Rubber recycling technology is a popular issue in many research fields, considering the huge amount of rubber waste in the environment. This paper discusses an application of regenerated ethylene propylene diene monomer (EPDM) to produce vulcanized items such as fiber-reinforced elastomeric isolators (FREIs), which are nowadays considered efficient low-cost seismic protection devices for low rise buildings (e.g., made by masonry) in developing countries. Two types of regenerated EPDM are studies and blended with two different virgin rubbers, Vistalon 3666 and Dutral 4038. The first virgin rubber is used to produce a compound with a hardness of around 30 Shore A, while the latter exhibits 60 Shore A. The present study, which is part of a wider research project aimed at the production of low cost un-bonded seismic isolation devices, focuses exclusively on the determination of both crosslinking degree through rheometer tests and elasticity/mechanical properties of the rubber pads, before and after ageing (hardness, tensile strength, elongation-at-break, stretch-stress behavior before and after ageing). The results show that the compounds with the second reactivated EPDM (type B) exhibit the most satisfactory performance, before and after ageing. This paper discusses also the method of fabrication of FREIs, obtained by the interposition of pads made by the selected recycled rubber and dry glass fiber-reinforced polymer (GFRP) textiles. The hardness tests performed on the sliced FREI specimen indicate that the vulcanization temperature used in the production is roughly suitable to obtain the expected rubber properties.

考虑到环境中大量的橡胶废料，橡胶回收技术是许多研究领域中的热门问题。本文讨论了再生乙烯丙烯二烯单体（EPDM）在生产硫化产品中的应用，例如纤维增强的弹性体隔离器（FREI），这些产品如今被认为是用于低层建筑（例如，砖石结构）的高效低成本地震防护设备）。研究了两种类型的再生EPDM，并将其与两种不同的原始橡胶（Vistalon 3666和Dutral 4038）混合。第一种原始橡胶用于生产硬度约为30 Shore A的化合物，而后者则具有60 Shore A的硬度。这项研究是旨在生产低成本无粘结地震隔离装置的更广泛研究项目的一部分，专门研究老化前后的流变仪测试和橡胶垫的弹性/机械性能（硬度，拉伸强度，断裂伸长率，老化前后的拉伸应力行为）对交联度的确定。结果表明，具有第二种再活化的EPDM（B型）的化合物在老化前后表现出最令人满意的性能。本文还讨论了FREI的制造方法，该方法是通过插入由选定的再生橡胶和干玻璃纤维增​​强聚合物（GFRP）纺织品制成的衬垫而获得的。对切​​片的FREI试样进行的硬度测试表明，生产中使用的硫化温度大致适合于获得预期的橡胶性能。