Effects of MDI content on properties of thermally treated oriented strand board (OSB)

Direske, Martin; Bonigut, Juergen; Wenderdel, Christoph; Scheiding, Wolfram; Krug, Detlef

doi:10.1007/s00107-017-1256-x

Cited by 18 publications

(8 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The obtained results showed that the concentrated static loading of the samples offers conclusive data for interpreting the properties of the OSB boards. Paper [21] analysed the effect of methylene diphenyl isocyanate-MDI (3, 4, 5%, on dry mass) adhesive content on the heat-treated OSB board after fabrication at temperatures of 160 °C and 175 °C. Salari et al [22] made some evaluations on the use of the Paulownia (Paulownia fortunei) wood to OSB production but also on the use of nano-clay particles near UF resin.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Strand Characteristics on the Properties of Oriented Strand Boards Obtained from Resinous and Broad-Leaved Fast-Growing Species

et al. 2021

View full text Add to dashboard Cite

The paper aims to investigate the influence of the characteristics of the strands on the properties of oriented strand boards (OSB). To solve this objective, some global synthetic characteristics of the strands (the slenderness ratio, the characteristics of thinness, and the specific surface) of four wood species currently used in this technology (spruce and pine for softwood, and poplar and willow for hardwood) were first studied. The characteristics of the OSB obtained from each species separately were also determined, and finally the correlations analysis was made between the characteristics of the strands and those of the corresponding OSB boards. The working methodology used the European tests regarding the physical and mechanical properties of the boards, but also algorithms for forecasting and evaluating the quality of the strands and boards. The conclusions regarding the characteristics of the strands have highlighted the role of the specific surface of the strand and the characteristics of the thickness; respectively, the conclusions regarding the characteristics of the boards showed that the fast-growing species of willow and poplar lead to obtaining higher quality OSB boards. The general conclusion of the paper is that the characteristics of the strands have a significant influence on the physical–mechanical properties of the OSB board.

show abstract

Section: Introductionmentioning

confidence: 99%

Influence of the Strand Characteristics on the Properties of Oriented Strand Boards Obtained from Resinous and Broad-Leaved Fast-Growing Species

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Maulana et al (2019) reported that increasing the resin content resulted in better physical and mechanical properties of BOSB. Increasing the resin content of methylene diphenyl di-isocyanate (MDI) in the range of 3-5% resulted in better OSB strength and dimensional stability (Direske et al 2017). Based on the above explanation, BOSB from the mixture of betung and ampel bamboo with different resin content have the potential to be developed.…”

Section: Introductionmentioning

confidence: 99%

Effects of Resin Content on the Characteristics of Bamboo Oriented Strand Board Prepared from Strands of Betung, Ampel, and Their Mixtures

et al. 2021

View full text Add to dashboard Cite

The objectives of this research were to evaluate bamboo-oriented strand board (BOSB) characteristics made from betung (Dendrocalamus asper), ampel (Bambusa vulgaris), and their mixtures at two different contents (3% and 5%) of methylene diphenyl di-isocyanate (MDI) adhesives. The strands were steam-treated at 126°C for 1 h under the pressure of 0.14 MPa. Three-layered BOSBs with a target density of 0.7 g/cm3 were made with the size of 30 cm x 30 cm x 0.9 cm and a shelling ratio of 1:2:1 (face:core:back layers). The physical and mechanical properties of BOSB were evaluated following JIS A 5908 (2003) standard, and the results were compared with the CSA 0437.0 Grade O-1 standard. The results show that BOSB from the mixtures of betung and ampel bamboo strands has higher dimensional stability as shown by the decrease in water absorption and thickness swelling and higher mechanical properties than single BOSB. All BOSBs with 5% resin content have higher dimensional stability, MOE, and MOR than BOSB with 3% resin content. The physical and mechanical properties of all BOSB manufactured met the CSA 0437.0 Grade O-1 standard. This study proved that BOSBs from the mixture of betung and ampel strands have the potential to be developed due to having better physical and mechanical qualities than a single BOSB. Keywords: ampel (Bambusa vulgaris), bamboo oriented strand board, betung (Dendrocalamus asper), resin content, strand mixtures

show abstract

“…Reduction in IB is also due to the thermal degradation of the PU adhesive. In perspective, it is necessary to improve the bonding quality using different adhesives with higher thermal stability, such as MDI [21]. These can also contribute to limiting the reduction in MoR and MoE induced by the thermal treatment.…”

Section: Discussionmentioning

confidence: 99%

“…Mendes et al [20] showed that the physical properties of OSB made with Pinus taeda L. wood increased after thermal treatment, while the mechanical properties decreased. Direske et al [21] investigated the effects of different percentages of methylene dyphenildiisocyanate (MDI) adhesive on the properties of coniferous OSB kiln treated at 160 • C and 175 • C after production. To our knowledge, no research on the thermal treatment of poplar OSB has been performed.…”

Section: Introductionmentioning

confidence: 99%

Physico-Mechanical Properties of Thermally Treated Poplar OSB

Cetera

Negro

Cremonini

et al. 2018

Forests

View full text Add to dashboard Cite

Abstract:Oriented strand board (OSB) are widely marketed for several applications, from building to packaging. The manufacturing of poplar OSB has recently started in Northern Italy, representing a relevant innovation in the sector, given that this product is usually made of coniferous wood. Thermal treatment is nowadays widely used for increasing the dimensional stability and the durability of wood. The drawback is, however, that the mechanical performance of the treated wood product is reduced. The objective of this research was to analyze the effect of thermo-vacuum treatment on the characteristics of poplar OSB. To this purpose, boards 15 mm thick and with a density of 590 kg/m 3 were drawn from the standard production of the manufacturer and thermally treated under vacuum conditions at 190 • C for 2 h. Their mass loss, bending strength, modulus of elasticity, internal bond and swelling were determined. In addition, color change and wettability were studied before and after a weathering test. The thermal treatment significantly changed the properties of poplar OSB. The mass, the bending strength, the modulus of elasticity and the internal bond decreased with different intensities. The swelling after immersion in water decreased. The color switched toward a darker tone and the wettability decreased. After an accelerated weathering test (AWT), the color lightened, and the wettability increased. Overall, this study broadened the knowledge about the thermal treatment of this wood-based panel, which could enable new applications with particular attention to non-structural uses in humid conditions.

show abstract

Effects of MDI content on properties of thermally treated oriented strand board (OSB)

Cited by 18 publications

References 27 publications

Influence of the Strand Characteristics on the Properties of Oriented Strand Boards Obtained from Resinous and Broad-Leaved Fast-Growing Species

Influence of the Strand Characteristics on the Properties of Oriented Strand Boards Obtained from Resinous and Broad-Leaved Fast-Growing Species

Effects of Resin Content on the Characteristics of Bamboo Oriented Strand Board Prepared from Strands of Betung, Ampel, and Their Mixtures

Physico-Mechanical Properties of Thermally Treated Poplar OSB

Contact Info

Product

Resources

About