Yonga Levhalarin Bazi Mekanik ve Fiziksel Özellikleri Üzerine Atik Tas Yünü Kullaniminin Etkisi
[ X ]
Tarih
2024
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Bartin Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu arastirmada yonga levha üretiminde farkli oranlarda atik tas yünü kullaniminin levhalarin fiziksel ve mekanik özellikleri üzerine etkisi arastirilmistir. Bu amaçla hazirlanan levha taslaginin orta tabakasina tam kuru yonga agirligina oranla %1,5, %3, %4,5 ve %6 oranlarinda atik tas yünü ilave edilmistir. Deney levhalarinin üretiminde yapistirici olarak orta tabakada %7, yüzey tabakada %12 oraninda üre formaldehit (ÜF) reçinesi kullanilmistir. Karisim oranlarina göre hazirlanan levha taslaklari 195±5 °C sicaklik ve 30 kg/cm² basinç altinda 5 dk süre ile deney presinde preslenerek 550x550x16 mm ebatlarinda 710±10 kg/m³ hedef yogunlugunda deney levhalari elde edilmistir. Elde edilen levhalarin mekanik ve fiziksel direnç özelliklerinden yüzeye dik çekme (TS-EN 319), egilme direnci ve elastikiyet modülü (TS-EN 310), 2 saat kalinligina sisme ve su alma testleri (TS-EN 317) ile serbest formaldehit (TS EN ISO 12460-5) degerleri belirlenmis ve kontrol örnekleri ile karsilastirilmistir. Test sonuçlarindan orta tabaka levha taslagi içerisinde max. %3 oraninda atik tas yünü lifi kullanilmasinin yonga levhalarin mekanik ve fiziksel direnç özellikleri üzerinde olumlu yönde bir etkisinin oldugu ve standartlarda belirtilen limit degerleri sagladigi görülmüstür.
In this study, the effect of using different proportions of waste stone wool in particle board production on the physical and mechanical properties of the boards was investigated. For this purpose, waste stone wool was added to the middle layer of the board draft at the rates of 1.5%, 3%, 4.5% and 6% in proportion to the full dry chip weight. Urea formaldehyde (UF) resin was used as an adhesive in the production of the test boards with 7% in the middle layer and 12% in the surface layer. The board mats prepared according to the mixing ratios were pressed in the test press under 195±5 °C temperature and 30 kg/cm² pressure for 5 minutes and test boards with dimensions of 550x550x16 mm and a target density of 710±10 kg/m³ were obtained. Internal bonding strength (TS-EN 319), bending strength and elasticity modulus (TS-EN 310), 2-hour thickness swelling and water absorption tests (TS-EN 317) and free formaldehyde (TS EN ISO 12460-5) values of the obtained boards were determined from the mechanical and physical resistance properties and compared with the control samples. As a results, it was seen that the use of waste stone wool fiber at a maximum rate of 3% in the middle layer board draft had a positive effect on the mechanical and physical resistance properties of the particle boards and provided the limit values specified in the standards.
In this study, the effect of using different proportions of waste stone wool in particle board production on the physical and mechanical properties of the boards was investigated. For this purpose, waste stone wool was added to the middle layer of the board draft at the rates of 1.5%, 3%, 4.5% and 6% in proportion to the full dry chip weight. Urea formaldehyde (UF) resin was used as an adhesive in the production of the test boards with 7% in the middle layer and 12% in the surface layer. The board mats prepared according to the mixing ratios were pressed in the test press under 195±5 °C temperature and 30 kg/cm² pressure for 5 minutes and test boards with dimensions of 550x550x16 mm and a target density of 710±10 kg/m³ were obtained. Internal bonding strength (TS-EN 319), bending strength and elasticity modulus (TS-EN 310), 2-hour thickness swelling and water absorption tests (TS-EN 317) and free formaldehyde (TS EN ISO 12460-5) values of the obtained boards were determined from the mechanical and physical resistance properties and compared with the control samples. As a results, it was seen that the use of waste stone wool fiber at a maximum rate of 3% in the middle layer board draft had a positive effect on the mechanical and physical resistance properties of the particle boards and provided the limit values specified in the standards.
Açıklama
Anahtar Kelimeler
Mekanik ve fiziksel özellikler, sifir atik, tas yünü, yonga levha
Kaynak
Bartin Orman Fakültesi Dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
26
Sayı
4
