scholarly journals The influence of particle soaking in acetic acid and NaOH solutions on the quality of sandwich particleboard from raru wood and belangke bamboo

2021 ◽  
Vol 886 (1) ◽  
pp. 012015
Author(s):  
A H Iswanto ◽  
M R Nadeak ◽  
F Octaviani ◽  
A Darwis ◽  
A Susilowati ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Moisture Content ◽  
Internal Bond ◽  
Core Layer ◽  
Target Thickness ◽  
Modulus Of Rupture ◽  
Wood Shavings ◽  
Naoh Solution ◽  
Low Dimensional

Abstract As a composite product, particleboard has disadvantages related to low dimensional stability. The research purpose was to analyze the effect of immersion in acetic acid and NaOH solution on the quality of the particleboard sandwich. Sandwich particleboard (SPb) was made in a size of 25 cm length and 25 cm width. The target thickness and density are 1 cm and 0.75 g/cm3, respectively. The adhesive used was isocyanate adhesive with a content of 7%. First, The particles, which were in the form of wood shavings and bamboo strands, were soaked in a solution of acetic acid and NaOH at various concentrations (0, 1, 2, and 3%). The moisture content of the particles to be made SPb was set at 7%. After evenly mixing the particles (wood shavings and bamboo strands) and the adhesive, the sheet was created. The board sheets were made into three layers, namely 40% face layer in the form of a bamboo strand, 20% core layer in the form of wood shavings, and 40% back layer in the form of the bamboo strand. The next stage was the hot pressing process at 160 °C for 5 min and 30 kg/cm2 pressure. The following process was conditioning the board for seven days. Testing of quality refers to the standard JIS A5908 (2003). The results showed that the immersion of Raru wood particles in acetic acid and NaOH significantly affected the value of density, water absorption, thickness swelling, modulus of elasticity, modulus of rupture, and internal bond. Except for the moisture content on the AA3 and NA2 boards and the internal bond value on the untreated (control) board, all of the panel properties in this study met the standard.

Effects of Fermented Green Juice and Cellulase on the Silage Quality of Sugarcane Top

2012 ◽  
Vol 554-556 ◽  
pp. 1053-1056 ◽  
Author(s):  
Yi Fen Zhuang ◽  
Xin Zhu Chen ◽  
Zhao Xia Dong ◽  
Jian Guo Zhang ◽  
Wen Chang Zhang
Keyword(s):  
Acetic Acid ◽  
Lactic Acid ◽  
Moisture Content ◽  
Water Soluble ◽  
Soluble Carbohydrate ◽  
Moisture Contents ◽  
Ph Values ◽  
Silage Quality ◽  
Water Soluble Carbohydrate

Two moisture levels of sugarcane top (moisture contents 69.03% - MC1 and 56.38% - MC2) were treated with fermented green juice (FGJ) at 2 ml/kg and/or with cellulase (CEL) at 5000 U/kg raw matter, and ensiled in the laboratory at ambient temperature. All additive treatments significantly (P<0.01) increased lactic acid and water soluble carbohydrate (WSC) contents, and significantly (P<0.01) decreased pH and contents of NH3-N and acetic acid compared with the control. The treatment of FGJ and CEL mixture significantly (P<0.01) decreased pH and content of acetic acid (AA) compared with treatments of FGJ and CEL alone. All the MC2 silages had more extensive fermentation than MC1 silage, shown by higher contents of lactic acid, lower pH values and NH3-N contents. In conclusion, both FGJ and CEL addition significantly improved the silage quality of sugarcane top, and their mixture had better result than FGJ and CEL alone. Reducing the moisture content of sugarcane top could improve its silage quality.

Wood-Based Panels’ Properties when Subject to Temperature and Humidity Variation

2013 ◽  
Vol 787 ◽  
pp. 106-110
Author(s):  
Hai Xia Yu ◽  
Man Ping Xu ◽  
Chong Rong Fang ◽  
Fei Yan Guo
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Moisture Content ◽  
Internal Bond ◽  
Modulus Of Rupture ◽  
High Humidity ◽  
Thickness Swelling ◽  
Temperature And Humidity ◽  
Low Humidity ◽  
European Standards

In order to reveal impact of environment humidity and temperature on properties of indoor decorated materials, the paper tested physical and mechanical prosperities of 5 kinds of wood-based panels according to European standards after equilibrium treatments in 3 types of atmosphere. The results showed that the tested materials were very hydrophilic and their strength were closely related to moisture content. Internal bond, modulus of rupture, 24h-thickness swelling and surface soundness of wood-based panels decreased at high temperature and high humidity atmosphere and increased in low temperature and low humidity surroundings, and the decrement are greater than the increment. In contrast, density almost kept the same value during these treatments.

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

scholarly journals Particleboard from kemenyan wood and belangke bamboo: effect of particle pre-treatment in acidic solution

2021 ◽  
Vol 912 (1) ◽  
pp. 012049
Author(s):  
A H Iswanto ◽  
R Tanfiz ◽  
R Hartono ◽  
F Oktaviani ◽  
A R Putra ◽  
...  
Keyword(s):  
Acid Solution ◽  
Internal Bond ◽  
Acidic Solution ◽  
Physical And Mechanical Properties ◽  
Target Thickness ◽  
Modulus Of Rupture ◽  
Hot Press ◽  
Thickness Swelling ◽  
Pre Treatment ◽  
Temperature Time

Abstract Dimensional stability is a significant problem in particleboard. This study aims to analyze the effect of immersing particles in an acid solution on particleboard’s physical and mechanical properties made of kemenyan (Styrax sumatrana) wood and belangke (Gigantochloa pruriens) bamboo. The particles were immersed in each acid solution for 24 h, and then dried to reach 9% water content. The particleboard was made with a 25x25 cm2 with a target thickness and density of 1 cm and 0.70 g/cm3, respectively. After being made into sheets, the next step is hot pressing using a hot press machine that has set the temperature, time, and pressure at 160 °C, 5 min, and 30 kg/cm2, respectively. The results showed that immersion in the acid solution can stabilize the dimensions of the resulting particleboard but does not reduce the strength of the board. Several board properties have met the standards, such as density, thickness swelling, modulus of rupture, and internal bond.

scholarly journals KUALITAS PAPAN KOMPOSIT BERLAPIS FINIR DARI SABUT KELAPA DAN PLASTIK POLIETILENA DAUR ULANG: VARIASI UKURAN PARTIKEL SABUT KELAPA

PERENNIAL ◽  
2006 ◽  
Vol 2 (2) ◽  
pp. 5 ◽  
Author(s):  
Dina Setyawati ◽  
Yusuf Sudo Hadi ◽  
Muh. Yusram Massijaya ◽  
Naresworo Nugroho
Keyword(s):  
Core Layer ◽  
Modulus Of Rupture ◽  
Composite Board ◽  
The Core ◽  
Recycled Polyethylene ◽  
The Face ◽  
Panel Products ◽  
Construction Type ◽  
Recycled Plastics

Agricultural fibers are currently used as a substituted resource to wood-based products. One of agricultural fibers that has been developed and become a resource for panel products is coir (coconut fiber). The purpose of this study is to evaluate the quality of veneered composite board made of coir and recycled polyethylene (RPE). The target density of board samples was 0.7 g/cm3. The board construction type is core type composite board (three layers). Veneers from Meranti (Shorea sp.) were used as face and back layers and coir was in the core layer. RPE composition was 50% based on coir particle and veneers oven dry weights. Recycled plastics were placed in three layers, 30% on the face and back layers, and 70% in the core layer. The coir sizes were under 1 cm, 1 cm, 5 cm, 10 cm, and 10 cm up (along coir size). The composite board samples were tested by JIS A 5908 – 1994. Each parameter was measured in three replications. The research results obtained are as follows : (1) Veneered composite boards made of coir and RPE fulfill the JIS A 5908 standard in term of density, thickness swelling after 2 and 24 hours of water immersions, modulus of elasticity, modulus of rupture and internal bond, and (2) The coir size did not significantly affect the properties of composite board. Keywords: veneered composite board, coir size, recycled polyethylene

Study on the Fire Retardant Treatment Technologies of Bamboo Particleboard

2014 ◽  
Vol 1051 ◽  
pp. 273-277
Author(s):  
Chun Gui Du ◽  
Jian Gang Song
Keyword(s):  
Mechanical Properties ◽  
Moisture Content ◽  
Modulus Of Elasticity ◽  
Internal Bond ◽  
Fire Retardant ◽  
Physical And Mechanical Properties ◽  
Thickness Swell ◽  
Modulus Of Rupture ◽  
Treatment Technology ◽  
Treatment Technologies

This paper presents a study on the different fire retardant treatment technologies influence on the physical and mechanical properties of bamboo particleboard. The results showed: the properties of bamboo particleboard would change with changing of fire retardant treatment technology; among them the treated technology of fire retardant spraying after resin blending had larger changed; compared with non-fire retardant bamboo particleboard, the density and moisture content (MC) and 2h thickness swell (2h TS) of fire retardant bamboo particleboard had a little improved, and their internal bond (IB) and modulus of rupture (MOR) and modulus of elasticity (MOE) had slightly reduced.

scholarly journals Oversized Planer Shavings for the Core Layer of Lightweight Particleboard

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1125
Author(s):  
Jakob Gößwald ◽  
Marius Cătălin Barbu ◽  
Alexander Petutschnigg ◽  
Ľuboš Krišťák ◽  
Eugenia Mariana Tudor
Keyword(s):  
Mechanical Properties ◽  
Internal Bond ◽  
Urea Formaldehyde ◽  
Core Layer ◽  
Solid Wood ◽  
Raw Material ◽  
Modulus Of Rupture ◽  
Low Density ◽  
The Core ◽  
Adhesive Application

Planer shavings (PS) are side-products generated during the processing of solid wood, typically used for heating, packaging, or insulation purposes. PS has been used for decades in particleboard manufacture, particularly in the core layer. The aim of this research is to investigate the use of PS with a length over 4 mm in low-density one-layer particleboard manufacturing with a thickness of 10 mm, as an option to reduce the raw material demand for wood-based panels. Correlations towards the mechanical properties of the particleboards, fabricated at a density of 475 kg/m3, could be drawn by analyzing the effects of different urea-formaldehyde adhesive contents (6%, 9%, and 12%). Two methods of adhesive application (pouring and spraying) and two types of blending of PS with adhesive (plowshare mixer and drum mixer) were investigated, with the aim that PS will have controlled resin application. The difference between the adhesive application methods was examined by analyzing the mechanical properties as an internal bond, modulus of rupture, and modulus of elasticity as well as indirectly by visualizing the adhesive distribution by adding a green pigment to the adhesive before application. PS demonstrated reduced bending properties in comparison with the EN 312 standard requirements of particleboards for internal use in dry conditions (type P2), due to the low density. The internal bond strength in the case of the particleboard without pigment application (up to 0.5 N/mm2) was higher compared to the P2 requirements (0.4 N/mm2), and significantly lower (0.15 N/mm2) in combination with the pigment (2.5% based on the board weight, compared to 0.1%, specific for such industry applications), but still superior to the values of the reference panel manufactured with wood particles.

scholarly journals PENGARUH KOMPOSISI FACE-CORE TERHADAP SIFAT FISIK DAN MEKANIS ORIENTED STRAND BOARD DARI BAMBU DAN ECENG GONDOK

PERENNIAL ◽  
2012 ◽  
Vol 8 (2) ◽  
pp. 75
Author(s):  
Sahriyanti Saad ◽  
. Hilal
Keyword(s):  
Mechanical Properties ◽  
Bond Strength ◽  
Dimensional Stability ◽  
Modulus Of Elasticity ◽  
Water Hyacinth ◽  
Internal Bond ◽  
Oriented Strand Board ◽  
Core Layer ◽  
Dry Weight ◽  
Modulus Of Rupture

The effect of particle composition made of bamboo and water hyacinth on the dimensional stability and mechanical properties of resulted oriented strand boards (OSB) were investigated. Three layered boards were made from bamboo and water hyacinth in which bamboo strand was used as face/back layer and water hyacinth strand was used as core layer. The boards were manufactured using three levels of bamboo and water hyacinth compositions (50:50, 60:40 and 70:30) with 6 % isocyanate based on the strand oven dry weight. The results showed that dimensional stability of the OSB decreased with the increase of composition of water hyacinth strand on core layer. A higher composition of bamboo strand as face/back layer compared to water hyacinth strand resulted in increased modulus of elasticity and internal bond strength, but decreased the modulus of rupture. The bamboo and water hyacinth composition of 70:30 compositions showed better properties than other compositions. Key words: Bamboo, water hyacinth, composition, OSB

scholarly journals SIFAT FISIK DAN MEKANIK PAPAN PARTIKEL AMPAS DAN SERAT KULIT BATANG SAGU (Metroxylon spp) BERDASARKAN KOMPOSISI SUSUNAN PARTIKEL DAN RASIO PEREKAT ASAM SITRAT SUKROSA

2021 ◽  
Vol 9 (2) ◽  
pp. 271
Author(s):  
Trisna Wati ◽  
Dina Setyawati ◽  
Nurhaida Nurhaida
Keyword(s):  
Citric Acid ◽  
Water Absorption ◽  
Water Content ◽  
Internal Bond ◽  
Stem Bark ◽  
Modulus Of Rupture ◽  
Absorption Thickness ◽  
Layer Composition ◽  
Made In

The purpose of this study is to analyze the effect of layer composition and the ratio of citric acid-sucrose as well as the interaction of both of them to the optimum quality of the particleboards. Particleboards were made in sizes 30 cm x 30 cm x 1 cm with a target density of 0.7 gr/cm3. Particleboards were prepared by hot pressing at temperature of 160 oC for 20 minutes with a pressure of 25 kg/cm2. Particleboards consists of 3 layers with a composition of layers, namely f/b70: c30, f/b60: c40, and f/b50: c50, with a surface layer (face, back) made form of sago stem bark and core layers made form of pulp sago.  Ratio of citric acid-sucrose in this study was varied from 0/100, 25/75, 75/25, and 100/0. Particleboards testing refers to standard JIS A 5908-2003 Type 8. The results showed that the layer composition had a significant effect on density, water absorption, internal bond (IB), and screw holding strenght. Meanwhile ratio of citrid acid-sucrose significantly affected the water content, water absorption, thickness development, MOE, MOR, internal bond (IB), and screw holding strenght. The interaction beetwen the composition layer factor and ratio of citrid acid-sucrose has a significant effect on water content, thickness development, MOE, MOR, and internal bond (IB). The best particleboards is in the treatment with the composition of the layer f/b70: c30 and the ratio of citric acid-sucrose 25/75 with a density value of 0.7675 gr/cm3, a moisture content of 7.5939%, modulus of rupture (MOR) 161.4350 kg/cm2, and the screw holding strength is 66.1930 kg/cm2.Keyword: citrid acid-sucrose, composition of layers, dregs and fibers of sago, particleboardsAbstrakTujuan dari penelitian ini adalah untuk menganalisa pengaruh komposisi lapisan dan perbandingan asam sitrat-sukrosa serta interaksi keduanya terhadap kualitas papan partikel yang optimum. Papan partkel dibuat dengan ukuran 30 cm x 30 cm x 1 cm dengan target kerapatan 0,7 gr/cm3. Papan partikel dikempa panas pada suhu 160 oC selama 20 menit dengan tekanan 25 kg/cm2. Papan partikel terdiri dari 3 lapisan dengan komposisi lapisan yaitu f/b70 : c30, f/b60 : c40, dan f/b50 : c50,  dengan lapisan permukaan (face, back) berupa serat kulit batang sagu dan lapisan inti (core) berupa ampas sagu. Rasio asam sitrat-sukrosa dalam penelitian ini bervariasi 0/100, 25/75, 75/25, dan 100/0. Pengujian papan partikel mengacu pada standar JIS A 5908-2003 Type 8. Hasil penelitian menunjukkan  faktor komposisi lapisan berpengaruh nyata terhadap kerapatan, daya serap air, keteguhan rekat internal (IB) dan kuat pegang sekrup.  Sedangkan faktor rasio perekat asam sitrat sukrosa berpengaruh nyata terhadap kadar air, daya serap air, pengembangan tebal, MOE, MOR, keteguhan rekat internal (IB), dan kuat pegang sekrup. Interaksi antara faktor komposisi lapisan dan rasio asam sitrat-sukrosa berpengaruh nyata terhadap daya serap air, pengembangan tebal, MOE, MOR, dan keteguhan rekat internal (IB). Papan partikel terbaik terdapat pada perlakuan dengan komposisi lapisan f/b70 : c30 dan perbandingan asam sitrat-sukrosa 25/75 dengan nilai kerapatan 0,7675 gr/cm3, kadar air 7,5939 %, keteguhan patah (MOR) 161,4350 kg/cm2, dan kuat pegang sekrup 66,1930 kg/cm2. Kata Kunci : ampas dan serat sagu, asam sitrat-sukrosa, komposisi lapisan, papan partikel

scholarly journals KARAKTERISTIK PAPAN PARTIKEL DARI BULU DOMBA, SERBUK GERGAJI DAN SERUTAN KAYU DENGAN PEREKAT UREA FORMALDEHIDA

2017 ◽  
Vol 5 (1) ◽  
pp. 9
Author(s):  
M. I. Iskandar ◽  
Achmad Supriadi
Keyword(s):  
Flexural Strength ◽  
Moisture Content ◽  
Water Absorption ◽  
Urea Formaldehyde ◽  
Particle Board ◽  
Thickness Swelling ◽  
Uniform Size ◽  
Surface Strength ◽  
Wood Shavings

Particle Board Characteristics of Fur Sheep, Sawdust and Wood Shavings with Urea Formaldehyde Adhesive         Particle board is a board made of particles of wood or other berlignoselulosa bonded with adhesive, then felted heat. Particle board excess, which uses industrial waste materials, uniform size and density, uniform thick and density, the character and quality can be set. This study aims to investigate the characteristics of particle board from sheep's wool, sawdust and wood shavings. The experimental design used was completely randomized design (CRD) with two factors and repeated three times. The first factor combination of pollen fleece (B), with sawdust sengon (G) and wood shavings sengon (S), namely B0G60S40 : (0% : 60% : 40%), B10G50S40 : (10% : 50% : 40%), B20G40S40 : (20% : 40% : 40%), B30G30S40 : (30% : 30% : 40% and the second factor consists of the physical properties (density, moisture content, thickness swelling and water absorption) and character of mechanical factor (flexural strength, modulus of elasticity, perpendicular and surface strength and straight screw holding). The results of the research were to produce a density value was between 0.69 to 0.78 g/cm3, water content with an average of 6.49%, a value between 32.36 to 83.9% thickness swelling, water absorption between 89,04- 169.15%, the flexural strength values between 68.4 to 121.8 kgf/cm2, elastic modulus was between 671.84 to 1381.51 kgf/cm2, the value of tensile strength perpendicular of the surface was between 0.44 to 1.3 kgf/cm2and screw holding strength value was between 6.0 to 22.3 kg. the higher use of powder fleece might degrade the quality of particle board, otherwise use the higher adhesive could improve the quality of particle board. The study of particle board and fleece, saws and wood shavings was on average below of the national Indonesia standard, except for the density and moisture content, for flexural strength was only partially standard value.Key words: fleece, characteristics, particle board, sawdust, wood shavings. ABSTRAK          Papan partikel merupakan suatu papan yang terbuat dari partikel-partikel kayu atau bahan berlignoselulosa lainnya yang diikat dengan perekat, kemudian dikempa panas. Kelebihan papan partikel, yaitu menggunakan bahan limbah industri, ukuran dan kerapatan seragam, tebal dan kerapatan seragam, sifat dan kualitasnya dapat diatur. Penelitian ini bertujuan untuk mengetahui karakteristik papan partikel dari bulu domba, serbuk gergaji dan serutan kayu. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL) pola faktorial dengan dua faktor dan ulangan sebanyak tiga kali. Faktor pertama kombinasi serbuk bulu domba (B), dengan serbuk gergaji kayu sengon (G) dan serutan kayu sengon (S), yaitu B0G60S40 : (0% : 60% : 40%), B10G50S40 : (10% : 50% : 40%), B20G40S40 : (20% : 40% : 40%), B30G30S40 : (30% : 30% : 40%) dan faktor kedua terdiri dari sifat fisis (kerapatan, kadar air, pengembangan tebal dan daya serap air) dan sifat mekanis (kuat lentur, modulus elastisitas, kuat tarik tegal lurus permukaan dan kuat pegang sekrup). Hasil penelitian menghasilkan nilai kerapatan antara 0,69-0,78 g/cm3, nilai kadar air dengan rata-rata 6,49%, nilai pengembangan tebal antara 32,36-83,9%, daya serap air antara 89,04-169,15%, nilai kuat lentur antara 68,4-121,8 kgf/cm2, nilai modulus elastisitas antara 671,84-1381,51 kgf/cm2, nilai kuat tarik tegak lurus permukaan antara 0,44-1,3 kgf/cm2 dan nilai kuat pegang sekrup antara 6,0-22,3 kg. penggunakan serbuk bulu domba yang semakin tinggi dapat menurunkan kualitas papan partikel, sebaliknya penggunaan perekat yang semakin tinggi dapat meningkatkan kualitas papan partikel. Penelitian papan partikel dan bulu domba, gergaji dan serutan kayu rata-rata di bawah standar nasional Indonesia, kecuali untuk kerapatan dan kadar air, untuk kuat lentur hanya sebagian yang masuk standar.Kata kunci : bulu domba, karakteristik, papan partikel, serbuk gergaji, serutan kayu.

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