摘要： 针对现有环氧石墨烯玻璃鳞片涂料环境污染大、防腐性能周期短、漆膜柔韧性差、不能采用传统喷涂施工工艺等问题，以长碳链羰基化合物功能增韧树脂与低相对分子质量的液体双酚 A环氧树脂作为成膜物，无溶剂改性脂环胺和腰果壳油酚醛胺作为固化剂，引入纳米级片状石墨烯，复配玻璃鳞片，共同构建三维立体屏蔽层，制备了低黏度无溶剂型环氧石墨烯玻璃鳞片重防腐涂料。探讨了树脂复配比例、固化剂复配比例、玻璃鳞片和石墨烯加量对涂层防腐性能的影响。结果表明：当 m（E51环氧树脂） ∶m（312树脂）=2∶1、m（CK-5106脂环胺） ∶m（D0590腰果壳油酚醛胺） =10∶1、玻璃鳞片质量分数为 20%、石墨烯质量分数为0. 4%时，涂料常温下黏度低至 90 KU，可直接采用传统的高压无气喷涂施工工艺，制备的涂层防腐性能优异、柔韧性佳，固含含量接近 100%，较传统涂层厚度降低 60%，可满足石油炼化、海洋等领域防腐蚀标准及需求。
关键词:
低黏度,
无溶剂涂料,
环氧,
石墨烯,
玻璃鳞片,
防腐
Abstract: For the existing problems of graphene/glass flake epoxy coatings，such as high environmental pollution，short anti-corrosion period，poor flexibility，and bad applicability for traditional spraying construction，a low-viscosity solvent-free graphene/glass flake epoxycoatings was prepared. The long carbon chain carbonyl compound functionalized toughenedresin and low molecular weight liquid bisphenol A epoxy resin were used as film-formingagents，solvent-free modified alicyclic amine and phenolic amine were used as curing agents. Atthe same time，nanoscale flake graphene and glass flakes were introduced to construct a three-dimensional shielding layer. The effects of the compounding ratio of resins，the compounding ratio of curing agents，the dosages of glass flakes and graphene on the anti-corrosion performance ofcoatings were explored. The results showed that when m（E51 epoxy resin）∶m（312 resin）=2∶1， m（CK-5106 alicyclic amine）∶m（D0590 phenolic amine）=10∶1，the mass fraction of glass flakes and graphene was 20% and 0. 4%，respectively，the viscosity of the coatings at room temperature was as low as 90 KU，which was suit for traditional high-pressure airless spraying.The prepared coating showed excellent anti-corrosion performance，good flexibility，and highvolume solid content close to 100%. The coating thickness could be reduced by 60% comparedto the traditional coating，which could meet the anti-corrosion standards and requirements infields such as petroleum refining and marine engineering.
Key words:
low viscosity；solvent-free coating；epoxy；graphene；glass flake；anti-corrosion
中图分类号:
王小牧, 雍涛, 王雷, 等. 低黏度无溶剂环氧石墨烯玻璃鳞片涂料的研制[J]. 涂料工业, 2024, 54(8): 53-58.
WANG XM, YONG T, WANG L, et al. Development of low-viscosity solvent-free graphene/glass flake based epoxy coatings[J]. Paint & Coatings Industry, 2024, 54(8): 53-58.