Part quality in injection moulding of shape memory polyurethane
PAMUKKALE UNIVERSITY JOURNAL OF ENGINEERING SCIENCES-PAMUKKALE UNIVERSITESI MUHENDISLIK BILIMLERI DERGISI, cilt.27, sa.4, ss.472-477, 2021 (ESCI, TRDizin)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 27 Sayı: 4
- Basım Tarihi: 2021
- Doi Numarası: 10.5505/pajes.2021.25483
- Dergi Adı: PAMUKKALE UNIVERSITY JOURNAL OF ENGINEERING SCIENCES-PAMUKKALE UNIVERSITESI MUHENDISLIK BILIMLERI DERGISI
- Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), TR DİZİN (ULAKBİM)
- Sayfa Sayıları: ss.472-477
- Anahtar Kelimeler: Shape memory polyurethane, Injection moulding, Permanent shape, Part quality Short shot, Air traps, Weight, RESIDUAL-STRESSES, CLAMPING FORCE, OPTIMIZATION, SHRINKAGE, ANOVA
- Gazi Üniversitesi Adresli: Evet
Özet
In recent years, as a type of smart materials, shape memory polymers (SMPs) are being popular in industrial applications. Thermoplastic shape memory polyurethane (SMPU), which is a type of shape memory polymers, is become interesting because of the properties which are easily moulding and reusability. As commonly in commercial thermoplastic materials, it is expecting that using injection moulding process for shaping permanent shapes of the parts moulded by SMPU. In this study, the part quality was investigated by using short shot; air traps, and part weight in the permanent shape of injection moulded SMPU specimens. The relationship among injection pressure, melt temperature, mould temperature, packing pressure, and time, cooling time and short shod air traps and part weight were inspected experimentally. The design of experiment was prepared by using Taguchi's L27 orthogonal array and experimental data was evaluated by ANOVA. While the effect of injection pressure, and melt temperature on short shot was found to be significant statistically, air traps were affected by injection pressure and mould temperature. It was found that the effective parameters on part weight are injection pressure, melt temperature, mould temperature and packing pressure, respectively.