Characterisation of Polypropylene Composite Reinforced with Chemi-Thermomechanical Pulp from Oil Palm Trunk via Injection Moulding Process

被引:2
|
作者
Lee, Chuan Li [1 ]
Chin, Kit Ling [1 ]
H'ng, Paik San [1 ,2 ]
Khoo, Pui San [3 ]
Hafizuddin, Mohd Sahfani [1 ]
机构
[1] Univ Putra Malaysia, Inst Trop Forestry & Forest Prod, Serdang 43400, Malaysia
[2] Univ Putra Malaysia, Fac Forestry & Environm, Serdang 43400, Malaysia
[3] Univ Teknol Malaysia, Ctr Adv Composite Mat, Johor Baharu 81310, Malaysia
关键词
wood plastic composite; oil palm trunk; chemi-thermomechanical pulp; polypropylene; injection moulding; material formulation; processing parameter; MECHANICAL-PROPERTIES; WOOD FIBERS; PERFORMANCE; EXTRACTIVES;
D O I
10.3390/polym15061338
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
As the products made from wood-plastic composites (WPCs) become more sophisticated and required more detail profiles, the injection moulding processing method with wood pulp as the reinforcing material is the answer to cater to the rapid change and demands of composite products. The general objective of this study was to study the effects of the material formulation, as well as the injection moulding process parameters, on the properties of a polypropylene composite reinforced with chemi-thermomechanical pulp from oil palm trunks (PP/OPTP composite) via the injection moulding process. The PP/OPTP composite with a material formulation of 70% pulp/26% PP/4% Exxelor PO produced using injection moulding at 80 degrees C as the mould temperature and with 50 tonnes of injection pressure exhibited the highest physical and mechanical properties. The increment loading of pulp increased the water absorption capacity of the composite. Higher loading of the coupling agent effectively reduced the water absorption capacity and increased the flexural strength of the composite. The increase in mould temperature from unheated to 80 degrees C prevented excessive heat loss of the flowing material, which enabled the molten material to flow better and filled up all cavities in the mould. The increased injection pressure slightly improved the physical properties of the composite, but the effect on the mechanical properties was insignificant. For the future development of WPCs, further studies should be focused on the viscosity behaviour, as a greater understanding of the processing parameters' effects on the PP/OPTP's viscosity behaviour will lead to improved product design and enable great potential usage of WPCs.
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页数:21
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