Search results for "Heat deflection temperature"

showing 3 items of 3 documents

Mechanical behaviour of Mater-Bi/wood flour composites: a statistical approach

2008

Interest in biocomposites (lignocellulosic filled biopolymers) started in the 90s, due to environmental advantages, related to the full biodegradability of both matrix and filler, economical issues (organic fillers usually come from sawmill or agriculture wastes) and aesthetical issues (wood filled biopolymers could be particularly pleasant if used for indoor furnishing and automotive interior). In this work, a method for a systematic study of the properties of Mater-Bi®/wood flour composites is presented. A two-level full factorial model was built. It allows investigating the effects of multiple operative variables on the observed properties, their contributions, their optimal combinations…

chemistry.chemical_classificationFiller (packaging)Materials sciencestatistical properties/methodelectron microscopyMixing (process engineering)polymer-matrix composites (PMCs)Izod impact strength testWood flourPolymerAspect ratio (image)Settore ING-IND/22 - Scienza E Tecnologia Dei MaterialichemistryMechanics of MaterialsCeramics and CompositesHeat deflection temperaturemechanical propertieComposite materialElastic modulus
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Heat in Metal Cutting

2008

This chapter provides comprehensive knowledge regarding thermal effects during the cutting process with both uncoated and coated cutting tools. Main heat sources and flowing heat fluxes into the tool, chip and workpiece are characterized and quantified. The heat distribution models that allow the analytical prediction of heat partition between the tool and the chip are specified. They consider such thermal properties as specific heat, thermal conductivity and diffusivity, Peclet thermal number, and heat transmission ratio, all as functions of temperature. Finite element method and finite difference method simulations applied to the prediction of temperature fields are outlined for turning a…

0209 industrial biotechnologyEngineering drawingMaterials scienceCutting toolMetallurgyMechanical engineering02 engineering and technology010501 environmental sciencesHeat sinkThermal diffusivity01 natural sciencesFinite element methodHeat pipe020901 industrial engineering & automationThermal conductivityHeat transferHeat deflection temperatureMetal cutting0105 earth and related environmental sciences
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Effect of adding wood flour to the physical properties of a biodegradable polymer

2008

Wood flour/polymer composites (WPC) gained a significant interest during the last decades, due to several advantages related to the use of a natural-organic filler rather than an inorganic-mineral one. However, most of the studies have been performed on composites based on polyolefin matrices. A further step is the use of biodegradable polymers instead of traditional ones. In this work, wood flour (WF), under the form of short fibers, with two different sizes (coarse and fine) was added to a corn starch based biodegradable polymer of the Mater-Bi family. The effect of WF size, WF content, thermal treatment on the mechanical properties was investigated. The tensile mechanical tests showed an…

Materials sciencefood and beveragesWood flourIzod impact strength testBiodegradable polymerPolyolefinchemistry.chemical_compoundchemistryMechanics of MaterialsUltimate tensile strengthCeramics and CompositesHeat deflection temperaturePolymer blendComposite materialElastic modulus
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