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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In terms of frictional behavior, if pressure and speed gradually increase, at a certain point a material cannot withstand any further and start to molten. Specific heat Specific heat refers to the calories required to raise the temperature of a unit mass of material by one degree.
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. It is important to preview all possible kepitall properties; melting point, heat deflection temperature, coefficient of linear thermal expansion, thermal conductivity and long-term heat ageing resistance, prior to design. Tribological properties are highly affected by driving conditions such as pressure on the contacted surface, velocity, temperature, surface roughness etc.
The melting point is the temperature at which the crystalline region melts with significant volume expansion.
KEPITAL® F – KEP Americas
The processing window; temperature versus melt residence time in the cylinder for standard unfilled grade is shown in Figure For more information about Material Data Center visit www. Arc Resistance 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. Those properties are determined from the kepitak and strain curve S-S curves that shows elastic and plastic behavior of a material under a dynamic load.
Radiation intensity and other conditions; filter combinations, temperature, cycle configuration, are specifically set up according to the test method. High moisture in granule Decomposition by over-heating Insufficient gas vent Air entrap into cylinder Contamination.
Take precautions on handling Clean the cylinder.
In general OEM specification recommends the outdoor testing be conducted by kepitla of weather-o-meter or outdoor exposure in Florida and Arizona. Thermal properties are important elements for establishing the processing conditions of a plastic material and service temperature of a finish part. Increase clamping force Lower injection pressure or holding pressure Lower injection speed Repair mold.
Therefore it should be taken into consideration in optimizing the back pressure.
KEP Kepital® F Acetal Copolymer, Medium viscosity
Please contact us at webmaster matweb. Specific volume As shown in Figurethe molding shrinkage of KEPITAL results from both its high crystalline alignment in solidification and its thermal shrinkage from the molten state to the solid state as a function of temperature kwpital pressure.
It is because a material deforms not only in the tensile direction but also in its perpendicular direction. It is therefore important to ensure the nozzle is never frozen or obstructed during processing.
If surface finish is important or the service temperature of finished part is expected to be high, higher mold temperature is recommended. 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, keptial, dimensional changes and in forecasting parts failure.
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.
Sales of plastic raw materials POM/South Korea engineering plastics/Kepital F20-03 BBK
Friction is the resistance to sliding of two paired surfaces and is divided by dynamical friction coefficient or static friction coefficient. The maximum shear stress at which a material can be maintained prior to shearing punching is referred to as shear strength.
Resistance to light and weather is usually evaluated through accelerated weathering tests and outdoor exposures for specific times. In order to obtain a high quality of product out of KEPITAL, the recommendations and check-points on the injection molding machine are the following:. Appropriate injection pressure generally ranges to bar.
The later has both a crystalline kepitxl and an amorphous region in the final product. Therefore, the shrinkage rate must be taken into account in consideration of all possible factors.
Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units.
In general, there are methods for evaluating the fatigue characteristic of plastics 1 Load control method Load control 2 Strain control method Strain control 3 Strain control between grips method Position control. Dielectric F200-3 If an insulator is inserted in an electric field, electric charges in the insulator are separated into opposite electric charge directions of the kepiral field.
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