Effect of surface carbonization on mechanical properties of LVL

Wu, Yan; Chen, Hong; Zhou, Xiaoyan; Zhang, Zhankuang; Xu, Wei

doi:10.15376/biores.14.1.453-463

Cited by 14 publications

(7 citation statements)

References 28 publications

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“…This is because as the layer height decreases, the extrusion pressure of the 3D printer nozzle in the vertical direction increases, which makes the molten filament fully extruded at the interlayer adhesion interface (Qi et al 2023). This extrusion increases the bonding area of the contact surfaces of neighboring filaments, and it also promotes the infiltration and diffusion of the polymer molecules, which effectively improves the interlayer adhesion strength of the top/bottom shell (Wang et al 2019). With the increase of interlayer bonding strength, the PLA models were more resistant to bending damage.…”

Section: Effect Of Layer Height On Bending Performance Of Pla Modelsmentioning

confidence: 99%

Effect of selective enhancement on the bending performance of fused deposition methods 3D-printed PLA models

Wang,

Yu,

Jiang

et al. 2024

BioRes

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The top and bottom shells of fused deposition 3D-printed PLA models are exposed to the highest stresses. To improve the bending performance of PLA models under three-point bending conditions, the models were strengthened by a selective enhancement method. Several sets of PLA models were fabricated using FDM technology, and three-point bending experiments were conducted to compare the bending strength of PLA models when the layer height, top/bottom shell thickness, and extrusion rate were varied. The bending strength of the PLA models increased as the layer height of the top/bottom shell decreased, the thickness increased, and the extrusion rate increased. The average bending strength of the PLA models after selective enhancement was 84.4 MPa, and the average bending modulus of elasticity was 0.816 GPa, which were higher than the average bending strength of 68.6 MPa and the average bending modulus of elasticity of 0.736 GPa of the conventional groups. These results indicated that the selective enhancement method improved the bending performance of 3D-printed PLA models, and it also provided a reference for the improvement of the mechanical properties of the 3D-printed models with cellulose composite reinforced materials.

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Section: Effect Of Layer Height On Bending Performance Of Pla Modelsmentioning

confidence: 99%

Effect of selective enhancement on the bending performance of fused deposition methods 3D-printed PLA models

Wang,

Yu,

Jiang

et al. 2024

BioRes

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“…Thus, there are grooves and gaps between adjacent layers. The grooves and gaps are prone to stress concentration, which affects the interlayer adhesion performance of the formed parts (Wang et al 2019). Take the compression test as an example, when the "cylinder" formed part is axially compressed, with the increase of compression displacement, the transverse (X-Y direction) deformation of the formed part increases, showing obvious bulging deformation.…”

Section: Effect Of Immersion Polishing On the Mechanical Performance ...mentioning

confidence: 99%

Immersion polishing post-treatment of PLA 3D printed formed parts on its surface and mechanical performance

Wang,

Zhang,

Ding

et al. 2023

BioRes

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Steps were taken to improve the surface and mechanical performance of PLA 3D printed formed parts, reduce the “step texture” produced by the fused deposition process, and improve the quality of 3D printing by means of post-treatment. The PLA 3D formed parts were immersion polished with chloroform solution to investigate the effects of immersion polishing on the surface roughness, surface gloss, mechanical properties, and other factors of PLA formed parts. The results of the pre-experiment showed that 90% of the effect was due to the optimal concentration value of chloroform solution and 10% was the optimization of time for immersion polishing. Under the pre-experimental conditions, the surface roughness of the formed parts was reduced by 87%, and the surface gloss was increased by 510%, the surface quality and gloss were significantly improved, and the “step texture” was significantly reduced; meanwhile, the tensile and compressive ultimate strength of the formed parts were increased by 9.41% and 13.09%, respectively, and the mechanical performance were improved, and the quality of 3D printing post-treatment was significantly improved.

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“…The mechanical value F at the fracture point of the sample was recorded. Subsequently, the tensile strength of the sample was calculated. σ ( M P a ) = F ( N ) / S ( m m 2 ) where S is the initial cross-sectional area of the sample along the tensile direction …”

Section: Test Sectionmentioning

confidence: 99%

Multilayer Transparent Wood with Log Color Composed of Different Tree Species

Zhou

Wang

et al. 2022

ACS Omega

Self Cite

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In this experiment, a multilayer transparent wood with different surface and core layers of tree species was prepared, which has log color. The purpose is to explore the feasibility of preparing multilayer transparent wood from different tree species as raw materials. The experiment first removed partial lignin from the veneers to obtain the wood templates. Then, tree species with rich texture and color as the surface layer wood and tree species with less texture as the core and bottom wood were selected. Finally, the resin-impregnated wood templates were laminated and dried to obtain samples. The results show that wood fiber and resin have good coordination, and the laminated structure is conducive to weakening the anisotropy of transparent wood. Transparent wood has better mechanical property and hydrophobicity than original wood. The above shows that this transparent wood has a large elastic mechanism for the selection of tree species, and the thickness optics can be adjusted according to tree species and wood layers. It has good application prospects in interior decoration or as outdoor structural material.

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Effect of surface carbonization on mechanical properties of LVL

Cited by 14 publications

References 28 publications

Effect of selective enhancement on the bending performance of fused deposition methods 3D-printed PLA models

Effect of selective enhancement on the bending performance of fused deposition methods 3D-printed PLA models

Immersion polishing post-treatment of PLA 3D printed formed parts on its surface and mechanical performance

Multilayer Transparent Wood with Log Color Composed of Different Tree Species

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