pvc extrusion!

pvc extrusion

Comprehensive Analysis

1) "Pvc" -- As to pvc extrusion PVC Function: abbreviation polyvinyl chloride Pronunciation Symbols Polyvinyl chloride Density 1380 kg/m3 Young's modulus (E) 2900-3400 MPa Tensile strength(σt) 50-80 MPa Elongation @ break 20-40% Notch test 2-5 kJ/m2 Glass temperature 87 °C Melting point 212 °C Vicat B1 85 °C Heat Transfer Coefficient (λ) 0.16 W/m.K Linear Expansion Coefficient (α) 8 10-5 /K Specific heat (c) 0.9 kJ/(kg·K) Water absorption (ASTM) 0.04-0.4 Price 0.5-1.25 €/kg 1 Deformation temperature at 10 kN needle load source: [1] Polyvinyl chloride Polyvinyl chloride, (IUPAC Polychloroethene) commonly abbreviated PVC, is a widely used thermoplastic polymer. In terms of revenue generated, it is one of the most valuable products of the chemical industry. Globally, over 50% of PVC manufactured is used in construction. As a building material, PVC is cheap and easy to assemble. In recent years, PVC has been replacing traditional building materials such as wood, concrete and clay in many areas. Despite appearing to be an ideal building material, concerns were raised about the costs of PVC to the natural environment and human health. There are many uses for PVC. As a hard plastic, it is used as vinyl siding, magnetic stripe cards, window profiles, gramophone records (which is the source of the name for vinyl records), pipe, plumbing and conduit fixtures. The material is often used in Plastic Pressure Pipe Systems for pipelines in the wate..." 2) "Extrusion" -- As to pvc extrusion ex·tru·sion Pronunciation: ik-'strü-zh&n Function: noun Etymology: Medieval Latin extrusion-, extrusio, from Latin extrudere : the act or process of extruding; also : a form or product produced by this process Pronunciation Symbols For the process that creates volcanic rock, see extrusive (geology). Extrusion is a manufacturing process used to create long objects of a fixed cross-sectional profile. A material, often in the form of a billet, is pushed and/or drawn through a die of the desired profile shape. Hollow sections are usually extruded by placing a pin or piercing mandrel inside of the die, and in some cases positive pressure is applied to the internal cavities through the pin. Extrusion may be continuous (producing indefinitely long material) or semi-continuous (producing many short pieces). Some materials are hot drawn whilst others may be cold drawn. The feedstock may be forced through the die by various methods. A single or twin screw auger, powered by an electric motor, or a ram, driven by hydraulic pressure (for steel alloys and titanium alloys for example), oil pressure (for aluminum), or in other specialized processes such as rollers inside a perforated drum for the production of many simultaneous streams of material. Extrusion simulation tools help to understand the extrusion process and to optimize development of tools and products. Commonly extruded materials include metals, polymers, ceramics, and foodstuffs. 1 Metal 2 Plastic (Injection moulding) 3 Ceramic 4 Food 5 Roadmarking compound 6 See also 7 External links Metal extrusion is used by industry for various purposes such as: Copper pipe for plumbing Aluminium extrusion profiles for tracks, frames, rails, and mullions Steel rods or track Titanium aircraft components including seat tracks, engine rings, and other structural parts Steel and titanium extrusions use glass powder as a lubricant. Invented in France in 1935 by Mr. Séjournet, this process was patented throughout the world and helped launch indust..." 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