Precise compounding relies on heat transfer fluid.The acquisition of a two-roll milling machine milling machine Machine tool that rotates a circular tool with numerous cutting edges arranged symmetrically about its axis, called a milling cutter. The metal workpiece is usually held in a vise clamped to a table that can move in three perpendicular directions. enabled the Arias Technical Center of AGC AGC Automatic Gain Control AGC Automotive Glass Cartridge (fuse) AGC Associated General Contractors AGC Associated General Contractors of America AGC Atypical Glandular Cells AGC Attorney-General's Chambers Chemicals Americas to develop fluoroelastomer and Fluon melt processible fluoropolymer A fluoropolymer is a polymer that contains atoms of fluorine. It is characterized by a high resistance to solvents, acids, and bases. Fluoropolymers were discovered serendipitously in 1938 by Dr. Roy J. Plunkett. compounds for new applications. Since the production of fluoroelastomer and fluoropolymer compounds requires heat tolerances as precise as [+ or -] 5[degrees]F, it is critical to control the roll temperature in cooling oz heating modes. In elastomer elastomer (ĭlăs`təmər), substance having to some extent the elastic properties of natural rubber. The term is sometimes used technically to distinguish synthetic rubbers and rubberlike plastics from natural rubber. compounding, excess heat generated by the shear forces shear force Force acting on a substance in a direction perpendicular to the extension of the substance, as for example the pressure of air along the front of an airplane wing. Shear forces often result in shear strain. of the counter-rotating rolls is removed by cooling the rolls to promote good handling and reduce sticking. Also, in the heating mode, the mill temperature of various fluoropolymer compounds needs to be maintained at high temperature, where the company's NF (non-fouling) heat transfer fluid is said to excel. The heat transfer fluid is said to be crucial to temperature control of the roll mill. In order to manage the broad temperature range effectively, the supplier who furnished the two-roll milling machine to AGC recommended the NF heat transfer fluid for the machine's heating and cooling unit. ParathermNF is said to withstand the temperature extremes that fluoropolymers require with efficiency, safety and cost-effectiveness. Fluoropolymers are said to provide superior properties for high-speed data cables and other wire and cable applications, as well as automotive and industrial seals and gaskets and down-hole oil and gas applications. Resistance to heat and harsh chemicals, low conductivity conductivity /con·duc·tiv·i·ty/ (kon?duk-tiv´i-te) the capacity of a body to transmit a flow of electricity or heat; the conductance per unit area of the body. con·duc·tiv·i·ty n. 1. , low friction and non-flammability are said to be among the properties that make fluoropolymers effective in a wide variety of applications. AGC's compounds employ unique filler systems, making the use of roll-milling machines advantageous for the development of these compounds. These types of compounds may tend to be abrasive, which can wear on the internal parts, such as the screw and barrel of an extruder. Roll-milling machines, on the other hand, are utilized externally, which is said to inherently reduce wear. The use of heat transfer fluids is said to provide a greater range of temperatures, enabling the roll-milling machine greater flexibility in the range of compounds it produces. As an example, manufacturing ETFE ETFE Ethylene/Tetrafluoroethylene Copolymer compounds and alloys requires temperatures of at least 275[degrees]C. Paratherm NF is said to maintain tight temperature tolerances. Paratherm Circle 9 on card [ILLUSTRATION OMITTED] |
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