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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Injection molding In mold fabrication, it is essential to previously review the dimensional precision, flow characteristics of the raw material, consistency of product and cost-effectiveness etc. The shrinkage value, provided by KEP can be utilized in designing a part in prototype step.
Behavior under long-term static stress 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. For access to this extra information a registration is requested.
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Figure demonstrates that shrinkage rate is high if hold pressure time is shorter than gate seal time. Thermal conductivity Unlike metals, most thermoplastic materials are insulators with a low thermal conductivity.
Therefore, when thermal degradation is noticeable, the cylinder should be flushed by purging out melt and the cylinder temperature must be reduced at the same time. TSH shows extremely low friction properties in sliding against itself even under high pressure in Figure This includes all contents of this system. Heat deflection temperature The heat deflection temperature ISO 75 is the temperature at which specimen exhibits flexural deflection of 0.
Free online registration is available. Improper compression zone length may not only over-heat material but also lack of pressure build-up in the plasticizing.
Or if you don’t have an account with us yet, then click here to register. Hardness 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. However, to increase the efficiency of the dispersion of a color masterbatch color concentrates or pigment, higher mixing by increasing back pressure may be required.
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The service temperature of plastics should be determined from long-term heat ageing experiments. In addition, in some cases, pre-drying is effective in reducing odor, mold deposit and in achieving a good appearance. Questions or comments about MatWeb?
Tribological properties Tribological properties are highly affected by driving conditions such as pressure on the contacted surface, velocity, temperature, surface roughness etc. Temperature and soaking time have an influence on those properties. High moisture in granule Decomposition by over-heating Insufficient gas vent Air entrap into cylinder Contamination. Figure shows stress-strain curves of tensile tests at various temperatures, and Figure shows dependence of the tensile strength on temperatures.
Surface resistivity ASTM D is insulation resistance when certain voltage is applied across the surface of material. Any decision about the application of materials must be double checked with the producer of this material.
Sales of plastic raw materials POM/South Korea engineering plastics/Kepital F20-03 BBK
Surface Resistivity Surface resistivity ASTM D is insulation resistance when certain voltage is applied across the surface of material. Material Data Center offers a comprehensive plastics database, calculation tools, CAE interfaces, a literature database and an application f220-03.
The demand for longer lifetime and cost-effective products has recently increased; it has brought up the importance and interest in friction and wear characteristics, especially for self-lubricated products.
We appreciate your input. Increase injection pressure and speed Enlarge the gate Adjust runner balance Increase metering stroke. The melting point is the temperature at which the crystalline region melts with significant volume expansion.
F200-3 general OEM specification recommends the outdoor testing be conducted by means of weather-o-meter or outdoor exposure in Florida and Arizona. To promote consistent tests with respect to differences in composition, testing fuels have been selected and used.
Low injection speed Low holding pressure Low oepital or mold temperature. Insufficient flowability by low melt or mold temperature Improper design with small gate or narrow flow channel Unbalanced filling Insufficient metering stroke.
When the pressure is elevated to a certain extent, the resin and gas in a cylinder are explosively discharged through the filling hopper, which could cause serious injury to operators and damage to an injection molding machine. Figure shows the results of the spiral flow test in which the flow properties of standard unfilled grades were evaluated.
As shown in Figurethe weight of a molded part increases upon the hold pressure time and then stops at a certain point. Specific heat Specific heat refers to the calories required to raise the temperature of a unit mass of material by one degree.