ISO 4624 PDF

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standards, ISO “Paints and Varnishes – Pull off-test for adhesion” and ASTM D “Standard Test Method for. Pull-Off Strength of Coatings Using. ISO – All rights reserved. PDF disclaimer. This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy. Peintures et vernis — Essai de traction. STANDARD. ISO. Permission can be requested from either ISO at the address below or ISO's.


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Details of the software products used to create this PDF file can be found in the . International Standard ISO was prepared by Technical. ISO specifies three methods (i.e. one dolly or two dollies on a painted panel and two dollies, one as painted substrate) for determining the adhesion. I.S. EN ISO is the adopted Irish version of the European Document EN ISO Peintures et vernis - Essai de traction (ISO ).

Paints, varnishes and plastics Pull-off test for adhesion ISO ISO Standard. Amendments This standard differs from DIN EN , September edition, in that details of sampling and test equipment have been changed. Paints, varnishes and their raw materials — Temperatures and humidities for conditioning and testing ISO Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. English version Paints. The European Standards exist in three official versions English.

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Iso _pull-off test for adhesion

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Carlos Alonso Belloso. Anonymous qD4jTcEX. Mido Nasser. Rk Sabarinathan. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. After curing of the adhesive, the bonded dolly assemblies are placed in a suitable tensile tester.

The test result is the tensile stress necessary to break the weakest interface adhesive failure or the weakest component cohesive failure of the test assembly. Revision of ISO The items of supplementary information are given in annex A. The tensile stress shall be applied in a direction perpendicular to the plane of the coated substrate and shall be increased at a substantially uniform rate, not greater than 2 , such that failure of the test assembly occurs within.

ISO 4624.pdf

Suitable designs for applying the tensile stress are shown in Figures 1 and 2. NOTE 1 Instead of a tensile tester, other types of pull-off adhesion testers mechanically, pneumatically, hydraulically or hand- driven may be used provided that they give similar results.

NOTE 2 The results can be influenced by the test assembly used. Furthermore, the results are not reproducible unless coaxial alignment of the tensile forces is ensured. Each dolly has a nominal diameter of see however following paragraph and sufficient thickness to ensure freedom from distortion during the test. It is recommended that the length of each dolly is not less than half its diameter. The faces of each dolly shall be machined perpendicular to its axis before use. Dollies with a diameter of may be used when the method for testing adhesion from one side only is used see 9.

If dollies of in diameter are used, 10 measurements shall be made to improve the precision. The diameter of the dollies shall be reported in the test report. A suitable design is shown in Figure 3. Depending on the mechanical properties of the paint system e.

It is permitted, if specified or agreed between the interested parties, not to cut when the paint systems are less than in layer thickness.

If cuts around the dolly have been made, this shall be mentioned in the test report and the type of cutting tool also mentioned. Key 1 Coating 2 Test piece 3 Dolly 4 Ball-and-socket sliding joint 5 Support suitably designed to allow for joint assembly 6 Ball-and-socket sliding joint Figure 2 — Example of a suitable test apparatus for the method described in 9.

To produce failure of the coating, it is essential that the cohesive and bonding properties of the adhesive are greater than those of the coating under test.

Preliminary screening of adhesives shall be carried out in order to determine their suitability for use. Suitable adhesives and, if applicable, their unmixed components shall cause little or no visible change in the coating under test when left in contact with the coating for a period equivalent to the curing time of the adhesive. Adhesives which give the highest results, which means the most coating-substrate adhesive failure, are preferred.

In most cases, cyanoacrylate, two-component solventless epoxide and peroxide-catalysed polyester adhesives have been found suitable. In special tests under highly humid conditions, the curing time of the adhesive shall be as short as possible. The use of two-pack quick-drying epoxy adhesive is preferable in these situations. NOTE Where failure is mainly associated with the adhesive, the use of another type of adhesive may enable more useful results to be obtained.

Examine and prepare the sample for testing, as described in ISO Dimensions in millimetres Key 1 Test assembly aligned for adhesion process see 5. The substrate panels shall be plane and free from distortion.

The chosen pretreatment shall be reported in the test report. Before testing, condition the coated panels at and a relative humidity of see ISO , unless otherwise agreed, for a minimum period of 16 hours.

Determine the thickness, in micrometres, of the dried coating by one of the procedures specified in ISO NOTE See also clause 1.

Use the minimum quantity of adhesive required to produce a firm, continuous and even bond between the components of the test assembly. These test methods have been found useful in comparing the adhesion behaviour of different coatings. It is most useful in providing relative ratings for a series of coated panels exhibiting significant differences in adhesion. The test may be applied using a wide range of substrates. Different procedures are given according to whether the substrate is deformable, for example thin metal, plastics and wood, or rigid, for example thick concrete and metal plates.

For special purposes, the coating may be applied directly to the face of a test dolly. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.

After curing of the adhesive, the bonded dolly assemblies are placed in a suitable tensile tester. The test result is the tensile stress necessary to break the weakest interface adhesive failure or the weakest component cohesive failure of the test assembly.

Revision of ISO The items of supplementary information are given in annex A. The tensile stress shall be applied in a direction perpendicular to the plane of the coated substrate and shall be increased at a substantially uniform rate, not greater than 2 , such that failure of the test assembly occurs within.

Suitable designs for applying the tensile stress are shown in Figures 1 and 2. NOTE 1 Instead of a tensile tester, other types of pull-off adhesion testers mechanically, pneumatically, hydraulically or hand- driven may be used provided that they give similar results. NOTE 2 The results can be influenced by the test assembly used.

Furthermore, the results are not reproducible unless coaxial alignment of the tensile forces is ensured. Each dolly has a nominal diameter of see however following paragraph and sufficient thickness to ensure freedom from distortion during the test. It is recommended that the length of each dolly is not less than half its diameter. The faces of each dolly shall be machined perpendicular to its axis before use.

Dollies with a diameter of may be used when the method for testing adhesion from one side only is used see 9. If dollies of in diameter are used, 10 measurements shall be made to improve the precision. The diameter of the dollies shall be reported in the test report. A suitable design is shown in Figure 3. Depending on the mechanical properties of the paint system e. It is permitted, if specified or agreed between the interested parties, not to cut when the paint systems are less than in layer thickness.

If cuts around the dolly have been made, this shall be mentioned in the test report and the type of cutting tool also mentioned.

Key 1 Coating 2 Test piece 3 Dolly 4 Ball-and-socket sliding joint 5 Support suitably designed to allow for joint assembly 6 Ball-and-socket sliding joint Figure 2 — Example of a suitable test apparatus for the method described in 9.

To produce failure of the coating, it is essential that the cohesive and bonding properties of the adhesive are greater than those of the coating under test.

Preliminary screening of adhesives shall be carried out in order to determine their suitability for use. Suitable adhesives and, if applicable, their unmixed components shall cause little or no visible change in the coating under test when left in contact with the coating for a period equivalent to the curing time of the adhesive. Adhesives which give the highest results, which means the most coating-substrate adhesive failure, are preferred. In most cases, cyanoacrylate, two-component solventless epoxide and peroxide-catalysed polyester adhesives have been found suitable.

In special tests under highly humid conditions, the curing time of the adhesive shall be as short as possible. The use of two-pack quick-drying epoxy adhesive is preferable in these situations.

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NOTE Where failure is mainly associated with the adhesive, the use of another type of adhesive may enable more useful results to be obtained. Examine and prepare the sample for testing, as described in ISO Dimensions in millimetres Key 1 Test assembly aligned for adhesion process see 5.

The substrate panels shall be plane and free from distortion. The chosen pretreatment shall be reported in the test report. Before testing, condition the coated panels at and a relative humidity of see ISO , unless otherwise agreed, for a minimum period of 16 hours.

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