| 商旭静,党恒耀,薛志博,由宝财,邢丕臣,王宇,查小琴.FX-4氟橡胶的老化行为研究[J].装备环境工程,2023,20(8):1-8. SHANG Xu-jing,DANG Heng-yao,XUE Zhi-bo,YOU Bao-cai,XING Pi-chen,WANG Yu,ZHA Xiao-qin.Aging Behavior of FX-4 Fluororubber[J].Equipment Environmental Engineering,2023,20(8):1-8. |
| FX-4氟橡胶的老化行为研究 |
| Aging Behavior of FX-4 Fluororubber |
| 投稿时间：2023-03-09 修订日期：2023-04-27 |
| DOI：10.7643/issn.1672-9242.2023.08.001 |
| 中文关键词: FX-4氟橡胶 密封 温度 介质 应变 老化中图分类号:V254.1 TQ336.8 文献标识码:A 文章编号:1672-9242(2023)08-0001-08 |
| 英文关键词:FX-4 fluororubber seal temperature medium strain aging |
| 基金项目: |
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| Author | Institution |
| SHANG Xu-jing | AECC Shenyang Engine Design Institute, Shenyang 110015, China |
| DANG Heng-yao | Luoyang Ship Material Research Institute, Henan Luoyang 471023, China |
| XUE Zhi-bo | AECC Shenyang Engine Design Institute, Shenyang 110015, China |
| YOU Bao-cai | AECC Shenyang Engine Design Institute, Shenyang 110015, China |
| XING Pi-chen | AECC Shenyang Engine Design Institute, Shenyang 110015, China |
| WANG Yu | AECC Shenyang Engine Design Institute, Shenyang 110015, China |
| ZHA Xiao-qin | Luoyang Ship Material Research Institute, Henan Luoyang 471023, China |
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| 中文摘要: |
| 目的 研究FX-4氟橡胶在不同工况条件下的老化行为，为工程实践中科学评估装备使用寿命提供依据。方法 基于某装备对FX-4氟橡胶材料的使用要求，设计5种模拟工作状态条件的老化试验，通过观测样品外观形貌、力学、化学结构、打压密封等性能变化，研究FX-4氟橡胶在不同温度、不同介质和不同应变作用下的老化行为。结果 经过9 000 h老化试验，FX-4氟橡胶的压缩永久变形表现出明显增加的趋势，且增长速率呈现出先增大、再放缓、随后再次增大的变化规律。分解温度由508 ℃提升为520 ℃左右，表面结晶度和内部结晶度由61.7%分别下降为37%和48%左右，表明老化损伤由样品表面逐渐向内部扩展。分子结构没有发生根本改变，打压密封功能良好。结论 经过9 000 h老化试验后，FX-4氟橡胶出现不同程度的性能老化，但仍具备良好的密封性能，可正常使用。 |
| 英文摘要: |
| The work aims to study the aging behavior of FX-4 fluororubber under different working conditions to provide a scientific basis for assessing life of equipment in engineering practice. Based on the requirements of a certain equipment for the use of FX-4 fluororubber material, five aging tests were designed to simulate the working conditions. The aging behavior of FX-4 fluororubber under different temperature, media and strain was studied by observing the changes of appearance, mechanical properties, chemical structure, sealability, etc. After 9 000 hours of aging test, the compression set of FX-4 fluororubber showed an obvious increase trend, and the growth rate first increased, then slowed down and finally increased again. The decomposition temperature increased from 508 ℃ to about 520 ℃. The surface crystallinity and internal crystallinity decreased from 61.7% to about 37% and 48% respectively, indicating that the aging damage gradually extended from the surface to the interior of the sample. The molecular structure did not change fundamentally, and the sealability was not damaged. After 9 000 hours of aging test, FX-4 fluororubber has different degrees of aging, but still has good sealability and can be used normally. |
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