Thermal and structural analysis of ultrasonic-welded PC/ABS blend for automobile applications

PC/ABS thermoplastic blends are widely employed in manufacturing sectors, as it yields good mechanical behavior when subjected to dynamic loading conditions. While investigating the fundamental nature of PC/ABS blends, ultrasonic welding process appears to suit their joining as compared to other con...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2017-03, Vol.127 (3), p.1995-2003
Main Authors: Chinnadurai, T., Arungalai Vendan, S.
Format: Article
Language:English
Subjects:
ABS resins
Activation energy
Analytical Chemistry
Automobiles
Automotive components
Calorimetry
Chemistry
Chemistry and Materials Science
Dynamic loads
Glass transition temperature
Heating rate
Inorganic Chemistry
Loads (forces)
Manufacturing industries
Measurement Science and Instrumentation
Mechanical properties
Physical Chemistry
Polymer blends
Polymer Sciences
Structural analysis
Thermal degradation
Thermal properties
Thermodynamic properties
Thermoplastics
Ultrasonic welding
Welding
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Summary:PC/ABS thermoplastic blends are widely employed in manufacturing sectors, as it yields good mechanical behavior when subjected to dynamic loading conditions. While investigating the fundamental nature of PC/ABS blends, ultrasonic welding process appears to suit their joining as compared to other conventional techniques. This paper focuses on PC/ABS welding using ultrasonic and the subsequent investigation from the insight of thermal science. It is imperative for the materials to retain key properties after subjecting it to welding. Examinations to evaluate these properties through DSC reveal a lower onset temperature change and a small variation of glass transition temperature, respectively, for parts which indicate minimal changes in thermal properties in welded and non-welded specimens. Apparent activation energies determined from TG data are practically independent of heating rates, which suggests that the most important process in the degradation of these materials corresponds to ABS. Those mixtures with high PC content show a clear increase in apparent activation energies with heating rate, suggesting that the thermal degradation mechanism of these samples is composed of several complex processes, each predominant during different stages of the overall process. SEM is used to investigate the structural morphology of the welded parts.
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-016-5748-4