红外与激光工程, 2018, 47 (10): 1025002, 网络出版: 2018-11-25   

天然硫化橡胶热氧老化中太赫兹介电谱

Terahertz dielectric spectroscopy of natural vulcanized rubber by thermal oxidation
作者单位
1 齐鲁工业大学(山东省科学院) 山东省科学院自动化研究所 超宽带与太赫兹技术培育性重点实验室, 山东 济南 250014
2 吉林大学 仪器科学与电气工程学院, 吉林 长春 130061
摘要
天然橡胶制品的老化是其使用中普遍存在的现象, 老化的本质是材料本身存在缺陷而容易被外部因素影响。介电谱是表征电介质对电磁波频率或温度的依赖关系, 是微观极化的一种宏观体现。参照橡胶热空气老化标准GB/T3512-2014, 对天然硫化橡胶在100 ℃实验箱中进行了1 000余小时热氧实验, 研究样品的太赫兹介电谱随老化时间的变化关系。通过跟踪测试, 获取了橡胶每24 h在0.2~1.2 THz的复介电常数和损耗角正切值有效数据, 根据复介电常数数值可以推导橡胶的极化特点和统计性的微观运动类型, 进而分析用太赫兹介电谱表征的天然硫化胶热氧老化过程中分子结构变化和相互的对应关系。由于材料老化的相通性, 该结果对研究其他高分子材料的老化也能起到积极的意义。
Abstract
The aging of natural rubber products is a common phenomenon in its use, and the essence of aging is that the material itself is flawed and easily affected by external factors. Dielectric spectrum is a macroscopic manifestation of micro-polarization which is the dependence of dielectric constant on electromagnetic frequency or temperature. According to the plastic/rubber hot air aging standard GB/ T3512-2014, the thermal oxygen experiment of natural vulcanized rubber was carried out in the experimental chamber of 100 ℃ for more than 1 000 hours, and the relationship between the dielectric spectrum of samples and aging time was studied. By tracking test, the effective data of complex permittivity and loss tangent value of 0.2-1.2 THz rubber were obtained every 24 hours. Based on the complex permittivity values, the polarization characteristics of the deduced rubber and the statistical microcosmic movement types can be calculated, and the molecular structure changes of the natural vulcanizates characterized by terahertz dielectric spectrum were analyzed. Due to the similarity of the aging of the material, the results can also play a positive role in studying other polymer materials aging.(2017QN0015); 山东省科学院创新工程专项

张献生, 常天英, 崔洪亮, 杨秀蔚, 刘陵玉, 张延波. 天然硫化橡胶热氧老化中太赫兹介电谱[J]. 红外与激光工程, 2018, 47(10): 1025002. Zhang Xiansheng, Chang Tianying, Cui Hongliang, Yang Xiuwei, Liu Lingyu, Zhang Yanbo. Terahertz dielectric spectroscopy of natural vulcanized rubber by thermal oxidation[J]. Infrared and Laser Engineering, 2018, 47(10): 1025002.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!