Normy

Obsah

ČSN EN ISO 24026-2 1.1 This document specifies the methods of preparation of test specimens and the test methods to be used in determining the properties of poly(methyl methacrylate) (PMMA) moulding and extrusion materials. It gives the requirements for handling test material and for conditioning both the test material before moulding and the specimens before testing. 1.2 This document specifies procedures and conditions for the preparation of test specimens and procedures for measuring properties of the materials from which these specimens are made. It lists properties and test methods which are suitable and necessary to characterize poly(methyl methacrylate) moulding and extrusion materials. 1.3 The properties have been selected from the general test methods in ISO 10350-1. Other test methods in wide use for, or of particular significance to, these moulding and extrusion materials are also included in this document, as are the designatory properties specified in ISO 24026-1.

Obsah

ČSN EN ISO 24026-1 This document establishes a system of designation for poly(methyl methacrylate) (PMMA) thermoplastic material, which can be used as the basis for specifications. The types of PMMA plastic are differentiated from each other by a classification system based on appropriate levels of the designatory properties: a) Vicat softening temperature; b) melt mass-flow rate; c) viscosity number (optional); and on information about the intended application and/or method of processing, important properties, additives and colorants. This document is applicable to all poly(methyl methacrylate) homopolymers and to copolymers of methyl methacrylate (MMA) containing at least a mass percentage of 80 % of MMA and not more than a mass percentage of 20 % of acrylic esters or other monomers. This document applies to materials ready for normal use in the form of beads, granules and pellets and to materials unmodified or modified by colorants, additives, etc. It does not apply to PMMA modified with elastomers. It is not intended to imply that materials having the same designation give necessarily the same performance. This document does not provide engineering data, performance data or data on processing conditions which might be required to specify a material for a particular application and/or method of processing. If such additional properties are required, they are, if suitable, determined using the test methods specified in ISO 24026-2. In order to specify a thermoplastic material for a particular application or to ensure reproducible processing, additional requirements can be given in data block 5 (see 4.1).

Obsah

ČSN EN ISO 24025-2 1.1 This document specifies the methods of preparation of test specimens and the test methods to be used in determining the properties of sulfone polymer moulding and extrusion materials. Requirements for handling test material and for conditioning both the test material before moulding and the specimens before testing are given here. 1.2 Procedures and conditions for the preparation of test specimens and procedures for measuring properties of the materials from which these specimens are made are given. Properties and test methods which are suitable and necessary to characterize sulfone polymer moulding and extrusion materials are listed. 1.3 The properties have been selected from the general test methods in ISO 10350-1. Other test methods in wide use for, or of particular significance to, these moulding and extrusion materials are also included in this document, as are the designatory properties specified in ISO 24025-1.

Obsah

ČSN ISO 37100 (73 0960) Tento dokument definuje pojmy týkající se udržitelného rozvoje místních společenství, chytré (inteligentní) infrastruktury místních společenství a souvisejících témat.

Obsah

ČSN 73 6141 Tato norma souvisí a z hlediska národních požadavků upřesňuje a doplňuje podmínky stanovené v ČSN EN 13108-8 ed. 2, konkrétně specifikuje požadavky na postupy pro získávání, úpravu, homogenizaci, skladování, zkoušení a kontrolu R-materiálu určeného k použití jako složky - stavební materiál - pro výrobu asfaltových směsí za horka podle řady výrobkových norem ČSN EN 13108, normy ČSN 73 6121 a ČSN 73 6122 na obalovnách asfaltových směsí. R-materiál, který vzniká přetříděním a předrcením znovuzískané asfaltové směsi z existujících vozovek pozemních komunikací, dopravních a jiných ploch nebo jako produkt neshodné či nadbytečné výroby, je jedna ze složek asfaltových směsí obrusných, ložních a podkladních vrstev vozovek. Jedná se o cennou surovinu, kterou je potřeba využít v maximální možné míře. Tato norma se zabývá pouze R-materiálem s asfaltovými pojivy, jako je: silniční asfalt, polymerem modifikovaný asfalt, speciální polymerem modifikovaný asfalt, asfalt obsahující pryž, multigradový asfalt nebo tvrdý silniční asfalt. Asfaltová směs znovuzískaná z vozovky, která je kontaminovaná dehtem (nebo dalšími přísadami či složkami překračujícími stanovené maximální meze pro přípustné koncentrace nebezpečných látek podle příslušného předpisu1)) není v této normě řešena. Asfaltové směsi s obsahem R-materiálu jsou při splnění výrobních specifikací asfaltových směsí považovány za kvalitativně rovnocenné asfaltovým směsím bez obsahu R-materiálu.

Obsah

ČSN EN 1817 This document specifies the characteristics of homogeneous and heterogeneous smooth (including grained or embossed) rubber floor coverings, supplied in either tile or roll form. This document includes a classification system based on intensity of use, which shows where these resilient floor coverings should give satisfactory service (see EN ISO 10874). It also specifies requirements for marking.

Obsah

ČSN EN ISO 80000-8 Tento dokument uvádí názvy, značky, definice a jednotky pro veličiny užívané v akustice. Podle potřeby jsou rovněž uvedeni převodní činitelé.

Obsah

ČSN EN 17358 This document defines an additional data concept that may be transferred as 'optional additional data' part of an eCall MSD, as defined in EN 15722, that may be transferred from a vehicle to a PSAP in the event of a crash or emergency via an eCall communication session. The purpose of this document is simply to enable the existing MSD to house multiple OADs. This is achieved by providing a short optional additional data concept, which facilitates the inclusion of multiple additional datasets within the currently defined MSD of 140 bytes (every OAD still requires its own specification). This document can be seen as an addendum to EN 15722; it contains as little redundancy as possible. NOTE 1 - The communications media protocols and methods for the transmission of the eCall message are not specified in this document. NOTE 2 - Additional data concepts can also be transferred, and it is advised to register any such data concepts using a data registry as defined in EN ISO 24978 [1]. See www.esafetydata.com for an example.

Obsah

ČSN EN ISO 11844-2 Norma specifikuje metody stanovení korozních rychlostí standardních vzorků kovů ve vnitřních atmosférách s nízkou korozní agresivitou. Pro tento přímý způsob hodnocení korozní agresivity lze použít různé citlivé metody, které využívají standardní vzorky z těchto kovů: mědi, stříbra, zinku, oceli a olova. Hodnoty získané měřením se používají jako klasifikační kritéria pro stanovení korozní agresivity vnitřních atmosfér. Klasifikace nízké korozní agresivity vnitřních atmosfér, specifikace referenčních kovů používaných ke stanovení stupně korozní agresivity a významné parametry vnitřních atmosfér jsou uvedeny v ČSN EN ISO 11844-1. Měření parametrů prostředí ovlivňujících korozní agresivitu vnitřních atmosfér je uvedeno v ČSN EN ISO 11844-3.

Obsah

ČSN EN 17393 This document specifies the procedure for the determination of coating strength, and hence of cohesive strength in a tubular coating tensile test. The test is intended to determine the tensile coating strength parallel to the spray layers (normal to the spray direction) and to identify differences in particle cohesion quality, as caused by defects as internal delamination at cracks or oxides between the spray particles or splats. The tubular coating tensile test is suitable for sprayed coatings deposited using metallic materials (not carbides and ceramics). The tubular coating tensile test is not suitable for fused sprayed coatings deposited using self-fluxing alloys. The test supports quality assurance and is intended to be applied for the purpose of coating optimization by identifying the influences of coating parameters and spray materials on the coatings's quality. Furthermore, the coating in particular for cold sprayed coatings can be compared with the characteristics of similar solid materials and the coating's quality can be assessed. This test is not recommended for thin coatings (coating thickness < 500 µm), since massive scattering of results is to be expected here. Due to the size of the specimen, it is particularly suitable to apply the tubular coating tensile test for coating processes that use a concentrated spray jet and a highly focused spray spot, as in the case of cold spraying, high velocity flame spraying (HVOF) or plasma spraying. Applying the tubular coating tensile test for coating processes that use a broad spray jet, such as flame spraying and arc spraying, may require special spraying measures, e.g. the use of a template to ensure a nearly vertical impingement angle.

Obsah

ČSN EN 45553 This document contains a general method to assess the ability of energy-related products to be remanufactured. It is intended to be used by technical committees when producing horizontal, generic, and product, or product-group, standards. Assessing the ability of a part that is not considered to be an energy-related product to be remanufactured is not considered in this document. A scoring system to quantify the ability of an energy-related product to be remanufactured is not covered in this document. Only the criteria for the ability of an energy-related product to be remanufactured are presented in this document.

Obsah

ČSN EN ISO 294-3 This document specifies two two-cavity moulds, the type D11 and D12 ISO moulds, for the injection moulding of small plates measuring 60 mm x 60 mm with a preferred thickness of 1 mm (type D11) or 2 mm (type D12), which can be used for a variety of tests. The moulds can additionally be fitted with inserts for studying the effects of weld lines on the mechanical properties (see Annex A).