Terahertz dielectric spectroscopy based thermal-oxidative aging analysis of polyvinyl chloride

被引：0

作者：

Zhang, Xiansheng ^{[1
,2
,3
]}

Feng, Tianli ^{[1
,2
]}

Li, Yizhang ^{[3
]}

Shang, Jingcheng ^{[1
,2
]}

机构：

[1] Shandong Univ, Key Lab Laser & Infrared Syst, Minist Educ, Qingdao 266237, Peoples R China

[2] Shandong Univ, Sch Informat Sci & Engn, Qingdao, Peoples R China

[3] Qilu Univ Technol, Inst Automat, Shandong Acad Sci, Jinan, Peoples R China

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2024年 / 66卷 / 01期

基金：

中国国家自然科学基金;

关键词：

permittivity; PVC; terahertz; thermo-oxidative aging; DEGRADATION;

D O I：

10.1002/mop.33995

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Polyvinyl chloride (PVC) is a polymer widely used in the world whereas safety problems owing to PVC aging are often reported. Thermal-oxidative aging is known the main cause of its performance deterioration and lifetime decreasing. The existing PVC aging detection methods are complicated, making it difficult to achieve rapid on-site diagnosis. The purpose of this paper is to evaluate the degree of PVC aging by means of terahertz technology. Samples were subject to thermal-oxidative aging, and the corresponding dielectric spectra were measured by a terahertz time-domain spectrometer. It turns out that the aging dependent dielectric spectra conforms to the physicochemical theory. Moreover, numerical correlation between the change in permittivity and the degree of aging, underlying a new solution for the aging forecast aimed at plastics.

引用

页数：5

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