Reducing resin content and board density without adversely affecting the mechanical properties of particleboard through controlling particle size

2011 ◽  
Vol 22 (4) ◽  
pp. 659-664 ◽  
Author(s):  
Mohammad Arabi ◽  
Mehdi Faezipour ◽  
Heydar Gholizadeh
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Resin Content ◽  
Board Density

Effects of Particle Sizes, Resin Content and Board Densities on the Properties of Phenol Formaldehyde Particleboard from Oil Palm Trunk Particles

2010 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Jamaludin Kasim ◽  
Siti Zalifah Mahmud ◽  
Nurrohana Ahmad ◽  
Shaikh Abdul Karim Yamani ◽  
Siti Nor Ain Tamiran ◽  
...  
Keyword(s):  
Particle Size ◽  
Water Absorption ◽  
Oil Palm ◽  
Phenol Formaldehyde ◽  
Resin Content ◽  
Thickness Swelling ◽  
Swelling Properties ◽  
Board Density ◽  
Oil Palm Trunk ◽  
Dust Extractor

Twenty five year old oil palm trunk supplied by MPOB, Bangi, Selangor, was converted into strands using a disk flaker and into particles using a dust extractor. Particleboard was produced using phenolic resin at 7, 9 and 11 % compositions based on particle weight used Particle size varied from 1.0-2.0 mm and the board density varied from 500-700 kg m-3. No significant improvement in MOR, MOE and IB was observed when the particle size was increased from 1.0 to 2.0 mm. However, with larger particle size the water absorption and thickness swelling properties improved. Increasing the resin content from 7-11 % significantly increases the mechanical properties and improves the water absorption and thickness swelling properties. Increasing the board density results in an increase in MOR, MOE and IB and a significant increase in the water absorption and thickness swelling properties. Particleboard with a high board density and resin content of more than 9 %met the minimum British Standard requirements. 

Effects of Particle Sizes, Resin Content and Board Densities on the Properties of Phenol Formaldehyde Particleboard from Oil Palm Trunk Particles

2010 ◽  
Vol 7 (1) ◽  
pp. 1 ◽  
Author(s):  
Jamaludin Kasim ◽  
Siti Zalifah Mahmud ◽  
Nurrohana Ahmad ◽  
Shaikh Abdul Karim Yamani ◽  
Siti Nor Ain Tamiran ◽  
...  
Keyword(s):  
Particle Size ◽  
Water Absorption ◽  
Oil Palm ◽  
Phenol Formaldehyde ◽  
Resin Content ◽  
Thickness Swelling ◽  
Swelling Properties ◽  
Board Density ◽  
Oil Palm Trunk ◽  
Dust Extractor

Twentyfive year old oil palm trunk supplied by MPOB, Bangi, Selangor, was converted into strands using a disk flaker and into particles using a dust extractor. Particleboard was produced using phenolic resin at 7, 9 and 11 % compositions based on particle weight used Particle size variedfrom 1.0-2.0 mm and the board density varied from 500-700 kg m'. No significant improvement in MaR, MOE and IB was observed when the particle size was increased from 1.0 to 2.0 mm. However, with larger particle size the water absorption and thickness swelling properties improved. Increasing the resin content from 7-11 % significantly increases the mechanical properties and improves the water absorption and thickness swelling properties. Increasing the board density results in an increase in MaR, MOE and1Banda significant increase in the water absorption and thickness swelling properties. Particleboard with a high board density and resin content ofmore than 9 % met the minimum British Standard requirements.

scholarly journals Size Effect of Core Strands on the Major Physical and Mechanical Properties of Oriented Strand Boards from Fast Growing Tropical Species

2021 ◽  
Author(s):  
Wan Mohd Nazri Wan Abdul Rahman ◽  
Nur Sakinah Mohamed Tamat ◽  
Nor Yuziah Mohd Yunus ◽  
Jamaludin Kasim
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Major Axis ◽  
Resin Content ◽  
Tropical Species ◽  
Thickness Swelling ◽  
Bending Properties ◽  
Board Density ◽  
Fast Growing ◽  
The Face

Oriented strand board (OSB) is generally used for sheathing in residential walls, floors, and roofs. Because of its low pricing and utilisation of tiny diameter logs from fast-growing trees and thinning logs as raw materials, OSB is anticipated to gain popularity. In chapter, board properties of OSB using smaller strand size of Leucaena leucocephala as core layer had been studied. Small strand size of S3 (length = 75 mm, width = 3.2 to 6.3 mm) was located in the middle layer of the board while bigger strand sizes of S1 (length = 75 mm, width = 12.7 to 19.0 mm) and S2 (length = 75 mm, width = 6.3 to 12.7 mm) were located at the face and back layers. Utilization of smaller strands (S3) in the middle layers may yield boards that have better physical and mechanical properties. Except for MOR in the minor axis, board density and resin content were shown to have a substantial impact on physical and mechanical properties. Except for MOR in the major axis, strand size had little affected on physical and mechanical properties. The effects of board density on mechanical properties were discovered to affect significantly different. With a positive correlation, board density had a significant effect on thickness swelling. Between S1+S3 and S2+S3 strand size, there is no significant effect on bending properties, internal bond strength and thickness swelling. The effect of resin content on bending properties revealed a significant difference of MOR in major axis, as well as MOE values in both major and minor axes. Even when the resin content was as low as 5%, all treatments of OSB passed the general requirement of general purpose OSB.

scholarly journals Mechanical and Physical Properties of Kelempayan (Neolamarckia Cadamba) Particleboard

2018 ◽  
Vol 7 (4.26) ◽  
pp. 209
Author(s):  
Nazri W.M ◽  
Nur Sakinah M.T ◽  
Jamalu K
Keyword(s):  
Particle Size ◽  
Phenol Formaldehyde ◽  
Resin Content ◽  
Modulus Of Rupture ◽  
Hot Press ◽  
Thickness Swelling ◽  
Board Density ◽  
Press Temperature ◽  
Mechanical And Physical Properties

The aim of this study was to investigate the role of the particle size, board density, resin content and hot press temperature on the properties of particleboard composite. Single-layered Kelempayan (Neolamarckia cadamba) particleboards bonded with phenol formaldehyde (PF) resins were manufactured. The boards were fabricated with three different particle sizes (0.5, 1.0 and 2.0 mm), two different board densities (600 and 700 kgm-3), two different resin contents (9 and 11%) and two different hot press temperatures (155 and 165˚C). The boards produced were evaluated for their modulus of elasticity (MOE), modulus of rupture (MOR), internal bond (IB) and thickness swelling (TS) in accordance with the Malaysia Standards. The study revealed that boards from smaller particles, higher resin contents and higher hot press temperatures gave higher MOE, MOR, IB and improved the TS. However, boards with higher densities gave higher MOE, MOR, IB and TS. Overall, the boards with the particle size of 0.5 mm, board density of 700 kgm-3, resin content of 11% and 165˚C of hot press temperature exhibited the greatest performance and were able to fulfill the Malaysia Standard specifications for furniture grade used in dry (PF1) and humid (PF2) and also for load-bearing applications in dry (PS1).  

Study of Processing a New Decorative Light Density Board with Micron Wood Flakes

2011 ◽  
Vol 183-185 ◽  
pp. 2073-2077
Author(s):  
Alun ◽  
Yi Xing Liu ◽  
Yan Ma ◽  
Xian Quan Zhang ◽  
Ri Dun Hu
Keyword(s):  
Mechanical Properties ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Solid Wood ◽  
Resin Content ◽  
Paulownia Tomentosa ◽  
Board Density ◽  
Large Size ◽  
Light Density ◽  
Northeast Of China

In this paper, we focused on a new decorative light density board with a new fiber unit-- micron wood flake, which were large size in length and a very small size in thickness. With these flakes, we processed the light density board in the laboratory, Cunninghamia lanceolata abounded in Fujian Province, Paulownia tomentosa from Anhui Province, L.gemelini Rupr., and Betulaceae abounded in Northeast of China were selected as raw materials, and modified UF as resin. Then several single factor experiments were conducted to discuss the effects of the factors on the physical and mechanical properties of the board, such as board density, resin content, and species of trees as well. The results showed that the density and resin content had significant effects on the mechanical properties of the board. The physical and mechanical properties of the samples, density ranged from 0.3 to 0.5g/cm3, reached Japanese Light Particleboard Standard JISA5908, and the thermal conduction of the board processed with the four species tree were just like solid wood.

Effects of particle sizes, wood to cement ratio and chemical additives on the properties of sesendok (Endospermum Diadenum) cement-bonded particleboard

2010 ◽  
Vol 7 (2) ◽  
pp. 57
Author(s):  
Jamaludin Kasim ◽  
Shaikh Abdul Karim Yamani ◽  
Ahmad Firdaus Mat Hedzir ◽  
Ahmad Syafiq Badrul Hisham ◽  
Mohd Arif Fikri Mohamad Adnan
Keyword(s):  
Mechanical Properties ◽  
Experimental Investigation ◽  
Cement Content ◽  
Particle Sizes ◽  
Thickness Swelling ◽  
Chemical Additives ◽  
Board Density ◽  
Cement Ratio ◽  
Aluminium Silicate ◽  
Cement Board

An experimental investigation was performed to evaluate the properties of cement-bonded particleboard made from Sesendok wood. The target board density was set at a standard 1200 kg m". The effect offarticle size, wood to cement ratio and the addition ofsodium silicate and aluminium silicate on the wood cement board properties has been evaluated. A change ofparticle size from 1.0 mm to 2.0 mm has a significant effect on the mechanical properties, however the physical properties deteriorate. Increasing the wood to cement ratio from 1:2.25 to 1:3 decreases the modulus ofrupture (MOR) by 11% and the addition ofsodium silicate improves valuesfurther by about 28% compared to the addition ofaluminum silicate. The modulus ofelasticity (MOE) in general increases with increasing cement content, but is not significantly affected by the addition ofsodium silicate or aluminium silicate, although the addition of their mixture (sodium silicate andaluminium silicate) consistentlyyields greater MOE values. Water absorption and thickness swelling is significantly affected by the inclusion ofadditives and better values are attained using higher wood to cement ratios.

scholarly journals Experimental Analysis of the Mechanical Properties and Resistivity of Tectonic Coal Samples with Different Particle Sizes

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2303
Author(s):  
Congyu Zhong ◽  
Liwen Cao ◽  
Jishi Geng ◽  
Zhihao Jiang ◽  
Shuai Zhang
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Compressive Strength ◽  
Elastic Modulus ◽  
Uniaxial Compressive Strength ◽  
Coalbed Methane ◽  
Coal Sample ◽  
Fine Particles ◽  
Particle Sizes ◽  
Tectonic Coal

Because of its weak cementation and abundant pores and cracks, it is difficult to obtain suitable samples of tectonic coal to test its mechanical properties. Therefore, the research and development of coalbed methane drilling and mining technology are restricted. In this study, tectonic coal samples are remodeled with different particle sizes to test the mechanical parameters and loading resistivity. The research results show that the particle size and gradation of tectonic coal significantly impact its uniaxial compressive strength and elastic modulus and affect changes in resistivity. As the converted particle size increases, the uniaxial compressive strength and elastic modulus decrease first and then tend to remain unchanged. The strength of the single-particle gradation coal sample decreases from 0.867 to 0.433 MPa and the elastic modulus decreases from 59.28 to 41.63 MPa with increasing particle size. The change in resistivity of the coal sample increases with increasing particle size, and the degree of resistivity variation decreases during the coal sample failure stage. In composite-particle gradation, the proportion of fine particles in the tectonic coal sample increases from 33% to 80%. Its strength and elastic modulus increase from 0.996 to 1.31 MPa and 83.96 to 125.4 MPa, respectively, and the resistivity change degree decreases. The proportion of medium particles or coarse particles increases, and the sample strength, elastic modulus, and resistivity changes all decrease.

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