| 防老剂类型对氯丁橡胶胶料耐海水老化性能的影响及其老化机制 |
| Influence of Antioxidant Types on Seawater Aging Resistance of CR Compouds and Its Aging Mechanism |
| 投稿时间：2025-01-06 修订日期：2025-01-06 |
| DOI：10.12136/j.issn.1000-890X.2026.06.0425 |
| 中文关键词: 氯丁橡胶 耐海水老化性能 胺类防老剂 高相对分子质量防老剂 反应型防老剂 |
| 英文关键词: CR seawater aging resistance amine antioxidants high molecular weight antioxidant reactive antioxidant |
| 基金项目: |
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| 中文摘要: |
| 研究防老剂类型对氯丁橡胶（CR）胶料耐海水老化性能的影响及其老化机制。结果表明：在深海环境浸泡（深海老化）过程中，CR胶料中的防老剂迁移析出，导致CR胶料的耐老化性能急速下降；在深海老化3 a后，CR胶料中的防老剂基本消失；与胺类防老剂4020制备的CR胶料相比，高相对分子质量防老剂TNPP/TH-1790并用或高相对分子质量防老剂（TNPP和TH-1790）/反应型防老剂BZ20并用制备的CR胶料的邵尔A型硬度、拉伸强度和拉断伸长率增大；高相对分子质量防老剂（TNPP和TH-1790）/反应型防老剂BZ20并用制备的CR胶料的物理性能最佳，耐海水老化（60 d）性能最好。 |
| 英文摘要: |
| The influence of antioxidant types on the seawater aging resistance of chloroprene rubber（CR） compounds and its aging mechanism were studied.The results showed that during deep-sea environment immersion（deep-sea aging） process，the antioxidant of CR compound migrated and precipitated ，leading to a rapid decline in the aging resistance of CR compound.The antioxidant in CR compound was essentially eliminated after aging in deep-sea for 3 a.Compared to CR compound prepared with amine antioxidant 4020，the Shore A hardness，tensile strength and elongation at break of CR compound prepared with high molecular weight antioxidants TNPP/TH-1790 blend or high molecular weight antioxidants（TNPP and TH-1790）/reactive antioxidant BZ20 blend increased.The physical properties of CR compound prepared with high molecular weight antioxidants（TNPP and TH-1790）/ reactive antioxidant BZ20 blend were optimal，and the seawater aging resistance was the best. |
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