Synthesis of thermotropic liquid crystalline polyester copolymers for application of fiber = 열방성 액정 폴리에스터 공중합체의 합성 및 섬유로의 응용

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The liquid crystalline polymer is a super engineered polymer used for precision injection molding and high strengthen fiber due to its unique high strength, high heat and high flow characteristics. In particular, the thermotropic liquid crystalline polymer, which appears to be liquid crystalline characteristics by heat, is capable of producing high strength and high performance fibers at lower cost by utilizing existing facilities. However, the thermotropic liquid crystalline polymer, which is currently developed, is limited to the high heat resistant products for injection molding, so it must be designed to reduce the melting temperature to a suitable level, and to ensure suitable viscosity at the same time. Moreover, the effective removal of the by-products produced during the polymerization process should be controlled to ensure that the fiber is made readily during the melt spinning process. In this study, the polymer composition developed to manufacture high strength fibers by introducing suit-able monomers to reduce expensive HNA content and reduce the melting temperature. It also controlled the re-action condition to effectively remove the by-products and obtained high strength fibers through the heat treatment.
Advisors
Bae, Byeong-Sooresearcher배병수researcher
Description
한국과학기술원 :신소재공학과,
Publisher
한국과학기술원
Issue Date
2018
Identifier
325007
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 신소재공학과, 2018.2,[iv, 71 p. :]

Keywords

Thermotropic polyester▼aLiquid Crystal Polymer▼aSuper fiber▼amelt-spinning▼aLCP; 열방성 폴리에스터▼a액정 고분자▼a슈퍼섬유▼a용융방사▼a열처리

URI
http://hdl.handle.net/10203/264991
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=734358&flag=dissertation
Appears in Collection
MS-Theses_Ph.D.(박사논문)
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