The Diels-Alder (DA) and thiol-maleimide reactions of difurfuryl disulfide (DFDS), 1,4-bismaleimidodiphenylmethane (BMI), pentaerythritol tetrakis(3-mercaptopropionate) (PETMP), and thiol-terminated disulfide-containing polyether (LP) at various feed monomer ratios produced polymer networks containing both DA adduct moieties and disulfide bonds. Fourier transform infrared spectral analysis revealed that the DA and thiol-maleimide reactions occurred for all the cured products. A differential thermal analysis revealed that all the cured products exhibited an endothermal peak due to the retro-DA reaction at 115–124 °C. The tensile moduli and strengths of the cured products increased with increasing DFDS (or DA) and PETMP fractions. The elongations at break increased with increasing LP (or disulfide) fraction. Most of the cured products exhibited self-healing ability by annealing at 60 °C for 24 h, and/or at 120 °C for 1 h followed by additional annealing at 60 °C for 24 h. The cured product with a higher LP (or disulfide) fraction exhibited a better healing ability at 60 °C for 24 h by the disulfide metathesis. Also, the cured product with a higher DFDS fraction exhibited a better healing ability at 120 °C for 1 h and 60 °C for 24 h by the DA/retro-DA reaction.

二糠基二硫化物 (DFDS)、1,4-双马来酰亚胺二苯基甲烷 (BMI)、季戊四醇四(3-巯基丙酸酯) (PETMP) 和硫醇封端的含二硫化物的聚醚 (LP) 的 Diels-Alder (DA) 和硫醇-马来酰亚胺反应在不同的进料单体比例下，产生了包含 DA 加合物部分和二硫键的聚合物网络。傅里叶变换红外光谱分析表明，所有固化产物都发生了 DA 和硫醇-马来酰亚胺反应。差热分析表明，由于 115–124 °C 的逆向 DA 反应，所有固化产物均显示出吸热峰。固化产品的拉伸模量和强度随着 DFDS（或 DA）和 PETMP 分数的增加而增加。断裂伸长率随着 LP（或二硫化物）分数的增加而增加。通过在 60°C 下退火 24 小时和/或在 120°C 下退火 1 小时，然后在 60°C 下额外退火 24 小时，大多数固化产品表现出自愈能力。具有较高 LP（或二硫化物）分数的固化产品在 60°C 下通过二硫化物复分解表现出更好的愈合能力 24 小时。此外，通过 DA/retro-DA 反应，具有较高 DFDS 分数的固化产品在 120 °C 下 1 小时和 60 °C 下 24 小时表现出更好的愈合能力。