Wood Fiber Reinforced Thermoplastic and Thermosets Composites

In order to optimize the size of wood fiber reinforced polymer, and extend the application field of wood fiber reinforced polymer composites and improve the safety of their use, four size of wood fiber reinforced high-density polyethylene (HDPE) composites were prepared by forming mat-compression molding. The four kinds of fibers of different size include 80-120 mesh, 40-80 mesh, 20-40 mesh and 10-20 mesh fibers. The flexural performance, impact resistance performance and 24 hours creep - 24 hours recovery of the composites are studied. Fiber of 20-40 mesh presents the best flexural and impact resistance performance. The flexural strength, the elastic modulus and the impact strength reach 26.71MPa, 2.73Gpa and 6.88 KJ/m2 respectively. The impact performance of wood fiber/HDPE composites do not change a lot, while the fiber size increases from 10 to 80 mesh. However, the composites containing 80-120 mesh fibers has minimum impact performance. The creep performance of the wood fiber/HDPE composites with 80-120 mesh is the worst. After 24h creep test, the strain of the other three groups is almost the same. Creep recovery of the composites reinforced with 40-80 mesh fiber is the worst (61.74%). The creep recovery of the other three is above seven percent. Therefore, excessively large or small fiber size proves to be negative to improve the mechanical and creep performance, and polymer composites reinforced by them are not suitable for work under long-term load.

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Preparation of Composite-Fiber Reinforced External Wall Board without Asbestos

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.71-78.1617 ◽

2011 ◽

Vol 71-78 ◽

pp. 1617-1621 ◽

Cited By ~ 1

Author(s):

Ying Wang ◽

Peng Qi Wang ◽

Dan Jun Tan ◽

Jin Ping Zhao

Keyword(s):

Preparation Method ◽

Wood Fiber ◽

Composite Fiber ◽

Wood Powder ◽

Fiber Reinforced ◽

Plant Fibers ◽

External Wall ◽

Reinforcing Material ◽

Reinforcing Fiber ◽

Harmful Effects

Asbestos is used as reinforcing fiber in nearly all the current external wall board manufacturing process, but it has harmful effects on the human body. In this paper, composite-fiber reinforced external wall board without asbestos was successfully prepared using plant fibers as reinforcing material instead of asbestos by compression molding. Effect of the content of wood fiber, wood powder, quartz sand and water on the density and mechanical properties of the board were studied in this work. Besides, the optimized preparation method for composite-fiber reinforced external wall board without asbestos was achieved.

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Influence of Polar Monomers on the Performance of Wood Fiber Reinforced Polystyrene Composites. I. Evaluation of Critical Conditions

International Journal of Polymeric Materials ◽

10.1080/00914039008031512 ◽

1990 ◽

Vol 14 (3-4) ◽

pp. 165-189 ◽

Cited By ~ 17

Author(s):

D. Maldas ◽

B. V. Kokta

Keyword(s):

Wood Fiber ◽

Critical Conditions ◽

Fiber Reinforced ◽

Polar Monomers

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Effect of Extrusion Temperature on the Physico-Mechanical Properties of Unidirectional Wood Fiber-Reinforced Polylactic Acid Composite (WFRPC) Components Using Fused Deposition Modeling

Polymers ◽

10.3390/polym10090976 ◽

2018 ◽

Vol 10 (9) ◽

pp. 976 ◽

Cited By ~ 15

Author(s):

Teng-Chun Yang

Keyword(s):

Mechanical Properties ◽

Polylactic Acid ◽

Fused Deposition Modeling ◽

Wood Fiber ◽

Color Difference ◽

Extrusion Temperature ◽

Fiber Reinforced ◽

Substantial Impact ◽

Fused Deposition ◽

Deposition Modeling

Wood fiber-reinforced polylactic acid (PLA) composites (WFRPCs) were used as a filament to manufacture the unidirectional WFRPC components by means of fused deposition modeling (FDM). The physico-mechanical properties of the WFRPC components printed at different extrusion temperatures (200, 210, 220, and 230 °C) were determined. The results revealed that most of the physical properties (moisture content, surface roughness, water absorption rate, and thickness swelling rate) of the printed WFRPC component were not significantly influenced by extrusion temperature, while its density and color difference increased as the extrusion temperature increased. Additionally, the tensile and flexural properties of the FDM-printed WFRPC component decreased when the extrusion temperature was more than 200 °C, whereas the compressive strength and internal bond strength increased by 15.1% and 24.3%, respectively, when the extrusion temperature was increased from 200 to 230 °C. Furthermore, scanning electronic microscopy (SEM) demonstrated that the fracture surface of the tensile component printed at a higher extrusion temperature exhibited a better compatibility at fiber/PLA interfaces and good adhesion between the extruded filament segments. These results indicate that the FDM printing process using different extrusion temperatures has a substantial impact on the surface color, density, and mechanical properties of the printed WFRPC component.

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