Water Absorption, Thermal and Microstructural Properties of Plastic Composites Developed from Isoberlinia Doka Wood Sawdust and Polystyrene Wastes

2021 ◽  
Author(s):  
Adewale George Adeniyi ◽  
Joshua O. Ighalo ◽  
Sulyman A. Abdulkareem ◽  
Rebecca Akinwolemiwa
Keyword(s):  
Water Absorption ◽  
Microstructural Properties ◽  
Wood Sawdust ◽  
Plastic Composites

scholarly journals Effect of wood particle size on the water absorption of wood-plastic composites

2020 ◽  
Vol 5 (3) ◽  
pp. 069-079
Author(s):  
Peter Križan ◽  
Juraj Beniak ◽  
Miloš Matúš
Keyword(s):  
Particle Size ◽  
Water Absorption ◽  
Concentration Ratio ◽  
Raw Material ◽  
Wood Sawdust ◽  
Plastic Composites ◽  
Research Findings ◽  
Plastic Matrix ◽  
Recycled Hdpe

The main aim of this paper is to present the research findings which come out from the experimental determination of the influence of input raw material properties and composition on the water absorption of wood-plastic composites. During the WPCs production, important raw material parameters such as wood sawdust particle size, wood/plastic concentration ratio or type of plastic matrix can be recognized. In this research study, the aim was to produce WPCs of an acceptable and competitive level of quality which is determined from the final mechanical properties of WPCs. Particle size of wood sawdust used for production of WPC has significant influence on mechanical properties of composites and also on other important properties (water absorption, hardness, frost resistance, etc.). Using a variety combination of influencing variables the final quality of composites and also the operating parameters of the injection molding press can be improved. Their effect can be seen from the quality indicators and from the operating parameters of the injection press which has a direct impact on the production costs. The paper deals with the determination of the impact and the relationship between the input wood sawdust particles sizes, wood/plastic concentration ratio and water absorption of composites. By side intention of authors is to determine the possibilities of waste raw materials usage. The experimental research findings were obtained using a semi-operational injection molding press where the injection is provided by a working screw. As the input raw material, spruce sawdust, HDPE plastic matrix and recycled HDPE, represented by lids from PET bottles, was used. The effect of the input wood sawdust particle size on water absorption was determined according to a combination and default levels of wood/HDPE concentration ratio, using recycled HDPE instead of virgin HDPE and particle size of wood sawdust.

Determining the Effect of Wood Sawdust and Sand on the Compressive Strength and Water Absorption of Clay Pavers

2021 ◽  
pp. 130-141
Author(s):  
Hilaire Elenga ◽  
Ferland Ngoro-Elenga ◽  
Jude Nogelvi Ngakosso Ngolo ◽  
Timothée Nsongo ◽  
Thomas Tamo Tatietsé
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Wood Sawdust

Water Absorption and Swelling Behaviour of Wood Plastic Composites

2021 ◽  
pp. 195-212
Author(s):  
Sabarish Radoor ◽  
Jasila Karayil ◽  
Jyothi Mannekote Shivanna ◽  
Suchart Siengchin
Keyword(s):  
Water Absorption ◽  
Swelling Behaviour ◽  
Wood Plastic Composites ◽  
Plastic Composites

Study of Water Absorption Behavior in Wood Plastic Composites by Using Neutron Radiography Techniques

2003 ◽  
Vol 42 (5) ◽  
pp. 925-934 ◽  
Author(s):  
M. N. Islam ◽  
Mubarak A. Khan ◽  
M. K. Alam ◽  
M. A. Zaman ◽  
M. Matsubayashi
Keyword(s):  
Water Absorption ◽  
Neutron Radiography ◽  
Wood Plastic Composites ◽  
Plastic Composites

Properties of wood-plastic composites (WPCs) reinforced with extracted and delignified wood flour

Holzforschung ◽  
2014 ◽  
Vol 68 (8) ◽  
pp. 933-940 ◽  
Author(s):  
Yao Chen ◽  
Nicole M. Stark ◽  
Mandla A. Tshabalala ◽  
Jianmin Gao ◽  
Yongming Fan
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Mechanical Performance ◽  
Wood Flour ◽  
Hot Water ◽  
Sodium Chlorite ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Acetone Water ◽  
Full Factorial Experimental Design

Abstract The water sorption and mechanical properties of wood-plastic composites (WPCs) made of extracted and delignified wood flour (WF) has been investigated. WF was prepared by extraction with the solvent systems toluene/ethanol (TE), acetone/water (AW), and hot water (HW), and its delignification was conducted by means of sodium chlorite/acetic acid (AA) solution. A 24 full-factorial experimental design was employed to determine the effects of treatments and treatment combinations. WPCs were prepared with high-density polyethylene (HDPE) and treated WF was prepared by means of extrusion followed by injection molding, and the water absorption characteristics and mechanical properties of the products were evaluated. WPCs produced with extracted WF had lower water absorption rates and better mechanical properties than those made of untreated WF. WPCs containing delignified WF had higher water absorption rates and improved mechanical performance compared with those made of untreated WF.

Water Absorption of Wood Composite Modified by Basalt Glass Powder

2013 ◽  
Vol 821-822 ◽  
pp. 1168-1170 ◽  
Author(s):  
Hua Wu Liu ◽  
Kai Fang Xie ◽  
Wei Wei Hu ◽  
Han Sun ◽  
Shu Wei Yang ◽  
...  
Keyword(s):  
Water Absorption ◽  
Glass Powder ◽  
Medium Density Fiberboard ◽  
Moisture Sorption ◽  
Wood Composite ◽  
Wood Composites ◽  
Thickness Swelling ◽  
Basalt Glass ◽  
Wood Sawdust ◽  
Dimensional Variation

Moisture sorption of wood sawdust panel results in dimensional variation, deterioration of mechanical property and fungi attack, which may be improved by the reinforcement of waterproof material. In this study, the fir sawdust panel was reinforced by basalt glass particles with size smaller than 5 micron, in order to reduce moisture penetration. When the content of basalt glass powder was 15%, both the thickness swelling and 24 h water absorption rate of wood composites reached their minimum values, which were 2.7% and 11%, respectively. The thickness swelling was far smaller than the 45% upper limit of medium density fiberboard as described by standards GB/T17657-1999.

UTILIZING FILLER POWDER POWDER AND WOOD POWDER WITH POLYSTYRENE MATRIX AS A BASIC MATERIAL FOR MAKING PLASTIC WOOD COMPOSITE BOARD

2015 ◽  
Vol 13 (2) ◽  
Author(s):  
Cut Alya Audina ◽  
Zaimahwati Zaimahwati ◽  
Teuku Rihayat ◽  
Helmi Helmi
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Basic Material ◽  
Wood Composite ◽  
Wood Powder ◽  
Compressive Test ◽  
Composite Board ◽  
Wood Sawdust ◽  
Polystyrene Matrix ◽  
Filler Powder

Wood sawdust and eggshells are very easy to get, wherein the eggshell contains CaCO3, it will be used as a filler in the manufacture of composite boards and polystyrene as a binder (matrix). By varying the ratio of sawdust and eggshell 0:50, 10:40, 20:30, 30:20, 40:10 and 50: 0 (gr), we expect to get a quality composite board. This research analyzes compressive strength, water absorption and density. In this research, the first thing to do is a treatment consisting of diminution, sifting. Then proceed with board making. For the strength of the composite board, a compressive test is performed. From the test it was found that the greatest compressive firmness is owned by the board with a filler ratio of 20:30 which is 94.564 kg / cm2, the highest water absorption value is obtained on the board with a filler ratio of 50: 0 that is 31.517% and the largest density value obtained on the board with a filler ratio of 20: 30 which is 1,231 gr / cm3.

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