Design of long-chain branched copolyesters and manufacture as well as physical properties of their extrusion films

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Title:	Design of long-chain branched copolyesters and manufacture as well as physical properties of their extrusion films
Authors:	Lai, CC (Lai, Chiu-Chun) Yu, CT (Yu, Chun-Ta) Chen, MH (Chen, Meng-Hsin) Chen, HL (Chen, Hsin-Lung) Wang, FM (Wang, Fu-Ming) Lin, CH (Lin, Chih-Hsiang) Liu, LC (Liu, Lung-Chang) Chen, CM (Chen, Chien-Ming)
Contributors:	紡織工程學系
Keywords:	LIQUID-CRYSTALLINE POLYMER IN-SITU COMPOSITES MECHANICAL-PROPERTIES LCP TEMPERATURE ORIENTATION SUBSTRATE RHEOLOGY BEHAVIOR
Date:	2018-01
Issue Date:	2019-01-23 10:44:32 (UTC+8)
Abstract:	A long-chain branched copolyester (i.e. p-hydroxybenzoic acid (HBA)/2-hydroxy-6-naphthoic acid (HNA)/1,1,1-tris(4-hydroxyphenyl)ethane (THPE) copolyester) and its extrusion film with superior physical properties to commercial Ticona A950 and Vecstar CTZ have been manufactured by the design of appropriate prescriptions, T-Die extrusion, and thermal treatment of crystal transformation. In order to investigate the fabricating feasibility for flexible copper clad laminate (FCCL) of fourth/fifth generation long-term evolution (4G/5G LTE), we have also agglutinated lab-made copolyester extrusion film with the copper foil by hot compression. Experimental results manifest that lab-made copolyester extrusion film is a highly potential FCCL substrate of 4G/5G LTE because its thickness, dielectric constant (D-k), dielectric loss (D-f), hygroscopicity, yellowness index (YI), antistatic capability, flammability, melting temperature (T-m), coefficient of thermal expansion (CTE), and peel strength to copper foil are 50 mu m, 2.90, 0.00140, 0.04%, 2.7, 6.5 x 10(9) Omega/square UL-94 V0, 305 degrees C, 24.8 ppm/degrees C, and 29.9 lb/in, respectively.
Appears in Collections:	[Department of Textile Engineering ] journal articles

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