Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2001.07c
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- Pages.1337-1339
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- 2001
Change in Molecular Weight Distribution of Diffusible Species on RTV Silicone Rubber Using Solvent Extraction and Recovery Rate of Hydrophobicity
용매추출에 의한 옥외용 RTV 실리콘고무의 분자량 변화와 발수성 회복속도
- Lee, Chang-R. (Hyundai Electro-Mechanical Research Institute, HHI. Korea) ;
- Kim, Dong-H. (Hyundai Electro-Mechanical Research Institute, HHI. Korea) ;
- Choi, Yong-C. (Hyundai Electro-Mechanical Research Institute, HHI. Korea) ;
- Kim, Jong-G. (Hyundai Electro-Mechanical Research Institute, HHI. Korea) ;
- Homma, H. (CRIEPI, Yokosuka, Japan) ;
- Izumi, K. (CRIEPI, Yokosuka, Japan)
- 이창용 (현대중공업 기전연구소) ;
- 김동현 (현대중공업 기전연구소) ;
- 최영찬 (현대중공업 기전연구소) ;
- 김종구 (현대중공업 기전연구소) ;
- 본간광야 ((재) 일본전력중앙연구소) ;
- 천국방 ((재) 일본전력중앙연구소)
- Published : 2001.07.18
Abstract
We have investigated the relation between the molecular weight distribution (MWD) of diffusible species and the recovery rate of hydrophobicity of room-temperature vulcanizing (RTV) silicone rubber (SIR) using solvent extraction at various temperatures. It was observed that the extract had a MWD ranging from a few hundreds g/mol to hundreds of thousands g/mol. By measuring the migration of siloxane to the extracted SIR surface through a thin carbon coating, the aspect of migration of diffusible species was observed as a real time plot, and the time constant of the migration was also calculated. According to the time dependence of IR-absorbance, the time constant was increased with the increase of MW of the extracts.
Keywords