Abstract
Improving the properties of plastics has always been a curious research topic in the scientific and industrial field, aiming to replace engineering plastics with cost-effective plastics for engineering applications. Looking at the past, there are studies to improve the mechanical properties of the plastics used and to add various properties. The usage areas of BN, which has an important potential today, such as high thermal conductivity, electrical insulation, chemical stability and easy workability, have found a place in many industrial applications as a result of recent researches. In addition to these, it is known that it is used as a process aid in the polymer industry. The main task of the process aids is to reduce the shear stress of the melt by covering the die mouth during extrusion due to low surface tensions. In this way, it reduces the pressure in the mold mouth and eliminates surface defects called melt fractures. In addition to this feature, the use of hexagonal boron nitride (hBN) as an additive in the preparation of masterbacths and the production of a new material and its effect on the processability of lineer low densty polyethylene were investigated. Accordingly, in this study, a masterbatch form was prepared with hBN-LLDPE, and then analytical and spectroscopic characterization of this material was carried out. As a result of the analyzes made, it was seen that hBN is a good processing aid and the masterbatch formed with 5% additive exhibited the best mechanical properties.
Keywords
References
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- Referans2 A.V. Ramamurthy, Wall Slip in Viscous Fluids and Influence of Materials of Construction, Journal of Rheology, 30, (1986), 337.
- Referans3 Rosenbaum, E., S.G. HaEikiriakos, and C.W. Stewart, Flow implications in the processing of Teflon@ resins, Intern. Polym. Prcc. X, 20(1995), 212.
- Referans4 Hubáček, M., Sato, T., & Ueki, M,. Copper-boron nitride interaction in hot-pressed ceramics, Journal of materials research, 12(1), (1997), 113-118.
- Referans5 Kazatchkov, I. B., Yip, F., Hatzikiriakos, S. G. The effect of boron nitride on the rheology and processing of polyolefins. Rheologica acta, 39(6), (2000), 583-594.
- Referans6 Gulmine J, Janissek P, Heise H, Akcelrud L, Polyethylene characterization by FTIR, Polymer Testing 21(5) (2002) 557–563.
- Referans7 Wu, Jingli, et al. "TG/FTIR analysis on co-pyrolysis behavior of PE, PVC and PS." Waste management 34.3 (2014): 676-682.
- Referans8 Majewsky, Marius, et al., Determination of microplastic polyethylene (PE) and polypropylene (PP) in environmental samples using thermal analysis (TGA-DSC), Science of the Total Environment 568 (2016), 507-511.
- Referans9 Reyes-Labarta, J. A., M. M. Olaya, and A. Marcilla, DSC and TGA study of the transitions involved in the thermal treatment of binary mixtures of PE and EVA copolymer with a crosslinking agent, Polymer 47.24 (2006), 8194-8202.
- Referans10 J.-P Gibert, J. Lopez-Cuesta, A Crespy, Anne Bergeret. Study of the degradation of fire-retarded PP/PE copolymers using DTA/TGA coupled with FTIR. Polymer Degradation and Stability, 67 (3), (2000), 437-447.
- Referans1 1 Wong, AC-Y., and F. Lam., Study of selected thermal characteristics of polypropylene/polyethylene binary blends using DSC and TGA, Polymer testing 21.6 (2002), 691-696.
- Referans12 Arunvisut, Supong, Sutthipat Phummanee, and Anongnat Somwangthanaroj, Effect of clay on mechanical and gas barrier properties of blown film LDPE/clay nanocomposites, Journal of applied polymer science 106.4 (2007), 2210-2217.
Abstract
Plastiklerin özelliklerinin iyileştirilmesi, mühendislik uygulamaları için mühendislik plastiklerini uygun maliyetli plastiklerle değiştirmeyi amaçlayan bilimsel ve endüstriyel alanda her zaman merak edilen bir araştırma konusu olmuştur. Geçmiş dönemlere bakıldığında, kullanılan plastiklerin mekanik özelliklerini geliştirmek ve çeşitli özellikleri eklemek için çalışmalar bulunmaktadır. Günümüzde önemli bir potansiyele sahip olan refrakter özelliği yüksek ısı iletkenliği, elektriksel yalıtkanlık, kimyasal kararlılık ve kolay işlenebilirlik gibi üstün özellikleri olan BN’ nin kullanım alanları, son zamanlarda yapılan araştırmalar sonucunda pek çok sanayi uygulamasında kendine yer bulmuştur. Bunların yanı sıra polimer sektöründe de proses yardımcısı olarak kullanıldığı bilinmektedir. Proses yardımcılarının esas görevi düşük yüzey gerilimlerinden dolayı ekstrüzyon sırasında kalıp ağzını kaplayarak eriyiğin kayma gerilimini azaltmaktadır. Bu sayede kalıp ağzında meydana gelen basıncı azaltarak, eriyik kırığı olarak adlandırılan yüzey kusurlarını ortadan kaldırmaktadır. Bu özelliğinin yanı sıra hegzagonal bor nitrür (hBN), master bacthlerinin hazırlanmasında katkı maddesi olarak kullanımı ile yeni bir malzeme üretimi ile polietilenin işlenebilirliğine olan etkisi araştırılmıştır. Bunlara bağlı olarak bu çalışmada önce hBN’ doğrusal düşük yoğunluklu polietilen ile masterbatch formu hazırlandı daha sonra bu malzemenin analitik ve spektroskopik karakterizasyonu gerçekleştirilmiştir. Yapılan analizler sonucu hBN’nin iyi bir işlem yardımcısı olduğu %5’lik katkıyla oluşturulan masterbatchin en iyi mekanik özellikler sergilediği görülmüştür.
Keywords
References
- Referans1 C.J.S. Petrie and M.M. Denn, Instabilities in polymer processing, American Institute of Chemical Engineers, 22, (1976), 209.
- Referans2 A.V. Ramamurthy, Wall Slip in Viscous Fluids and Influence of Materials of Construction, Journal of Rheology, 30, (1986), 337.
- Referans3 Rosenbaum, E., S.G. HaEikiriakos, and C.W. Stewart, Flow implications in the processing of Teflon@ resins, Intern. Polym. Prcc. X, 20(1995), 212.
- Referans4 Hubáček, M., Sato, T., & Ueki, M,. Copper-boron nitride interaction in hot-pressed ceramics, Journal of materials research, 12(1), (1997), 113-118.
- Referans5 Kazatchkov, I. B., Yip, F., Hatzikiriakos, S. G. The effect of boron nitride on the rheology and processing of polyolefins. Rheologica acta, 39(6), (2000), 583-594.
- Referans6 Gulmine J, Janissek P, Heise H, Akcelrud L, Polyethylene characterization by FTIR, Polymer Testing 21(5) (2002) 557–563.
- Referans7 Wu, Jingli, et al. "TG/FTIR analysis on co-pyrolysis behavior of PE, PVC and PS." Waste management 34.3 (2014): 676-682.
- Referans8 Majewsky, Marius, et al., Determination of microplastic polyethylene (PE) and polypropylene (PP) in environmental samples using thermal analysis (TGA-DSC), Science of the Total Environment 568 (2016), 507-511.
- Referans9 Reyes-Labarta, J. A., M. M. Olaya, and A. Marcilla, DSC and TGA study of the transitions involved in the thermal treatment of binary mixtures of PE and EVA copolymer with a crosslinking agent, Polymer 47.24 (2006), 8194-8202.
- Referans10 J.-P Gibert, J. Lopez-Cuesta, A Crespy, Anne Bergeret. Study of the degradation of fire-retarded PP/PE copolymers using DTA/TGA coupled with FTIR. Polymer Degradation and Stability, 67 (3), (2000), 437-447.
- Referans1 1 Wong, AC-Y., and F. Lam., Study of selected thermal characteristics of polypropylene/polyethylene binary blends using DSC and TGA, Polymer testing 21.6 (2002), 691-696.
- Referans12 Arunvisut, Supong, Sutthipat Phummanee, and Anongnat Somwangthanaroj, Effect of clay on mechanical and gas barrier properties of blown film LDPE/clay nanocomposites, Journal of applied polymer science 106.4 (2007), 2210-2217.
Details
| Primary Language | English |
|---|---|
| Subjects | Material Production Technologies |
| Journal Section | Materials Science and Engineering |
| Authors | |
| Publication Date | December 13, 2022 |
| Submission Date | August 19, 2022 |
| Published in Issue | Year 2022 |