Networked poly(thiourethane) materials with T_gs around 130 °C, derived from two aliphatic isocyanates (isophorone diisocyanate, IPDI and 4,4′-methylene bis(cyclohexyl isocyanate), HMDI) and one aromatic diisocyanate (toluene-2,4-diisocyanate, TDI) have been prepared with the same trithiol as comonomer (trimethylol propane tris(3-mercaptopropionate), S3) in stoichiometric proportions in the presence of dibutyltin dilaurate (DBTDL) as the catalyst. The higher reactivity of TDI allowed the preparation of this material in absence of catalyst.

The evolution of the curing process has been followed by FTIR. Thermomechanical studies have been performed to determine their viscoelastic properties and their vitrimeric behaviour. The materials were able to reach a complete relaxation stress state thanks to the exchange process of the thiourethane moiety. Among them, TDI derived material experimented the fastest relaxation. The materials were also characterized by thermogravimetry and tensile tests.

The recycled materials obtained by grinding the original thermosets and hot-pressing the powder have been fully characterized by mechanical, thermomechanical and FTIR studies, which allowed to confirm their recyclability without appreciable changes in the network structure. The presence of DBTDL in the materials has been proved to be necessary to reach a good recyclability.

联网的聚（硫代氨基甲酸酯）与材料Ť_克S周围130℃，从两个脂族异氰酸衍生的（异佛尔酮二异氰酸酯，IPDI和4,4'-亚甲基双（环己基异氰酸酯），HMDI）和一种芳族二异氰酸酯（甲苯-2,4-二在二月桂酸二丁锡（DBTDL）作为催化剂的情况下，以化学计量比例用与共聚单体相同的三硫醇（三羟甲基丙烷三（3-巯基丙酸酯），S3）制备三异氰酸酯（TDI）。TDI的较高反应活性使该材料无需催化剂即可制备。

FTIR跟踪了固化过程的发展。已经进行热力学研究以确定它们的粘弹性和其玻璃化行为。由于硫代氨基甲酸酯部分的交换过程，该材料能够达到完全的松弛应力状态。其中，TDI衍生材料进行了最快的松弛实验。还通过热重分析和拉伸试验对材料进行了表征。

机械，热机械和FTIR研究已充分表征了通过研磨原始热固性材料并热压粉末而获得的可回收材料，这些材料可确认其可回收性，而网络结构没有明显变化。材料中DBTDL的存在已被证明对于达到良好的可回收性是必要的。