scholarly journals PENGARUH JENIS BAMBU DAN UKURAN PARTIKEL TERHADAP SIFAT FISIK PAPAN SEMEN

2019 ◽  
Vol 3 (2) ◽  
pp. 199-210
Author(s):  
M Loiwatu ◽  
Viktor Kewilaa ◽  
Olga Nataly Da Costa
Keyword(s):  
Physical Properties ◽  
Factorial Experiment ◽  
Bamboo Species ◽  
Thickness Swelling ◽  
Board Type ◽  
As Species ◽  
Wood Particles ◽  
Two Factors ◽  
Dendrocalamus Asper ◽  
Cement Board

Objective of the study was to measure effect of bamboo species and the types of particles to the physical properties of cement board. Type of wood particles used in cement board were sawdust, flake, and mixture of  flake and sawdust. Factorial experiment in randomized complete design was applied in the study with two factors such as species of bamboo (Dendrocalamus asper, Backe), (Gigantochloa atter (Hask) Kurz ex Munro) and (Bambussa vertilatta), and type of  wood particles (sawdust, flake, and mixture of flake and sawdust). Result of the study indicated that types of wood particles was highly significant effect to the cement board such as density of board in oven dry condition and air dry condition. Combination of  species of  bamboo and types of wood particles was significant effect to the thickness swelling of the board. Species of bamboo was not significant effect to physical properties of the board.

scholarly journals Study of Homogeneous Chipboard Manufacturing u sing Betung Bamboo (Dendrocalamus Asper) Mixed with Polyethylene Addictive

2021 ◽  
Vol 11 (2) ◽  
pp. 68-71
Author(s):  
Salman Salim ◽  
◽  
Mona Lena Abdul Aziz ◽  
Sufyan Abdullah ◽  
Mohamad Hairi Osman ◽  
...  
Keyword(s):  
Water Absorption ◽  
Peninsular Malaysia ◽  
Modulus Of Rupture ◽  
Medium Density ◽  
Bamboo Species ◽  
Thickness Swelling ◽  
European Standard ◽  
Climate Conditions ◽  
Dendrocalamus Asper ◽  
Scientific Name

Bamboo is an evergreen plant native to Asia and America that grows at every altitude, even in unideal climate conditions. Betung bamboo or its scientific name Dendrocalamus Asper is one of the bamboo species that are easily found in peninsular Malaysia. This study examined the characteristics of Betung bamboo and its potential to manufacture chipboard. Several tests were conducted, namely modulus of elastic (MOE), modulus of rupture (MOR), thickness swelling (TS), and water absorption (WA) to evaluate the potential of Betung bamboo as the primary material in the manufacture of chipboard mixed with polyethylene as additive are the parameters considered. This study found that the composition of 70% bamboo and 30% polyethylene was produced optimum chipboard which met BS EN standards (British and European Standard). It was also found that the MOE and MOR values of the resulting chipboard exceeded the medium density board standards. For WA and TS values, the chipboard achieved the standard requirements. Thus, this study concludes that chipboard made of Betung bamboo with the addition of polyethylene is suitable to be applied for internal and external doors, and internal paneling for any commercial or domestic building and furniture.

scholarly journals EMBALAGENS CARTONADAS COMO MATÉRIA-PRIMA NA FABRICAÇÃO DE COMPÓSITOS

Nativa ◽  
2018 ◽  
Vol 6 (2) ◽  
pp. 177
Author(s):  
Talita Baldin ◽  
Maiara Talgatti ◽  
Amanda Grassamann da Silveira ◽  
Bruna Gabrieli Resner ◽  
Elio José Santini
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Internal Bond ◽  
Urea Formaldehyde ◽  
Eucalyptus Grandis ◽  
Raw Material ◽  
Thickness Swelling ◽  
Wood Particles ◽  
Sustainable Materials ◽  
Waste Particles

O objetivo do presente trabalho foi avaliar o potencial de uso de partículas de resíduos de embalagens cartonadas e partículas de Eucalyptus grandis para a fabricação de compósitos, colados com adesivo à base de ureia-formaldeído. Foram utilizadas cinco diferentes proporções de madeira de E. grandis e embalagens cartonadas. As partículas de madeira e embalagens cartonadas foram produzidas em laboratório. A avaliação da qualidade dos compósitos envolveu a caracterização da geometria das partículas, das propriedades físicas: massa específica básica, teor de umidade de equilíbrio, absorção de água e inchamento em espessura após 2 e 24 horas de imersão em água e das propriedades mecânicas: flexão estática (MOE e MOR), resistência ao arrancamento de parafuso, ligação interna e dureza Janka. A incorporação de partículas de embalagens cartonadas proporcionou uma melhoria nas propriedades físicas em relação aos compósitos puros de madeira. Já para as propriedades mecânicas, compósitos com até 50% de embalagens cartonadas obtiveram melhores resultados, no entanto, a incorporação a partir de 75% ocasionou decadência nessas propriedades. Compósitos de madeira de E. grandis e embalagens cartonadas apresentaram potencial para utilização em ambientes internos e podem ser uma alternativa para a produção de compósitos sustentáveis e de boa qualidade.Palavra-chave: materiais sustentáveis, propriedades físicas e mecânicas, ureia-formaldeído. CARTONBOARD PACKAGING AS A RAW MATERIAL IN THE MANUFACTURE OF COMPOSITES ABSTRACT:The aim of this study was to evaluate the potential waste particles use of carton packaging and particles of E. grandis for the manufacture of particle boards, bonded with urea-formaldehyde-based adhesive. Five different proportions of E. grandis wood and cartons have been used. The wood particles and cartons were produced in the laboratory. The quality assessment panels involved characterizing the geometry of the particles, the physical properties: specific gravity, equilibrium moisture content, water absorption and thickness swelling after 2 and 24 hours of immersion in water and mechanical properties: flexural static (MOR and MOE), resistance to screw pullout, internal bond and Janka hardness. The incorporation of particulate cartons provided an improvement in physical properties relative to pure wood panels. As for the mechanical properties, panels of up to 50 % of cartons obtained best results, however, incorporating from 75 % decay caused these properties. The wood particleboard of E. grandis and cartons showed potential for use indoors and become an alternative for producing sustainable panels and of good quality.Keywords: sustainable materials, physical-mechanical properties; urea-formaldehyde. DOI:

scholarly journals Effects of Shelling Ratio and Particle Characteristic on Physical Properties of Three-Layered Particleboard Made from Different Wood Species

2017 ◽  
Vol 4 (1) ◽  
pp. 25-30
Author(s):  
Muhammad Navis Rofii ◽  
Satomi Yumigeta ◽  
Shigehiko Suzuki ◽  
Tibertius Agus Prayitno
Keyword(s):  
Moisture Content ◽  
Physical Properties ◽  
Linear Expansion ◽  
Core Layer ◽  
Douglas Fir ◽  
Thickness Swelling ◽  
Surface Layers ◽  
The Core ◽  
Wood Particles ◽  
Particle Characteristic

Wood waste materials such as flakes, particles, sawdust, planer shaving, which are residues from furniture industry can be utilized to manufacture many composites such as particleboard. The most commonly used particleboard has three layers: two face layers and one core layer. The face layers consist of fine particles and the core layer is made of coarse particles.This study aimed to show the effect of shelling ratio and particle characteristic on physical properties of three-layer particleboard with high density core and different particles on surface layers. The materials used in this study were hinoki (Chamaecyparis obtusa) strand and knife-milled Douglas-fir (Pseudotsuga manziesii) as surface layers and hammer-milled matoa (Pometia sp.) as core layer. The wood particles were collected from a wood company. Adhesive used was MDI resin (methylene diphenyl diisocyanate) with 6 % content in mat preparation. The pressing conditions were: temperature 180°C, pressure  3 MPa and pressing time  5 min. The target density was 0.72 g/cm3 with board size of 340 mm x 320 mm  x 10 mm. Factors used in this study were layer structure according to board shelling ratio and particle characteristic. The parameters of this study were density, moisture content, thickness swelling, water absorption, linear expansion and vertical density profile.The results of this study indicate that all boards meet the requirements of JIS A 5908-2003. Higher shelling ratio of surface layers resulted in higher physical performance of three-layer particleboard. In terms of particle type, hinoki strands showed the best performance in board density and linear expansion, while Douglas-fir particle showed the best performance in moisture content, thickness swelling and water absorption. Improvement of physical properties of particleboard with high density wood particles in core layer can be conducted by adding surface layer with higher quality wood particles such as hinoki strands or Douglas-fir particles. Compared to Douglas-fir particles, hinoki strands as surface layers contribute to higher enhancement of three-layer particleboard with matoa as the core layer.

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.

Variation of Shrinkage in Relation to Anatomical Properties and age of Selected Bamboo Species, Bambusa bambos (L.) Voss and Dendrocalamus strictus Nees

2015 ◽  
Vol 38 (1) ◽  
pp. 87-89
Author(s):  
R. Santhoshkumar ◽  
K.V. Bhat
Keyword(s):  
Physical Properties ◽  
Age Groups ◽  
Radial Variation ◽  
Bamboo Species ◽  
Dendrocalamus Strictus ◽  
Anatomical Properties ◽  
Different Parts

Bamboo species is widely used for different purposes in the different parts of World. The variation in properties of the culms of bamboos are affected its use. Shrinkage is one of the physical properties in bamboo and it will affect the products. In this article deals with the variation in shrinkage at different height levels of bamboo culms, different portion in bamboo culms such as outer to inner variation, variation in different age groups of bamboo culms. In addition to this tangential and radial variation in shrinkage also studied. The result shows that a uniform trend in variation was observed based on different parameters.

scholarly journals Sifat Papan Partikel Bambu Petung (Dendrocalamus asper) dan Bambu Wulung (Gigantochloa atroviolacea) dengan Perlakuan Ekstraksi

2020 ◽  
Vol 14 (1) ◽  
pp. 84
Author(s):  
Ragil Widyorini ◽  
Ikhwan Syahri ◽  
Greitta Kusuma Dewi
Keyword(s):  
Citric Acid ◽  
Bond Strength ◽  
Internal Bond ◽  
Cold Water ◽  
Internal Bond Strength ◽  
Modulus Of Rupture ◽  
Bamboo Species ◽  
Japanese Industrial Standard ◽  
Dendrocalamus Asper ◽  
Extraction Treatment

Bambu memiliki kandungan ekstraktif dengan persentase yang berbeda antar jenis bambu. Penelitian ini bertujuan untuk mengetahui pengaruh perlakuan ekstraksi pada jenis bambu yang berbeda terhadap sifat papan partikel. Dua jenis bambu digunakan yaitu Bambu Petung (Dendrocalamus asper) dan Bambu Wulung (Gigantochloa atroviolacea). Perlakuan ekstraksi digunakan pada partikel bambu sebelum proses pembuatan papan partikel yaitu tanpa ekstraksi, ekstraksi air dingin dan ekstraksi air panas. Papan partikel dibuat dalam ukuran 25 cm x 25 cm x 0,7 cm, target kerapatan 0,9 g/cm3, jumlah asam sitrat 30%, serta kondisi pengempaan suhu 180°C selama 10 menit. Hasil penelitian menunjukkan bahwa interaksi perlakuan ekstraksi dan jenis bambu hanya berpengaruh signifikan pada sifat penyerapan air dan keteguhan rekat internal, sedangkan jenis bambu berpengaruh signifikan pada nilai kadar air, modulus patah dan modulus elastisitas. Semua papan partikel yang dihasilkan memenuhi standar Japanese Industrial Standard (JIS) A 5908 tipe 13. Pada penelitian ini, papan partikel dari bambu wulung tanpa perlakuan ekstraksi mempunyai nilai yang memenuhi standar tipe 18 dan berpotensi sebagai bahan baku untuk produk furnitur eksterior. Perlakuan ekstraksi dapat meningkatkan secara signifikan nilai keteguhan rekat internal papan partikel bambu petung, walaupun secara umum dengan jumlah asam sitrat 30% perlakuan tersebut tidak diperlukan pada papan partikel bambu Properties of Particleboard made from Petung Bamboo (Dendrocalamus asper) and Wulung Bamboo (Gigantochloa atroviolacea) Particles with Extraction TreatmentAbstractBamboo has extractives, which the percentage of extractive was different based on bamboo species. This research aimed to investigate the effect of extraction treatment at different bamboo species on the particleboard properties. Two types of bamboo were used, i.e. Petung bamboo (Dendrocalamus asper) and Wulung bamboo (Gigantochloa atroviolacea). Three extraction treatments were conducted to the bamboo particles before the particleboard manufacture, i.e. unextracted, cold-water extraction, and hot-waterextraction. The particleboard was made in the size of 25 cm x 25 cm x 0.7 cm, target density of 0.9 g/cm³, citric acid content of 30%, and pressing temperature of 180°C for 10 min. The results showed that the interaction between extraction treatment and bamboo species significantly affected on the water absorption and internal bond strength, however bamboo species affected significantly on the moisture content, modulus of rupture, and modulus of elasticity. All of particleboards could met the requirement of the 13 type of Japanese Industrial Standard (JIS) A 5908. In this research, particleboards made from wulung bamboo particles without extraction treatment have properties that met the requirement of the 18 type and the products have potential to be as exterior materials for furniture. In general, an extraction treatment was not an important step on the manufacturing of bamboo particleboard using citric acid 30% as adhesive. However, the extraction treatment could increase significantly the internal bond strength of particleboard made from petung bamboo.

scholarly journals SIFAT FISIS PAPAN SEMEN DARI LIMBAH KULIT BATANG SAGU

2017 ◽  
Vol 1 (3) ◽  
pp. 203
Author(s):  
Rohny S. Maail
Keyword(s):  
Physical Properties ◽  
Water Absorption ◽  
Water Content ◽  
Calcium Chloride ◽  
High Performance ◽  
Raw Materials ◽  
Particle Board ◽  
Cement Board

This research objectives were to investigate possibility of using the waste of sago cortex (Ela sagu/Wa’a) in the manufacture of cement board and to determine the physical properties of cement board based on the comparison in proportion of materials (cement, sago, water)  and catalyst calcium chloride (CaCl2). Method were applied used completely randomesed design with tree replications in 3x3x3, with total 27 samples of cement board. The results shown that the waste of sago cortex ca be applied as raw materials to manufacture of cement board and fulfill the standard of particle board (JIS A 5908, 2003). The board have dencity which is almost equal to the target of dencity, lower value in water content, water absorption and thichness swelling so that have good performance in quality and stability dimensions. The sago cortex in side of base and the catalyst CaCl2 in 6% gave high performance for all physical properties of cement board.

scholarly journals PRODUCTION OF PARTICLE BOARDS USING POLYSTYRENE AND BAMBOO WASTES

2017 ◽  
Vol 36 (3) ◽  
pp. 788-793
Author(s):  
SA Abdulkareem ◽  
AG Adeniyi
Keyword(s):  
Physical Properties ◽  
National Standards ◽  
Low Density ◽  
Thickness Swelling ◽  
The Matrix ◽  
Curing Methods

This investigation was able to produce incredibly strong particleboards using bamboo and resinous material obtained from Polystyrene wastes. The particleboards were prepared by mixing the bamboo fibres and Polystyrene based resin (PBR) followed by flat press process at different ratio (v/v). Physical properties were measured, with reference to normal and oven curing methods, according to the ASTM D-1037 standard. Thickness Swelling (TS) of the samples were measured after 2 and 24 hours of immersion in water at 25oC temperature. It was found that the physical properties of particleboards with 20%, 30% and 40% PBR content were all in agreement with low density particleboard classification of American National Standards Institute (ANSI). TS increased as the PBR content decreased in the matrix. Obtained properties convincingly indicate superior bonding ability of the synthesised resinous polystyrene over known industrial adhesives typically used for particleboard production. http://dx.doi.org/10.4314/njt.v36i3.18 

scholarly journals A Novel Numerical Model for Simulating the Quantity of Tailing Oil in the Mixed Segment between Two Batches in Product Pipelines

2019 ◽  
Vol 2019 ◽  
pp. 1-14 ◽  
Author(s):  
Guoxi He ◽  
Na Yang ◽  
Kexi Liao ◽  
Baoying Wang ◽  
Liying Sun
Keyword(s):  
Numerical Model ◽  
Physical Properties ◽  
Classical Model ◽  
Great Influence ◽  
Adsorption Effect ◽  
Practical Operation ◽  
Two Factors ◽  
Simulation Results ◽  
Reasonable Prediction ◽  
Mixed Oil

Cutting mixed oil in product pipelines has a great influence on the economy of the pipeline operation processes. The reasonable prediction of CDMS (the concentration distribution in the mixed segment) is important for cutting mixed segments. The classical model cannot explain the tailing phenomenon well which should not be neglected during operation processes. Based on Fick’s diffusion law, a new model for calculating the diffusion coefficient is proposed in this article, which originates from the essence of the diffusion phenomenon and considers the effects of both physical properties of oil products and the turbulence. At the same time, the dynamic fluid equilibrium model of CDMS near the pipe wall is given which has considered the adsorption effect of wall roughness. Based on these two factors, a novel numerical model for simulating the quantity of tailing oil is proposed, which is solved via the characteristic method and the finite difference method. The effects of different physical properties, as well as the adsorption, on both LFMS (the length of the front of the mixed segment) and LTMS (the length of the tail of the mixed segment), are analyzed. The comparison between the simulation results and the experimental data is utilized to validate the proposed numerical model. The simulation results show that the novel model can well describe the mixed segment tailing phenomenon and also explain the mixing essence of two miscible but dissimilar fluids in the pipeline more clearly. To sum up, this model can provide theoretical guidance for the prediction of CDMS and cutting process in practical operation processes; therefore, more economic benefit can be obtained.

Bark particleboard: pressing time, particle geometry and melamine overlay

2008 ◽  
Vol 84 (2) ◽  
pp. 244-250 ◽  
Author(s):  
Pierre Blanchet ◽  
Alain Cloutier ◽  
Bernard Riedl
Keyword(s):  
Physical Properties ◽  
Linear Expansion ◽  
Black Spruce ◽  
Value Added ◽  
Wood Products ◽  
Curing Time ◽  
Mechanical And Physical Properties ◽  
Wood Fibres ◽  
Wood Particles ◽  
Particle Geometry

Previous research has shown the possibility of making particleboards from bark residues. The objective of this study is to demonstrate the possibility of making black spruce (Picea mariana) bark particleboards with a short curing time in the pressing schedule, and to assess the effect of bark particle geometry on the mechanical and physical properties of bark particleboards. Additionally, melamine films were applied on bark composite boards and assessed. Mechanical and physical properties such as internal bond, modulus of elasticity, modulus of rupture, linear expansion and thickness swell were evaluated from five to two minutes curing time with a one-minute step. Mechanical and physical properties were also evaluated for four particle combinations. Different particles were used to qualify the effect of particle geometry. Combinations were made from two types of bark particles and two types of wood particles. These particles are hammermilled bark particles, refined bark, wood particles, and wood fibres (MDF). Melamine overlay was applied on the particleboard made with these four particle combinations to evaluate the behaviour of the film with the presence of bark in the composite. Good mechanical properties were obtained with a four-minute curing time. The use of wood fibres such as fibres from the MDF industry instead of wood particles, as in the particleboard industry, helped to reduce the linear expansion results. None of the particleboards produced in this study were able to meet ANSI standard requirements for linear expansion. The pressing of white melamine overlay results in a different colour according to the colorimeter results when it is applied on a bark particleboard compared to conventional particleboards. No differences were observed when a black film was applied. Key words: black spruce bark, bark particleboards, bark particle geometry, particleboard laminations, value-added wood products

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