# 노화된 천연고무의 유전특성에 미치는 가황의 영향

• Kim, Bong-Heup (Department of Electrical Engineering, College of Engineering, Han Yang University) ;
• Kim, Wang-Kon (Department of Electrical Engineering, Kong Gi National Open University) ;
• Lee, Joon-Ung (Department of Electrical Engineering, Kwang Woon University)
• 김봉흡 (한양대학교 공과대학 전기공학과) ;
• 김왕곤 (경기공업개방대학 전기공학과) ;
• 이준웅 (광운대학 전기공학과)
• Published : 1986.09.30

#### Abstract

The dielectric properties of natural rubber are very important to investigate the molecular structure. The charcteristics of the dielectric absorption in aging natural rubber were studied in the range of frequency from $1{\times}10^3Hz\;to\;3.2{\times}10^7Hz$ at the temperature of $23^{\circ}C$. As the results, it has been confirmed that in the case of aged NR vulcanized specimen with contained sulfur 2 phr above the specimens exhibit two kind of dielectic losses due to the the dipole polarization by impurities and sulfurs, and of raw rubber exhibit the kind of losses due the to dipole polarization. Particularly, it has been affirmed that the dielectric loss spectrum of the aging natural rubber is larger than that the natural rubber, and the dielectric strength of the aging natural rubber drop depreciate respctively.