An effect of mold surface temperature on final product properties in the injection molding of high-density polyethylene materials
     
Yazarlar (1)
Doç. Dr. İdris KARAGÖZ Yalova Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Polymer Bulletin (Q2)
Dergi ISSN 0170-0839 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce Basım Tarihi 05-2021
Cilt / Sayı / Sayfa 78 / 5 / 2627–2644 DOI 10.1007/s00289-020-03231-2
Makale Linki http://link.springer.com/10.1007/s00289-020-03231-2
Özet
Abstract: Mold surface temperature is one of the most critical process parameters in injection molding. This study aimed to determine the effect of mold surface temperature on plastic parts in injection molding of high-density polyethylene materials. Other process parameters were kept constant, and samples were prepared by changing mold surface temperatures by the injection molding method. The samples’ mechanical tests, thermal tests, and gloss measurements by a gloss meter were performed, and the amount of warpage and collapses was measured by a video measuring system. Microstructures were examined under a scanning electron microscope. It was observed that the mold surface temperature increased the crystallization rate, tensile and bending strength of the materials, decreased the thicknesses of the crystal lamella and impact strength, and had an effect on the melting temperature of the crystal. The microstructure investigations demonstrated that as the mold surface temperature increased, the cavity formation in the structure increased, and fibrillation decreased due to expansion and cooling time. It was determined that the amount of collapse and warpage was affected by the mold surface temperature and that the increase in the mold surface temperature decreased the amount of collapse and increased the amount of warpage and surface gloss. Graphic abstract: [Figure not available: see fulltext.]
Anahtar Kelimeler
Injection | Mold surface temperature | Polyethylene | Surface gloss | Microstructure