Odun plastik kompozit malzemelerin termal ve ısı iletkenliği özelikleri üzerine sepiolit mineralinin etkisi
Year 2018,
Volume: 19 Issue: 2, 205 - 209, 21.07.2018
Ferhat Özdemir
,
Ayşegül Çot
Hakkı Alma
Abstract
Bu çalışmada amaç, polipropilen esaslı odun plastik kompozit (OPK) malzeme üretiminde kullanılan sepiolit mineralinin termal özellikler ve ısı iletkenliği üzerine etkisinin araştırılması olacaktır. Çift vidalı ekstruder ile odun unu, polipropilen ve sepiolit minerali karışımından elde edilen peletler, öğütülmüş ve presleme işlemi yapılarak OPK levhalar üretilmiştir. Üretilen levhaların ısı iletkenliği özelliklerinin (ASTM C 1113-09) yanı sıra Termogravimetrik Analiz (TGA) ve Diferansiyel Taramalı Kalorimetri (DSC) gibi termal özellikleri belirlenmiştir. OPK malzemelerde yangın geciktirici olarak kullanılan sepiolit mineralinin eklenme miktarının artması ile termal ve ısı iletkenliği özelliklerinin geliştiği, kristalizasyon derecesinin ise azaldığı belirlenmiştir.
References
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KSÜ, Fen Bilimleri Enstitüsü, Kahramanmaraş.
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Effect of sepiolit mineral on thermal properties and thermal conductivity of wood plastic composite materials
Year 2018,
Volume: 19 Issue: 2, 205 - 209, 21.07.2018
Ferhat Özdemir
,
Ayşegül Çot
Hakkı Alma
Abstract
The aim of this study is to investigate the effect of sepiolite mineral used in the production of polypropylene based wood plastic composite (OPK) materials on thermal properties and thermal conductivity. The pellets obtained from the mixture of wood flour, polypropylene and sepiolite minerals with double-screw extruder were milled and pressed to produce OPK boards. Thermal properties such as Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) as well as the thermal conductivity properties of the produced boards (ASTM C 1113-09) have been determined. It has been determined that the addition of the sepiolite mineral used as fire retardant in OPK materials increases the thermal and thermal conductivity properties, while the crystallization degree decreases.
References
- Altuntaş, E., Salan, T., Alma, M.H., 2016. Farklı bor bileşik kullanılarak mdf-aype odun plastik kompozitlerin yangına dayanıklılığının araştırılması. Kahramanmaras Sutcu Imam University Journal of Engineering Sciences 19(3): 19-23.
- Alvarez, A., 1984. Sepiolite: properties and uses. Developments in sedimentology, 37, 253-287.
- Ashori, A., 2008. Wood-plastic composites as promising green-composites for automotive industries. Bioresource Technology, 99: 4661-4667.
- ASTM C 1113-09, 2004. Standard Test Method for Thermal Conductivity of Refractories by Hot Wire (Platinum resistance thermometer technique), Annual Book of ASTM Standards; Vol. 15.01, American Society for Testing Materials, West Conshohocken: ASTM International.
- ASTM D 3418-08, 2008. ASTM International, Standard Test Method for Transition Temperatures and Enthalpies of Fusion and Crystallization of Polymers by Differential Scanning Calorimetry, West Conshohocken, PA.
- ASTM D 618, 2008. ASTM International, Standard Practice for Conditioning Plastics for Testing, West Conshohocken, PA.
- Birinci, E., 2011. Asitlendirilmiş Sarıçam (Pinus Sylvestris L.) odun unu ile yeni odun plastik kompozitlerinin üretimi. Yüksek Lisans Tezi,
KSÜ, Fen Bilimleri Enstitüsü, Kahramanmaraş.
- Gu, H.M., Zink-Sharp, A., 2005. Geometric model for softwood transverse thermal conductivity. Part 1. Wood and Fiber Science, 37(4): 699-711.
- Işık, E.C., Beyarslan, M., 2016. Türkmentokat-Karatepe (Eskişehir) Bölgesi yumrulu sepiyolitlerinin (Lületaşı) mineralojik özellikleri ve karakterizasyonu. Fırat Üniv. Müh. Bil. Dergisi, 28(2): 73-82.
- Jones, B. F, Galan, E., 1988. Hydrous phyllosilicates (exclusive of micas). In: S.W.Bailey (Ed.), Sepiolite and palygorskite, reviews in mineralogy. Mineralogical Society of America, pp.631-667.
- Kamke, A.F., Zylkowoski, S.C., 1989. Effects of wood-based panel characterisitics on thermal conductivity. Forest Products Journal, 39(5): 39-24.
- Karakuş, K., 2008. Üniversitemizdeki polietilen ve polipropilen atıkların polimer kompozit üretiminde değerlendirilmesi. Yüksek Lisans Tezi, KSÜ Fen Bilimleri Enstitüsü, Kahramanmaraş.
- Lewis, W. C., 1967. Thermal conductivitiy of wood-base fiber and particle panel materials’ research puper FBL 77, USDA. Forest Service Forest Products Lab., Madison, Wis.
- Nagy, B., Bradley, W.F., 1955. The structural scheme of sepiolite. American Mineralogist, 40(9-10): 885-892.
- Rodrugez, V., Lopez, M.A, Gonzales, J.D., Banares Munoz, M.A., 1994. Acid activation of a Spanish sepiolite, Physicochemical charakterizatio, free silica content and surface area of the solids obtained. Clay Minerals, 29, 361–367.
- Sabah, E., Saglam, H., Kara, M., Celik, M.S., 1997. Uptake of cationic surfactants by a clay absorbent: sepiolite. Proceedings of Fifth
Southern Hemisphere Meeting on Mineral Technology, Argentina, 6-9 May, pp.277-280,
- Sain, M., Park, S.H., Suhara, F., Law, S., 2004. Flame reterdent and mechanical properties of natural fibre-PP composites containing magnesium hydroxide. Polymer Degradation and Stability, 83, 363-367.
- Sanyal, S.N., Jain, V.K., Dubey, Y.M., Verma, P.C., 1991. A preliminary note on relationship between dielectric properties and thermal conductivity of wood. Journal of Indian Academy of Wood Science, 22(2), 45-49.
- Simonsen, J., 1995. The mechanical properties of wood fiber plastic composites: theoretical vs. experimental. In: Proceedings of wood fiber plastic composites, Forest Products Society, Proceedings, 1-3 May, No. 7293, pp. 47-55.
- Tutuş, A,, Kurt, R., Alma, M.H., Meriç, H., 2010. Sarıçam odununun kimyasal analizi ve termal özellikleri. Artvin Çoruh Üniversitesi, III. Ulusal Karadeniz Ormancılık Kongresi, 20-22 Mayıs, Artvin s. 1845-1851.
- Xu, F.J., Sun, R., Sun, P., Fowler, M.S., 2006. Baird comparative study of organosolv lignin’s from wheat straw. Ind. Crops Prod., 23,180-193.