Preparation and Dielectric Behavior of D-Glass with Different Boron Contentsopen access
- Authors
- Jeong, Bora; Lee, Ji-Sun; Lee, Mijai; Lim, Tae-Young; Lee, Youngjin; Jeon, Dae-Woo; Shin, Dongwook; Kim, Jin-Ho
- Issue Date
- Jan-2017
- Publisher
- MATERIALS RESEARCH SOC KOREA
- Keywords
- glass composition; D-glass; permittivity; low dielectric constant glass; transmittance
- Citation
- KOREAN JOURNAL OF MATERIALS RESEARCH, v.27, no.1, pp.39 - 42
- Indexed
- SCOPUS
KCI
- Journal Title
- KOREAN JOURNAL OF MATERIALS RESEARCH
- Volume
- 27
- Number
- 1
- Start Page
- 39
- End Page
- 42
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/21262
- DOI
- 10.3740/MRSK.2017.27.1.39
- ISSN
- 1225-0562
- Abstract
- E-glass (electrical glass) fiber is the widely used as a reinforced composite material of PCBs (printed circuit boards). However, E-glass fiber is not stable because it has a dielectric constant of 6~7. On the other hand, D-glass (dielectric glass) fiber has a low dielectric constant of 3~4.5. Thus, it is adaptable for use as a reinforcing material of PCBs. In this study, we fabricated D-glass compositions with low dielectric constant, and measured the electrical and optical properties. In the glass composition, the boron content was changed from 9 to 31 wt%. To confirm the dependence of the dielectric constant on melting properties, D-glass with 22 wt% boron was melted at 1550 °C and 1650 °C for 2hrs. The glass melted at 1650 °C had a lower dielectric constant than the glass melted at 1550 °C. Therefore, the D-glass with boron of 9~31 wt% was fabricated by melting at 1650 °C for 2hrs, and transparent clear glass was obtained. We identified the non-crystalline nature of the glass using an XRD (x-ray diffractometer) graph. The visible light transmittance values depending on the boron contents were measured and found to be 88.6%~ 82.5%. Finally, the dielectric constant of the D-glass with 31 wt% boron was found to have decreased from 4.18 to 3.93.
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