Orhan Kelleci

Bolu Abant İzzet Baysal University · Department of Biology

In this study, it was aimed to determine optimum wood content in the particleboard (PB). This issue is important for the protection of forest resources. PBs were produced with two densities (520 and 560 kg/m³), three surface layer (SL) ratios (28%, 30%, and 32%), and two sanding end-thicknesses (17,8 mm and 18,0 mm). PBs were laminated with decor p...

In this study, it was aimed to recycle waste polystyrene (PS) and obtain a material with high screw retention resistance that can be used instead of wood material. For this purpose, waste MDF dust (MF) and glass fiber (GF) were used as fillers in the PS matrix. Waste PS was first dissolved in gasoline and then 50-100-150 % fillers were added and mi...

Road traffic pollution and industrial plant-induced pollution affect negatively the development of forest trees. How forest trees are affected by their growing environment is important for sustainable environment. The study aimed to investigate the physical, mechanical, chemical, and morphological properties of the Pinus nigra (black pine) tree whi...

In this study, polyurethane (PU) foam composite was produced by adding wheat flour (WF), satin surface finishing plaster (AL) and urea formaldehyde (UF) into polyurethane wood glue. In this study, it is aimed to produce water resistant, high screw holding force and light weight and rigid PU foam composite that can be used in the core layer of woode...

In this study, the adhesion performance of wood glues was evaluated depending on temperature. Polyvinyl acetate (PVA) and poly urethane (PU) glue were used to adhere to the Back pine (Pinus nigra) wood samples. The adhesion performance of the samples was determined under three different temperature effects: below room temperature (4 ° C), at room t...

In this study, density and surface layer properties affecting particle board quality were examined and a compilation was made with the latest studies. This study compiles critical information regarding density and chip quantity, significant parameters in the production of particle board. Particleboard, a composite material derived from wood residue...

In this study, the possibility of applicable the urea formaldehyde (UF) resin as a wood surface coater was investigated. Organic fillers were used in the resin solution to prevent crack formation on the covered surface with UF resin. Oriented strand board (OSB) and black pine (Pinus nigra) massive wood were used to prepare the samples. Thus, the di...

In this study, polyvinyl acetate (PVA) and polyurethane (PU) wood adhesives were foamed. It was aimed to achieve adhesive savings by allowing the adhesives to cover a larger surface area through foaming. Egg white (EW), wheat flour (WF), and Sodium Lauretha Sulfate (SLES) were used as foaming agents for the adhesives. The foaming agents were mechan...

In this study, the phenol formaldehyde resin volume was increased (foamed) using naturalfoaming agents. Increasing production costs force manufacturers to produce using fewer raw materials. Inrecent years, in the wood sector, studies have been carried out on glue efficiency by foaming the glue. Inthis study, egg white (EW), sodium bicarbonate (SB),...

In this study, the lamination process on the particle board (PB) surface was carried out during the board production and the possibilities of saving wood raw material, time, labor and cost by producing the board without the need for cooling, sanding and a separate lamination process were investigated. For this purpose, ready-to-use boards were obta...

In this study, polystyrene (PS) polymer composites were prepared and characterized by mechanically and physically. It was aimed to produce a cheap, lightweight, and eco-friendly wood plastic composite (WPC). Waste PS was melted in a cap by gasoline, and 200 % wheat flour (PS(W)), wheat starch (PS(S)), and medium-density fiberboard (MDF) sawdust (PS...

In this study, urea formaldehyde (UF) resin was foamed using egg white (EW), blood albumin (BA), blood protein (BP) and liquid soap (SP), and the effect of foaming on the adhesive strength (IB), gelling time, density and water absorption (WA) was investigated. Black pine samples were used for the IB analysis. Two 50 mm x 50 mm x 5 mm wood samples w...

In this study, the effect of silane on particleboard physical and mechanical properties was investigated. Silane was mixed in particleboards with two different methods. In the first method, silane was mixed with wood chips namely as a pretreatment of wood chips. In the second method, silane was mixed with urea-formaldehid adhesive. The amounts of s...

In this study, its aimed to investigate production possibilities of a new wood sandwich panel produced by medium density fiber bord (MDF) (as surface layer) and polistren (PS) and carboard (CB) (as core materials). Materials which compose the panel were 2mm MDF, 3mm PS and 2mm CB. Materials were sticked each other with a Polyvinyl acetate (PVA) bas...

Urea formaldehyde (UF) is the most widely used thermoset glue in the wood composite board industry. UF has formaldehyde emission, which is harmful to the environment and human health. In this study, it was aimed to ensure more efficient use of glue by foaming UF, as well as to reduce the amount of formaldehyde emission and thus to realize a cleaner...

In this study, glues have been studied to develop more environmentally friendly and natural wood adhesives that can be an alternative to the traditionally used Polyvinyl acetate (PVA) glue. For this purpose, two different glues were developed in a laboratory environment. For the first glue (PS), polystyrene foam with a density of 20kg/m 3 was melte...

The aim of this study was to investigate the physical, mechanical, morphological, structural, and thermal properties of polylactic acid (PLA) and polyhydroxybutyrate (PHB) biopolymer composites reinforced with thermally treated wood flour and to determine the formulations having optimum properties by using multi-criteria decision-making (MCDM) meth...

In this study, blends of polypropylene (PP) with polylactic acid (PLA) and polyhydroxybutyrate (PHB) biopolymers and wood flour were prepared, and Fuzzy and Grey Multi-Criteria Decision-Making (MCDM) methods were used to determine the blends with the best properties. The physical, mechanical, thermal, structural, and morphological properties of the...

The aim of this study was to investigate the surface protection effects of acrylic-based varnishes with nano-fillers including TiO2 and Al2O3 in the conservation process of naturally aged and worn surfaces of historical and cultural wood structures. The obtained varnishes were applied to the wood surfaces with a brush and the coated samples with th...

Bu çalışmada 20mm Polistren izolasyon levhalarının 3mm MDF ve 3mm masif karacam ile kaplanarak levha üretiminde kullanılma olanakları değerlendirilmiştir. İzolasyon levhası olarak yada mobilya endüstrisi için daha önce böyle bir çalışma yapılmamıştır. Bu çalışma ile odun hammaddesi kullanım miktarını azaltmak ve izolasyon levhası olarak kullanımını...

The particle board and MDF industry has become the main industry in our country providing raw materials to the furniture industry. Due to lower cost and easier to supply than solid materials, furniture manufacturers in our country have started to use chipboard and MDF for furniture production. In this study, a qualitative research method was conduc...

z Bu araştırmada, yonga levha üretiminde ürün kalitesini ve maliyeti etkileyen faktörlerden biri olan, yüzey (üst-alt) tabaka yonga oranlarının levha özellikleri üzerine etkisi incelenmiştir. Test örnekleri Yıldız Entegre Mudurnu tesisinde üretim hattı kullanılarak üretilmiştir. Çalışmada üretilen 3 katlı yonga levhalarda üst-alt yüzey tabaka yonga...

Wood is an organic material which can be used widely. It is a biodegradable material due to its organic structure and it has superior properties such as acoustic, electric, mechanic, biologic properties etc. but technological innovations and environmental concerns leads to wood sector towards composite materials. Nowadays many composite materials a...