|
THE TESTS OF OUR QUALITY CONTROL LABORATORY
1- Flame Retardancy Test; In this test 1. 6mm standard test stick gets treated with the flame for some certain time and after the burner is turned off we have to count (by cronometer) that how long it takes until no flame is visible. The most important specifications in this test are that whether there are any falling particles and how many seconds takes the fire to go off. Then it can be decided whether this material Vo or Vý or V2 flame retarded according to the UL – 94 standards.
2- Notched Impact Test (IZOD); In this test first, a little standard notch and then the stable impact is applied to the notched IZOD stick. The energy that comes out from this impact is displayed on the screen . This is put in to the formulation and the impact strength of the material can be calculated in kj / m² unit.
3- Vicat Softening Point; The principle of this test is that determination of the temperature at which a standart indenter penetrates 1 mm into the surface of a plastics test specimen under the stable load when the temperature is raised at a uniform rate.
4- High Deflection Temperature; The determination of the temperature at which a specified deflection occurs when a standard test specimen of plastics or ebonite is subjected to bending stress producing one of the nominal surface stresses chosen as the test precences, when the temperature is raised at a uniform rate.
5- Melt Flow Index; This international Standard specifies a method for the determination of the melt flow rate of molten thermoplastics materials under specified conditions of temperature and pressure. In this way we can process the material more conveniently.
6- Density Measurement; The weigh of the granule both in the ethyl alcohol and in the air is measured and put in the particular formulation. In this way we can calculate the density of the material.
7- Tensile Strength Test; In this test the specified test specimen is put correctly to the apparatus and then let it get pulled. As the break of the specimen occurs the result parameters are shown in the computer screen. These values are; “Tensile Strength at Yield, Tensile strength At Break, Tensile Elongation At Break, Tensile Elongation At Yield”
8- Glow Wire Test; In this test, the plastics test specimen is applied to the wire whose temperature is raised up to 650ºC, 850ºC or 960ºC for some certain time. As a result, we can make a comment about the flammability of the material.
9- Ash Content Measurement; First of all, we have to burn the granules so that we can make sure there is no plastics left in the test environment. Let the burned material stay in the furnace at 600ºC and whatever is left is the ash content of the material. Our quality control experts identifies the type of the content.
10- Ball Test; In this test the plastics test specimen is put in the furnace at around 125ºC or 100ºC under the specified load which is applied as a ball. After one or two or required time, it is necessary to check whether the deformation occured or not.
11- Hardness Test; The hardness of thermoplastics materials can be measured with Shore D hardness apparatus, the hardness of the elastomers can be measured with Shore A hardness apparatus.
|
|
