polypropylene with wood fibre

Effects of Wood Fiber Characteristics on Mechanical Properties of ... Commercial wood flour, the most common wood-derived filler for thermoplastics, is produced in a mixture of particle sizes and generally has a lower aspect ratio than wood and other natural fibers. To understand how wood flour and fiber characteristics influence the mechanical properties of polypropylene composites, we...

Wood Fiber Reinforced Polypropylene Composites: Compression ... 14 Feb 2007 ... Polypropylene-wood fiber composites are used as substitutes for more expensive and less environmentally friendly materials. Polypropylene is a recyclable polymer and wood fibers derive from a renewable source and are biodegradable. The use of wood fibers in a polypropylene matrix includes many...

Morphology and Thermo Mechanical Properties of Wood ... 30 May 2012 ... Substantial research has been carried out on the surface modification of wood fibers with coupling agents to improve the strength properties of WPCs (Woodhams et al., 1984; Li Q. & Matuana L. M., 2003), among these, the addition of maleated polypropylene (MAPP) in polypropylene (PP)-based WPCs...

Microcellular Wood Fibre Reinforced PP Composites | International ... Microcellular wood fibre reinforced polymers have practical significance given the possibility of reducing the density of automotive components due to their microcellular structure, as well as processing and performance advantages. A microcellular foaming process with a chemical foaming agent was applied at an...

Reprocessing of wood fibre reinforced polypropylene composites ... This paper describes the effects of reprocessing on the physical and mechanical properties of composites based on radiata pine (Pinus radiata) fibre in a polypropylene (PP) matrix. Composites, containing either 40 wt% or 50 wt% fibre with 4 wt% maleated polypropylene (MAPP) as a coupling agent, were reprocessed up...

Performance of polypropylene–wood fiber composites - ScienceDirect Polypropylene–wood fiber composites were prepared in the optimal mixture conditions determined in a previous work (180°C, 60 rpm, 10 min). Tensile, impact and three-point bending tests were performed in order to evaluate the adhesion between matrix and wood fibers. Other than mixture conditions, drying temperature...

Microcellular Wood Fibre Reinforced Polypropylene Composites in ... Microcellular foams of polypropylene containing wood fibres, cell sizes on the order of 10 to 50 μm were produced by injection moulding. The relationships of processing/structure/property were investigated for wood fibre- thermoplastics composites foaming with a chemical blowing agent. Wood polypropylene composites...

Creep and impact properties of wood fibre–polypropylene ... Wood fibre reinforced polypropylene composites of different fibre content (40, 50 and 60% by weight) have been prepared and wood fibres (hard and long fibre) were treated with compatibiliser (MAH-PP) to increase the interfacial adhesion with the matrix to improve the dispersion of the particles and to decrease the water...

Mechanical properties of wood–fiber reinforced polypropylene ... While the maleic anhydride modified polypropylene (MAPP) is most commonly used as compatibilizer to improve interfacial adhesion between hydrophilic wood–fibers and hydrophobic polypropylene, in this study, a novel compatibilizer (m-TMI-g-PP) with isocyanate functional group was synthesized by grafting...

Properties of Wood Fibre-Polypropylene Composites: Effect of Wood ... This study examined the effect of type of wood fibre source on the physical and mechanical properties of wood fibre-polypropylene composites. Wood flour, fibres of heat-treated wood and pellets were used as sources of wood fibres in the manufacturing process. All studied wood fibre-polypropylene composites were made...

Wood Fiber Reinforced Polyethylene and Polypropylene ... ABSTRACT: Wood plastic composite with high modulus and impact strength were manufactured by combining polyethylene (PE) or polypropylene (PP) with wood fiber (WF) using twin-screw extruder techniques. The advantage of using low melt viscosity polymer matrices is that it enhances the modulus and reduces the...

Improvement of the flame retardancy of wood-fibre/polypropylene ... 29 Jun 2015 ... Improvement of the flame retardancy of wood-fibre/polypropylene composites with ideal mechanical properties by a novel intumescent flame retardant system. Ya-Hui Guan , Wang Liao *, Zhao-Zan Xu , Ming-Jun Chen , Jian-Qian Huang and Yu-Zhong Wang * Centre for Degradable and Flame-Retardant...

Structure and Mechanical Behaviour of Wood-Fibre ... - DiVA 19 Sep 2014 ... Structure and Mechanical Behaviour of Wood-Fibre Composites. Digital. Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and. Technology 1158. 34 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-554-8988-5. Wood fibres have several advantages compared to...

Fiber Pretreatment and Its Effects on Wood Fiber Reinforced ... This study investigates the effect of pretreatment of fiber with NaOH and coupling with maleated polypropylene (MAPP) on the physical and mechanical properties of composites, based on radiata pine (Pinus Radiata) fiber, produced with a polypropylene matrix, using a twin-screw extruder followed by injection molding.

Mechanical properties of wood‐fiber/toughened isotactic ... lsotactic Polypropylene Composites. BWNG-DAE PARK* and JOHN J. BALATINECZ. Faculty of Forestry, University of Toronto. Toronto, Ontario, M5S 3B3, Canada. This study investigates the mechanical properties of wood-fiber/ toughened PP composite modified by physical blending with an EPDM rubber to improve...

Fiber Pretreatment and Its Effects on Wood Fiber Reinforced ... Fiber Pretreatment and Its Effects on Wood Fiber Reinforced. Polypropylene Composites. M. D. H. BEG AND K. L. PICkERING. Department of Materials and Process Engineering, University of Waikato, Hamilton, New Zealand. This study investigates the effect of pretreatment of fiber with NaOH and coupling with maleated...

Injection moulded microcellular wood fibre–polypropylene composites An experimental investigation was conducted to research the microcellular behaviour in the injection moulding foam processing of polypropylene–wood fibre composites using chemical foaming agents. The effects of fibre type (hard and soft wood fibre) and different chemical foaming agents (endothermic, exothermic and...

Effects of wood fiber characteristics on mechanical ... - Forest Service Description. Commercial wood flour, the most common wood-derived filler for thermoplastics, is produced in a mixture of particle sizes and generally has a lower aspect ratio than wood and other natural fibers. To understand how wood flour and fiber characteristics influence the mechanical properties of polypropylene...