Kepital® F Datasheet. Acetal (POM) Copolymer. Supplied by Korea Engineering Plastics Co., Ltd. Create your free Prospector account to view this. Informationen on KEPITAL® F POM grade from Korea Engineering Plastics Co. Ltd. KEPITAL’s product range, from standard unfilled grades to specialties, is .. Shear strength of KEPITAL F at various temperatures. (ASTM D, t 3 mm, .
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Contamination with other material Black speck. When a plastic is continuously exposed to evaluated temperature, the mechanical properties gradually deteriorate.
At this time the gate of the part is solidified entirely and no more material can be incorporated. In general, injection speed is set at high where there are flow marks, record marks and sink marks, on the other hand low injection rate is good to prevent jetting, blush, burn marks kepiyal gate smear, generated by high shear force against cavity wall.
It is therefore important to ensure the nozzle is never frozen or keptial during processing. Too low holding pressure Wear of non-return valve Improper cushion.
Material Data Center | Datasheet KEPITAL® F
If a material is used in a broad range of temperatures or if both plastic and metal parts are either assembled or molded together, the CLTE is very important in determining tolerance, interference, dimensional changes and in forecasting parts failure. In general, when the injection pressure increases, the shrinkage rate decreases.
The heat deflection temperature ISO 75 is the temperature at which specimen exhibits flexural deflection of 0. Washer fluid, Oils and Coolant etc. Therefore it should be taken into consideration in optimizing the back pressure. To obtain a good quality product, the mold temperature must be consistently maintained so that the temperature distribution in the mold may be achieved uniformly.
However, sometimes moisture that exists on the surface of pellet caused by improper handling or storage may result in a silver streak or nozzle drooling, so drying prior f200-03 molding may be necessary to prevent KEPITAL from these problems. However, to increase the efficiency of the dispersion of a f0-03 masterbatch color concentrates or pigment, higher mixing by increasing back pressure may be required. Finally part weight shows constant after the gate seal time. Rockwell Hardness of a plastic is divided into a M scale or a R scale, and the higher number the higher hardness.
The impact strength is the energy to withstand a dynamic impact rather than static stress. We appreciate your input. High moisture in granule Decomposition by over-heating Insufficient gas vent Air entrap into cylinder Contamination.
Volume resistivity ASTM D is the resistance measured based on the internal current of a material alone, and it may be used to determine its applicability as an insulator. When a mold temperature increases, the mold shrinkage rate increases, and post-mold shrinkage rate decreases.
Additional information about this material, like producer contact address, etc. The maximum value where operation is still possible is called the PV limit.
MatWeb is intended for personal, non-commercial use. Impact strength The impact strength is the energy to withstand a dynamic impact rather than static stress.
KEP Kepital® F Acetal Copolymer, Medium viscosity
At the temperature of a melting point or higher, the plastic becomes molten and starts to flow to be processed. Subscribe to Premium Services Searches: Figure shows the results of the spiral flow test in which the flow properties of standard unfilled grades were evaluated.
Increase injection speed Increase injection and holding pressure Increase melt kepitql mold temperature. Arc resistance ASTM D represents the time taken for insulation characteristics to be broken down by the current applied to the surface of an insulator.
To promote consistent tests with respect to differences in composition, testing fuels have been selected and used. Volume resistivity refers to the electrical resistance of a material that is measured when an electric field kepitxl applied across the unit cube of a test specimen. If an insulator is inserted in an electric field, electric charges in the insulator are separated into opposite electric charge directions of the electric field.
Figure shows stress-strain curves of tensile tests at various temperatures, and Figure shows dependence of the tensile strength on temperatures. In particular, when kepktal parts keital as pressure resistant containers, screw fasteners, insert formations and insertion parts for a posttreatment process, the creep property of material must be considered in advance.
Hardness of a plastic material is usually indicated in terms of Rockwell Hardness that measures surface pen-etration with a steel ball under specific conditions. Fracture or failure that results from this phenomenon is called fatigue failure. kepifal
Sales of plastic raw materials POM/South Korea engineering plastics/Kepital F20-03 BBK
The following figure shows f20-3 hardness differences as a function of the viscosity of the standard unfilled grades. A thermoplastic material may show the changes in kepjtal properties and dimensions in environments in contact with specific chemicals. When static stresses are loaded to thermoplastics constantly, not only does the initial strain occur but also an incremental strain is followed as time goes by due to its viscoelastic property. Dielectric strength measurement ASTM D of plastic is determined by dividing the voltage with a specimen thickness that incurs current when a test specimen prepared by injection molding is placed between two electrodes, and a voltage is incrementally increased from 0.
If long-period interruption is expected, stop feeding granule and entirely eject out material from the cylinder and then lower cylinder and nozzle temperatures.
This is because of the fact that plastic materials are affected by varied factors such as temperature, stress and time.