Wood Plastic Composites Produced from Postconsumer Recycled Polystyrene and Coconut Shell: Effect of Coupling Agent and Processing Aid on Tensile, Thermal, and Morphological Properties

2019 ◽  
Vol 60 (1) ◽  
pp. 202-210 ◽  
Author(s):  
Sing Li Ling ◽  
Seong Chun Koay ◽  
Ming Yeng Chan ◽  
Kim Yeow Tshai ◽  
Thevy Ratnam Chantara ◽  
...  
Keyword(s):  
Coupling Agent ◽  
Coconut Shell ◽  
Morphological Properties ◽  
Shell Effect ◽  
Wood Plastic Composites ◽  
Plastic Composites

Mechanical and morphological properties of coextruded wood plastic composites with glass fiber-filled shell

2014 ◽  
Vol 37 (3) ◽  
pp. 824-834 ◽  
Author(s):  
Birm-June Kim ◽  
Runzhou Huang ◽  
Jingquan Han ◽  
Sunyoung Lee ◽  
Qinglin Wu
Keyword(s):  
Glass Fiber ◽  
Morphological Properties ◽  
Wood Plastic Composites ◽  
Plastic Composites

scholarly journals FLAT-PRESSED WOOD PLASTIC COMPOSITES FROM COMMUNITY FOREST WOOD BARK AND RECYCLED POLYPROPYLENE: THE EFFECT OF PRESSING TEMPERATURE ON THE PHYSICAL, MECHANICAL, AND MORPHOLOGICAL PROPERTIES

2021 ◽  
Vol 56 (4) ◽  
pp. 869-878
Author(s):  
Sutrisno ◽  
Eka Mulya Alamsyah ◽  
Atmawi Darwis ◽  
Alia Salima Ahmad ◽  
Shigehiko Suzuki ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Moisture Content ◽  
Morphological Properties ◽  
Thickness Swelling ◽  
Pressing Temperature ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Recycled Polypropylene ◽  
Wood Bark ◽  
Absorption Thickness

The article describes a new idea related to the use of wood bark powder as a filler material in the production of wood plastic composites using flat-pressed method, based on its thermal stability and abundant availability, enabling replacing wood powder, which has been widely used. This research aims to study the effect of temperature on the physical, mechanical, and morphological properties of flat-pressed wood plastic composites made from Gmelina arborea bark and recycled polypropylene. A 40:60 mesh (5% moisture content) of G. arborea bark powder was mixed with recycled polypropylene (RPP) pellets with a weight ratio of 40:60 and a maleic anhydride (MAH) modifier as much as 5% of the weight of the RPP was added. Mixing the ingredients is done in a rotating blender for 15 minutes at a speed of 80 rpm until homogeneous. The mixture was heated at 175oC until the RPP pellets were completely melted and then cooled at room temperature. After that, the material mixture was made into powder and filtered, and then moulded in a steel plate mould at temperatures of 160, 165, and 170oC under a pressure of 30 kg/cm2 for 4 minutes with a target density of 1 g/cm3. Physical properties including density, moisture content, water absorption, thickness swelling, and volume shrinkage according to ASTM D570 standard were determined. Mechanical properties, such as modulus of elasticity (MOE) and modulus of rapture (MOR), referring to ASTM D7031 standard, and tensile strength parallel to panel length, referring to ASTM D638 standard, were also evaluated. In addition, composite morphology was also studied using scanning electron microscopy (SEM). The results showed that the increasing of pressing temperature had a significant effect on the improvement of moisture content, water absorption, thickness swelling, volume shrinkage, and MOR. MOR value increased by 34.12% when the pressing temperature increased form 160oC up to 170oC. Our method allows improving the physical and mechanical properties of wood bark plastic composites based on a pressing temperature of 170oC.

Adhesion Investigations of Systems Based on Birch Plywood and Wood Plastic Composites

2020 ◽  
Vol 850 ◽  
pp. 76-80
Author(s):  
Jānis Kajaks ◽  
Karlis Kalnins ◽  
Juris Matvejs
Keyword(s):  
Adhesive Strength ◽  
Coupling Agent ◽  
Bonding Strength ◽  
Considerable Increase ◽  
Adhesive Bonding ◽  
Water Resistance ◽  
Wood Plastic Composites ◽  
Maleated Polypropylene ◽  
Plastic Composites ◽  
Pp Composites

One type of birch plywood production by-product: plywood sanding dust (PSD) and virgin polypropylene (PP) composites adhesive activity was investigated. To improve of the WP (PP+40 wt.% PSD) composites sheets as overlay bonding strength against birch plywood surface and water resistance of these laminated systems the industrially produced WPC material was modified with maleated polypropylene wax (MAPP) additives. These studies showed possibility of the usage of presented by-product as an excellent reinforcement for PP based wood plastic composites and addition of the coupling agent (MAPP) gives the considerable increase of adhesive activity of the used WPC. Due to the presence of MAPP (up to 4%) significantly increases not only adhesive strength of the laminates but also water resistance of the laminated sandwich specimens. As the example adhesive bonding strength could reach 2,74 N/mm2 and increases up to 4 times to compare with unmodified WPC adhesives.

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