Novel elastomers filled with different contents of silica through a two-step one-pot thiol-ene reaction were reported. Two monomers of poly (ethylene glycol) dimethacrylate and 1,6-hexanedithiol were used in the first step to synthesize a vinyl-terminated prepolymer at room temperature. In the second step, silica and chemical cross-linker trimethylolpropane tris(3-mercaptopropionate) were directly added to the prepolymer in sequence and transparent elastomers were obtained in 30 min at room temperature. The cross-linking kinetics and mechanical properties in the presence of different contents of silica were investigated in detail by rheological, tensile and cyclic loading measurements. It was found that silica had a significant reinforcing effect on the mechanical properties of the elastomers. Our synthetic method is simple, solvent-free and energy- and cost-efficient. Our findings pave a new way to fabricate novel sulfur-containing elastomers using thiol-ene chemistry.

报道了通过两步一锅硫醇-烯反应填充有不同含量二氧化硅的新型弹性体。在第一步中，使用聚乙二醇二甲基丙烯酸酯和1,6-己二硫醇的两种单体在室温下合成乙烯基封端的预聚物。在第二步中，将二氧化硅和化学交联剂三羟甲基丙烷三（3-巯基丙酸酯）依次添加到预聚物中，并在室温下30分钟内获得透明弹性体。通过流变，拉伸和循环载荷测量，详细研究了在二氧化硅含量不同的情况下的交联动力学和机械性能。发现二氧化硅对弹性体的机械性能具有显着的增强作用。我们的合成方法很简单，无溶剂，节能高效。我们的发现为使用硫醇-烯化学方法制备新型含硫弹性体铺平了道路。