Polyoxymethylene/talc composite: Investigation of warpage, mechanical and thermal properties for thin walled‐injection molding applications

Polyoxymethylene/talc composite: Investigation of warpage, mechanical and thermal properties for thin walled‐injection molding applications

The warpage in injection‐molded thin‐walled components is a research challenge for many years. Polyoxymethylene (POM) composite was prepared with various weight fractions of talc to investigate the reduction in warpage and its effect on mechanical properties such as tensile, compressive, impact, and...

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Bibliographic Details
Published in:Journal of applied polymer science Vol. 139; no. 10
Main Authors: Kailasanathan, Chidambara Kuttalam, Saravanan, Salem Thangavel, Natarajan, Elango, Stalin, Balasubramaniam
Format: Journal Article
Language:English
Published: Hoboken, USA John Wiley & Sons, Inc 10-03-2022
Wiley Subscription Services, Inc
Subjects:
composites
Compressive strength
Crystal structure
Crystallinity
crystallization
Differential scanning calorimetry
Fillers
Fourier transforms
Impact strength
Infrared spectroscopy
Injection molding
Materials science
Mechanical properties
molding
Nucleation
Polymer matrix composites
Polymers
Reduction
Softening
Talc
thermal properties
Thermal stability
Thermodynamic properties
Warpage
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Summary:The warpage in injection‐molded thin‐walled components is a research challenge for many years. Polyoxymethylene (POM) composite was prepared with various weight fractions of talc to investigate the reduction in warpage and its effect on mechanical properties such as tensile, compressive, impact, and thermal properties like Vicat softening point and heat deflection temperature (HDT). The uniform distribution of talc fillers is confirmed in Fourier transform infrared (FTIR) examinations. The talc is found to act as a nucleation agent and affect the crystallinity of POM. It is found from differential scanning calorimetry (DSC) analysis that the percentage of crystallinity is increased with respect to the weight percent of talc fillers and reached a minimum at POM/1 wt% and maximum at POM/3 wt% Talc. The 12% of reduction in warpage is observed in POM/1 wt% Talc polymer composite but it has a 45% increase in impact strength, though it loses the tensile, compressive, and thermal properties by 2%–3%. Meanwhile, the superior mechanical properties are observed in POM/3 wt% Talc polymer composite, but with more warpage than other samples. The present study revealed that the composite with 1% wt loading is suitable to high impact application with lower warpage in thin‐walled molding. The DSC, scanning electron microscopic, X‐ray diffraction, FTIR, HDT, and Vicat softening point results are presented to support the investigations.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.51762