Biobased, solvent-free thermosetting coating systems are developed from epoxidized hydroxymethylfuran (BOMF) crosslinked with methyl nadic anhydride (MNA) filled with TiO₂ nanoparticles. The effect of 1 to 5 wt% of TiO₂ on the curing behavior of the resin and the overall performance of the resulting coatings is studied by means of rheological, thermal, mechanical, morphological, and chemical resistance tests. TiO₂ particles shift the curing reaction to higher temperatures and reduce the reaction enthalpy, resulting in lower crosslinking degrees and glass transition temperatures. The resins are applied as tinplate coatings, exhibiting optimal adhesion to the metal substrate (5A according to ASTM D3359), and performing well in pencil hardness tests (9H and 7H in gouge and scratch hardness, respectively). Morphological characterization highlights homogeneous distribution of TiO₂ nanoparticles even at the highest loading. Finally, the chemical resistance of the coatings to ethanol and acetic acid solutions used as simulants is significantly enhanced by the addition of TiO₂, resulting in an efficient protection of the tinplate from corrosion. Overall, these results demonstrate that the proposed furan-based thermosets show potential for use as coatings.

生物基，无溶剂的热固性涂料体系是由环氧化的羟甲基呋喃（BOMF）与填充有TiO ₂纳米颗粒的甲基纳迪酸酐（MNA）交联开发的。通过流变，热，机械，形态和化学耐性试验研究了1-5wt％的TiO ₂对树脂的固化行为和所得涂层的整体性能的影响。二氧化钛₂颗粒将固化反应转移到更高的温度并降低了反应焓，从而降低了交联度和玻璃化转变温度。该树脂用作马口铁涂层，在金属基材上表现出最佳的附着力（根据ASTM D3359为5A），并且在铅笔硬度测试中表现良好（切屑硬度和划痕硬度分别为9H和7H）。形态表征突出了即使在最高负载下TiO ₂纳米颗粒的均匀分布。最后，通过添加TiO ₂可显着提高涂层对用作模拟物的乙醇和乙酸溶液的耐化学性，从而有效地保护了马口铁免受腐蚀。总体而言，这些结果表明，所提出的基于呋喃的热固性材料具有用作涂料的潜力。