Mechanical Properties of Wheat Straw Particleboard Using Composite Adhesives

2010 ◽  
Vol 113-116 ◽  
pp. 2096-2099 ◽  
Author(s):  
Yan Hua Zhang ◽  
Ji You Gu ◽  
Ying Feng Zuo ◽  
Ming Wei Di ◽  
Hai Yan Tan ◽  
...  
Keyword(s):  
Wheat Straw ◽  
Modulus Of Elasticity ◽  
Bonding Strength ◽  
Wood Products ◽  
Modulus Of Rupture ◽  
Great Promise ◽  
Internal Bonding ◽  
Thickness Swelling ◽  
Wheat Straw Particleboard ◽  
Internal Bonding Strength

The purpose of the study was to use a cheap wheat straw to manufacture particleboard. Wheat straws offer great promise and new challenges as replacement for wood in processed wood products. The particleboard was produced using composite adhesive which the urea-formaldehyde (UF) adhesives modified by emulsifiable polymeric methylene diphenyl diisocyanate (EPU). The properties of the particleboard was evaluated by measuring internal bonding strength(IB), thickness swelling, modulus of rupture(MOR), modulus of elasticity (MOE) and formaldehyde emission. The optimal condition was chosen at density of 0.75g/cm3, UF/EPU ratio of 70/30, adhesive amounts of 10% based on the dry amounts of wheat straw. The test results showed that maximum dry internal bonding strength, wetting internal bonding strength, modulus of rupture, modulus of elasticity was 0.45MPa, 0.072MPa, 31.50MPa and 4564MPa, respectively. The thickness swelling (TS2h) and thickness swelling (TS24h) was 3.51% and 11.1%, respectively. The free formaldehyde of wheat straw particleboard reached E0-type national standards.

scholarly journals Straw based particleboard bonded with composite adhesives

BioResources ◽  
2010 ◽  
Vol 6 (1) ◽  
pp. 464-476
Author(s):  
Yanhua Zhang ◽  
Jiyou Gu ◽  
Haiyan Tan ◽  
Mingwei Di ◽  
Libin Zhu ◽  
...  
Keyword(s):  
Wheat Straw ◽  
Photoelectron Spectroscopy ◽  
Modulus Of Elasticity ◽  
Bonding Strength ◽  
Urea Formaldehyde ◽  
Formaldehyde Emission ◽  
Modulus Of Rupture ◽  
Internal Bonding ◽  
Thickness Swelling ◽  
Internal Bonding Strength

Environmentally friendly particleboard was prepared with wheat straw, an inexpensive material. The particleboard was produced by a mixing process, using a composite adhesive comprised of urea-formaldehyde (UF) adhesives and EPU. The performance of the board was evaluated by measuring internal bonding strength (IB), thickness swelling, modulus of rupture (MOR), modulus of elasticity (MOE), and formaldehyde emission. The experimental results showed that maximum of dry and wet internal bonding strength, modulus of rupture, modulus of elasticity were 0.45MPa, 0.18MPa, 31.80MPa, and 5043MPa, respectively. The thickness swelling (TS2h) and thickness swelling (TS24h) were 3.9% and 10.7%, respectively. The composite adhesives and particleboards were measured by differential scanning calorimentry (DSC), dynamic mechanical analyzer (DMA), X-ray photoelectron spectroscopy (XPS) and scanning electron microscope (SEM) measurements. The results indicated that the composite adhesive of UF/EPU could contribute to excellent mechanical, thermal, and water-resistant properties of the wheat straw particleboards.

scholarly journals Properties of Particleboard from Sawmill Wastes and Rubberwood (Hevea brasiliensis) with Different Board Thickness and Resin Content

2019 ◽  
Vol 8 (4) ◽  
pp. 6808-6812
Keyword(s):  
Mechanical Properties ◽  
Modulus Of Elasticity ◽  
Hevea Brasiliensis ◽  
Urea Formaldehyde ◽  
Resin Content ◽  
Modulus Of Rupture ◽  
Internal Bonding ◽  
Thickness Swelling ◽  
Board Thickness ◽  
European Standards

This study investigate the effect of the board thickness and resin content on the properties of particleboard. Single-layered sawmill wastes and rubberwood particleboards bonded with urea formaldehyde (UF) resins were manufactured. The boards were fabricated with three different board thicknesses (15, 18 and 25mm) at three different resin contents (7, 8 and 9%). The boards produced were evaluated for their modulus of elasticity (MOE), modulus of rupture (MOR), internal bonding (IB) and thickness swelling (TS) in accordance with the European Standards. Board thickness does affect the mechanical properties of particleboard. The study revealed that thinner boards gave higher MOE, MOR, IB and TS. No significant effects were found among three resin contents for MOE, MOR, IB and TS. It can be concluded that the particleboard made from mix tropical wood from sawmill waste and with rubberwood were suitable for particleboard manufacturing.

Development of Oriented Strand Board (OSB) Using Phenol Formaldehyde Adhesive

2014 ◽  
Vol 37 (2) ◽  
pp. 157-160
Author(s):  
Sagrika Behera ◽  
Seema Bhatt ◽  
Sneha Dobhal
Keyword(s):  
Bonding Strength ◽  
Oriented Strand Board ◽  
Phenol Formaldehyde ◽  
Solid Wood ◽  
Resin Content ◽  
Modulus Of Rupture ◽  
Internal Bonding ◽  
Poplar Wood ◽  
Screw Withdrawal ◽  
Internal Bonding Strength

Oriented strand board (OSB) was prepared using poplar wood with different resin content of phenol formaldehyde. It was observed that modulus of rupture and screw withdrawal of face and edge was more in oriented strand board as compare to solid wood. Internal bonding strength was very less in oriented strand board as compare to solid wood. It was also observed that most of the properties improve with increase in resin content.

scholarly journals Mechanical Properties of Particleboard using Acacia Mangium Wood Particles Binded With Seaweed-Based Adhesives

2021 ◽  
Vol 2129 (1) ◽  
pp. 012001
Author(s):  
K C Liew ◽  
A R Samin
Keyword(s):  
Mechanical Properties ◽  
Bonding Strength ◽  
Urea Formaldehyde ◽  
Brown Seaweed ◽  
Acacia Mangium ◽  
Modulus Of Rupture ◽  
Bending Test ◽  
Internal Bonding ◽  
Wood Particles ◽  
Internal Bonding Strength

Abstract The purpose of this study was to evaluate the mechanical properties of particleboards made from Acacia mangium wood particles binded with three different types of seaweed-based adhesive. Red seaweed (RS), brown seaweed (BS) and green seaweed (GS) were used as the seaweed-based adhesives., while particleboard using urea formaldehyde (UF) adhesive was produced as control. Adhesives and wood particles were mixed and then undergone mat-forming, pre-pressing, hot-pressing and conditioning process. The test pieces for bending test (Modulus of Elasticity, MOE; Modulus of Rupture, MOR), and internal bonding strength (IB) were cut into size according to JIS A 5908: 2003. From mechanical properties results attained, for internal bonding strength test, all boards using RS, BS and GS adhesives were found to be significantly different at p≤0.05. Apart from that, RS adhesive showed highest MOE and MOR at 529.4259 N/mm2 and 1.7900 N/mm2, respectively. As a conclusion, the mechanical properties of particleboard using RS, BS, and GS adhesives showed RS stands out as the better adhesive among them which have significant effects on its strength.

Effect of Ozone Treatment on Properties of Screw Pressed and Non-Screw Pressed Empty Fruit Bunch Medium Density Particleboard

2015 ◽  
Vol 1134 ◽  
pp. 116-122
Author(s):  
Roslan Ali ◽  
Mohamad Nurul Azman Mohammad Taib ◽  
Kamal Wok ◽  
Shawaluddin Tahiruddin ◽  
Mohd Amrin Abdullah
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Water Absorption ◽  
Modulus Of Elasticity ◽  
Modulus Of Rupture ◽  
Ozone Treatment ◽  
Medium Density ◽  
Internal Bonding ◽  
Empty Fruit Bunch ◽  
Thickness Swelling

This study was done to investigate the effects of ozone treatment as a method to improve the properties of empty fruit bunch (EFB) medium density particleboard. Two types of EFB were used in this study i.e. screw pressed and non-screw pressed empty fruit bunch. These EFB were treated in an ozone chamber for 8 hours prior to particleboard manufacturing. The mechanical properties, Modulus of Elasticity (MOE), Modulus of Rupture (MOR) and Internal Bonding (IB) and physical properties, water Absorption (WA) and Thickness Swelling (TS) of EFB particleboard were determined. The results showed that the ozone treatment could increase the MOR and IB values of EFB particleboard, but had no significant effect on MOE values. For physical properties, the values showed no improvement for TS and WA. The panels manufactured using ozone treatment was found suitable for applications for furniture products.

Mechanical and Physical Properties of Cement-Bonded Perticleboard Made from Tea Residues and Hardboards

2011 ◽  
Vol 471-472 ◽  
pp. 572-577 ◽  
Author(s):  
Hüsnü Yel ◽  
Ayfer Dönmez Çavdar ◽  
Hülya Kalaycioğlu
Keyword(s):  
Weight Basis ◽  
Modulus Of Rupture ◽  
Lignocellulosic Material ◽  
Internal Bonding ◽  
Thickness Swelling ◽  
Mean Values ◽  
Cement Ratio ◽  
Mechanical And Physical Properties ◽  
The Mean ◽  
Internal Bonding Strength

The residues of tea factory and waste hardboards are generally incinerated without utilizing their heat performances. The first objective of this study was to manufacture cement bonded particleboard using residues of tea factory (Camellia sinenses L.) and waste hardboards. The second objective was to evaluate modulus of rupture (MOR), modulus of elasticity (MOE), internal bonding strength (IB), water absorption (WA) and thickness swelling (TS) properties of the boards produced. The boards were produced at two density levels of 800 and 1200 kg/m3 and at five lignocellulosic mixture ratios of poplar chips/hardboards/tea residues (1/0/0; 1/1/0; 1/0/1; 0/1/0; 0/0/1, based on weigth). All the boards were produced at lignocellulosic material/cement ratio of 1:2.75 on a weight to weight basis. As cement curing accelerators, Al2(SO4)3 and Na2SiO3 were used at ratios of 1.5% and 3.5%, based on cement weight, respectively. The MOR values ranged from 0.8 to 10.99 MPa and MOE values ranged from 254 to 2979 MPa. The mean values of WA and TS after 24 h of water soaking of the cemen bonded particleboards ranged from 28% to 43.5% and 1.3% to 8.08%, respectively.

scholarly journals PEMANFAATAN LIGNIN KRAFT DARI LINDI HITAM SEBAGAI PEREKAT KAYU KOMPOSIT

2017 ◽  
Vol 1 (2) ◽  
pp. 135
Author(s):  
Adi Santoso
Keyword(s):  
Modulus Of Elasticity ◽  
Bonding Strength ◽  
Phenol Formaldehyde ◽  
Black Liquor ◽  
Research Result ◽  
Kraft Lignin ◽  
Wood Products ◽  
Modulus Of Rupture ◽  
Resorcinol Formaldehyde ◽  
Joint Application

Utilization of Kraft Lignin from black liquor as adhesives in the wood composite.            The lignin in the sulphate black liquor (known as kraft lignin) has a strong affinity when being reacted with formaldehyde to form lignin formaldehyde adhesives. To increase the bonding strength, the lignin is co-polymerized with phenol or resorcinol to form lignin phenol formaldehyde or lignin resorcinol formaldehyde resins. The resins can be applied in of reconstituted wood products manufacturing such as plywood, finger-jointed wood assembly and glue laminated lumber. The research result showed that each type of lignin based adhesives had specific characters which met Indonesian standard. The test result on plywood which glued by lignin formaldehyde (LF) and lignin phenol formaldehyde (LPF) indicated that bonding strength of the products were 8.0-27.0 kg/cm2, for a while on laminated wood which glued by lignin resorcinol formaldehyde (LRF) indicated that bonding strength of the products were 36.9-88.0 kg/cm2, modulus of rupture and modulus of elasticity was 372-637kg/cm2 and47,164-60,237 kg/cm2, respectively. The formaldehyde emissions were about 0.05-0.14 mg/L. The efficiency of lignin based adhesives on finger joint application reach at 35.4-73.6%. Therefore, the synthesis of lignin based adhesives, an unique wood adhesive with good resin characteristics and met bonding strength and formaldehyde emission requirement as stated in Japanese standard. Keywords : Kraft lignin, composite wood, adhesives ABSTRAK          Lignin dalam lindi hitam (dikenal sebagai lignin kraft) memiliki afinitas yang kuat bila direaksikan dengan formaldehida membentuk perekat lignin formaldehida. Guna meningkatkan daya rekatnya, lignin dikopolimerisasi dengan phenol atau resorsinol sehingga terbentuk resin lignin phenol formaldehida atau lignin resorsinol formaldehida. Resin tersebut dapat diaplikasikan dalam pembuatan produk kayu rekonstitusi seperti kayu lapis, papan sambung dan kayu lamina. Hasil penelitian menunjukkan bahwa setiap jenis perekat berbasis lignin memiliki karakter yang spesifik yang memenuhi persyaratan standar Indonesia. Hasil pengujian terhadap kayu lapis yang direkat dengan lignin formaldehida (LF) dan lignin phenol formaldehida (LPF) menunjukkan bahwa keteguhan rekat produk tersebut berkisar antara 8,0-27,0 kg/cm2, sementara untuk kayu lamina yang direkat dengan lignin resorsinol formaldehida (LRF) berkisar antara 36,9-88,0 kg/cm2, dengan modulus of rupture dan modulus of elasticity berturut-turut sekitar 372 - 637kg/cm2  dan47,164 - 60,237 kg/cm2. Emisi formaldehida produk berkisar antara 0,05-0,14 mg/L. Efisiensi perekat berbasis lignin pada aplikasi papan sambung mencapai 35,4 - 73,6%. Produk yang menggunakan perekat berbasis lignin ini memenuhi persyaratan Jepang.Kata kunci : Lignin Kraft, kayu majemuk, perekat

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 Mechanical Properties of Commercial Particleboard from Rubberwood (Hevea Brasiliensis) and Recycle Mix-Tropical Wood with Different Board Density

2021 ◽  
Vol 3 (1) ◽  
pp. 41-44
Author(s):  
Nur Wafa Amalina Amali ◽  
Nor Yuziah Mohd Yunus ◽  
Wan Mohd Nazri Wan Abdul Rahman
Keyword(s):  
Mechanical Properties ◽  
Modulus Of Elasticity ◽  
Hevea Brasiliensis ◽  
Urea Formaldehyde ◽  
Wood Particle ◽  
Modulus Of Rupture ◽  
Internal Bonding ◽  
Board Density ◽  
Tropical Wood ◽  
Minimum Requirements

In this study, mechanical properties of commercially manufactured hybrid particleboard from mix-tropical wood and rubberwood with four different densities at 25mm thickness have been investigated. The particleboard sample cutting and testing was in accordance to EN312:2013. The density of particleboard is identified with interval of 10kg/m3 for different densities which include 660kg/m3, 670kg/m3, 680kg/m3 and 690kg/m3. Particleboards were made with the ratio of 40:60 for mix-tropical wood particle and rubberwood particle respectively. The particleboards were prepared with urea formaldehyde (UF) with E1 formulation with addition of wax and hardener.  Increment of 10kg/m3 density for each particleboard led to increase in internal bonding (IB), bending testing include modulus of rupture (MOR) and modulus of elasticity (MOE), surface soundness (SS) and screw edge (SE) withdrawal. It was found that with board increment of 10kg/m3, the improvement was not statically significant except that for MOR. All panels met the minimum requirements of standard.

scholarly journals KUALITAS PAPAN KOMPOSIT LIMBAH KULIT BATANG SAGU (Metroxylon sp) DAN PLASTIK POLIPROPILENA BERDASARKAN JUMLAH LAPISAN PENYUSUN

2018 ◽  
Vol 7 (1) ◽  
Author(s):  
Mayang Archila ◽  
Farah Diba ◽  
Dina Setyawati ◽  
. Nurhaida
Keyword(s):  
Mechanical Properties ◽  
Moisture Content ◽  
Physical And Mechanical Properties ◽  
Modulus Of Rupture ◽  
Internal Bonding ◽  
Thickness Swelling ◽  
Composite Board ◽  
Average Value ◽  
Composite Layers ◽  
Sago Bark

The objective of this research is to evaluate the effect of the number of composite layers on the quality of the composite board from sago bark waste and plastic waste, and the number of composite layers that produce the best quality on composite board. The composite board is made with size 30 cm x 30 cm x 1 cm. The composition and division of the material was carried out manually with the polypropylene distribution divided into three parts: the front and rear respectively of 15%, and the center 70% of the plastic weight. Target density of composite boards was 0.7 g / cm3. The treatment used is based on the number of layers composing, which is 5 layers, 7 layers, 9 layers, 11 layers and 13 layers. After mixed the sago bark particle and waste of polypropylene, the materials then compressed with hot press at 180oC with pressure about ± 25 kg / cm2 for 10 minutes. The composite boards then tested the quality included physical and mechanical properties. Testing of physical and mechanical properties refers to JIS A 5908-2003 standard. Physical properties consist of density, moisture content, thickness swelling, and water absorption. Mechanical properties consist of modulus of rupture, modulus of elasticity, internal bonding, and modulus of screw holding strength. The study used a completely randomized design experiment consisting of 5 treatments and 3 replications. The results showed the average value of composite density was range between 0.6962 – 0.7896 g/cm3, the moisture content was range between 4.3388 % - 6.8066%, the thickness swelling was range between 8.2605% - 11.9615%, and water absorption was range between 17.2380% - 22.3867%. The average value of modulus of rupture was range between 60,0632 kg/cm2 – 64,4068 kg/cm2, the modulus of elasticity was range between 17935,1813g/cm2 – 32841,8278 kg/cm2, the internal bonding was range between 1,9268 kg/cm2  - 5,4119 kg/cm2, and the modulus of screw holding strength was range between 78,2530 kg/cm2 – 92,9677 kg/cm2. The composite board made from sago stem bark waste and polypropylene waste plastic with 13 layers treatment is the best composite board and fulfilled the JIS A 5908-2003 standard. Keywords: bark of sago, composite boards, layer of composite, polypropylenes plastic, waste

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