交联催化剂对聚三唑聚醚弹性体性能的影响

The effect of crosslinking catalyst Copper 2，4‑glutarate‑cyclooctadiene complex dosage on the properties of polytriazole‑crosslinked solid elastomer was studied. Propargyl‑terminated ethylene oxide‑tetrahydrofuran copolymer（PTPET）was used as an adhesive and polyazide compound as an curing agent，a series of polytriazole‑crosslinked solid elastomers S1-S4 were prepared by adding crosslinked catalysts of 0.01%，0.02%，0.05% and 0.10%. The chemical structure，thermal stability，mechanical properties and network structure of polytriazole‑crosslinked solid elastomers were characterized by FTIR，TG，equi‑ librium swelling method and DMA. It was found that PTPET elastomer is more stable than PET elastomer，the dosage of the cata‑ lyst did not influence the thermal stability of the elastomer，and the decomposition temperature for all samples is at 405 ℃. The elastomer S2 with 0.02% crosslinking catalyst has the most perfect network structure and the best mechanical properties，and the glass transition temperature is -67.4 ℃.