Properties Of Composite Board Research Articles

DEVELOPMENT AND CHARACTERIZATION OF SISAL FIBER AND WOOD DUST REINFORCED POLYMERIC COMPOSITES

ABSTRACT Mechanical properties of composite board made from waste paper, wood dust, and sisal fibers with various weight proportions were investigated in this work. The composite board was produced by hand lay-up technique with polyvinyl alcohol (PVA) binder. The result shows that the bending strength ranged between 3.5 N/mm2 and 7.5 N/mm2; water absorption values between 6.65% and 10.5%; as well as density between 280 kg/mm3 and 360 kg/mm3. A better combination of results has been found for sisal fiber (35%), wood dust (30%), PVA (10%) and waste paper (25%). The obtained result is compared with those of the conventional ceiling board results and it is observed that these composite materials can be used for internal low-cost construction work for separation, and acoustic & thermal insulation purposes.

Properties of Composite Boards from Coconut Coir, Plastic Waste and Urea Formaldehyde Adhesives

The objective of this research was to evaluate the characteristic of composite boards made from coir, plastic waste, and urea formaldehyde (UF). The board samples were manufactured at a target density of 0.7 gr/cm3. The weight ratio of waste plastic and coir was 50: 50. The UF adhesive added at 0%, 4%, 8%, 12% and 16% of the total weight of the composite board. The result shows that the characteristic of composite boards improves with UF adhesive added, however, no significant difference was found statistically.

톱밥과 귤박을 이용한 혼합보드제조 및 물성

본 연구는 톱밥과 귤박을 이용하여 혼합보드를 제조하여 기본 물성을 조사하였다. 혼합보드의 귤박 혼합율이 10%에서 40%로 증가함에 따라 흡수율은 94.1%에서 86.5%로, 두께 팽창율은 27.2%에서 18.0%로, 휨강도는 65.1 kgf/cm2에서 39.2 kgf/cm2로, 경도는 195.3 kgf/cm2에서 180.3 kgf/cm2로 감소하였다. 혼합보드의 밀도가 0.4 g/cm3에서 0.8 g/cm3로 증가함에 따라 흡수율은 149.2%에서 58.6%로 감소하였으나, 두께 팽창율은 6.4%에서 17.9%로, 휨강도는 4.2 kgf/cm2에서 96.6 kgf/cm2로, 경도는 40.4 kgf/cm2에서 196.2 kgf/cm2로 증가하였다.

Packaging Mechanical Properties of Composite Paperboard

The effects of different kinds of pulp on structure and packaging mechanical properties of composite board. The results show that in order to obtain maximum ring crush strength of composite board, in the forming process of composite board, wheat straw pulp is used as outer layer because it has strong bonding force and higher fibrosis degree. Waste news paper pulp is used as inner layer because its cost is low.

Properties of composite boards from oil palm frond agricultural waste

Properties of composite boards from oil palm frond agricultural waste were researched. Phenol and urea formaldehyde resins were used as the binders. The oil palm fronds were obtained from 20 year-old trees in an oil palm plantation in Kota Belud, Sabah. The fronds were segregated into three groups of matured, intermediate, and young oil palm fronds and further subdivided into bottom, middle, and top sections. The leaflets and the epidermis were removed from the fronds before they were sliced longitudinally into thin layers. The layers were then compressed into uniform thickness of 2 to 3 mm. The layers were air-dried and later mixed with resins using 12 to 15% of phenol and urea formaldehyde and recompressed with other layers, forming composite boards. The composite boards samples were then tested for their physical and mechanical properties. Testing was conducted in accordance with the International Organization for Standardization (ISO) standard. The results for physical and mechanical properties showed that the oil palm composite boards were better than composite boards from oil palm trunks and slightly worse than the rubberwood. Statistical analysis indicated significant differences between composite boards made from each group and section, but no differences were observed in the type of resin used. The composite boards from oil palm fronds agricultural residues has the potential to be used as an alternative to wood to overcome the shortage in materials in the wood industry.