نتایج جستجو برای: wood coating
تعداد نتایج: 76235 فیلتر نتایج به سال:
A superhydrophobic coating on wood can effectively improve the hydrophobicity and service life of wood. In this study, an Al nano-coating was constructed transversal section poplar by magnetron sputtering based glow-discharge plasma. The structure, microscopic morphology, surface elements, hydrophobic properties were characterized tested. When coated for 20 s, water contact angle sample reach 1...
in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...
For the sake of direct use on previously constructed wooden buildings, a green flame resistant coating comprising sodium polysilicate (SPS) and boric acid was prepared. With weight gain only 10 wt%, treated wood sample (SPS/B-wood) had an improved limiting oxygen index value 40.3% passed V-0 rating in UL-94 test. Additionally, total heat release, smoke production peak carbon monoxide SPS/B-wood...
thermal barrier coatings (tbcs) are used to provide thermal insulation to the hot section components of gas turbines in order to enhance the operating temperature and turbine efficiency. hot corrosion and thermal shocks are the main destructive factors in tbcs which comes as a result of oxygen and molten salt diffusion into the coating. in this thesis atmospheric plasma spraying was used to dep...
A model of the moisture diffusion in wood under isothermal conditions taking into consideration coating of the surface of a specimen is presented in a 2-D-in-space formulation. A reliability of a corresponding 1-D model is investigated for a simulation of moisture movement in 2-D medium. This paper presents a technique to determine the width as well as the degree of edges coating of the specime...
A waterborne ultraviolet (UV)-curing coating was prepared on the surface of wood materials with modification of talcum powder and calcium carbonate (CaCO3). When the waterborne UV-curing coatings on the surface of wood materials (WUVCW) was radiated for 1 min by UV (λ = 365 nm) and dried at 40 ◦C for 10 min, it showed good hardness, adhesion, and impact strength, with controlling the talcum con...
Under the thermal action on wood when applying a protective screen made from fire-retardant fabric, process of temperature transfer is natural. It has been proven that depending properties coating fire-proof this could lead to varying degrees heat transfer. Therefore, it becomes necessary study conditions for establishing low conductivity and mechanism inhibits wood. Given this, mathematical mo...
The production of the H(2)O(2)-generating enzyme pyranose oxidase (POD) (EC 1.1.3.10) (synonym, glucose 2-oxidase), two ligninolytic peroxidases, and laccase in wood decayed by three white rot fungi was investigated by correlated biochemical, immunological, and transmission electron microscopic techniques. Enzyme activities were assayed in extracts from decayed birch wood blocks obtained by a n...
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