In this work, the mechanical properties of Kraft paper (KP) coated with a coating formulated with recycled polystyrene dissolved in the solvent lime limonene (rEPS/LL) are investigated. These mechanical properties are compared with those of KP coated with three different commercial coatings: oil-based alkyd coating (ALKY), oil-based phenolic coating (PHEN) and water-based acrylic coating (ACRY). The morphology characterization via scanning electron microscopy showed the KP coated with rEPS/LL resembles a layered structure, in which, part of the coating remained on the surface and part of the coating was absorbed by the KP. The KP coated with rEPS/LL exhibited the highest tensile stiffness and compression strength when compared to the uncoated KP and KP coated with commercial coatings. The remarkable compression properties of the KP coated with rEPS/LL coating may be explained by the bending and crushing mechanisms observed during the ring crush test. The excellent mechanical performance of rEPS/LL combined with an environmentally friendly process to obtain recycled EPS using a bio-based solvent presents several advantages for coating applications. These results warrant further research to fully understand the properties of KP coated with rEPS/LL.

在这项工作中，研究了牛皮纸（KP）的机械性能，该纸涂布了由溶解在溶剂石灰柠檬烯（rEPS / LL）中的回收聚苯乙烯配制的涂料。将这些机械性能与涂有三种不同工业涂料的KP的机械性能进行了比较：油基醇酸涂料（ALKY），油基酚醛涂料（PHEN）和水基丙烯酸涂料（ACRY）。通过扫描电子显微镜的形态表征表明，用rEPS / LL涂覆的KP类似于层状结构，其中，部分涂层保留在表面上，并且部分涂层被KP吸收。与未涂覆的KP和涂覆有商业涂料的KP相比，涂覆有rEPS / LL的KP表现出最高的拉伸刚度和压缩强度。涂有rEPS / LL涂层的KP的显着压缩性能可以通过在环压试验中观察到的弯曲和压碎机理来解释。rEPS / LL的出色机械性能与环保工艺相结合，从而可以使用生物基溶剂获得可回收的EPS，从而为涂料应用带来了诸多优势。这些结果值得进一步研究，以充分了解涂有rEPS / LL的KP的性能。