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, .

Author: Kazrabar Zudal
Country: Papua New Guinea
Language: English (Spanish)
Genre: Automotive
Published (Last): 23 January 2015
Pages: 139
PDF File Size: 6.42 Mb
ePub File Size: 3.64 Mb
ISBN: 577-3-62648-420-4
Downloads: 25447
Price: Free* [*Free Regsitration Required]
Uploader: Vumi

Equipment Injection molding is one of the common manufacturing methods for thermoplastics including KEPITAL as to allow even complicated design and cost-effective production.

Radiation intensity and other conditions; filter combinations, temperature, cycle configuration, are specifically set up according to the test method. Copyright laws are applicable for the content of this system. Thermal conductivity Unlike metals, most thermoplastic materials are insulators with a low thermal conductivity. Additional information about this material, like producer contact address, etc. This includes all contents of this system. 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.

Material Data Center | Datasheet KEPITAL® F

Property under cyclic stress Designing based on a 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.

Shear strength represents the maximum load required to completely shear a sample by the maximum strength of a material that is influenced by shear stress. Figure shows the results of the spiral flow test in which the flow properties of standard unfilled grades were evaluated. 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 Constant 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.


As a rule of thumb, the hold time can be simply calculated wall thickness mm times 8. M-Base explicitly points out that any decision about the application of materials must be double checked with the producer of this material.

Most of the time affecting the cooling time is the hold time. Therefore, when designed, the fatigue properties of a material should be considered. In general OEM specification recommends the outdoor testing be conducted by means of weather-o-meter or outdoor exposure in Florida and Arizona.

A thermoplastic material may show the changes in mechanical properties and dimensions in environments in contact with specific chemicals. Heat deflection temperature The heat deflection oepital ISO 75 is the temperature at which specimen exhibits flexural deflection of 0.

In general, it is a most widely used characteristic to identify the electrical behavior of plastics. Thermoplastic materials are classified into amorphous and semi-crystalline polymers.

Fracture or failure that results from this phenomenon is called fatigue failure. More importantly cycle time is closely related to part thickness. When a mold temperature increases, the mold shrinkage rate increases, and post-mold kdpital rate decreases. Free online registration is available. Wear The wear occurs from mechanism motions such as abrasion, adhesion and fatigue etc among two or more sliding materials. 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.

Since f20-003 degree of property deterioration depends upon environmental factors such as temperature, stress, and time, it is f20-30 to select a KEPITAL grade upon the designated environmental condition. Take precautions on handling Clean the cylinder.

Low clamping force Kepittal high injection pressure or holding pressure Too fast Injection speed Mold wear.

KEP :: for a better future

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. Furthermore, higher cooling rates or cooling under higher pressures causes less volume shrinkage. Creep is the total strain of initial elastic deformation and plastic flow for loading time. In general the friction force causes a surface temperature increases at high velocity and a squeak noise under a certain pressure.


Contamination with other material Black speck. In general, there are methods for evaluating the fatigue characteristic of plastics. When static stresses are loaded f0-03 thermoplastics constantly, not only does the initial strain occur but also an f2-003 strain is followed as time goes by keputal to its viscoelastic property. Questions or comments about MatWeb? Home Imprint Privacy Statement About.

Sales of plastic raw materials POM/South Korea engineering plastics/Kepital F20-03 BBK

Resistance to fuels and chemicals A thermoplastic material may show the changes in mechanical properties and dimensions in environments in contact with specific chemicals.

Any use of this information falls under the rules of our disclaimer.

Increase injection speed Change the gate location or enlarge gate size Increase mold temperature. The following figure shows the hardness differences as a function of the viscosity of the standard unfilled grades. At this time the gate of the part is solidified entirely and no more material can be incorporated. KEPITAL FA is reinforced to have high rigidity with electrical conductivity as to meet requirement for high mechanical strength and low tendency to creep.

Those properties are determined from the stress and strain curve S-S curves that shows elastic and plastic behavior of a material under a dynamic load. In general, when the injection pressure increases, the shrinkage rate decreases. Unlike metals, most thermoplastic materials are insulators with a low thermal conductivity.