할로이사이트 충전 에폭시 수지 계의 특성

이정우; 김대수; Jeong Woo Lee; Dae Su Kim

Polymer(Korea), Vol.46, No.3, 361-368, May, 2022

DOI10.7317/pk.2022.46.3.361 Export Citation

할로이사이트 충전 에폭시 수지 계의 특성

Characteristics of a Halloysite Filled Epoxy Resin System

이정우, 김대수 ^†

충북대학교 공과대학 화학공학과

Jeong Woo Lee, and Dae Su Kim^†

Department of Chemical Engineering, Chungbuk National University, 1 Chungdaero, Seowongu, Cheongju, Chungbuk 28644, Korea

E-mail:

초록

본 연구에서는 순수한 할로이사이트 나노튜브(HNT)와 NaOH 수용액(0.01 M 또는 5 M)으로 처리한 HNT를 나노충전제로 사용하였다. 전형적인 diglycidyl ether of bisphenol A(DGEBA) 에폭시 수지에 0-4 phr의 HNT를 혼 합하고 무수물 경화제와 이미다졸 기반 촉매로 경화하여 에폭시-HNT 나노복합재를 제조하였다. 에폭시-HNT 나노 복합재의 기계적 특성은 충격시험기 및 만능재료시험기로 측정하였고 경화 거동 및 열적 특성은 DSC로 조사하였 다. 0.01 M NaOH 수용액으로 처리한 HNT가 에폭시-HNT 나노복합재의 기계적 특성 향상에 가장 효과적이었다. HNT 함량이 증가함에 따라 에폭시 수지 계의 DSC 발열곡선의 피크 온도는 낮아졌으나 발열반응열은 거의 변화가 없었다. 0.01 M NaOH 수용액으로 처리한 HNT를 2 phr 함유한 에폭시-HNT 나노복합재가 가장 우수한 기계적 특성 및 높은 유리전이온도를 보였다.

In this study, neat halloysite nanotube (HNT) and HNT treated with an aqueous NaOH solution (0.01 M or 5 M) were used as nanofillers. A typical diglycidyl ether of bisphenol A (DGEBA) epoxy resin was mixed with 0-4 phr HNT then an anhydride curing agent and an imidazole-based catalyst were used to prepare epoxy-HNT nanocomposites by curing. Mechanical properties of the epoxy-HNT nanocomposites were measured by impact tester and universal testing machine and curing behavior and thermal properties of them were investigated by DSC. HNT treated with 0.01 M aqueous NaOH solution was most effective in improving the mechanical properties of the epoxy-HNT nanocomposites. With increasing HNT content, the peak temperature of the DSC exothermic curve decreased but the exothermic reaction heat almost unchanged. The epoxy-HNT nanocomposite containing 2 phr of HNT treated with 0.01 M NaOH aqueous solution showed the best mechanical properties and the highest glass transition temperature.

Keywords:epoxy;halloysite nanotube;nanocomposites;mechanical properties;thermal properties

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Zeng S, Reyes C, Liu J, Rodgers PA, Wentworth SH, Sun L, Polymer, 55, 6519 (2014)
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Longhi M, Zini LP, Kunst SR, Zattera A, Polym. Polym. Compos., 25, 593 (2017)
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Ferrari PC, Araujo FF, Pianaro SA, Cerâmica, 63, 423 (2017)
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Mauri AN, Galego N, Riccardi CC, Williams RJJ, Macromolecules, 30, 1616 (1997)
Jouyandeh M, Karami Z, Jazani OM, Formela K, Paran SMR, Jannesari A, Saeb MR, Prog. Org. Coat., 126, 129 (2019)
Liu M, Guo B, Du M, Cai X, Jia D, Nanotechnology, 18, 455703 (2007)

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