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This part of ISO 3233 specifies a method for determining the non-volatile matter by volume (NVv) of coating materials by determining the practical dry-film density. This method determines the volume percentage of non-volatile matter in paints, varnishes and related products by measuring the density of a dry coating for any specified temperature range and period of drying or curing.

Using the non-volatile matter by volume results obtained in accordance with this part of ISO 3233, it is possible to calculate the practical spreading rate of coating materials.

This method specifies an additional shape of plate to those described in ISO 3233-1 and is suitable for all products which can be applied by dipping.

This part of ISO 3233 is not applicable to coating materials which exceed the critical pigment volume concentration (CPVC).

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This document specifies a test method for the determination of non-volatile matter of coatings directly after application or after the intermediate or final drying. In practice, the determination of volatile matter is applied particularly in regard to water-thinnable coatings which are re-coated with an additional coating material.

When applying coatings the size or the size distribution of the generated drops is of great importance for the application result. By varying the application parameters, such as spraying energy and the rate of flow of the coating material as well as the technical properties such as solvent composition and rheological flow performance, the quality of the application result can be controlled. Also, climatic conditions during the application (e.g. temperature, relative humidity, and air falling speed) highly influence the result. By determining the non-volatile matter after the application or after the intermediate or final drying it is possible to characterize the wet or dry application result and, consequently, to indirectly refer to the generated drop size distribution and the solvent emission during the application. By means of the calculated volatile matter the sufficient intermediate drying of the respective coating is being determined before applying an additional coating. Furthermore, the method is appropriate to compare the efficiency of different application and drying methods.

NOTE The content of non-volatile or volatile matter of a product after application is no absolute variable but depends on the application and drying conditions applied during the test. Consequently, applying this method gives only relative values and not the real values for the content of non-volatile matter, due to solvent retention, thermal decomposition and evaporation of low-molecular contents.

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This part of ISO 1518 specifies a method for determining, using a pointed stylus loaded with a continuously increasing load, the scratch resistance of a single coating of a paint, varnish or related product, or the upper layer of a multicoat system.

This test has been found to be useful in comparing the scratch resistance of different coatings. It is most useful in providing relative ratings for a series of coated panels exhibiting significant differences in scratch resistance.

Neither this part of ISO 1518 nor ISO 1518-1 specifies a method using a curved stylus, which is specified in ISO 12137. The choice between the three methods will depend on the particular practical problem.

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This part of ISO 1518 specifies a test method for determining under defined conditions the resistance of a single coating or a multi-coat system of paint, varnish or related product to penetration by scratching with a scratch stylus loaded with a specified load. Penetration of the stylus is to the substrate, except in the case of a multi-coat system, in which case the stylus can penetrate either to the substrate or to an intermediate coat.

The method specified can be carried out

a) either as a "pass/fail" test, by testing with a single specified load applied to the stylus to assess compliance with a particular specification;

b) or as an assessment test by applying increasing loads to the stylus to determine the minimum load at which the coating is penetrated.

Neither this part of ISO 1518 nor ISO 1518-2 specifies a method using a curved stylus, which is specified in ISO 12137. The choice between the three methods will depend on the particular practical problem.

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1.1 This document specifies a method for determining the flow time of paints, varnishes and related products that can be used to control consistency.

1.2 Four flow cups of similar dimensions, but having orifice diameters of 3 mm, 4 mm, 5 mm and 6 mm, are specified. Two methods for checking the flow cups for wear and tear are given (see Annex A).

Flow cups with a replaceable jet are not covered by this International Standard as the close tolerances on the supply of the material under test to the jet are not met.

Commonly used dipping flow cups are also not covered by this International Standard. In general, the fabrication tolerances for such flow cups are greater than those of the flow cups specified in this International Standard. Therefore flow time determinations with dipping flow cups give a precision which is lower than that obtained with the flow cups specified in this International Standard (see Clause 9).

1.3 The method is limited to testing materials for which the breakpoint of the flow from the orifice of the flow cup can be determined with certainty. This point is difficult to determine and reproduce for materials with flow times near the upper limit of the measurement range (100 s) due to slowing-down effects.

1.4 Flow times are reproducible only for products of Newtonian or near-Newtonian flow properties. This effectively limits their practical use. Nevertheless, for checking purposes, these flow cups do serve a useful purpose. Furthermore, the measurement of flow time is often used to confirm the application consistency.

Paints often contain flow-arresting agents to confer increased viscosity. Such paints exhibit non-Newtonian flow properties. Their viscosity during application can only be properly assessed using viscometers such as that described in ISO 3219.

Resins and varnishes can exhibit Newtonian or near-Newtonian flow at much higher viscosities than most paints and, where this applies, flow cups can provide a useful means of controlling the consistency. To meet this requirement, this International Standard provides flow cups suitable for viscosities up to about 700 mm2/s.

With thixotropic materials, stirring or other such mechanical disturbance immediately before testing will reduce the flow time compared with that for an unstirred sample. With such materials, uncertain and variable flow time values are obtained with all the flow cups. The repeatability and reproducibility limits given in Clause 9 cannot be achieved in the determination of the flow time of such materials.

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This document specifies a method for determining the resistance of a coating to scratches introduced by a usually hand-held loaded stylus.

The test can be carried out using a point stylus (method A) or using a disc stylus (method B).

Both methods are generally applicable and can be used in the field as well as on curved surfaces. Method A can also be applied on small test specimens (minimum dimensions 30 mm × 50 mm).

The test can be carried out as "pass/fail" test (test requirement I) or as classification test (test requirement II).

The application purposes of the styluses are given in Table 1.

Table 1 — Application purposes of the styluses

Stylus type

Stylus material

Application requirement

Point stylus

Tungsten carbide

Mar resistance

Disc stylus

Stainless steel

Copper

Resistance to metal marking

Thermoset

Resistance to writing effects ("gash resistance")

PMMAa

Resistance to writing effects ("fingernail test")

a polymethyl methacrylate

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This document specifies a method for the gas-chromatographic determination of the solvents in water-thinnable paints and varnishes, binder solutions, emulsions and dispersions.

With the precision stated in Clause 13, single components above 0,02 % (by mass) can be determined quantitatively.

The method defined in this standard is not applicable for determination of volatile organic compounds (VOC) and semi-volatile organic compounds (SVOC) content.

NOTE For determination of VOC and SVOC, see ISO 11890-2.[1]

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The standard series ISO 22553 applies to electro-deposition coatings for automotive industries and other general industrial applications, e.g. chiller units, consumer products, radiators, aerospace, agriculture, etc.

This document specifies the terminology and explains the general principles.

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The standard series ISO 22553 applies to electro-deposition coatings for automomotive industries and other general industrial applications, e.g. chiller units, consumer products, radiators, aerospace, agriculture, etc.

This document specifies two methods for the determination of the throwing power of electro-deposition coating materials.

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The standard series ISO 22553 applies to electro-deposition coatings for automomotive industries and other general industrial applications, e.g. chiller units, consumer products, radiators, aerospace, agriculture, etc.

This document specifies a method for the determination of the compatibility of electro-deposition coating materials with a reference oil.

Test methods for the determination of the compatibility of electro-deposition coating materials with liquid, paste-like and solid foreign substances, which influence the properties of the electro-deposition coating, are described in other parts of this standard series.

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The standard series ISO 22553 applies to electro-deposition coatings for automomotive industries and other general industrial applications, e.g. chiller units, consumer products, radiators, aerospace, agriculture, etc.

This document specifies three different methods of electro-deposition coating material contamination with liquid, paste-like and solid foreign materials.

Test methods for determining the compatibility of electro-deposition coating materials with a reference oil, which influences the properties of the electro-deposition coating, are described in ISO 22553-3.

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The standard series ISO 22553 applies to electro-deposition coatings for automomotive industries and other general industrial applications, e.g. chiller units, consumer products, radiators, aerospace, agriculture, etc.

This document specifies a method for the determination of soiling material e. g. from previous processes, non-dispersed paint particles and other foreign material in the electro-deposition coating material.

In practice, increased sieve residue may have different causes, such as metal particles, which are introduced together with the object to be coated, or clots.

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The standard series ISO 22553 applies to electro-deposition coatings for automomotive industries and other general industrial applications, e.g. chiller units, consumer products, radiators, aerospace, agriculture, etc.

This document specifies a method for identifying entry marks, which may occur during electro-deposition coating.

These entry marks can often occur in the form of streaks when the workpiece, either set as cathode or anode, is immersed in the electro-deposition tank under applied electric potential (relation of voltage and current). These marks occur parallel to the bath surface on the objects to be coated.

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This document describes methods of scribing coated steel or test-pieces for corrosion tests, where the coating system is applied at dry film thicknesses of less than 500 μm. It is intended as a guideline only, being based on the results of a collaborative trial with no subsequent corrosion testing having been carried out to determine the suitability of the introduced scribe marks for such tests.

This document covers the scribing of metallic panels or test pieces (chemically treated or not) made from:

— steel,

— galvanized steel,

— aluminium alloys,

— magnesium alloys.

It does not cover the scribing of electroplated metal or clad aluminium panels.

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This document (ISO 6504-3) specifies methods for determining the hiding power given by paint coats of white or light colours of tristimulus values Y and Y10 greater than 25, applied to a black and white chart, or to a colourless transparent foil. In the latter case the tristimulus values Y and Y10 are measured over black and white panels. Subsequently, the hiding power is calculated from these tristimulus values.

This document specifies also a simple method for calculating the spreading rate for paints with a volatile matter content with low evaporation speed, e.g. coatings for interior walls and ceilings as specified in EN 13300.