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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국고분자학회 폴리머 폴리머 제50권 제3호
- 발행연도
- 2026.5
- 수록면
- 431 - 443 (13page)
- DOI
- 10.7317/pk.2026.50.3.431
이용수
초록· 키워드
A novel binuclear titanium FI catalyst bearing bulky tert-butyl substituents was synthesized from a bisphenol A backbone and applied to ethylene polymerization. When activated with methylaluminoxane (MAO), the catalyst exhibited extremely high activity of 9.8×10<sup>6</sup> g PE mol<sup>-1</sup> Ti h<sup>-1</sup>, producing genuinely bimodal high-density polyethylene with a weight-average molecular weight of 4.8×10<sup>5 </sup>g mol<sup>-1</sup>, a polydispersity index of 2.5, and a melting point of 134.2 °C. Composite films (18–40 μm thick) were prepared by melt-compounding the bimodal polyethylene with 10 parts by mass of diamond micropowders (average particle size 1.75–3.75 μm) followed by blown-film extrusion. The resulting diamond-filled composites displayed outstanding dielectric performance (breakdown strength 285–312 kV mm<sup>-1</sup>, dielectric constant 2.68–2.86 at 1 kHz), high in-plane thermal conductivity (6.1–6.6 Wm<sup>-1</sup>K<sup>-1</sup>), and excellent dimensional stability (thermal shrinkage ≤ 0.42% at 150 °C). These properties surpass those of commercial biaxially oriented polypropylene (BOPP) capacitor films and meet the stringent requirements for next-generation marine power-cable insulation and high-voltage capacitor films. This work highlights the unique combination of a rigid bisphenol- A-bridged binuclear FI catalyst and diamond-filled bimodal polyethylene, providing a new route to advanced insulating materials for demanding electrical applications.
#binuclear FI catalyst
#bimodal polyethylene
#diamond-filled composites
#dielectric/thermal conductive films
#marine cable insulation
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목차
- Abstract
- Introduction
- Experimental
- Results and Discussion
- Conclusions
- References
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