scholarly journals KONDISI OPTIMUM PROSES KEMPA PANAS DALAM PEMBUATAN PAPAN PARTIKEL DENGAN PEREKAT KITOSAN

PERENNIAL ◽  
2019 ◽  
Vol 15 (2) ◽  
pp. 67
Author(s):  
Lestian Lindangan ◽  
Beta Putranto ◽  
Suhasman Suhasman ◽  
Agussalim Agussalim
Keyword(s):  
Modulus Of Elasticity ◽  
Significant Interaction ◽  
Physical And Mechanical Properties ◽  
Optimum Combination ◽  
Modulus Of Rupture ◽  
Thickness Swelling ◽  
Significant Interaction Effect ◽  
Pressing Time ◽  
Compression Time ◽  
Different Temperatures

Shrimp skin contains chitin that is the second largest biopolymer after cellulose. The chitin can be isolated to produce chitosan. Chitosan is a natural adhesive that can be applied in producing particleboards to substitute formaldehyde-based adhesives. The purpose of this study was to analyze the hot-pressing condition in term of temperature and pressing time on the physical and mechanical properties of the particleboards produced by using chitosan as adhesives. The particleboards were made with the size of 25x25x0.7 cm and target density of 0.75 g/cm3. The particleboards were produced using different temperatures (160ºC, 180ºC, and 200ºC) and pressing times (9, 12, and 15 minutes. The results showed that the chitosan produced met the standards, and temperature and compression time had a significant interaction effect on the thickness swelling and modulus of elasticity. The optimum combination of temperature and pressing time is 180ºC and 12 minutes, respectively. The produced boards have the characteristics of moisture content 12.2%, density 0.81, water absorption 84.47%, thickness swelling 19.73%, modulus of rupture 143.36 kg/cm2, modulus of elasticity 23,367.79 kg/cm2, and internal bonding 9.03 kg/cm2.

scholarly journals INFLUENCE OF THERMAL MODIFICATION ON THE PHYSICAL AND MECHANICAL PROPERTIES OF Eucalyptus badjensis MIXED PARTICLEBOARD / OSB PANELS

FLORESTA ◽  
2021 ◽  
Vol 51 (2) ◽  
pp. 419
Author(s):  
Giuliano Ferreira Pereira ◽  
Setsuo Iwakiri ◽  
Rosilani Trianoski ◽  
Polliana D'angelo Rios ◽  
Renan Zunta Raia
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Phenol Formaldehyde ◽  
Physical And Mechanical Properties ◽  
Dry Mass ◽  
Thermal Modification ◽  
Modulus Of Rupture ◽  
Thickness Swelling ◽  
Swelling Properties ◽  
Different Temperatures

The objective of this research was to evaluate the effects of thermal modifications, at different temperatures and exposure times, on the technological properties of mixed particleboard / OSB panels made out of Eucalyptus badjensis. Using the wood of Eucalyptus badjensis, Particleboard, OSB and mixed Particleboard/OSB panels (control and thermally modified) were manufactured. The mixed panels’ thermal modification was carried out under three temperatures (180ºC, 200ºC and 220ºC) and two exposure times (10 minutes and 12 minutes). For the panels’ manufacturing, 6% of phenol-formaldehyde adhesive and 1% of paraffin were employed, which was calculated based on the particles’ dry mass. The water absorption and thickness swelling properties were evaluated after 2 and 24 hours of immersion, in addition to the panels’ modulus of elasticity, modulus of rupture and internal bond. Based on the results, we were able to conclude that the thermal modification affected most of the physical properties positively. From the different exposure times studied, the most effective one was the period of 12 minutes, especially for water absorption after 2 hours, which caused a reduction of 11.27%. In turn, the most effective temperature was of 220ºC, highlighting the thickness swelling after 24 hours, which caused a swelling decrease of 23.76% in comparison with the control panels. Regarding the mechanical properties, the thermal modification, in terms of the studied exposure times and temperatures, did not affect the results of the mixed particleboard /OSB panels. 

scholarly journals Effects of thermo-hydro-mechanical treatments on various physical and mechanical properties of poplar (Populus) wood

BioResources ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. 9596-9610
Author(s):  
Yali Shao ◽  
Lili Li ◽  
Zhangjing Chen ◽  
Sunguo Wang ◽  
Ximing Wang
Keyword(s):  
Mechanical Properties ◽  
Thermal Treatment ◽  
Modulus Of Elasticity ◽  
Mechanical Treatment ◽  
Elasticity Modulus ◽  
Physical And Mechanical Properties ◽  
Modulus Of Rupture ◽  
Compression Rate ◽  
Thickness Swelling ◽  
Maximum Thickness

Poplar (Populus) wood was subjected in this work to thermo-hydro-mechanical treatment. The influence of the treatment parameters on the physical and mechanical properties were investigated. The wood samples were densified under three compression ratios (0%, 30%, and 50%), and thermally treated at three temperatures (180 °C, 200 °C, and 220 °C), at three thermal treatment durations (3 h, 4 h, and 5 h). The density, modulus of elasticity, modulus of rupture, radial hardness, and thickness swelling were measured. The results showed that the densities of the samples increased by 36.6% to 49.7%. As the compression rate increased, the temperature, duration, modulus of elasticity, modulus of rupture, and hardness increased. However, the dimensions of the densified samples were less stable. Compared to the densified samples, the maximum thickness swelling could be reduced by 74% (from 29.7% to 7.8%) when subjected to a thermal treatment at 220 °C for 3 h.

scholarly journals Physical and Mechanical Properties Evaluation of Corncob and Sawdust Cement Bonded Ceiling Boards

2019 ◽  
Vol 42 ◽  
pp. 65-75 ◽  
Author(s):  
Atoyebi Olumoyewa Dotun ◽  
Odeyemi Samson Olalekan ◽  
Azeez Lateef Olugbenga ◽  
Modupe Abayomi Emmanuel
Keyword(s):  
Mechanical Properties ◽  
Modulus Of Elasticity ◽  
Cement Content ◽  
Physical And Mechanical Properties ◽  
American National Standard Institute ◽  
Mechanical Tests ◽  
Industrial Wastes ◽  
Modulus Of Rupture ◽  
National Standard ◽  
Thickness Swelling

This study considered the production of composite ceiling boards from both agricultural and industrial wastes. Boards with different blending proportions by weight of cement, corncob and sawdust (Cem:Ccb:Swd) were produced and tested. Physical and mechanical tests such as Water Absorption (WA), Thickness Swelling (TS), Modulus of Elasticity (MOE) and Modulus of Rupture (MOR) were carried out on the products. The findings revealed that the board with Cem:Ccb:Swd blending proportion 50:10:40 gave the highest values of MOE and MOR and also had the lowest values of WA and TS. The MOE and MOR values of 3.432 are both higher than the minimum values of 550 N/mm2 and 3 N/mm2 specified for MOE and MOR respectively by the American National Standard Institute, for general-use particle boards. The cement content is inversely proportional to the physical properties and directly proportional to the mechanical properties.

scholarly journals Pengaruh Suhu dan Waktu Kempa Terhadap Sifat Fisik dan Mekanik Papan Komposit dari Serat Tkks Berperekat Gambir Berlapis Anyaman Bambu

2018 ◽  
Vol 13 (2) ◽  
pp. 54
Author(s):  
Junaidi -
Keyword(s):  
Moisture Content ◽  
Physical And Mechanical Properties ◽  
Layered Composite ◽  
National Standards ◽  
Raw Material ◽  
Modulus Of Rupture ◽  
Thickness Swelling ◽  
Composite Board ◽  
Empty Fruit Bunches ◽  
Pressing Time

Fiber from oil palm empty fruit bunches (OPEFB) can be used as a raw material for the production of composite board.  Gambier can be used in a natural adhesive because of its high tannin content.  Appropriate material to veneer the board and the correct temperature and pressing time are needed to improve the quality of this composite board. This research was to discover the optimal temperature, needed to make woven bamboo veneer composite board from OPEFB fiber and  gambier based adhesive that can fulfill the Indonesian National Standards for veneered composite boards and the pressing time required for the board to reach thermal equilibrium. Results showed that both temperature and pressing time have a significant influence on density, moisture content, thickness swelling and modulus of rupture (MOR) of the boards but not on the internal bond strength or the compression strength parallel to the grain.  Multi-layered composite board pressed at 1300C has weaker physical and mechanical properties than that pressed at  1450C, or 1600C.  Twenty-five minutes of pressing time yielded a better product than 15 minutes and the combination of 25 minutes and 1450C proved to be optimal for the curing of the gambier based adhesive used with 8.4% moisture content fibers. Use of woven bamboo veneer resulted in boards that reached the density, moisture content, thickness swelling at 24 hours (PT24) and MOR National standards SNI 03-2105-2006 for standard veneered particle board however it failed to reach the standard for modulus of elasticity (MOE). The bonding strength of the boards reached the Nation Standard SNI 01-5008.7-1999 of 3.5 kg/cm2 minimum for structural veneered boards.

scholarly journals Sifat Fisis dan Mekanis Papan Semen dari Serat Tandan Kosong Kelapa Sawit (The Physical and Mechanical Properties of Cement Board Made from Oil Palm Empty Fruit Bunches Fibers)

2016 ◽  
Vol 8 (2) ◽  
pp. 43-52 ◽  
Author(s):  
Djoko Purwanto
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Oil Palm ◽  
Modulus Of Elasticity ◽  
Physical And Mechanical Properties ◽  
Modulus Of Rupture ◽  
Thickness Swelling ◽  
Empty Fruit Bunches ◽  
Screw Withdrawal ◽  
Cement Board

Oil palm empty fruit bunches (OPEFB) fiber were industrial waste that has not been widely used by the community, only stacked and cause odors that interfere with the surrounding environment. This research studied the utilization of OPEFB fiber for cement board products using cement as resin and CaCl2 as accelerator. Laboratory scale cement board made from OPEFB fiber were mixed with cement, and CaCl2. The composition of fiber and cement were 1:1, 1:1.5, 1:2, and CaCl2 variations were 0%, 1% and 3%. A mixture of fibers, cement and CaCl2 was compressed at the pressure of 4 ton for 24 hours. The cement boards were tested for physical and mechanical properties according to JIS A 5417-1992, and the results were compared to the requirements of the cement board JIS A 5417-1992. Cement board made from fiber and cement composition 1:1.5 and CaCl2 content 3% produced moisture content, thickness swelling, water absorption, density, modulus of rupture/MOR, modulus of elasticity/MOE and screw withdrawal strength that met the requirement of JIS A 5417-1992. The composition of fiber and cement and the variations of CaCl2 content produced significant effect on water content, water absorption, thickness swelling, modulus of rupture/MOR, modulus of elasticity/MOE and screw withdrawal strength on cement boards.Keywords : oil palm empty fruit bunches fiber, cement boards, physical and mechanical properties

scholarly journals PENGARUH PERENDAMAN PARTIKEL TERHADAP SIFAT FISIS DAN MEKANIS PAPAN PARTIKEL DARI AMPAS TEBU (Saccharum officinarum)

PERENNIAL ◽  
2008 ◽  
Vol 4 (1) ◽  
pp. 6
Author(s):  
Apri Heri Iswanto ◽  
Zahrial Coto ◽  
Kurniawansyah Effendy
Keyword(s):  
Mechanical Properties ◽  
Moisture Content ◽  
Modulus Of Elasticity ◽  
Internal Bond ◽  
Physical And Mechanical Properties ◽  
Saccharum Officinarum ◽  
Hot Water ◽  
Modulus Of Rupture ◽  
Thickness Swelling ◽  
Holding Power

The objective of this research is to research the effect of particle soaking to physical and mechanical properties particleboard that resulted. The best result of particleboard is particleboard with treatment of hot water soaking. From this result obtained average of physical properties of particleboard (i.e. density, moisture content, water absorption, and thickness swelling) are 0.7 g/cm3; 9.58%; 52.27%; 10.05%. While the result average of mechanical properties of particleboard (i.e. Modulus of Rupture, Modulus of Elasticity, Internal Bond and Screw Holding Power) are 118.79 kg/cm2; 8.909 kg/cm2; 1.85 kg/cm2; 28.40 kg. Key words: Soaking, bagasse, particleboard, physical and mechanical properties References

SIFAT FISIK MEKANIK PAPAN PARTIKEL TANPA PEREKAT DARI TANDAN KOSONG KELAPA SAWIT (Elaeis Guineensis acq)

2014 ◽  
Vol 6 (1) ◽  
pp. 15 ◽  
Author(s):  
Budi Tri Cahyana
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Water Content ◽  
Oil Palm ◽  
Modulus Of Elasticity ◽  
Physical And Mechanical Properties ◽  
Modulus Of Rupture ◽  
Particle Board ◽  
Thickness Swelling ◽  
Empty Fruit Bunches

This research aimed to get the physical and mechanical properties of non adhesive-particle board from oil palm empty fruit bunches. The oil palm empty fruit bunches were degradated to fibre and boiled in boiling water during 60 minute then dried in ± 2 weeks. The dried raw material was chopped to be fibre in 5 mesh, 10 mesh, and 16 mesh. It were complied into a mold and then hot pressed in 35 kgf/cm2 pressure during 10 minute with 3 of temperature variety, 160°C, 180°C and 200°C. The result showed that the average of particle board water content was 7,11 -  9,85 % and the density was 0,63 – 0,76 gr/cm3. The highest thickness swelling was 22,59 % in 10 mesh and 160 0C (a2b1) temperature of oil palm empty fruit bunches. The modulus of rupture was 211,67 kg/cm2  in 10 mesh and 180 0C (a2b2) temperature. The modulus of elasticity was 490,85 kg/cm2 in 10 mesh and 160 0C (a2b1) temperature. The tensile strength was 7,49 kg/cm2 in 5 mesh and 200 0C (a1b3) temperature. The average of physical and mechanical properties such as water content, density, modulus of rupture, tensile strength were fulfill the SNI requirement, while the average of thickness swelling and modulus of elasticity were not fulfill the SNI requirement.Keywords: oil palm empty fruit bunches, particle board

scholarly journals Properties of low-density cement-bonded composite panels manufactured from polystyrene and jute stick particles

2019 ◽  
Vol 65 (1) ◽  
Author(s):  
Md Nasim Rana ◽  
Md Nazrul Islam ◽  
Suresh Kumar Nath ◽  
Atanu Kumar Das ◽  
Md Ashaduzzaman ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Modulus Of Elasticity ◽  
Expanded Polystyrene ◽  
Modulus Of Rupture ◽  
Low Density ◽  
Processing Conditions ◽  
Thickness Swelling ◽  
Pressing Time ◽  
Jute Fibers ◽  
Bonded Composite

Abstract This study was conducted to evaluate the properties of cement-bonded composite (CBC) manufactured using jute stick particles and expanded polystyrene (EPS) beads to reduce the density of CBC for mitigating the main limitation of CBC in its applications. The CBCs were manufactured by using cement, jute stick particle, EPS and jute fiber by cold pressing having the pressure of 5 MPa and pressing time of 24 h. CBCs were also manufactured by replacing the jute stick particles with EPS beads, the processing conditions remaining the same. There were at least 5 replications for each type of board. Waste jute fibers were added for improving the degenerated mechanical properties of CBC caused by the addition of EPS beads. Important physical properties, i.e., density, water absorption (WA) and thickness swelling (TS) and mechanical properties, i.e., modulus of elasticity (MOE) and modulus of rupture (MOR) of the manufactured CBCs were tested following the Malaysian Standards. Higher percentage of EPS beads significantly reduced the density of CBCs and the lowest density (0.91 ± 0.02 g/cm3) was found when the EPS beads replaced 30% jute stick particles. As expected, mechanical properties decreased with the gradual replacement of jute stick particles by EPS beads. However, the degraded mechanical properties significantly increased when waste jute fibers were added in the CBCs. Addition of EPS beads in CBCs reduced the density, which might increase the potentiality for the utilization of cement-bonded composites for various applications.

Medium Density Particleboard with Addition of Impregnated Paper

2014 ◽  
Vol 1025-1026 ◽  
pp. 543-546
Author(s):  
Juliana Cortez Barbosa ◽  
Anderson Luiz da Silva Michelon ◽  
Elen Aparecida Martines Morales ◽  
Cristiane Inácio de Campos ◽  
André Luis Christoforo ◽  
...  
Keyword(s):  
Moisture Content ◽  
Modulus Of Elasticity ◽  
Mechanical Tests ◽  
Modulus Of Rupture ◽  
Medium Density ◽  
Test Results ◽  
Thickness Swelling ◽  
Adhesion Test ◽  
Layer Medium ◽  
Determine Moisture Content

The aim of this research was to produce three-layer Medium Density Particleboard (MDP), with the addition of impregnated paper, in the inner layer, in proportions of 1; 5 and 20%. In this study, MDP was composed with particles of small size in outer layers, and larger particles in internal layer. After panel manufacturing, physical and mechanical tests based on Brazilian Code ABNT NBR 14.810 were carried out to determine moisture content; density; thickness swelling; water absorption; modulus of rupture (MOR) and modulus of elasticity (MOE) in static bending and internal adhesion. Test results were compared to commercial panels, produced with 100% Eucalyptus, considering the requirements specified by Brazilian Code. Properties presented values close to normative specifications, indicating positively the possibility of production of MDP using addition of waste paper impregnated.

scholarly journals KARAKTERISTIK PAPAN PARTIKEL DARI LIMBAH KULIT KACANG TANAH DENGAN PEREKAT ALAMI ASAM SITRAT DENGAN PELARUT ASAP CAIR

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Agus Ngadianto ◽  
Ganis Lukmandaru ◽  
Dhuria Maulidya Sari ◽  
Utari Mardatillah ◽  
Dera Fara Fitria
Keyword(s):  
Weight Loss ◽  
Citric Acid ◽  
Modulus Of Elasticity ◽  
Acid Content ◽  
Modulus Of Rupture ◽  
Peanut Shell ◽  
Liquid Smoke ◽  
Pressing Time ◽  
Citric Acid Content ◽  
Dry Wood

Binderlessboard is one of the potential eco friendly products that can be developed. Utiliation of natural adhesives for non-wood composite is still very limited. Therefore, this research is focused on effects of citric acid content and pressing time on characteristics of particleboard made from peanut shell including its durability to dry wood termite attacks. Peanut shell particles were used as raw materials. Citric acid dissolved in liquid smoke which functioned as a water substitute solvent under a certain ratio and the concentration of the solution was adjusted to 60%. The use of liquid smoke is expected to increase the durability of the particleboard. Factors used in this research were citric acid content (10-30% based on dry weight particles) and pressing time (10 minutes and 15 minutes). Properties of particleboard were analyed based on Japanese Industrial Standard (JIS) A 5908 for particleboard. The dry wood termite resistance was then analyzed for its weight loss and mortality after 4 weeks. The results showed that the best particleboard was obtained from the treatment of 30% citric acid content with 15 minutes of pressing time where only the modulus of rupture and modulus of elasticity did not met the requirement of JIS A 5908 type 8 with the thickness swelling were 3.276%, water absorption were 44,991%, internal bonding were 4.679 kgf / cm², modulus of rupture were 26.822 kgf / cm², and modulus of elasticity were 8,986,058 kgf / cm². The best value of weight loss and mortality of dry wood termites on particleboard was obtained in a combination of 30% citric acid content with 10 minutes pressing time were 1.083% and 38.67% respectively.

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