Evaluation of Bamboo Particleboards Produced with Urea-Formaldheyde Resin

Abstract

The bamboo waste can be an alternative material to sustain the crescent demand for particleboards, also bringing ecological benefits as reduction of the pressure for raw materials and landfill space demands. In this context, this research aimed to manufacture and determine some physical and mechanical properties of particleboards with bamboo waste particles (Dendrocalamus giganteus), obtained from different sources, bonded with four different percentages of urea–formaldehyde (UF) based resin (6%, 8%, 10% and 12% related to dry material of particles). Response variables investigated were: density; moisture content; thickness swelling in 2 and 24 hours; water absorption in 2 and 24 hours; internal adhesion (STpe); strength in tension parallel to faces (STpa); modulus of elasticity (MOE) and modulus of rupture (MOR). Results permitted to conclude that particleboards as mentioned showed good performance only in the physical properties requirements imposed by Brazilian Standard NBR 14810, but this was not observed to mechanical properties considered. New researches are needed in order to optimize the producing process parameters.

Технология Удаления Свободного Формальдегида Из Карбамидоформальдегидных Смол

“…Формальдегид внесен в список канцерогенных веществ, обладает токсичностью, негативно воздействует на генетический материал, репродуктивные органы, дыхательные пути, глаза, кожный покров. На сегодняшний день разработаны классы токсичности клеевых композиций в зависимости от содержания свободного формальдегида, и разработка новых методов получения экологически безопасных КФ смол является актуальной задачей [9][10][11][12][13][14][15][16][17][18][19][20][21][22].…”

Use of sugarcane bagasse and industrial timber residue in particleboard production

“…To make particleboard manufacturing greener, an alternative is to incorporate lignocellulosic waste in particleboards (Hazrati-Behnagh et al 2016;Akgül et al 2017;Fiorelli et al 2019;Ribeiro et al 2019), such as corn cob (Paiva et al 2012), flax and hemp (Sam-Brew and Smith 2017), poppy husks (Khazaeian et al 2015;Kusumah et al 2017), bamboo (Melo et al 2014;Valarelli et al 2014), and sugarcane bagasse (Hazrati-Behnagh et al 2016;Oliveira et al 2016;Fiorelli et al 2018;Sugahara et al 2019).…”

Painel MDP com resina poliuretana à base de óleo de mamona com adição de cimento

“…Diversos estudos vêm sendo desenvolvidos com o intuito de analisar o potencial de painéis MDP com adição de outros materiais, como compósitos laminados como fibras de vidro, carbono, sisal e piaçava, serragem e cimento em matriz epóxi, e resíduos agrícolas como o pergaminho de café (BERTOLINI et al, 2014a;GARZÓN-BARRERO et al, 2016;SCATOLINO et al, 2017;SOUZA et al, 2014;VALARELLI et al, 2014). Porém, não se observam na literatura estudos de painéis MDP feitos com resina poliuretana à base de óleo de mamona, partículas de madeira tratadas com preservativo CCA e outros materiais de construção, como cimento, e resíduos de demolição e construção.…”