本发明公开了一种无溶剂耐磨重防腐生物基环氧复合涂料及其制备方法与应用，它由A组分和B组分组成；其中，以质量份数计算：A组分包括：氧化石墨烯纳米片0 .1～0 .5份；改性钛酸铁钠晶须1～7份；石油基环氧树脂50～70份；生物基活性稀释剂30～50份；消泡剂0 .01～0 .2份；流平剂0 .03～0 .3份；防沉剂0 .05～0 .2份；B组分包括：生物基固化剂50～80份。本发明通过腰果酚基环氧活性稀释剂不仅可以解决无溶剂环氧树脂高粘度的问题，使得涂料施工操作更为简便；而且腰果酚基环氧活性稀释剂可以部分取代石油基环氧树脂，有助于环境保护及绿色可持续发展。制得的复合涂层同时具有优异的耐磨、抗冲击和防腐等性能，在海洋工程等重防腐涂料领域具有巨大的应用潜力。

The present invention discloses a solvent free wear-resistant and heavy-duty anti-corrosion bio based epoxy composite coating, a preparation method and application thereof, which is composed of component A and component B; Among them, calculated by mass fraction: Component A includes: 0.1 to 0.5 portions of graphene oxide nanosheets; 1-7 parts of modified sodium iron titanate whiskers; 50-70 parts of petroleum based epoxy resin; 30-50 parts of bio based active diluents; 0.01-0.2 parts of defoamer; 0.03-0.3 parts of leveling agent; 0.05-0.2 parts of anti settling agent; Component B includes 50-80 parts of bio based curing agent. The present invention not only solves the problem of high viscosity of solventless epoxy resin through the use of cashew phenolic based epoxy active diluent, but also makes the coating construction operation more convenient; Moreover, cashew phenolic based epoxy active diluent can partially replace petroleum based epoxy resin, which contributes to environmental protection and green sustainable development. The composite coating obtained has excellent wear resistance, impact resistance, and anti-corrosion properties, and has enormous application potential in the field of heavy-duty anti-corrosion coatings such as marine engineering.