Composite wood products
vahid moazami; Fatemeh Afsooni
Abstract
With growth and development of the modern societies and achieve towards industrialization of the countries, Use of the water, one of the major concerns is considered. Optimal usage of water resources, has special position and considerable, that its result is importance of the reuse of rain's water as ...
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With growth and development of the modern societies and achieve towards industrialization of the countries, Use of the water, one of the major concerns is considered. Optimal usage of water resources, has special position and considerable, that its result is importance of the reuse of rain's water as a reliable source for supply the consumption water. The purpose of this research was, use of rain's water, in composition with urea formaldehyde adhesive, In order to adjust the final concentration of the adhesive. To prevent damage against rain water equipment, the Lagan system was transferred through the canals constructed at Arian sina factory. Then it was treated with the package at the factory. The results of the FT_IR spectrum, obtained from composition adhesive samples with rain's water and ordinary water, showed that the rain's water increased the number of hydrogen bonds in the adhesive. But based on the t test, the difference between Mechanical strength and physical properties of use of rain's water than to the ordinary water was not significant. Qua that the glue combined with rain's water does not have any negative effect on adhesive properties. Therefore, after research, Arian Sina has been saving water consumption by using 14000 liters of water per day, due to the country's limited resources and lack of resources.
Composite wood products
vahid moazami; Fatemeh Afsoni; Saeid Dadashi; Esmaeil Dadashi
Abstract
The aim of this study was evaluation the mechanical properties of medium density fiber board of domestic production of Iran Company and imported medium density fiber board (Malaysia). Due to lack of knowledge and lack of access_to information, factors and variables influencing in production of fiberboard ...
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The aim of this study was evaluation the mechanical properties of medium density fiber board of domestic production of Iran Company and imported medium density fiber board (Malaysia). Due to lack of knowledge and lack of access_to information, factors and variables influencing in production of fiberboard papers in industry especially imported boards, to better understand the differences of infrared radiation to reveal a vertical density profile of boards and infrared Spectroscopy (FT_IR), to identify compounds of fibers and the links caused by adhesive and dimensional analysis of fibers of the boards were used. The results of statistical analysis showed that the boards of domestic production_than to the imported boards have high mechanical strength. So that average flexural strength and modulus of elasticity in order for boards constructed in the country 34.56 and 2762 MPa and 2277 MPa, and it is 24.87 for imported supplies. The average internal bond strength of boards manufactured domestically MPa 0.78 and 0.58 have been of imported for the board. The results of density profile showed that the boards made into the country, in middle layer have 599 up to 615 kg/ m3 density and also surface layers have 1060 kg/m3, while the imported boards in middle layer have 533 up to 571 kg/m3 density and also surface layers have 1020 kg/m3 density. According to the results obtained from FT_IR spectra’s of the samples. Domestic boards than to the imported boards have more hydrogen links. Beside, pictures of analysis of fibers showed that the highest, lowest and average of fibers length for the domestic boards 260, 10 and 120 and lowest and average of fibers length for the imported boards 190, 5 and 45 were obtained, respectively.
Composite wood products
Morteza Nazeryan; Vahid Moazemi; Rahim Mohebi gargari
Abstract
The aim of this study was the evaluation of treatment effect of giant reed (Arundo donax) (untreated, heat-treated and hot-water-leached treatment) used in core layer of sandwich panel, and also the effect of weight ratio of almond shell powder to melamine/urea formaldehyde at three levels (3:97, 18:82 ...
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The aim of this study was the evaluation of treatment effect of giant reed (Arundo donax) (untreated, heat-treated and hot-water-leached treatment) used in core layer of sandwich panel, and also the effect of weight ratio of almond shell powder to melamine/urea formaldehyde at three levels (3:97, 18:82 and 33:67 w/w) on the dry- and wet-pull off adhesion (after 2 hours immersion in boiling water) of sandwich panel. Statistical analysis and Duncan multiple range test showed that the type of treatment of core layer particle and the ratio of almond shell powder to melamine/urea formaldehyde statistically influenced the dry and wet-pull off adhesion. According to the FTIR spectra obtained from samples made from particle treated with hot-water, the hot-water treatment caused an increase in number of hydrogen bonds. Macroscopic photos, also, showed that hot-water treatment created the best surface quality in order to forming desirable bond. Generally, panel manufactured from hot-water-treated particles in core layer and 33% of almond shell powder in glue line had the highest pull off adhesion in dry (5.01MPa) and wet (2.86 MPa) conditions.
