Bio-based composites fabricated from wood fibers through self-bonding technology

Timber Acacia mangium (Acacia mangium, Willd) for Furniture. The study aims to determine the mechanical and physical properties and the decorative value (color and fiber) wood of acacia mangium with using finishing materials. This type of finishing material used is ultran lasur natural dof ,ultran lasur classic teak, aqua politur clear dof, aqua politur akasia dan aqua politur cherry. After finishing the wood is stored for 3 months. Test parameters were observed, namely, physical and mechanical properties of wood, adhesion of finishing materials, color and appearance of the fiber, and timber dimensions expansion. The results showed that the mechanical physical properties of acacia wood qualified SNI. 01-0608-89 about the physical and mechanical properties of wood for furniture, air dry the moisture content from 13.78 to 14.89%, flexural strength from 509.25 to 680.50 kg/cm2, and compressive strength parallel to fiber 342.1 - 412.9 kg/cm2. Finishing the treatment process using five types of finishing materials can increase the decorative value (color and fiber) wood. Before finishing the process of acacia mangium wood has the appearance of colors and fibers and less attractive (scale scores 2-3), after finishing acacia wood fibers have the appearance of colors and interesting and very interesting (scale 4-5).Keywords: mangium wood, mechanical properties, decorative value, finishing, furniture.

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PREPARATION AND CHARACTERIZATION OF REPROCESSED COMPOSITES OF POLYPROPYLENE REINFORCED BY WOOD FIBERS: PHYSICAL AND MECHANICAL PROPERTIES

10.26678/abcm.cobem2017.cob17-1636 ◽

2017 ◽

Author(s):

Thais Helena Sydenstricker Flores-Sahagun ◽

Kelly Priscila Agapito ◽

ROSA MARIA JIMENEZ AMEZCUA ◽

Felipe Jedyn

Keyword(s):

Mechanical Properties ◽

Physical And Mechanical Properties ◽

Wood Fibers

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Fine-pitch bonding technology with surface planarized solder micro-bump/polymer hybrid for 3D integration

Japanese Journal of Applied Physics ◽

10.35848/1347-4065/abd69c ◽

2020 ◽

Author(s):

Fumihiro Inoue ◽

Jaber Derakhshandeh ◽

Melina Lofrano ◽

Eric Beyne

Keyword(s):

3D Integration ◽

Polymer Hybrid ◽

Fine Pitch ◽

Bonding Technology

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PURPOSE ULTIMATE BEARING CAPACITY OF GLUED WASHERS AT TRANSFER EFFORTS ANGLE TO WOOD FIBERS

10.21506/j.ponte.2017.2.25 ◽

2017 ◽

Vol 73 (2) ◽

Author(s):

Garkin Igor ◽

Ariskin Maxim

Keyword(s):

Bearing Capacity ◽

Ultimate Bearing Capacity ◽

Wood Fibers

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Symmetric Nature of Stress Distribution in the Elastic-Plastic Range of Pinus L. Pine Wood Samples Determined Experimentally and Using the Finite Element Method (FEM)

Symmetry ◽

10.3390/sym13010039 ◽

2020 ◽

Vol 13 (1) ◽

pp. 39

Author(s):

Łukasz Warguła ◽

Dominik Wojtkowiak ◽

Mateusz Kukla ◽

Krzysztof Talaśka

Keyword(s):

Mechanical Properties ◽

Finite Element ◽

Stress Distribution ◽

Moisture Content ◽

Tool Geometry ◽

Wood Fibers ◽

Data Set ◽

Plastic Deformations ◽

Pine Wood ◽

Elastic Plastic

This article presents the results of experimental research on the mechanical properties of pine wood (Pinus L. Sp. Pl. 1000. 1753). In the course of the research process, stress-strain curves were determined for cases of tensile, compression and shear of standardized shapes samples. The collected data set was used to determine several material constants such as: modulus of elasticity, shear modulus or yield point. The aim of the research was to determine the material properties necessary to develop the model used in the finite element analysis (FEM), which demonstrates the symmetrical nature of the stress distribution in the sample. This model will be used to analyze the process of grinding wood base materials in terms of the peak cutting force estimation and the tool geometry influence determination. The main purpose of the developed model will be to determine the maximum stress value necessary to estimate the destructive force for the tested wood sample. The tests were carried out for timber of around 8.74% and 19.9% moisture content (MC). Significant differences were found between the mechanical properties of wood depending on moisture content and the direction of the applied force depending on the arrangement of wood fibers. Unlike other studies in the literature, this one relates to all three stress states (tensile, compression and shear) in all significant directions (anatomical). To verify the usability of the determined mechanical parameters of wood, all three strength tests (tensile, compression and shear) were mapped in the FEM analysis. The accuracy of the model in determining the maximum destructive force of the material is equal to the average 8% (for tensile testing 14%, compression 2.5%, shear 6.5%), while the average coverage of the FEM characteristic with the results of the strength test in the field of elastic-plastic deformations with the adopted ±15% error overlap on average by about 77%. The analyses were performed in the ABAQUS/Standard 2020 program in the field of elastic-plastic deformations. Research with the use of numerical models after extension with a damage model will enable the design of energy-saving and durable grinding machines.

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Non-Wood Fibers: Relationships of Fiber Properties with Pulp Properties

ACS Omega ◽

10.1021/acsomega.1c02933 ◽

2021 ◽

Author(s):

Taslima Ferdous ◽

Yonghao Ni ◽

Mohammad Abdul Quaiyyum ◽

Mohammad Nashir Uddin ◽

Md Sarwar Jahan

Keyword(s):

Wood Fibers ◽

Fiber Properties ◽

Pulp Properties

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Dielectric Properties of Wood-Polymer Composites: Effects of Frequency, Fiber Nature, Proportion, and Chemical Composition

Journal of Composites Science ◽

10.3390/jcs5060141 ◽

2021 ◽

Vol 5 (6) ◽

pp. 141

Author(s):

Imen Elloumi ◽

Ahmed Koubaa ◽

Wassim Kharrat ◽

Chedly Bradai ◽

Ahmed Elloumi

Keyword(s):

Dielectric Properties ◽

Polymer Composites ◽

Wide Frequency Range ◽

Dielectric Constants ◽

Cellulose Content ◽

Wood Fibers ◽

Low Frequencies ◽

Wood Polymer ◽

Wood Polymer Composites ◽

New Applications

The characterization of the dielectric properties of wood–polymer composites (WPCs) is essential to understand their interaction with electromagnetic fields and evaluate their potential use for new applications. Thus, dielectric spectroscopy monitored the evolution of the dielectric properties of WPCs over a wide frequency range of 1 MHz to 1 GHz. WPCs were prepared using mixtures of different proportions (40%, 50%, and 60%) of wood and bark fibers from various species, high-density polyethylene, and maleated polyethylene (3%) by a two-step process, extrusion and compression molding. Results indicated that wood fibers modify the resistivity of polyethylene at low frequencies but have no effect at microwave frequencies. Increasing the fiber content increases the composites’ dielectric properties. The fibers’ cellulose content explains the variation in the dielectric properties of composites reinforced with fibers from different wood species. Indeed, composites with high cellulose content show higher dielectric constants.

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