@article{article_893850, title={Using Foamed Polypropylene to Reduce Weight and Injection Molding Cycle Time in Toyota CH-R SUV Door Panel Production}, journal={El-Cezeri}, volume={8}, pages={800–808}, year={2021}, DOI={10.31202/ecjse.893850}, author={Çakır, Sedef and Ayçiçek, Muhammet and Özsoy, Neslihan and Özsoy, Murat and Usta, Mert and Akıncı, Akın}, keywords={cell morphology, chemical foaming agent, injection molding, light weight material, polymer foam}, abstract={In recent years, new technologies that encourage the use of cheaper and less raw materials have emerged in the automotive industry, with the increase in raw material costs as a result of the consumption of natural raw material resources and the occurrence of environmental problems. In this study, it was aimed to lighten the door panel and reduce the injection cycle time by using foam in the door panel production of Toyota CH-R model car. Injection parameters such as barrel temperature, injection speed, injection back pressure, holding pressure and holding time were changed. 1%, 1.5% and 2% by weight chemical foaming agent (CFA) was added to the polypropylene (PP) matrix. Approximately 4% lightening and 5.5 sec/shot injection cycle time reduction was achieved with the use of foaming agents. In addition, it was observed that cell morphologies, mechanical properties and sample weights changed due to changes in parameters and CFA ratio by weight.}, number={2}, publisher={Tayfun UYGUNOĞLU}, organization={TÜBİTAK, Toyota Boshoku TR Co.}