| 陈必玉,卢静,余协正,朱晨光.尼龙66材料热空气老化下的力学特性研究[J].装备环境工程,2024,21(12):136-142. CHEN Biyu,LU Jing,YU Xiezheng,ZHU Chenguang.Mechanical Properties of Nylon 66 Material under Thermal Air Aging[J].Equipment Environmental Engineering,2024,21(12):136-142. |
| 尼龙66材料热空气老化下的力学特性研究 |
| Mechanical Properties of Nylon 66 Material under Thermal Air Aging |
| 投稿时间：2024-11-12 修订日期：2024-12-04 |
| DOI：10.7643/issn.1672-9242.2024.12.017 |
| 中文关键词: 高分子 尼龙66 聚酰胺 热空气老化 拉伸强度 冲击强度中图分类号:TQ322.3 文献标志码:A 文章编号:1672-9242(2024)12-0136-07 |
| 英文关键词:polymer nylon 66 polyamide thermal air aging tensile strength impact strength |
| 基金项目: |
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| Author | Institution |
| CHEN Biyu | School of Automation,Nanjing 210094, China |
| LU Jing | School of Automation,Nanjing 210094, China |
| YU Xiezheng | School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
| ZHU Chenguang | School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
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| 中文摘要: |
| 目的 研究获得尼龙66树脂在热空气老化下的力学特性。方法 对尼龙66树脂采取110 ℃、1 000 h的热空气老化方式进行试验，并对老化前后的样品进行表面观察，以及拉伸强度、悬臂梁缺口冲击强度、简支梁缺口冲击强度测试，进而获得尼龙66树脂在相应热空气老化下的力学特性变化规律。结果 老化后，试样的颜色从乳白色变成姜黄色，试样表面完好，无龟裂、粉化；拉伸强度有所上升，平均强度保持率为105.1%；悬臂梁缺口冲击强度略有下降，平均强度保持率为94.7%；简支梁缺口冲击强度略有下降，平均强度保持率为93.9%。结论 尼龙66树脂在相应热空气条件下会发生老化，但短时间内不会引起材料整体力学性能的明显下降。 |
| 英文摘要: |
| The work aims to investigate the mechanical properties of nylon 66 resin under thermal air aging. An experiment was conducted to nylon 66 resin bya thermal air aging method at 110°C for 1000 hours. The surface the sample before and after aging was observed, along with tests for tensile strength, notched impact strength of a cantilever beam, and notched impact strength of a simply supported beam. Thus, the changes in mechanical properties of nylon 66 resin under the specified thermal air aging conditions were determined. The color of the aged sample changed from milky white to amber yellow, with the surface remaining intact, showing no cracking or powdering. The tensile strength of the aged sample increased slightly, with an average strength retention rate of 105.1%. The notched impact strength of the cantilever beam of theaged sample experienced a slight decrease, with an average strength retention rate of 94.7%. Similarly, the notched impact strength of the simply supported beam of the aged sample also presented a slight decline, with an average strength retention rate of 93.9%. In conclusion, nylon 66 resin undergoes aging under the specified thermal air conditions, but this does not lead to a significant decline in the overall mechanical properties of the material in the short term. |
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