Normy

Obsah

ČSN EN ISO 787-17 This document specifies a general method of test for comparing the lightening (reducing) power of a white pigment with the lightening power of an agreed sample of the same type. Two procedures (A and B) are specified. Procedure A is quicker than procedure B and is suitable for testing one sample of pigment; procedure B is better for testing several samples, and especially if a pigment of unknown lightening power is being tested.

Obsah

ČSN EN ISO 8130-1 This document specifies a method for the determination of the particle size distribution of coating powders by sieve analysis. Particle size distributions with a maximum of less than 100 µm is determined by laser diffraction, ISO 8130-13. This method is used especially for determining the oversize material or for the presence of contamination and can be used as a quality control procedure ("go"/"no go" test) by checking the amount retained on a single sieve. The following particle sizes are typical for coating powders, however the particle size can deviate depending on the application: - thin-film technology: 1 µm to 63 µm; - electrostatic coating: 10 µm to 200 µm; - fluidizing-bed method: 100 µm and above. NOTE: Sieves with a mesh size smaller than 32 µm are not practical and are likely to become blind during use.

Obsah

ČSN EN ISO 8130-11 This document specifies a comparative method for determining the flow characteristic of a fused thermosetting coating powder down a plane inclined at a set angle to the horizontal. The aim of the test method described in this document gives an indication of the degree of melt flow that can occur during the curing of the coating powder. This characteristic contributes to the surface appearance and to the degree of coverage over sharp edges. The test is a comparative method for checking for batch to batch variation in the behaviour of a given coating powder. Correlation between the results from coating powders of differing composition is not to be expected. This method is not suitable for coating powders which have gel times of less than 1 min at the test temperature when characterised according to ISO 8130-6. This method is also not suitable for textured powders.

Obsah

ČSN EN ISO 8130-12 This document specifies a visual method to determine the deterioration of surface quality of the final coating when mixing two different coating powders. The surface quality will depend on the following characteristics of the coating powders: a) the chemical reactivity; b) the chemical composition; c) the melt properties. The onset of the incompatibility in appearance, its nature and its extent will depend greatly on the ratio in which the powders are mixed. The nature of the incompatibility in surface appearance can manifest itself in various ways, described in Clause 8. This test is useful in predicting the possibility of incompatibility arising from mixing different powders both during the manufacturing process and during the application of the coating powder. This document concerns only changes in visual aspects of the coating. The mixture series can also be used for testing properties such as mechanical properties, chemical properties, corrosive properties and resistance against UV radiation. Further properties can be agreed between interested parties.

Obsah

ČSN EN ISO 8130-13 This document specifies a method for the determination of the equivalent-sphere particle size distribution of coating powders by laser diffraction, for particles of the size range from 1 µm to 300 µm. NOTE: There is a possibility that particle sizes >300 µm need the use of a different optical model. This document is specific for the measurement of coating powders and also draws attention to ISO 13320, which provides guidance on instrument qualification and particle size distribution. Laser diffraction is not suitable for determining oversize material, which can be verified by sieve analysis as described in ISO 8130-1 or by dynamic image analysis as described in ISO 13322-2.

Obsah

ČSN EN ISO 8130-7 This document specifies a method for the determination of loss of mass on stoving of coating powders that are to be applied by electrostatic spraying or flock spraying or fluidized bed. The method described in this document is a simple, practical test which provides sufficiently accurate results for coating powders that lose approximately 2 % (by mass) on stoving (heating). Above 2 %, accuracy decreases with an increasing loss in mass. This method determines the amount of all volatile matter, including water. Thermogravimetric testing as described in the ISO 11358 series can be used as a comparative method.

Obsah

ČSN ISO 4323 This document specifies a potentiometric method for the determination of the chloride content of soaps, containing or not containing other surface active agents, and also of compounded products.

Obsah

ČSN 73 0043 Tato norma ČSN 73 0043 podrobněji vysvětluje vybrané články ČSN ISO 13823 a uvádí doplňující pokyny pro ověřování nových i existujících konstrukcí na trvanlivost při působení nepříznivých vlivů prostředí. Tato norma se používá společně s ČSN ISO 13823 Tato norma ČSN 73 0043 platí pro ověřování nových i existujících konstrukcí s ohledem na trvanlivost. Uvádí doplňující definice, zatížení a postupy pro ověřování konstrukcí, výpočetní modely a podrobněji vysvětluje vybrané články ČSN ISO 13823. V příloze A je uveden příklad modelu pro stanovení karbonatace betonu. V příloze A je také uveden vybraný příklad ověřování konstrukce s ohledem na trvanlivost. Příloha B uvádí příklady kritérií pro hodnocení životnosti rozsáhlých konstrukcí. Příloha C poskytuje zásady pro zajištění životnosti památkově chráněných objektů. Norma ČSN 73 0043 se používá společně s ČSN ISO 13823. Zásady navrhování a ověřování konstrukcí s ohledem na trvanlivost jsou uvedeny v ČSN EN 1990, konstrukční opatření v materiálově zaměřených Eurokódech. V ČSN ISO 13823 a ČSN 73 0043 jsou uvedeny doplňující pokyny pro ověřování konstrukcí na trvanlivost při působení nepříznivých vlivů prostředí, které v Eurokódech nejsou podrobněji uvedeny. Pro ověřování existujících konstrukcí s ohledem na mezní stavy únosnosti a použitelnosti se postupuje podle ČSN ISO 13822 a podle ČSN 73 0038

Obsah

ČSN EN ISO 1833-21 This document specifies a method, using cyclohexanone, to determine the mass percentage of chlorofibre, modacrylic, elastane, acetate and triacetate, after removal of non-fibrous matter, in textiles made of mixtures of - acetate, triacetate, chlorofibre, certain modacrylics, certain elastanes with - wool, animal hair, silk, cotton, cupro, modal, viscose, lyocell, polyamide, acrylic, melamine, polyacrylate and glass fibres. It is also possible to analyse mixtures containing chlorofibres by using the test methods described in ISO 1833-13 or ISO 1833-17.

Obsah

ČSN EN ISO 1833-10 This document specifies a method, using dichloromethane, to determine the mass percentage of triacetate or polylactide, after removal of non-fibrous matter, in textiles made of mixtures of - triacetate or polylactide with - wool or other animal hair, silk, protein, cotton, viscose, cupro, modal,lyocell, polyamide, polyester, acrylic, elastomultiester, polypropylene, elastolefin, melamine, polypropylene/polyamide bicomponent,polyacrylate and glass fibres. Triacetate fibres which have been partially hydrolysed (i.e. saponification) cease to be completely soluble in the reagent. In such cases, this method is not applicable.

Obsah

ČSN EN 16711-3 This document describes a testing procedure to determine the rate of lead release from all materials of textile articles. NOTE - With this test procedure it can be demonstrated that the rate of lead release from such an article or any accessible part of an article, whether coated or uncoated, does or does not exceed 0,05 µg/cm2 per hour, and, for coated articles, that the coating is sufficient to ensure that this release rate is not exceeded for a period of at least two years of normal or reasonably foreseeable conditions of use of the article (Annex XVII of Regulation (EC) No 1907/2006, column 2 of entry 63 paragraph 7, second clause).

Obsah

ČSN EN ISO 3175-4 Tato část normy specifikuje postupy imitovaného profesionálního čištění za mokra při použití referenčního stroje pro plošné textilie a oděvy. Je určena pro plošné textilie a oděvy, které nelze prát a které vyžadují profesionální konečnou úpravu. Obsahuje normální proces pro normální materiály, mírný proces pro citlivé materiály a velmi mírný proces pro velmi citlivé materiály. Předmětem této normy není lokální tvoření skvrn a jejich odstraňování.