Öz
In this study, the effect of moisture content and density of panel on some physical and mechanical properties of fiberboard was investigated. The effect of moisture and density differences on some properties of fiberboard were aimed to be revealed. The test samples were obtained from fiberboards which were divided into three different density (0.590 g/cm3, 630 g/cm3 and 0.680 g/cm3) and moisture contents (6%, 9% and 12%) groups. Within the scope of the study, physical properties such as water absorption and thickness swelling and mechanical properties such as bending strength, modulus of elasticity, internal bond strength, Janka hardness and screw holding capacity were determined. The physical and mechanical properties of the boards with different moisture and density values differed significantly. For instance, the internal bond strengths were determined as 0.34 N/mm2, 0.39 N/mm2 and 0.62 N/mm2 in the low, medium and high density groups, respectively. Respective values for moisture content groups were found 0.52 N/mm2, 0.45 N/mm2 and 0.38 N/mm2, respectively. Furthermore, the screw holding capacity which is important strength for fiberboard were determined as 15.3 N/mm2, 18.8 N/mm2 and 25.3 N/mm2 in the low, medium and high density groups, respectively. And respective values for moisture content groups were found as 19.8 N/mm2, 20.1 N/mm2 and 19.4 N/mm2, respectively. In the samples belonging to the same moisture group, high mechanical properties at low moisture content and low mechanical properties at high moisture content were obtained. Research results revealed that the mechanical properties increased in parallel with the increase in density. Physical and mechanical properties of MDF boards change as the board density increases. Generally, as the board density increased, all mechanical properties increased. However, with the increase in moisture percentage, the mechanical properties of the boards decreased.
Anahtar Kelimeler
Destekleyen Kurum
The Scientific Research Projects Unit of Kahramanmaras Sutcu Imam University
Proje Numarası
2017/1-59YLS
Teşekkür
The authors would like tı express their gratitude to the KSU-BAP (The Scientific Research Projects Unit of Kahramanmaras Sütcü Imam University) No: 2017/1-59YLS for its financial support.
Kaynakça
- Akgul, M. Camlibel, O., 2008. Manufacture of medium density fiberboard (MDF) panels from rhododendron (R. ponticum L.) biomass. Building and Environment, 43(4): 438-443. https://doi.org/10.1016/j.buildenv.2007.01.003
- Ashori, A., Nourbakhsh, A., Karegarfard, A., 2009. Properties of medium density fiberboard based on bagasse fibers. Journal of Composite Materials, 43(18): 1927-1934. DOI: 10.1177/0021998309341099
- Ayrilmis, N., 2002. Effect of tree species on some mechanical properties of MDF. İstanbul Üniversitesi Orman Fakültesi Dergisi, 1(52): 125-146.
- Ayrilmis, N., 2007. Effect of panel density on dimensional stability of medium and high-density fiberboards. Journal of Materials Science, 42(20): 8551-8557. DOI:10.1007/s10853-007-1782-8
- Ayrilmis, N., Laufenberg, T.L., Winandy, J.E., 2009. Dimensional stability and creep behavior of heat-treated exterior medium density fiberboard. European Journal of Wood and Wood Products, 67(3): 287-295. DOI 10.1007/s00107-009-0311-7
- Bozkurt, Y., Göker, Y., 1996. Fiziksel ve Mekanik Ağaç Teknolojisi, İstanbul Üniversitesi Orman Fakültesi Yayınları, No: 3944, Istanbul.
- Ganev, S., Gendron, G., Cloutier, A., Beauregard, R., 2007. Mechanical properties of MDF as a function of density and moisture content. Wood and Fiber Science, 37(2): 314-326.
- Istek, A., Mugla, K., Yazici, H., 2015. Mobilya üretiminde kullanılan ticari mdf levhaların özellikleri. Selçuk-Teknik Dergisi, 14(2): 333-343.
- Joščák, P., N., Langová, N. Tvrdovský, M., 2014. Withdrawal resistance of wood screw in wood-based materials. Forestry and Wood Technology, 87: 90-96.
- Kantay, R. 1993. Kereste Kurutma ve Buharlama. Ormancılık Eğitim ve Kültür Vakfı Yayın No: 6, Istanbul, Turkey.
- Kollmann, F., Cote, W.A., 1968. Principles of Wood Science and Technology, Springer Verlag.
- Li, X., Li, Y., Zhong, Z., Wang, D., Ratto, J.A., Sheng, K., Sun, X.S., 2009. Mechanical and water soaking properties of medium density fiberboard with wood fiber and soybean protein adhesive. Bioresource Technology, 100(14): 3556-3562. https://doi.org/10.1016/j.biortech.2009.02.048
- Ors, Y., Keskin, H., 2001. Ağaç Malzeme Bilgisi. Gazi Üniversitesi Ders Kitabı, Ankara.
- Ozdemir, T., Hiziroglu, S., Malkocoglu, A., 2009. Influence of relative humidity on surface quality and adhesion strength of coated medium density fiberboard (MDF) panels. Materials&Design, 30(7): 2543-2546. DOI: 10.1016/j.matdes.2008.09.036
- Ozen, R., 1975. Lif levhalarının fiziksel ve mekanik özellikleri ve bunlara tesir eden faktörler. İstanbul Üniversitesi Orman Fakültesi Dergisi, 25(2): 49-84.
- Ozlusoylu, S., 2018. Effects of silane and paraffin used on properties in fiber board production. Master's Thesis, Bartin University, Institute of Science and Technology, Bartin.
- Park, B.D., Kim, Y.S., Riedl, B., 2001. Effect of wood-fiber characteristics on medium density fiberboard (MDF) performance. Journal of the Korean Wood Science and Technology, 29(3): 27-35.
- Rashid, M.M., Das, A.K., Shams, M.I., Biswas, S.K., 2014. Physical and mechanical properties of medium density fiber board (MDF) fabricated from banana plant (Musa sapientum) stem and midrib. Journal of the Indian Academy of Wood Science, 11(1): 1-4. DOI 10.1007/s13196-014-0109-z
- TS EN 2479, 2005. Wood-determination of static hardness. TSE, Ankara.
- TS EN 310, 1999. Wood-based panels-determination of modulus of elasticity in bending and of bending strengt. TSE, Ankara.
- TS EN 317, 1999. Particleboards and fibreboards-determination of swelling in thickness after immersion in water. TSE, Ankara.
- TS EN 319, 1999. Particleboards and fibreboards- determination of tensile strength perpendicular to the plane of the board. TSE, Ankara.
- TS EN 322, 1999. Wood-based panels- determination of moisture content. TSE, Ankara.
- TS EN 323, 1999. Wood-based panels- determination of density. TSE, Ankara.
- TS EN 13446, 2005. Wood-based panels- determination of withdrawal capasity of fasteners. TSE, Ankara.
- Vassiliou, V., Barboutis, I., 2005. Screw withdrawal capacity used in the eccentric joints of cabinet furniture connectors in particleboard and MDF. Journal of Wood Science, 51(6): 572-576. DOI 10.1007/s10086-005-0708-9
- Zhou, J., Zhou, H., Hu, C., Hu, S., 2013. Measurements of thermal and dielectric properties of medium density fiberboard with different moisture content. BioResources, 8(3): 4185-4192.
Öz
Bu çalışmada, rutubet ve yoğunluk farklılıklarının, liflevhanın bazı fiziksel ve mekanik özellikleri üzerine etkisinin ortaya konması amaçlanmıştır. Araştırmada kullanılan test numuneleri, üç farklı yoğunluk grubuna (0.590 g/cm3, 0.630 g/cm3 ve 0.680 g/cm3) ve üç farklı rutubet derecesine (%6, %9 ve %12) ayrılan lif levhalardan elde edilmiştir. Çalışma kapsamında, su alma ve kalınlığına şişme gibi fiziksel özellikler ile eğilme direnci, eğilmede elastikiyet modülü, iç yapışma kuvveti, Janka sertlik ve vida tutma kapasitesi gibi mekanik özellikler belirlenmiştir. Farklı rutubet ve yoğunluk değerlerine sahip levhaların fiziksel ve mekanik özellikleri önemli ölçüde farklılık göstermiştir. Levhaların yüzeye dik çekme direnci düşük yoğunluk grubunda 0.34 N/mm2, orta yoğunluk grubunda 0.39 N/mm2, yüksek yoğunluk grubunda 0.62 N/mm2 olarak tespit edilmiştir. Rutubet miktarlarına göre kıyaslandığında ise düşük rutubetten yüksek rutubete doğru sırası ile 0.52 N/mm2, 0.45 N/mm2 ve 0.38 N/mm2 bulunmuştur. Yine, MDF için önemli dirençlerden vida tutma direnci düşük yoğunluk grubunda 15.3 N/mm2, orta yoğunluk grubunda 18.8 N/mm2 ve yüksek yoğunluk grubunda 25.3 N/mm2 olarak belirlenmiştir. Aynı şekilde, rutubet grupları için de düşük rutubette 19.8 N/mm2, orta rutubette 20.1 N/mm2 ve yüksek rutubette 19.4 N/mm2 değerleri elde edilmiştir. Yine, MDF için önemli dirençlerden vida tutma direnci testlerinde yoğunluk grupları için değerler, LD: 15.3, MD: 18.8 ve HD: 25.3 N/mm2 olarak ölçüldü. Aynı şekilde, rutubet grupları için de, LM: 19.8, MM: 20.1 ve HM: 19.4 N/mm2 değerleri elde edilmiştir. Aynı rutubet grubuna ait numunelerde, düşük nem içeriğinde yüksek mekanik özellikler ve yüksek nem içeriğinde düşük mekanik özellikler elde edilmiştir. Araştırma sonuçları, mekanik özelliklerin yoğunluktaki artışa paralel olarak arttığını ortaya koymuştur. MDF levhaların, fiziksel ve mekanik özellikleri levha yoğunluğu arttıkça değişmektedir. Genel olarak, levha yoğunluğu arttıkça, tüm mekanik özellikler artmıştır. Fakat, rutubet yüzdesindeki artışla levhaların mekanik özellikleri azalmıştır.
Anahtar Kelimeler
Proje Numarası
2017/1-59YLS
Kaynakça
- Akgul, M. Camlibel, O., 2008. Manufacture of medium density fiberboard (MDF) panels from rhododendron (R. ponticum L.) biomass. Building and Environment, 43(4): 438-443. https://doi.org/10.1016/j.buildenv.2007.01.003
- Ashori, A., Nourbakhsh, A., Karegarfard, A., 2009. Properties of medium density fiberboard based on bagasse fibers. Journal of Composite Materials, 43(18): 1927-1934. DOI: 10.1177/0021998309341099
- Ayrilmis, N., 2002. Effect of tree species on some mechanical properties of MDF. İstanbul Üniversitesi Orman Fakültesi Dergisi, 1(52): 125-146.
- Ayrilmis, N., 2007. Effect of panel density on dimensional stability of medium and high-density fiberboards. Journal of Materials Science, 42(20): 8551-8557. DOI:10.1007/s10853-007-1782-8
- Ayrilmis, N., Laufenberg, T.L., Winandy, J.E., 2009. Dimensional stability and creep behavior of heat-treated exterior medium density fiberboard. European Journal of Wood and Wood Products, 67(3): 287-295. DOI 10.1007/s00107-009-0311-7
- Bozkurt, Y., Göker, Y., 1996. Fiziksel ve Mekanik Ağaç Teknolojisi, İstanbul Üniversitesi Orman Fakültesi Yayınları, No: 3944, Istanbul.
- Ganev, S., Gendron, G., Cloutier, A., Beauregard, R., 2007. Mechanical properties of MDF as a function of density and moisture content. Wood and Fiber Science, 37(2): 314-326.
- Istek, A., Mugla, K., Yazici, H., 2015. Mobilya üretiminde kullanılan ticari mdf levhaların özellikleri. Selçuk-Teknik Dergisi, 14(2): 333-343.
- Joščák, P., N., Langová, N. Tvrdovský, M., 2014. Withdrawal resistance of wood screw in wood-based materials. Forestry and Wood Technology, 87: 90-96.
- Kantay, R. 1993. Kereste Kurutma ve Buharlama. Ormancılık Eğitim ve Kültür Vakfı Yayın No: 6, Istanbul, Turkey.
- Kollmann, F., Cote, W.A., 1968. Principles of Wood Science and Technology, Springer Verlag.
- Li, X., Li, Y., Zhong, Z., Wang, D., Ratto, J.A., Sheng, K., Sun, X.S., 2009. Mechanical and water soaking properties of medium density fiberboard with wood fiber and soybean protein adhesive. Bioresource Technology, 100(14): 3556-3562. https://doi.org/10.1016/j.biortech.2009.02.048
- Ors, Y., Keskin, H., 2001. Ağaç Malzeme Bilgisi. Gazi Üniversitesi Ders Kitabı, Ankara.
- Ozdemir, T., Hiziroglu, S., Malkocoglu, A., 2009. Influence of relative humidity on surface quality and adhesion strength of coated medium density fiberboard (MDF) panels. Materials&Design, 30(7): 2543-2546. DOI: 10.1016/j.matdes.2008.09.036
- Ozen, R., 1975. Lif levhalarının fiziksel ve mekanik özellikleri ve bunlara tesir eden faktörler. İstanbul Üniversitesi Orman Fakültesi Dergisi, 25(2): 49-84.
- Ozlusoylu, S., 2018. Effects of silane and paraffin used on properties in fiber board production. Master's Thesis, Bartin University, Institute of Science and Technology, Bartin.
- Park, B.D., Kim, Y.S., Riedl, B., 2001. Effect of wood-fiber characteristics on medium density fiberboard (MDF) performance. Journal of the Korean Wood Science and Technology, 29(3): 27-35.
- Rashid, M.M., Das, A.K., Shams, M.I., Biswas, S.K., 2014. Physical and mechanical properties of medium density fiber board (MDF) fabricated from banana plant (Musa sapientum) stem and midrib. Journal of the Indian Academy of Wood Science, 11(1): 1-4. DOI 10.1007/s13196-014-0109-z
- TS EN 2479, 2005. Wood-determination of static hardness. TSE, Ankara.
- TS EN 310, 1999. Wood-based panels-determination of modulus of elasticity in bending and of bending strengt. TSE, Ankara.
- TS EN 317, 1999. Particleboards and fibreboards-determination of swelling in thickness after immersion in water. TSE, Ankara.
- TS EN 319, 1999. Particleboards and fibreboards- determination of tensile strength perpendicular to the plane of the board. TSE, Ankara.
- TS EN 322, 1999. Wood-based panels- determination of moisture content. TSE, Ankara.
- TS EN 323, 1999. Wood-based panels- determination of density. TSE, Ankara.
- TS EN 13446, 2005. Wood-based panels- determination of withdrawal capasity of fasteners. TSE, Ankara.
- Vassiliou, V., Barboutis, I., 2005. Screw withdrawal capacity used in the eccentric joints of cabinet furniture connectors in particleboard and MDF. Journal of Wood Science, 51(6): 572-576. DOI 10.1007/s10086-005-0708-9
- Zhou, J., Zhou, H., Hu, C., Hu, S., 2013. Measurements of thermal and dielectric properties of medium density fiberboard with different moisture content. BioResources, 8(3): 4185-4192.
Ayrıntılar
| Birincil Dil | İngilizce |
|---|---|
| Konular | Mühendislik |
| Bölüm | Orijinal Araştırma Makalesi |
| Yazarlar | |
| Proje Numarası | 2017/1-59YLS |
| Yayımlanma Tarihi | 29 Haziran 2021 |
| Kabul Tarihi | 17 Mayıs 2021 |
| Yayımlandığı Sayı | Yıl 2021 Cilt: 22 Sayı: 2 |
