scholarly journals Sunflower (Helianthus Annuus) Stalks as Alternative Raw Material for Cement Bonded Particleboard

2020 ◽  
Vol 71 (1) ◽  
pp. 41-46
Author(s):  
Hasan Hüseyin Taş ◽  
Fatih Mehmet Kul
Keyword(s):  
Water Absorption ◽  
Helianthus Annuus ◽  
Wood Properties ◽  
General Purpose ◽  
Raw Material ◽  
Thickness Swelling ◽  
Sunflower Stalks ◽  
Nominal Density ◽  
Screw Withdrawal ◽  
Absorption Thickness

Sunflower stalks (Helianthus annuus) were studied as an alternative raw material for cement bonded particleboard. Experimental cement bonded particleboards measuring 500 mm × 500 mm × 12 mm with nominal density of 1300 kg/m3 were produced using different ratios of sunflower stalk particles with wood. Properties of the cement bonded particleboards evaluated include water absorption, thickness swelling, screw withdrawal strength and bending properties. Results of the study showed that the addition of small amount of sunflower stalks in the production of cement bonded particleboard does not significantly influence the properties tested. Inclusion of more stalks in the mixture significantly decreases mechanical properties and raises thickness swelling and water absorption values of the cement bonded particleboard. Results indicate that boards which include a small amount of sunflower stalks provide properties required by the standards for general purpose-use cement bonded particleboards.

scholarly journals Impact of kaolin on physicomechanical properties of density-graded cement bonded paperboards

BioResources ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. 6033-6044
Author(s):  
Aina K. Sesan ◽  
Olayiwola Y. Bolarinwa ◽  
Oriire L. Temitope
Keyword(s):  
Cement Content ◽  
High Strength ◽  
Strength Properties ◽  
Raw Material ◽  
Modulus Of Rupture ◽  
Moisture Uptake ◽  
Thickness Swelling ◽  
Nominal Density ◽  
Printing Papers ◽  
Absorption Thickness

Paperboards of thickness 0.6 cm with densities of 0.8, 0.9, and 1.0 g/cm3 were produced from waste papers mixed with cement and kaolin. Printing and corrugated waste papers were employed in the proportions of 50.0/25.0/25.0, 50.0/37.5/12.5, and 50.0/12.5/37.5 (paper/cement/kaolin), respectively. The dimensional and strength properties of the boards were investigated. The values obtained range from 0.40 to 0.94 g/cm3, 51.19 to 68.10%, 0.14 to 3.10%, 0.01 to 1.69 Nmm-2, and 119.98 to 567.32 Nmm-2 for observing the density, water absorption, thickness swelling, modulus of rupture, and modulus of elasticity, respectively. The board of proportion 25/25 of kaolin/cement was densest with high strength. As the nominal density and kaolin content were increased from 12.5 to 37.5%, an increase was observed in density and strength properties. Similarly, as the proportion of kaolin and cement content were increased, the rate of moisture uptake to cavity decreased. This study shows that boards from printing papers were more dimensionally stable than corrugated papers. It revealed that printing papers could be better raw material for manufacture paperboard than corrugated papers. Information provided in this study could be used as a guideline for the manufacture of paperboard reinforced with kaolin as an additional constituent for quality improvement.

scholarly journals Lignocellulosic Composites from Acetylated Sunflower Stalks

2019 ◽  
Vol 9 (4) ◽  
pp. 646 ◽  
Author(s):  
Antonios Papadopoulos ◽  
George Kyzas ◽  
Athanasios Mitropoulos
Keyword(s):  
Weight Gain ◽  
Bond Strength ◽  
Internal Bond ◽  
General Purpose ◽  
Wood Chips ◽  
Raw Material ◽  
Thickness Swelling ◽  
Load Bearing ◽  
Sunflower Stalks ◽  
Dry Conditions

Sunflower stalks could be an alternative raw material for use in the particleboard industry since the requirements of P1 general purpose boards for use in dry conditions and P2 boards for interior fitment for use in dry conditions are easily satisfied. Acetylation of sunflower stalks is found to greatly improve the thickness swelling (TS) value, with acetylated boards showing 19.7% weight gain, meeting the TS requirements of P3 Non-Load-Bearing—Humid and P4 Load Bearing—Dry criteria; however, acetylation adversely affects the internal bond strength (IBS). It is suggested that combinations of industrial wood chips with sunflower raw material may be used for the overall improvement performance of the particleboards.

scholarly journals Soybean waste in particleboard production

2018 ◽  
Vol 42 (2) ◽  
pp. 186-194 ◽  
Author(s):  
Evelyn Hoffmamm Martins ◽  
Alan Pereira Vilela ◽  
Rafael Farinassi Mendes ◽  
Lourival Marin Mendes ◽  
Lívia Elisabeth Vasconcellos de Siqueira Brandão Vaz ◽  
...  
Keyword(s):  
Water Absorption ◽  
Water Immersion ◽  
Eucalyptus Grandis ◽  
Raw Material ◽  
Modulus Of Rupture ◽  
High Yield ◽  
Thickness Swelling ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Hybrid Eucalyptus

ABSTRACT Brazil is the second largest soybean producer in the world, with a yield of around 96.2 million tons per crop. This high yield leads to a great amount of waste resulting from soybean cultivation, which can reach approximately 41 million tons of waste per year. This material has lignocellulosic properties, which may enable its use as a raw material for particleboard production. Therefore, the objective of this study was to evaluate the use of soybean pods in particleboard production. For particleboard manufacture, wood of the hybrid Eucalyptus urophylla and Eucalyptus grandis was used, added with soybean pods, at proportions of 0%, 25%, 50%, 75% and 100%. For particleboard evaluation, a completely randomized design was used, with five treatments and three replicates, using linear regression and the Scott-Knott test at 5% significance for comparison among the different treatments. The properties apparent density, compaction ratio, water absorption after 2 and 24 hours, thickness swelling after 2 and 24 hours in water immersion, internal bonding, modulus of rupture and modulus of elasticity in bending properties were evaluated. The ratio soybean pod waste and eucalyptus particles in the panels led to an increase in water absorption values and thickness swelling, in addition to a decrease in mechanical properties. The production of panels with approximately 23% soybean pods is feasible.

Water Absorption and Thickness Swelling of Laminated Composite after Cured at Different Angle

2013 ◽  
Vol 465-466 ◽  
pp. 86-90 ◽  
Author(s):  
Mohd Yuhazri bin Yaakob ◽  
T.T.T. Jennise ◽  
H. Sihombing ◽  
N. Mohamad ◽  
S.H. Yahaya ◽  
...  
Keyword(s):  
Water Absorption ◽  
Composite Structures ◽  
Moisture Absorption ◽  
Glass Fibers ◽  
Laminated Composite ◽  
High Water ◽  
Raw Material ◽  
Thickness Swelling ◽  
Gravity Effects ◽  
Materials Used

Moisture absorption is a very important factor in polymers and composite materials used for hull manufacture and stability in marine environment. High water absorption of the material will affects the mechanical properties and stability in composite. This research is carried out to study the feasibility of the gravity effects on curing position of the laminated composite structures to enhance the curing space needed. Vertical cured laminate having almost similar properties with common horizontal cured laminate able to save much space in composite industry. Horizontal cured laminates filled up spaces in which SMI lack of. Polyesters and E-glass fibers were used as the raw material in this research. Vacuum bagging technique was used to suck out the excess resin during lay-up to avoid any voids and air inside laminate and cured at different angle position in room temperature for 24 hours. Seven samples of laminated composite were fabricated and cut into specific dimension in accordance to ASTM standard. This paper will discuss about the investigation on the water absorption and thickness swelling of the thermosetting laminated composite by curing the laminate at different angle using vacuum bagging technique. From the testing, SN6 and SN7 shows to have good water resistant in physical properties.

Evaluation of a Plastic Composite Produced with Residues of Sugarcane Bagasse and Polypropylene without Additives

2015 ◽  
Vol 1088 ◽  
pp. 407-410
Author(s):  
Rosane A.G. Battistelle ◽  
Barbara Stolte Bezerra ◽  
Ivaldo D. Valarelli ◽  
Luiz A. Melgaço N. Branco ◽  
Eduardo Chahud ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Water Absorption ◽  
Sugarcane Bagasse ◽  
Mechanical Characterization ◽  
Impact Resistance ◽  
Thickness Swelling ◽  
Plastic Composite ◽  
Recycled Polypropylene ◽  
Tension Tests ◽  
Absorption Thickness

In this research the aim was produce and evaluate a plastic composite using recycled polypropylene (PP) and fibers from sugarcane bagasse residues (SC), without the use of additives. This analysis was based on laboratorial tests for physical and mechanical characterization, according to the standards ASTM D256-00, D638-101 and D570-98 were analyzed: water absorption, thickness swelling, impact resistance, tensile strength and its correspondent deformation. For comparison it was elaborated three different compositions: 100% PP; 80% PP+20%SC; 70%PP+30%SC. The results indicate a positive correlation with the content of fiber and water absorption and thickness swelling. In the tension tests, the composites with fibers increase the value of resistance for physical efforts, bringing advantages as durability and integrity of the material, showing a viability of the composites.

scholarly journals Binderless Thermal Insulation Panels Made of Spruce Bark Fibres

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1799
Author(s):  
Jakob Gößwald ◽  
Marius-Cătălin Barbu ◽  
Alexander Petutschnigg ◽  
Eugenia Mariana Tudor
Keyword(s):  
Water Absorption ◽  
Thermal Insulation ◽  
Internal Bond ◽  
Fibre Length ◽  
Raw Material ◽  
Tree Bark ◽  
Thickness Swelling ◽  
Wet Process ◽  
Spruce Bark ◽  
Tree Stem

Tree bark is a by-product of the timber industry available in large amounts, considering that approximately 10% of the volume of a tree stem is bark. Bark is used primarily for low-value applications such as heat generation or as mulch. To the best of our knowledge, this study is the first one that scrutinises thermal insulation panels made from spruce bark fibres with different densities and fibre lengths manufactured in a wet process. The insulation boards with densities between 160 and 300 kg/m3 were self-bonded. Internal bond, thermal conductivity, and dimensional stability (thickness swelling and water absorption), together with formaldehyde content, were analysed. The thermal properties of the boards were directly correlated with the density and reached about 0.044 W/m*K, while the internal bond was rather influenced by the fibre length and was relatively low (on average 0.07 N/mm2). The water absorption was high (from 55% to 380%), while the thickness swelling remained moderate (up to 23%). The results of this study have shown that widely available bark residues can be successfully utilised as an innovative raw material for efficient eco-friendly thermal insulation products.

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

Feasibility of Using MDP Panels, Compared to Conventional Particleboards

2015 ◽  
Vol 668 ◽  
pp. 145-149
Author(s):  
Bárbara Maria Ribeiro Guimarães ◽  
José Benedito Guimarães Jr. ◽  
Jefferson Barbosa Campomori ◽  
Rafael Farinassi Mendes ◽  
Lourival Marin Mendes
Keyword(s):  
Physical Properties ◽  
Water Absorption ◽  
Urea Formaldehyde ◽  
Raw Material ◽  
Thickness Swelling ◽  
Gel Time ◽  
Pressing Cycle ◽  
Base Resin ◽  
Solids Content

The objective of this study was to investigate, by physical properties, the efficiency of MDP panels, compared to conventional particleboards, since MDP was considered as a raw material for the manufacture of these panels. MDP panels had the following composition: 20/60/20 face/core; a urea-formaldehyde adhesive was used, with a solids content of 55%; pH 8.42; viscosity of 420 Cp and gel time of 51 seconds. 12% of dry base resin were applied to the particles. The pressing cycle was 4 MPa, with a temperature of 160°C for a period of 8 minutes. The panels were produced with a density of 0.70g/cm3. We observed that with the exception of the physical properties of water absorption after 2 hours, the MDP showed lower physical properties (water absorption after 24 hours and thickness swelling after 2 hours and 24 hours of immersion in water) in relation to the panels conventional clusters. Thus demonstrating its superiority in relation to the physical properties of MDP compared to conventional agglomerated panels, emphasizing their use in this way.

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