The aim of this study was to investigate the effects of impregnation with Boron compounds (Borax ... more The aim of this study was to investigate the effects of impregnation with Boron compounds (Borax (Bx), Boric acid (Ba), Bx+Ba (wt:wt 50:50%)), Imersol-Aqua (Ia) and Timbercare-Aqua (Ta) on the screw (S) withdrawal strength of some solid wood materials. For this aim, Oriental beech (Fagus orientalis Lipsky), European oak (Quercus petrea Liebl.) and Scotch pine (Pinus sylvestris Lipsky) wood samples were prepared according to TS EN 13446 and impregnated with Boron compounds, Imersol-Aqua and Timbercare-Aqua according to ASTM D 1413, TS 344, TS 345 and directions of the manufacturer. After the impregnation process the screw withdrawal strength was measured according to TS EN 13446. Consequently, among the wood types, withdrawal strength was found to be the highest in European oak (4.049 Nmm-2) and the lowest in Scotch pine (2.583 N.mm-2). As for the screw diameter, the withdrawal strength was obtained the highest in S1 (3.5 mm) (3.564 N.mm-2) and the lowest in S2 (4 mm) (3.480 N.mm-2). Considering the interaction of wood types, impregnation chemicals and screw diameters, the withdrawal strength were obtained in European oak + Bx + S1 (4.481 N.mm-2) whereas the lowest was in Scotch pine + Ta + S1 (2.369 N.mm-2). In consequence, it was seen that the impregnation process increased the screw withdrawal strength. It can be said that, in the applications, the pieces that are impregnated with Bx and connected with S1 at the surface shall display the highest strength.
In this Paper, at first Pigment Red 3 was synthesized and then treated chemically. The treated pi... more In this Paper, at first Pigment Red 3 was synthesized and then treated chemically. The treated pigment Showed very good dispersibility and dispersion stability in aqueous media surface chemistry and shape of the pigment were affected by chemical treatments. A ...
This study was designed to determine the effect of impregnation with some chemicals on the densit... more This study was designed to determine the effect of impregnation with some chemicals on the density of wooden materials. For this reason, experimentals were prepared from Scotch pine and Oriental beech woods and impregnated with polyethylene glycole (PEG-400), ammonium per sulphate (AS), vacsol (V), and also water-repellent (WR), such as stryne, methylemetacrylate and isocynate according to ASTM-D 1413-76 It was found that, after impragnation process oriental beech wood dried in air was the most dense material when it is individually used with styrene and MMA, whereas Scotch pine wood was the most dense when it is used with water-repellent (WR) materials and with as secondary processed. The most density material at dry stuation at Oriental beech is obtained when processed with boric acid+borax+ styrene, izocynate and at Scotch pine is obtained with PEG-400+ boric acid +borax and izocynate.
In this study, phenol-formaldehyde (PF) resin has been modified with titanium dioxide nanoparticl... more In this study, phenol-formaldehyde (PF) resin has been modified with titanium dioxide nanoparticles (nano-TiO2) at a varying ratio from 0.05 wt.% to 1.5 wt.% to enhance the thermal properties and combustion performance of the resins. The effect of the nano-TiO2 modification on the properties (chemical or thermal) of the resins was determined by Fourier to transform infrared (FT-IR) and thermal analysis (TGA) techniques. In addition, the combustion performance of laminated veneer lumber (LVL) samples bonded with the PF resin modified with nano-TiO2 was tested. The result of the FT-IR analysis indicated that the modified PF resins had match peaks to the reference PF resin. These similarities of the peaks supported that the modified PF resins were successfully synthesise with phenol, formaldehyde, and nano-TiO2. The PF resins modified by nano-TiO2 demonstrated better thermal stability than the reference resin. The nano-TiO2 modified PF resin exhibited a favourable influence on the combustion characteristics of LVL. In consequence, PF resin modified with nano-TiO2 could be used as a combustion retardant adhesive in the wood industry.
An effective way of reducing the gap between preventive performance of toxic chromate-based compo... more An effective way of reducing the gap between preventive performance of toxic chromate-based compounds and their traditional replacements (zinc phosphate) is using the new generation of phosphate based anti-corrosion pigments. These compounds are product of modified ...
Bu çalışmada, ağaç işleri endüstrisinde yaygın bir şekilde kullanılan ve Türkiye coğrafyasında ye... more Bu çalışmada, ağaç işleri endüstrisinde yaygın bir şekilde kullanılan ve Türkiye coğrafyasında yeterince yetişmesi nedeniyle sarıçam (Pinus sylvestris L.), Doğu kayını (Fagus orientalis L.) ve sapsız meşe (Quercus petrea L.) odunları kullanılarak, kurutma ve iklimlendirme parametrelerinin ahşabın bazı fiziksel ve mekanik özelliklerine ve ahşap konstrüksiyon uygulamalarına etkisi araştırılmıştır. Deney örneklerinin hazırlanmasında kullanılan üç ahşap türünden kaba ölçülerdeki yeterli miktarda taslak parçalar ısıl işlem fırınında 100°C lik sıcaklıkta ve ritmik buhar püskürtmeli fırın ortamında 360 saat süre ile kurutulmuştur. Kurutulmuş üç odun türü taslak parçalardan 1260 adet deney örneği ilgili standartlara göre hazırlanmış ve araştırma yönteminde bildirildiği gibi kullanılmıştır. Deney örnekleri tümü sırasıyla 20°C/%65 iklim şartında (iklimlendirme odasında) 168 saat (bir hafta) bekletilip, örneklerin üçte birisine testler uygulanmıştır. Kalan örneklerin tamamı ardışık (münavebeli...
Dowels, 6, 8 and 10 mm diameters were bonded with PVAc adhesive on Medium Density Fiberboard (M... more Dowels, 6, 8 and 10 mm diameters were bonded with PVAc adhesive on Medium Density Fiberboard (MDF). Edges were covered with 5, 8 and 12 mm beech wood materials, drilled 25 mm depth. Tensile strength measurments were made on the samples. The highest tensile strength value was given as 6 mm dowel and MDF covered with 8 mm thickness beech wood material (2.294 N/mm 2 ), the lowest value was obtained with 10 mm dowel and with unprocessed MDF (1.314 N/mm 2
ÖZET Ağaç malzeme emprenye sektörü günümüzde oldukça önemli bir konuma gelmiştir. Emprenye işlemi... more ÖZET Ağaç malzeme emprenye sektörü günümüzde oldukça önemli bir konuma gelmiştir. Emprenye işlemine tabi tutulmuş ahşap telefon ve elektrik direklerine olan talep sektörü oluşturmaya başlamış, daha sonra talebin değişmesi ve farklılaşması sonucu sektör gelişmiştir. Sektörün büyümesi dış ticareti de geliştirmiştir. Bu çalışma ağaç malzeme emprenye sektörünün dış ticaretteki yerini ve önemini belirtmek amacı ile yapılmıştır. Bu maksatla Türkiye'de faaliyet gösteren farklı yapılardaki A ve B gurubu işletmelere anket ...
... Ağaç malzemeler, Ankara'daki kereste işletmelerinden tamamen tesadüfi metotla temin ... more ... Ağaç malzemeler, Ankara'daki kereste işletmelerinden tamamen tesadüfi metotla temin edilmiş ve seçiminde kerestenin kusursuz olmasına, liflerinin düzgün, ardaksız, reaksiyon odunu bulunmayan, mantar ve böcek zararlarına uğramamış olmasına özen gösterilmiştir. ...
The aim of this study was to investigate the effects of impregnation with Imersol-Aqua on the com... more The aim of this study was to investigate the effects of impregnation with Imersol-Aqua on the compression strength of some solid wood materials. For this aim, Oriental beech (Fagus orientalis Lipsky), European oak (Quercus petrea Liebl.), Scotch pine (Pinus sylvestris Lipsky), Uludag fir (Abies Bornmülleriana Mattf.), Oriental spruce (Picea orientalis Lipsky) and Lombardy poplar (Populus nigra Lipsky) wood samples were
The aim of this study was to investigate the effects of impregnation with Boron compounds (Borax ... more The aim of this study was to investigate the effects of impregnation with Boron compounds (Borax (Bx), Boric acid (Ba), Bx+Ba (wt:wt 50:50%)), Imersol-Aqua (Ia) and Timbercare-Aqua (Ta) on the screw (S) withdrawal strength of some solid wood materials. For this aim, Oriental beech (Fagus orientalis Lipsky), European oak (Quercus petrea Liebl.) and Scotch pine (Pinus sylvestris Lipsky) wood samples were prepared according to TS EN 13446 and impregnated with Boron compounds, Imersol-Aqua and Timbercare-Aqua according to ASTM D 1413, TS 344, TS 345 and directions of the manufacturer. After the impregnation process the screw withdrawal strength was measured according to TS EN 13446. Consequently, among the wood types, withdrawal strength was found to be the highest in European oak (4.049 Nmm-2) and the lowest in Scotch pine (2.583 N.mm-2). As for the screw diameter, the withdrawal strength was obtained the highest in S1 (3.5 mm) (3.564 N.mm-2) and the lowest in S2 (4 mm) (3.480 N.mm-2). Considering the interaction of wood types, impregnation chemicals and screw diameters, the withdrawal strength were obtained in European oak + Bx + S1 (4.481 N.mm-2) whereas the lowest was in Scotch pine + Ta + S1 (2.369 N.mm-2). In consequence, it was seen that the impregnation process increased the screw withdrawal strength. It can be said that, in the applications, the pieces that are impregnated with Bx and connected with S1 at the surface shall display the highest strength.
In this Paper, at first Pigment Red 3 was synthesized and then treated chemically. The treated pi... more In this Paper, at first Pigment Red 3 was synthesized and then treated chemically. The treated pigment Showed very good dispersibility and dispersion stability in aqueous media surface chemistry and shape of the pigment were affected by chemical treatments. A ...
This study was designed to determine the effect of impregnation with some chemicals on the densit... more This study was designed to determine the effect of impregnation with some chemicals on the density of wooden materials. For this reason, experimentals were prepared from Scotch pine and Oriental beech woods and impregnated with polyethylene glycole (PEG-400), ammonium per sulphate (AS), vacsol (V), and also water-repellent (WR), such as stryne, methylemetacrylate and isocynate according to ASTM-D 1413-76 It was found that, after impragnation process oriental beech wood dried in air was the most dense material when it is individually used with styrene and MMA, whereas Scotch pine wood was the most dense when it is used with water-repellent (WR) materials and with as secondary processed. The most density material at dry stuation at Oriental beech is obtained when processed with boric acid+borax+ styrene, izocynate and at Scotch pine is obtained with PEG-400+ boric acid +borax and izocynate.
In this study, phenol-formaldehyde (PF) resin has been modified with titanium dioxide nanoparticl... more In this study, phenol-formaldehyde (PF) resin has been modified with titanium dioxide nanoparticles (nano-TiO2) at a varying ratio from 0.05 wt.% to 1.5 wt.% to enhance the thermal properties and combustion performance of the resins. The effect of the nano-TiO2 modification on the properties (chemical or thermal) of the resins was determined by Fourier to transform infrared (FT-IR) and thermal analysis (TGA) techniques. In addition, the combustion performance of laminated veneer lumber (LVL) samples bonded with the PF resin modified with nano-TiO2 was tested. The result of the FT-IR analysis indicated that the modified PF resins had match peaks to the reference PF resin. These similarities of the peaks supported that the modified PF resins were successfully synthesise with phenol, formaldehyde, and nano-TiO2. The PF resins modified by nano-TiO2 demonstrated better thermal stability than the reference resin. The nano-TiO2 modified PF resin exhibited a favourable influence on the combustion characteristics of LVL. In consequence, PF resin modified with nano-TiO2 could be used as a combustion retardant adhesive in the wood industry.
An effective way of reducing the gap between preventive performance of toxic chromate-based compo... more An effective way of reducing the gap between preventive performance of toxic chromate-based compounds and their traditional replacements (zinc phosphate) is using the new generation of phosphate based anti-corrosion pigments. These compounds are product of modified ...
Bu çalışmada, ağaç işleri endüstrisinde yaygın bir şekilde kullanılan ve Türkiye coğrafyasında ye... more Bu çalışmada, ağaç işleri endüstrisinde yaygın bir şekilde kullanılan ve Türkiye coğrafyasında yeterince yetişmesi nedeniyle sarıçam (Pinus sylvestris L.), Doğu kayını (Fagus orientalis L.) ve sapsız meşe (Quercus petrea L.) odunları kullanılarak, kurutma ve iklimlendirme parametrelerinin ahşabın bazı fiziksel ve mekanik özelliklerine ve ahşap konstrüksiyon uygulamalarına etkisi araştırılmıştır. Deney örneklerinin hazırlanmasında kullanılan üç ahşap türünden kaba ölçülerdeki yeterli miktarda taslak parçalar ısıl işlem fırınında 100°C lik sıcaklıkta ve ritmik buhar püskürtmeli fırın ortamında 360 saat süre ile kurutulmuştur. Kurutulmuş üç odun türü taslak parçalardan 1260 adet deney örneği ilgili standartlara göre hazırlanmış ve araştırma yönteminde bildirildiği gibi kullanılmıştır. Deney örnekleri tümü sırasıyla 20°C/%65 iklim şartında (iklimlendirme odasında) 168 saat (bir hafta) bekletilip, örneklerin üçte birisine testler uygulanmıştır. Kalan örneklerin tamamı ardışık (münavebeli...
Dowels, 6, 8 and 10 mm diameters were bonded with PVAc adhesive on Medium Density Fiberboard (M... more Dowels, 6, 8 and 10 mm diameters were bonded with PVAc adhesive on Medium Density Fiberboard (MDF). Edges were covered with 5, 8 and 12 mm beech wood materials, drilled 25 mm depth. Tensile strength measurments were made on the samples. The highest tensile strength value was given as 6 mm dowel and MDF covered with 8 mm thickness beech wood material (2.294 N/mm 2 ), the lowest value was obtained with 10 mm dowel and with unprocessed MDF (1.314 N/mm 2
ÖZET Ağaç malzeme emprenye sektörü günümüzde oldukça önemli bir konuma gelmiştir. Emprenye işlemi... more ÖZET Ağaç malzeme emprenye sektörü günümüzde oldukça önemli bir konuma gelmiştir. Emprenye işlemine tabi tutulmuş ahşap telefon ve elektrik direklerine olan talep sektörü oluşturmaya başlamış, daha sonra talebin değişmesi ve farklılaşması sonucu sektör gelişmiştir. Sektörün büyümesi dış ticareti de geliştirmiştir. Bu çalışma ağaç malzeme emprenye sektörünün dış ticaretteki yerini ve önemini belirtmek amacı ile yapılmıştır. Bu maksatla Türkiye'de faaliyet gösteren farklı yapılardaki A ve B gurubu işletmelere anket ...
... Ağaç malzemeler, Ankara'daki kereste işletmelerinden tamamen tesadüfi metotla temin ... more ... Ağaç malzemeler, Ankara'daki kereste işletmelerinden tamamen tesadüfi metotla temin edilmiş ve seçiminde kerestenin kusursuz olmasına, liflerinin düzgün, ardaksız, reaksiyon odunu bulunmayan, mantar ve böcek zararlarına uğramamış olmasına özen gösterilmiştir. ...
The aim of this study was to investigate the effects of impregnation with Imersol-Aqua on the com... more The aim of this study was to investigate the effects of impregnation with Imersol-Aqua on the compression strength of some solid wood materials. For this aim, Oriental beech (Fagus orientalis Lipsky), European oak (Quercus petrea Liebl.), Scotch pine (Pinus sylvestris Lipsky), Uludag fir (Abies Bornmülleriana Mattf.), Oriental spruce (Picea orientalis Lipsky) and Lombardy poplar (Populus nigra Lipsky) wood samples were
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Papers by Prof. Dr. Musa ATAR