Original Article
  • Thermal Decomposition Activation Energy of Liquid Crystalline Epoxy using Cationic Initiator
  • Jung Ye Ji*, Ha Nuel Hyun*, Seung Hyun Cho*†

  • * Department of Organic Materials and Fiber Engineering, Soong-sil University

  • 양이온 개시제를 이용한 열경화성 액정 에폭시의 열분해 활성화에너지
  • 정예지*· 현하늘*· 조승현*†

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Due to the formation of random three dimensional network structure, which cause a lot of scattering of phonons, the thermal conductivity is low when the liquid crystalline epoxy is cured with amine-based curing agent. This problem is solved by using a cationic initiator that can make mesogen groups to be stacked structure. In this experiment, the thermal stability is compared by investigating the activation energy of isothermal decomposition through TGA of an epoxy using an amine-based curing agent and a cationic initiator. As a result, the energy of the activation of the epoxy using a cationic initiator is high. Compared with the previous experiments, the thermal stability is similar to the thermal conductivity.


기존 아민계 경화제를 사용해 액정 에폭시를 경화할 경우, 랜덤 한 3차원 네트워크 구조의 생성으로 인해 phonon의 산란이 많이 발생하기 때문에 열전도도가 낮게 나타났다. 이러한 문제를 mesogen그룹을 적층된 구조로 형성하는 양이온 개시제를 이용하여 해결하기 위해 본 연구에서는 아민계 경화제와 양이온 개시제를 사용한 에폭시의 TGA분석(Thermogravimetric Analysis)을 통해 등온 열분해 활성화에너지를 조사하여 열적안정성을 비교하였다. 양이온 개시제를 이용한 에폭시의 경우 활성화가 에너지가 높았으며 기존 실험과 비교했을 때, 열적안정성은 열전도도와 비슷한 양상을 보인다


Keywords: 열경화성 액정에폭시(Liquid Crystalline Thermosetting Epoxy), 열분해 활성화 에너지(Activation Energy for Thermal Decomposition), 양이온 개시제(Cationic Initiator), 열적안정성(Thermal Stability)

This Article

Correspondence to

  • Seung Hyun Cho
  • * Department of Organic Materials and Fiber Engineering, Soong-sil University

  • E-mail: scho@ssu.ac.kr