Abstract
The effects of the mold temperature of micro-injection molding on the microstructures and mechanical properties of isotactic polypropylene (PP) gears were studied. The micro-injection molded PP gears present a skin–core type of morphology. The core layer is much thicker than the core and shear layers. The generation of β polymorph in the test samples is easily promoted during the micro-molding process with high shear rate at low temperature, or low shear rate at high temperature. Nanoindentation tests show that the modulus decreases along the flow direction and increases with increasing mold temperature. The highly oriented shear layer has the highest nanoindentation modulus compared with the skin and core layers.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
