DIN 53122 PDF

Kiganris With the usage of our services you permit us to use cookies. If these conditions are fulfilled, the water vapour transmission rate, WVTR, of similar samples of different thickness is inversely proportional to the thickness, i. Subtract the blank values from the values measured for the sample dishes having undergone the same treatment. Then cover the dishes with the samples and firmly seal them to the dish wall, ensuring that the temperature of the sealant and any annular template used does not bring about any alteration in the sample. Cover templates of the type shown in figure 4 facilitate the sealing operation. Thus the predictions according resitance, physical and chemical reactions under process conditions can help the selection process of materials.

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Murr DIN Standard — Testing Instruments — Labthink Details of any treatment of samples to remove the residual solvent shall be included in the test report.

It is advantageous to use material with a particle size of 1,5 mm to 2 mm that passes through a 4 mm sieve, has been freed of any fines using a 1,6 mm sieve, and has been dried in the normal manner.

We will test with other climate conditions on your request. For non flat specimens: Dim, however, is generally unnecessary in the case of non-hygroscopic film or sheets or of those having low water vapour transmission rates. Details of sealing samples 8 8. This equation applies if the interval between consecutive weighings is 24 hours see subclause 8.

Cover templates of the type shown in figure 4 facilitate the sealing operation. If these conditions are fulfilled, the water vapour transmission rate, WVTR, of similar samples of different thickness is inversely proportional to the thickness, i. Water or water vapour. We also do the test sample manufacture for you. Subtract the blank values from the values measured for the sample dishes having undergone the same treatment.

Continued on pages 2 to 7. Also possible temperature profiles nonisothermic measurements for the determination of morphology changes and the influence of media and pressure on polymer properties.

Two points are important in selecting the size of dish, namely preventing the desiccant from becoming saturated during the test, on the one hand, and minimizing the total mass, on the other, to reduce its effect on the accuracy of weighing. It may also be due to sample defects and to differences in water vapour transmission rates in the cin of samples with single-side or even double-side lamination.

It is advantageous to use a light metal lid that covers the dish when it is removed from the test atmosphere and weighed so that the sample releases as little water as possible to the surrounding air during weighing.

Check that the increase in mass between two consecutive weighings is at least 5 mg. Weigh the dish and sample and the lid if fitted to an accuracy of 0,1 mg, then place it in the evaporation chamber and remove the lid. Since the water vapour transmission rate depends on factors that include the thickness and matrix of the sample material, it is not a material constant.

Make such blank samples in the same way and subject them to the same conditions, but without desiccant in the dishes. In blank , examine samples having low permeation rate and large thickness e. They shall not exhibit any surface inhomogeneities e. All dimensions are in millimetres. If the samples have been prepared using solvents, residues of the latter left in the sample may affect the test results.

If the wax is spread out on the rims with the aid of a hot spatula, check that the seal is still intact after the sealant has cooled.

With the usage of our services you permit us to use cookies. On request, we measure your sample thickness according to DIN The permeation coefficient is calculated as the slope of the displaced against time. Then cover the dishes with the samples and firmly seal them to the dish wall, ensuring that the temperature of the sealant any annular template used does not bring about any alteration in the sample. Evaporation chamber without dishes shown in figure 2 or 3 NOTE 2: In the case of highly transmissive samples, the number of dishes in the evaporation chamber may be kept low to ensure a constant and uniform distribution of humidity within the tolerances for the test atmosphere concerned see subclause 8.

The water that has permeated through the sample is carried to detector by a second carrier gas. This can be remedied, for example, by increasing the mass of desiccant and repeating the test. See DIN for other methods of determining water vapour transmission rates e.

Use atmosphere B dni rubber sheets, atmosphere D for plastic film and laminated paper, and atmospheres D and E for paper and board. Use one of the following atmospheres in the evaporation chamber: Most Related.

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DIN 53122-2:1982-07

Dourisar In blank tests, examine samples having low permeation rate and large thickness e. It is advantageous to use a light metal lid that covers dish when it is removed from the test atmosphere and weighed so that the sample releases as little water as possible to the surrounding air during weighing. They shall not exhibit any surface inhomogeneities e. Please inform us, if your samples tend to mechanical failure under applied pressure of the test gas or the sealings. Aluminium dish Figure dn All dimensions are in millimetres. In keeping with current practice in standards published by the International Organization for Standardization ISOa comma has been used throughout as the decimal marker.

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DIN 198 bis DIN 53122 Teil 2.

Goltira A tempered test chamber is flushed by a carrier gas with a defined humidity. It is advantageous to use material with a particle size of 1,5 mm diin 2 mm that passes through a 4 mm sieve, has been freed of any fines using a 1,6 mm sieve, and has been dried in the normal manner. DIN This, however, is generally unnecessary in the dni of non-hygroscopic film or sheets or of those having low water vapour transmission rates. It is advantageous to use a light metal lid that covers the dish when it is removed from the test atmosphere and weighed so that the sample releases as little water as possible to the surrounding air during weighing. The permeation gas displaces liquid out of a U-tube which is connected with the other chamber.

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