Composite wood products
ELHAM MARZBAN MORIDANI; Mohammad Talaeipoor
Abstract
In this study, physical properties of composite produced using recycled polymer (polypropylene and polyethylene) filled with two types of paper mill sludge (sludge on the DAF and waste water sludge) were investigated. Three levels of paper sludge (15, 30 and 45 wt %) were used to produce composites. ...
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In this study, physical properties of composite produced using recycled polymer (polypropylene and polyethylene) filled with two types of paper mill sludge (sludge on the DAF and waste water sludge) were investigated. Three levels of paper sludge (15, 30 and 45 wt %) were used to produce composites. Haake machine was used to blend materials and to produce standard samples; injection molding system was utilized. Density, water absorption and thicknesses swelling of composites were measured. The increasing of both paper mill sludge (sludge on the DAF and wastewater sludge) to the recycled polyethylene and polypropylene increased the density of composites. But, comparing the data obtained from density measurement with literature showed that utilization of paper mill sludge produced relatively lower density and cost on the unit volume basis. Adding both paper mill sludge (sludge on the DAF and waste water sludge) increased water absorption and thicknesses swelling. The samples containing polypropylene and waste water sludge showed lower water absorption and thicknesses swelling compared with other composite.
Composite wood products
Hamid Aibaghi esfahani; Mehdi Kalagar; Elham Marzban moridani
Abstract
In this study, mechanical properties of high density polyethylene (as matrix) and olive mill sludge (as filler / reinforcement) composites were investigated. There levels of paper sludge (15, 30, 40 and 50 wt %) were used to produce composites. The effect of maleic anhydride grafted polyethylene (MAPE) ...
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In this study, mechanical properties of high density polyethylene (as matrix) and olive mill sludge (as filler / reinforcement) composites were investigated. There levels of paper sludge (15, 30, 40 and 50 wt %) were used to produce composites. The effect of maleic anhydride grafted polyethylene (MAPE) as coupling agent on the mechanical properties composite was investigated and then, these composites (with coupling agent) were compared with composites without coupling agent. For blending materials from extruder and produce of mechanical standard sample from injection molding were used. Mechanical properties containing tensile properties (modulus of elasticity and tensile strength) and impact strength were studied. The result of obtaining from modulus of elasticity showed that with adding olive mill sludge to the polyethylene cause to signification increasing in modulus of elasticity were compared to pure polyethylene. Tensile strength composite increasing with adding olive mill sludge compared to pure polyethylene but maximum measure of tensile strength related to composites contain 30% olive mill sludge and coupling agent. Also adding 15% olive mill sludge to polyethylene cause to improved impact strength in compared pure polyethylene, but with adding more olive mill sludge (30, 40 and 50%), impact strength in composites were decreased. The used of coupling agent in the total manufactured composite cause to improved in impact strength of composites. The addition of a coupling agent (MAPE) to the composition resulted in an increase in mechanical properties of the composites that indicating enhanced matrix–olive mill sludge interfacial adhesion.
Elham Marzban Moridani; Mohammad Talaeipour; Amir houman Hemmasi; esmaeil Ghasemi; Mehdei Kalagar
Abstract
In this research, the mechanical properties of composite produced from recycled polymers (polyethylene and polypropylene) and paper mill sludge from two different sources (waste water sludge (s) and sludge on the DAF) were examined. Three levels of paper sludge (15, 30 and 45 wt %) were used to produce ...
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In this research, the mechanical properties of composite produced from recycled polymers (polyethylene and polypropylene) and paper mill sludge from two different sources (waste water sludge (s) and sludge on the DAF) were examined. Three levels of paper sludge (15, 30 and 45 wt %) were used to produce composites. Haake machine was used to blend materials and to produce standard samples, injection molding system was utilized. The mechanical properties including bending (strength and modulus) and impact strength were measured. The results showed that composites containing PP polymer and waste water sludge have higher mechanical properties than PE polymer and sludge on the DAF. The addition of both types of sludge as filler, results in enhancement of tensile properties compare to pure polymer. In the case, the higher content of sludge on the DAF was used, tensile strength of the composite decreased. Adding both types of sludge as filler, impact strength was lower than pure polymer. It was shown that composites containing sludge on the DAF have lower impact property than waste water sludge.
