Fombuena Vicent, Petrucci Roberto, Dominici Franco, Jordá-Vilaplana Amparo, Montanes Néstor, Torre Luigi
Instituto de Tecnología de Materiales (ITM), Universitat Politècnica de València (UPV), Plaza Ferrándiz y Carbonell s/n, 03801 Alcoy, Alicante, Spain.
Materials Engineering Center, University of Perugia, Località Pentima Bassa, 21, 05100 Terni, Italy.
Polymers (Basel). 2019 Feb 11;11(2):301. doi: 10.3390/polym11020301.
Green composites, with more than 78 wt.% of products obtained from linen , were developed in this research work. Epoxidized linseed oil (ELO) was used as bio-based resin, a mix of nadic methyl anhydride (MNA) and maleinized linseed oil (MLO) were used as cross-linkers and finally, flax fabrics were used to obtain composite laminates by resin transfer molding (RTM). The flax fibers were modified using amino-silane, glycidyl-silane and maleic anhydride treatment in order to increase the compatibility between lignocellulosic fibers and the polymeric matrix. Mechanical and thermal properties were studied by flexural, tensile and impact test, as well as dynamic mechanical analyses (DMA) to study the viscoelastic behavior. Contrary to what could be expected, when fibers are previously treated in presence of MLO, a reduction of anchorage points is obtained causing a substantial increase in the ductile properties compared with composites without previous fiber treatment or without MLO.
在本研究工作中，开发了绿色复合材料，其产品中超过78 wt.% 的成分来自亚麻。环氧亚麻籽油（ELO）用作生物基树脂，纳迪克甲基酐（MNA）和马来化亚麻籽油（MLO）的混合物用作交联剂，最后，使用亚麻织物通过树脂传递模塑（RTM）获得复合层压板。为了提高木质纤维素纤维与聚合物基体之间的相容性，对亚麻纤维进行了氨基硅烷、缩水甘油基硅烷和马来酸酐处理。通过弯曲、拉伸和冲击试验研究了力学性能和热性能，并通过动态力学分析（DMA）研究了粘弹性行为。与预期相反，当纤维预先在MLO存在的情况下进行处理时，锚固点会减少，与未进行纤维预处理或未使用MLO的复合材料相比，其韧性性能会大幅提高。
