passivation film, and achieves efficient and long-lasting metal rust prevention effect.

CN121779966BActive Publication Date: 2026-07-17TIANJIN RONGRUI TECHNOLOGY DEVELOPMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TIANJIN RONGRUI TECHNOLOGY DEVELOPMENT CO LTD
Filing Date
2025-12-02
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The passivation film formed by existing rare earth oxides on metal surfaces is not dense enough, has poor adhesion, and is easy to be lost, resulting in a shortened rust prevention cycle. Traditional physical mixing methods cannot achieve uniform dispersion of rare earth particles and the influence of crystal form on passivation performance.

Method used

Using lanthanum oxide cerium solid solution as the core, combined with choline-amino acid ionic liquid, boron nitride quantum dots loaded with 8-hydroxyquinoline and nano titanium dioxide, a three-level protection network of "defect capture-intelligent release-self-repair" is formed. The porous flower-like structure and synergistic effect improve adhesion and corrosion inhibition efficiency, and self-repair is achieved by utilizing the pH-responsive release of choline-amino acid ionic liquid and the π-π accumulation and enrichment mechanism of boron nitride quantum dots.

Benefits of technology

It significantly improves corrosion inhibition rate and rust prevention durability, forms a dense oxide repair layer, enhances coating adhesion and durability, and is suitable for long-term environmental protection of various metal materials.

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Abstract

本申请涉及涂料领域，尤其是一种含氧化镧铈的缓蚀防锈粉剂及其制备方法。一种含氧化镧铈的缓蚀防锈粉剂，包括以下重量份原料：氧化镧铈固溶体45‑55份、胆碱‑氨基酸离子液体8‑12份、氮化硼量子点负载8‑羟基喹啉复合物5‑10份、硅烷偶联剂3‑5份、纳米二氧化钛30‑40份。本申请得到的防锈粉剂兼具高缓蚀率、长效耐盐雾与快速划痕自愈，且全体系无铬无磷，可直接掺入现有涂料，施工简便，适用于碳钢、不锈钢等多种金属的长效环保防护。
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Citation Information

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