一种新颖创新的纳米复合材料缓蚀剂输送系统，具有高效的水性环氧树脂涂层性能

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-10-11 DOI:10.1016/j.colsurfa.2025.138655

Dongxia Huo , Xin Li , Bowen Yuan , Jie Chen , Xiayan Li , Huan Yang , Junhui Dong , Ying Zhan , Jun Liu , Ding Nan

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引用次数: 0

摘要

近年来，纳米材料的发展在提高防护涂层的耐腐蚀性方面显示出巨大的前景。我们开发了一种纳米材料，在缓蚀、封装和可控释放方面表现出优异的性能。采用原位生长法在氧化石墨烯（GO）衬底上合成了一种新型的沸石型咪唑酸骨架-67 （ZIF-67）材料，作为缓蚀剂苯并三唑（BTA）的高效载体。在此基础上，引入聚乙烯亚胺（PEI）包封ZIF-67/GO，从而调节缓蚀剂的释放。随后，将复合填料（ZIF-67/GO@BTA/PEI）分别以0.1 %、0.2 %和0.3 %的质量比掺入WEP涂层中。在3.5 wt% NaCl溶液中，浸泡240 h， ZIF-67/GO@BTA/PEI复合涂层试样表现出优异的耐腐蚀性，保持了较高的低频阻抗模量。在添加0.2 wt%时，低频阻抗模量（|Z|0.01 Hz）的值达到5.81 × 109 Ω·cm2。利用主动缓释和被动层状阻隔机制的协同作用，水性环氧树脂（WEP）涂层具有优异的耐蚀性和高效的防腐性能。该复合涂层样品具有重要的实际应用潜力。

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A novel innovative nanocomposite material corrosion inhibitor delivery system for highly efficient waterborne epoxy resin coating performance

In recent years, the advancement of nanomaterials has demonstrated immense promise in enhancing the corrosion resistance of protective coatings. We have developed a nanomaterial that exhibits exceptional performance in corrosion inhibition encapsulation and controllable release. A novel zeolitic imidazolate framework-67 (ZIF-67) material was synthesized on graphene oxide (GO) substrate via in-situ growth approach, serving as an efficient carrier for the corrosion inhibitor benzotriazole (BTA). Building upon this, polyethyleneimine (PEI) was introduced to encapsulate ZIF-67/GO, thereby modulating the release of corrosion inhibitors. Subsequently, the composite filler (ZIF-67/GO@BTA/PEI) was incorporated into the WEP coating at mass ratios of 0.1 %, 0.2 %, and 0.3 %, respectively. In a 3.5 wt% NaCl solution, a 240 h immersion period revealed that the composite coating specimen with ZIF-67/GO@BTA/PEI exhibited consistently superior corrosion resistance, retaining a high modulus of low-frequency impedance. At an addition level of 0.2 wt%, the value of the low-frequency impedance modulus (|Z|_0.01 Hz) hit 5.81 × 10⁹ Ω·cm². By harnessing the synergistic effects of active sustained release and a passive lamellar barrier mechanism, the waterborne epoxy resin (WEP) coating was endowed with superior resistance and highly effective corrosion protection. The composite coating sample exhibits significant potential for practical application.

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.