Polymer Composite Fabrication Reinforced with Bamboo Fiber for Particle Board Product Raw Material Application

Bamboo particles as reinforcement in composite materials are prospective to be applied to particleboard products in the industry. This study aimed to synthesize bamboo particle reinforced polymer composites as a substitute for particleboard products, which still use wood as a raw material. The parameters of the composite synthesis process were varied with powder sizes of 50, 100, and 250 mesh, each mesh with volume fractions of 10, 20, and 30%, matrix types of polyester and polypropylene, Tali Bamboo, and Haur Hejo Bamboo as reinforcements. Characterization included tensile strength, flexural strength, and morphology. Particleboard products were tested based on JIS A 5908-2003, including density testing, moisture content, thickness expansion after immersion in water, flexural strength in dry and wet conditions, bending Young’s modulus, and wood screw holding power. The results showed that the maximum flexural and tensile strength values of 91.03 MPa and 30.85 MPa, respectively, were found in polymer composites reinforced with Tali bamboo with the particle size of 250 mesh and volume fraction 30%. Particleboard made of polypropylene and polyester reinforced Tali Bamboo with a particle size of 250 mesh and a volume fraction of 30% composites meets the JIS A 5908-2003 standard.

Determination of the bending strength of corner joint – metal corner brace, for corps furniture made of refined panels of particleboards

This paper presents data about the bending strength of outside corner joint – metal corner brace, for corps furniture made of refined panels of particleboard with a width of 25 mm. The research was conducted on two kinds of samples. The two kinds of sample objects are divided in two groups according to the way of composition as follows: group 1: the first are obtained by extraction i.e. cutting up an already constructed element – bedside table which was subjected to a test method for determining strength, durability and stability-furniture for indoor use EN 1730: 2000; group 2: the second sample objects were not subjected to any tests and were composed of two parts of particle board with given dimensions in accordance with the normative and are connected with the chosen connective object.

Evaluation of particle board production from cotton gin waste and urea-formaldehyde resin

The objective of this study was the evaluation of feasibility of producing particleboard for general use using cotton gin waste generated in Argentina and urea formaldehyde resin. The chemical composition and size distribution of particles of the ginning residue as well as mechanical and physical properties of the particleboards obtained were investigated. Density and flexural strength of particleboards produced with varying levels of urea-formaldehyde resin between 8.3 and 19.3% (solid to solid ratio) were evaluated. The effect of incorporating jute reinforcement on the mechanical properties of these boards was also analyzed. Particle boards with densities between 530 and 700 kg/m3 and variable flexural strength between 0.30 and 5.85 MPa were obtained, allowing the minimum levels required for low-density boards to be reached.

SIFAT FISIK DAN MEKANIK PAPAN PARTIKEL BERDASARKAN KOMPOSISI LIMBAH KULIT BUAH PINANG DAN LIMBAH KAYU GERGAJIAN DENGAN VARIASI KADAR PEREKAT

This research aimed to analyze the physical and mechanical properties of particleboard based on the composition of raw materials and adhesive content as well as their interaction with the optimum quality of particle boards that meet JIS A 5908-2003 standards. The particleboard was made with a size of 30 cm x 30 cm x 1 cm with a target density of 0.7 g/cm³. The pressing was done at a temperature of 140°C for 8 minutes with a pressure of 25 kg/cm². The composition ratio of betel nut peel waste and sawdust varied, namely 60% betel nut peel waste: 40% sawdust, 50% betel nut peel waste: 50% sawdust, and 40% betel nut peel waste: sawdust 60%. The adhesive used was Urea Formaldehyde with a concentration of 12%, 14%, and 16%. The results showed that all test values met the JIS A 5908: 2003 standard except the MOE test. The optimum value of particle board of betel nut peel and sawdust was with a composition ratio of 50% betel nut peel waste: 50% sawdust, 16% adhesive content, with a density value of 0.6876 g/cm³, a moisture content of 9,4530%, water absorption 34,5306%, thickness expansion 8,2508%, MOE 12432,6243 kg/cm², MOR 205,8462 kg/cm², adhesive firmness 2,2530 kg/cm², screw holding strength 81,6861 kg/cm².Keywords: adhesive content, betel nut peel waste, material composition, mechanical properties, particleboard, physical.Abstrak Penelitian ini bertujuan untuk menganalisis sifat fisik dan mekanik papan partikel berdasarkan komposisi bahan baku dan kadar perekat serta interaksi keduanya terhadap kualitas papan partikel yang optimum serta memenuhi standar JIS A 5908-2003. Papan partikel dibuat dengan ukuran 30 cm x 30 cm x 1 cm dengan target kerapatan 0,7 g/cm³. Pengepresan pada suhu 140°C selama 8 menit dengan tekanan 25 kg/cm². Perbandingan komposisi kulit buah pinang dan serbuk kayu gergaji bervariasi yaitu kulit buah pinang 60% : serbuk kayu gergaji 40%, kulit buah pinang 50% : serbuk kayu gergaji 50% dan kulit buah pinang 40% : serbuk kayu gergaji 60%. Perekat yang digunakan adalah Urea Formaldehida dengan konsentrasi 12%, 14% dan 16%. Hasil penelitian menunjukkan semua nilai uji memenuhi standar JIS A 5908 : 2003 kecuali uji MOE. Nilai papan partikel kulit buah pinang dan serbuk kayu gergaji optimum dengan perbandingan komposisi kulit buah pinang 50% : serbuk kayu gergaji 50%, kadar perekat 16%, dengan nilai densitas 0,6876 g/cm³, kadar air 9,4530%, daya serap air 34,5306%, pengembangan tebal 8,2508%, MOE 12432,6243 kg/cm², MOR 205,8462 kg/cm², Keteguhan rekat 2,2530 kg/cm², kekuatan menahan sekrup 81,6861 kg/cm².Kata kunci : papan partikel, kadar perekat, kulit buah pinang, komposisi bahan, sifat fisik dan mekanik.

Analysis of low requirement justification of the current standard for the strength of wood particle boards

Currently, wood particle boards made of crushed shavings are widely used in the production of cabinet furniture, despite their shortcomings. The volume of particle board production in Russia is constantly growing. The main disadvantages of the boards include their toxicity associated with the release of gas (formaldehyde) harmful to humans above the permissible level (PL = 0.01 mg/m3 of air), low strength properties (especially bending strength) and limited areas of application of the boards. If we trace the dynamics of the technical requirements for these properties of boards according to the standards, then the question arises - what is the reason for the decrease in the requirements for the strength of boards in bending and, in this regard, the limitation of the application areas of particle board? A regular decrease in the requirements in the newly introduced State Standards has been constantly occurring since 1977, but this is especially noticeable in the current 10632-2014 State Standard. This article focuses on the possible objective and subjective reasons for the low requirements of the current standard for the strength of wood particle board.

Surface Characteristics and Acoustical Properties of Bamboo Particle Board Coated with Polyurethane Varnish

Using bamboo particle board as a wall divider, a furniture component, or an automotive component with a sound absorber function may be a viable option for architects and engineers seeking to achieve desired acoustical qualities, including noise reduction. However, there is still a dearth of research on the effect of particle board finishing and coatings on acoustical sound absorption and noise reduction qualities. This study, therefore, aims to determine the surface characteristics and acoustical properties of bamboo particle board, coated with polyurethane (PU). The single-layer homogeneous particle boards were constructed using particles classified as fine and coarse with two different board densities, and coated with a high-quality PU lacquer. This study found that the coating treatment of 0.3 mm 0.6 mm succeeded to significantly decrease surface roughness, as well as thickness, swelling, and water absorption, with the thickness coating as a dominant factor compared with board density and board particle size. Adding a PU coating increases sound absorption performance at low frequencies, but significantly reduces acoustical properties at high frequencies. The increase of particle board density leads to the decrease in noise reduction coefficient capability. Results obtained from this study are useful to determine the optimal coating thickness in terms of evaluating acoustical panel products.

Analysis of the physcial properties of particleboard from a mixture of cocoa pod peel powder and styrofoam

<p><strong><em>Abstract</em></strong><strong></strong></p><p><strong><em>Abstract. This study aims to determine the effect of optimal physical properties and microstructure on particleboard samples. The percentage variations of cocoa pod peel powder mixture, styrofoam with epoxy resin adhesive were sample A (69:0:30), sample B (68:2:30), sample C (67:3:30), and sample D (66:4:30). 6:30). The materials were compressed were a hot press and a conditioning time of 14 days. sThe most optimum particleboard sample was found in sample B with values of density, moisture content, and thickness expansion, respectively 0,80 g/cm</em></strong><strong><em>²</em></strong><strong><em>, 7,74%, and 9,32%, and met the standards of SNI 03-2105- 2006. The surface shape of the particle board morphology in sample B shows the composition of the material with the adhesive binding optimally so that there are very few empty spaces or cavities.</em></strong><strong></strong></p><h1 align="center"><em> </em></h1><p><strong><em>Keywords:</em></strong><em> cocoa pod husk powder, styrofoam, particle board, epoxy resin.</em></p>