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Monitoring the Degree of Conversion of Cyclic Butylene Terephthalate using Dielectric Analysis

Archer, E, McIlhagger, AT, McIlhagger, R, Quinn, JP, Mallon, P and Bradaigh, CO (2008) Monitoring the Degree of Conversion of Cyclic Butylene Terephthalate using Dielectric Analysis. POLYMERS & POLYMER COMPOSITES, 16 (6). pp. 365-373. [Journal article]

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Dielectric analysis (DEA) is the most common technique used to determine the state of cure in-process for many thermosetting resins systems such as epoxies, polyesters, polyurethanes, polyimides, silicones, bismaleimides, and phenolics. The objective of this work is to investigate the processing characteristics of cyclic butylene terephthalate (CBT) (supplied by Cyclics Corporation) which polymerises to form a thermoplastic, polybutylene terephthalate (PBT). This paper reports on the interim results of ongoing experimental investigations in which DEA is used to correlate the process cycle to composite structural features and mechanical performance of a complex composite part. Through adjustments in process cycle, the significant processing parameters have been identified which optimise the production of thermoplastic PBT composite parts. The recorded ion viscosity is used to indicate change in material viscosity, conversion rate and process time. These results have been analysed and presented as a guide for correct process control.

Item Type:Journal article
Keywords:Thermoplastic resin; Process monitoring; Dielectric analysis.
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Engineering Composites
ID Code:5741
Deposited By: Dr Edward Archer
Deposited On:13 Jan 2010 09:33
Last Modified:17 Oct 2017 15:39

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