High density polyethylene matrix composite as reinforcing agent in medium density fiberboards

Barnasky, Ricardo Ritter de Souza; Cunha, Alexsandro Bayestorff da; Oliveira, Amanda Dantas de; Brand, Martha Andréia; Silva, Gabriela Escobar Hochmuller da; Souza, Luana Muller de; Buss, Rodrigo

doi:10.1177/0021998320931913

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…The fiberboards contain unique and advantageous properties compared to solid wood products, as they have better dimensional stability, good machinability, and resistance to temperature changes, besides being versatile and without cracks [4]. On the other hand, as a material from wood, it presents dimensional changes when subjected to environments with variations in humidity [5].…”

Section: Introductionmentioning

confidence: 99%

Improvement of the properties of hardboard with heat treatment application

et al. 2023

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The attempt to face the limitations of wood-based materials, especially concerning the relationship with water, is still a considerable gap in research on this subject. The present work proposes the accomplishment of thermal treatment in fiberboard-type hardboard, using different temperatures and times, to evaluate the effect on the physical-mechanical properties. The parameters of the heat treatment were temperatures of 120 and 160 °C and times of 20 and 40 min. The hardboards were individually heat treated in a kiln. The characterization was performed from physical tests such as bulk density, moisture content, water absorption (2 and 24 h), thickness swelling (2 and 24 h); and mechanical properties of flexural strength. The treatment with a temperature of 160 °C for 40 min showed the lowest values of water absorption in 24 h (34%). Thickness swelling was lower compared to control, for all the treatments applied. Regarding flexural strength, the treatment that adopted the 160 °C for 20 min showed the highest MOR value (26.3 MPa). In general, the performance of heat treatments positively influenced the physical and mechanical properties of the hardboards, being an interesting alternative in the development of products for applications in internal environments.

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Section: Introductionmentioning

confidence: 99%

Improvement of the properties of hardboard with heat treatment application

et al. 2023

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Biopolyethylene/Morinda citrifolia cellulosic biocomposites: The impact of chemical crosslinking and PE‐g‐MA compatibilizer

et al. 2021

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The development of new ecological materials to promote sustainability is being encouraged. Crosslinked biopolyethylene (BioPE)/noni flour (Morinda citrifolia) biocomposites were prepared using maleic anhydride-grafted polyethylene (PE-g-MA) and dicumyl peroxide (DCP). The biocomposites were processed in an internal mixer and injection molded. Torque rheometry, Izod impact strength, tensile strength, heat deflection temperature (HDT), differential scanning calorimetry (DSC), thermogravimetry (TG), and scanning electron microscopy (SEM) properties were investigated. Torque rheometry curves suggest that the biocomposites did crosslink due to the DCP attack on the BioPE chain. The BioPE/noni flour/PE-g-MA formulation with 0.5% and 1% DCP produced a higher level of crosslinking. As a result, the mechanical properties (impact strength, elastic modulus, and tensile strength) were improved. SEM showed fractured noni flour particles in the BioPE matrix with the formation of a tubular structure. The HDT increased, suggesting that the biocomposites exhibit enhanced thermomechanical strength. Furthermore, the biocomposites thermal properties obtained by DSC underwent few modifications. The TG results showed that the crosslinked biocomposites have better thermal stability than the noncrosslinked biocomposites. The crosslinking process of BioPE/noni flour biocomposites with the PE-g-MA/DCP hybrid is an effective way to improve the performance of these materials.

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High density polyethylene matrix composite as reinforcing agent in medium density fiberboards

Cited by 2 publications

References 33 publications

Improvement of the properties of hardboard with heat treatment application

Improvement of the properties of hardboard with heat treatment application

Biopolyethylene/Morinda citrifolia cellulosic biocomposites: The impact of chemical crosslinking and PE‐g‐MA compatibilizer

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