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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Subscribe to Premium Services Searches: Over-heating or too long residence time in cylinder Insufficient gas vent Fast injection speed. A plastic expands when temperature increases. At temperatures exceeding the melting point, the specific heat in a molten state is exhibited.
In particular, when designing parts such 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.
Sales of plastic raw materials POM/South Korea engineering plastics/Kepital F20-03 BBK
The processing window; temperature versus melt residence time in the cylinder for standard unfilled grade is shown in Figure Thermal properties Thermal properties are important elements for establishing the processing conditions of a plastic material and service temperature of a finish part. TSH shows extremely low friction properties in sliding against itself even under high pressure in Figure In general the friction force causes a surface temperature increases at high velocity and a squeak noise under a certain pressure.
The shear strength is determined by dividing the force required to shear the specimen by the area of the sheared edge. The heat deflection temperature ISO 75 is the temperature at which specimen exhibits flexural deflection of 0. Lower f0-03 cylinder temperature Check for gas vent Decrease injection speed.
Rockwell Hardness of a plastic is divided into a M scale or a R scale, and the higher number the higher hardness. Material Data Center is a leading international information system for the plastics industry. 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.
Troubleshooting guide for KEPITAL Troubleshooting guide for KEPITAL Processing problem Causes Remedies Sticking in cavity Higher resistance to eject force Insufficient cooling time Decrease injection pressure and check for undercut or kepitao draft Clean mold surface Increase the number of ejecting pins Lower the mold temperature and increase mold close time Short shot Insufficient flowability by low melt or mold temperature Improper design with small gate or narrow flow channel Unbalanced filling Insufficient metering stroke Increase the cylinder temperature and mold ke;ital.
M-Base explicitly points out that any decision about the application of materials must be double checked with the producer of this material. Tribological properties Tribological properties are highly affected by driving conditions such as pressure on the contacted surface, velocity, temperature, surface roughness etc. The test results of F to gasoline and diesel are shown in Figures and Material datasheets available free. Washer fluid, Oils and Coolant etc.
Designing based on f2-03 dynamic structure analysis, obtained where a part is subjected to loading once, can only provide information if a part can be used without fracture under the single loading environment.
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. 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.
Arc resistance may sometimes be influenced by moisture, dust, etc. Please contact us at webmaster matweb. Korea Engineering Plastics Co.
Material Data Center | Datasheet KEPITAL® F
Low injection speed Low holding pressure Low melt or mold temperature. Figure shows stress-strain curves of tensile tests at various temperatures, and Figure shows dependence of the tensile strength on temperatures. Since screw RPM is dependant on diameter of screw, screw line speed by screw can be utilized.
Specific heat refers to the calories required to raise the temperature of a unit mass of material f20-0 one degree.
KEP Kepital® F Acetal Copolymer, Medium viscosity
Dielectric constant ASTM D represents the extent of separation between positive charges and negative charges that are induced at this time. The following figure shows the hardness differences as a function of the viscosity of the standard unfilled grades.
Melting point Melting temperature, Tm Thermoplastic materials are classified into amorphous and semi-crystalline polymers. 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. 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.
Volume resistivity refers to the electrical resistance of a material that is measured when an electric field is applied across the unit cube of a test specimen. Tribological properties are highly affected by driving conditions such as pressure on the contacted surface, velocity, temperature, surface roughness etc. As a rule of thumb, the hold time can be simply calculated wall thickness mm times 8.
Therefore, when designed, the fatigue properties of a material should be considered. The melting point is the temperature at which the crystalline region melts with significant volume expansion. In addition high back pressure may be used to eliminate unmelted particles. 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.
It is also important to review both short-term strength, modulus, elongation and impact strength etc and long-term properties creep, stress-relaxation and fatigue etc in determining which material to use.
In general OEM specification recommends the outdoor testing be kepial by means of weather-o-meter or outdoor exposure in Florida and Arizona. Too low holding pressure Wear of non-return valve Improper cushion.