The ruthenium (Ru) catalyst is the most recently developed poly dicyclopentadiene (p-DCPD) polymer catalyst known to promote stable reactions, even upon contact with oxygen. However, the experimental results showed that exposure times exceeding three days can cause problems during curing due to reaction between oxygen and Ru catalyst. Consequently, 12 days of exposure degraded the mechanical and interfacial properties of p-DCPD or p-DCPD composites reinforced with 40 wt% 50-mm GF by 60%. The structural analysis simulation of the target product also showed noticeable changes in the catalyst that was exposed to air atmosphere for more than six days, which can deteriorate quality. This study demonstrated that when molding structures using p-DCPD, special care should be taken to control atmospheric exposure of the ruthenium catalyst.

中文翻译：

---

暴露于大气中的Ru催化剂的变化对玻璃纤维/ p-DCPD复合材料的界面和冲击性能的影响

钌（Ru）催化剂是最新开发的聚二环戊二烯（p-DCPD）聚合物催化剂，已知该催化剂即使在与氧气接触时也能促进稳定的反应。然而，实验结果表明，由于氧气和Ru催化剂之间的反应，暴露时间超过三天会在固化过程中引起问题。因此，暴露12天会使使用40 wt％50 mm GF增强60％的p-DCPD或p-DCPD复合材料的机械性能和界面性能下降。目标产物的结构分析模拟还表明，暴露于空气中超过六天的催化剂发生了明显变化，这可能会降低质量。这项研究表明，当使用p-DCPD模制结构时，应特别注意控制钌催化剂在大气中的暴露。