Physical And Mechanical Properties Of Injection Molding For Waste Polypropylene Rice Husk Composite (Wpc) Upon Water Absorption And Uv Irradiation Expossure

摘要

The feasibility of Wood Polymer Composites (WPCs) on an industrial scale is essential that the performance of WPCs is well characterized, from their production process to the requisites for their various applications in the industrial building construction or furniture industries. WPCs are combination of polymer with different composition of additives such as wood fiber of rice husk (RH). The preparation of the solid WPCs is comprises on the predetermined temperatures for injection molding between 50°C to 220°C at different machine zones. The physical characterization approached on WPCs samples is water absorption test in Ultra-Violet irradiation exposures at 32°C. The WPCs is then were analysed on its morphological changes of the fiber particle size of RH after both treatment. The result shows the highest percentage of water absorption is 2.82% in which increased of RH content lead to increasing the water absorption rate. It directly affects the thickness of WPCs with swelling value of 1.94%. As compared the composition ratio, the highest RH content in WPCs lead to higher density values. Hardness value was decreasing respectively for all WPCs due to increase of immersion hours but with respect to the highest hardness of 14.5kN is from the highest RH content. The study is important in the application of RH filled polymer composites as an alternative material in industrial building construction due to its light weight, renewable and low cost.