نتایج جستجو برای: urea formaldehyde resin

تعداد نتایج: 77915  

Journal: :جنگل و فرآورده های چوب 0
وحید معظمی کارشناس ارشد گروه علوم و صنایع چوب و کاغذ، دانشگاه زابل، زابل، ایران مرتضی ناظریان دانشیار گروه علوم و صنایع چوب و کاغذ، دانشگاه زابل، زابل، ایران

this study evaluated the effects of end to end joint types of athel stripes at three level (end to end basic, end to end mitrated and end to end half lap joint) used in core layer veneered with three wood species (fir, beech and oak) and glued with three different ratio of melamine formaldehyde/urea formaldehyde resin (0:100, 25:75 and 50:50) on the bending strengths of bloakboard. according to...

2016
Hamed Younesi-Kordkheili Antonio Pizzi Frank Wiesbrock

The effect of acidic ionic liquid (IL) as a new catalyst on the properties of wood-based panels bonded with urea-glyoxal (UG) resins was investigated. Different levels of N-methyl-2-pyrrolidone hydrogen sulfate ([HNMP] HSO4 (0, 1, 2, 3 wt %)) were added to prepared UG resin. The resin was then used for preparing laboratory particleboard panels. Then, the properties of the prepared panels were e...

Journal: :Journal of Wood Science 2021

Abstract Chestnut bur is an agro-waste material generated in the chestnut production. It a tannin-rich lignocellulosic which might be promising raw for low-formaldehyde composite particleboard production when using urea–formaldehyde (UF) as bonding adhesive. In this study, characteristics of were analyzed to assess its application value panel. Five-type particleboards manufactured from mixture ...

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