Kemesta
Toimialayhteisö:
Kemesta
Komitea: ISO/TC 6/SC 2
(Test methods and quality specifications for paper and board)
Alkuperä: ISO
Määräpäivä: 2024-03-19
This document specifies a method for the determination of the wet strength of paper and board by measuring its bursting strength after it has been immersed in water for a specified period. The method is applicable to most kinds of paper and board, provided that an appropriate immersion time is agreed between the interested parties. Different results can be found if the sample is re-tested after a period of time.
Toimialayhteisö:
Kemesta
Komitea: ISO/TC 61/SC 5
(Physical-chemical properties)
Alkuperä: ISO
Määräpäivä: 2024-03-19
This document defines the general conditions for the determination of the reduced viscosity, intrinsic viscosity and K-value of organic polymers in dilute solution. It defines the standard parameters that are applied to viscosity measurement. This document is used to develop standards for measuring the viscosities in solution of individual types of polymer. It is also used to measure and report the viscosities of polymers in solution for which no separate standards exist.
This document defines the general conditions for the determination of the reduced viscosity, intrinsic viscosity and K-value of organic polymers in dilute solution. It defines the standard parameters that are applied to viscosity measurement.
This document is used to develop standards for measuring the viscosities in solution of individual types of polymer. It is also used to measure and report the viscosities of polymers in solution for which no separate standards exist.
Toimialayhteisö:
Kemesta
Komitea: ISO/TC 6/SC 2
(Test methods and quality specifications for paper and board)
Alkuperä: ISO
Määräpäivä: 2024-03-22
This document specifies a method for the determination of the water absorption of paper and board after total immersion in water for a specified time. The method is applicable to all types of paper and board which have a degree of water resistance. It is not applicable to very absorbent papers such as tissue papers and tissue products.
Toimialayhteisö:
Kemesta
Komitea: ISO/TC 61/SC 5
(Physical-chemical properties)
Alkuperä: ISO
Määräpäivä: 2024-03-25
This document specifies the general principles of a method for determining the dynamic rheological properties of polymer melts at angular frequencies typically in the range of 0,01 rad·s-1 to 100 rad·s-1 by means of an oscillatory rheometer with a parallel-plate or a cone-and-plate geometry. Angular frequencies outside this range can also be used (see Note 1). The method is applicable to determine values of the following dynamic rheological properties: complex shear viscosity ?*, dynamic shear viscosity ?', the out-of-phase component of the complex shear viscosity ?”, complex shear modulus G*, shear loss modulus G”, shear storage modulus G', phase angle d, and loss factor tand. It is suitable for measuring complex shear viscosity values typically up to ~10 MPa·s (see Note 2).
Toimialayhteisö:
Kemesta
Komitea: ISO/TC 61/SC 5
(Physical-chemical properties)
Alkuperä: ISO
Määräpäivä: 2024-03-26
This document specifies methods for the determination of components in plastics that can be extracted by hot organic liquids near their boiling points. For one special case, a so-called cold-extraction method is given in Annex B. The extractable components can be monomers, oligomers, polymers, plasticizers, stabilizers, etc. The kind and percentage of extractable matter influence the properties of plastics. The recommended extraction liquid depends on the type of plastic and on the purpose of the determination (see Table 1). The extracted amounts of special constituents are often not quantitative in the sense of analytical chemistry. This document does not apply to plastics that come into contact with food or drinking water. Special regulations for those plastics are established in many countries. In order to test plastics for compliance with these regulations, methods other than those given in this document are used in most cases. The methods of this document are not intended to be used for migration tests. If this document is used to test plastics other than those mentioned in Table 1, the operating conditions are intended to be agreed upon by the interested parties.
ISO 6427:2013 specifies methods for the determination of components in plastics that can be extracted by hot organic liquids near their boiling points. For one special case, a so-called cold-extraction method is given.
The extractable components can be monomers, oligomers, polymers, plasticizers, stabilizers, etc. The kind and percentage of extractable matter influence the properties of plastics.
The recommended extraction liquid depends on the type of plastic and on the purpose of the determination. The extracted amounts of special constituents are often not quantitative in the sense of analytical chemistry.
To be completed with ISO 23698
Toimialayhteisö:
Kemesta
Komitea: ISO/TC 61/SC 4
(Burning behaviour)
Alkuperä: ISO
Määräpäivä: 2024-03-31
Toimialayhteisö:
Kemesta
Komitea: ISO/TC 58/SC 3
(Cylinder design)
Alkuperä: ISO
Määräpäivä: 2024-04-01
Toimialayhteisö:
Kemesta
Komitea: ISO/TC 61/SC 5
(Physical-chemical properties)
Alkuperä: ISO
Määräpäivä: 2024-04-02
This document specifies three methods for the determination of the density of non-cellular plastics in the form of void-free moulded or extruded objects, as well as powders, flakes and granules.
Toimialayhteisö:
Kemesta
Komitea: ISO/TC 45/SC 1
(Rubber and plastics hoses and hose assemblies)
Alkuperä: ISO
Määräpäivä: 2024-04-02
This document specifies requirements for five types of compact, wire-braid-reinforced hoses and hose assemblies of nominal size from 5 to 76. They are suitable for use with This document does not include requirements for end fittings. It is limited to requirements for hoses and hose assemblies.
Toimialayhteisö:
Kemesta
Komitea: ISO/TC 61/SC 5
(Physical-chemical properties)
Alkuperä: ISO
Määräpäivä: 2024-04-03
This document describes procedures for determining the specific volume of plastics as a function of temperature and pressure in both the molten and solid states. This document specifies the use of a piston-equipped apparatus in which the test sample, held in a measurement cell, is pressurized by means of the piston. Measurements under conditions of constant pressure or constant temperature can be made. For the acquisition of data needed for processing design the isobaric cooling method is found to be more useful, see ISO 17282. The result of this measurement cannot be used directly for injection-moulding simulation. This document is applicable to obtain:
Toimialayhteisö:
Kemesta
Komitea: ISO/TC 61/SC 5
(Physical-chemical properties)
Alkuperä: ISO
Määräpäivä: 2024-04-04
This document specifies a method for the determination of the temperatures and enthalpies of melting and crystallization of crystalline or partially crystalline plastics using conventional DSC as specified in ISO 11357-1. This document is not applicable to fast DSC as specified in ISO 23976.
ISO 11357-3:2018 specifies a method for the determination of the temperatures and enthalpies of melting and crystallization of crystalline or partially crystalline plastics.
Toimialayhteisö:
Kemesta
Komitea: CEN/TC 23
(Transportable gas cylinders)
Alkuperä: CEN
Määräpäivä: 2024-04-04
This document specifies three methods for the determination of the density of non-cellular plastics in the form of void-free moulded or extruded objects, as well as powders, flakes and granules.
— Method A: Immersion method, for solid plastics (except for powders) in void-free form.
— Method B: Liquid pycnometer method, for particles, powders, flakes, granules or small pieces of finished parts.
— Method C: Titration method, for plastics in any void-free form.
NOTE Density is frequently used to follow variations in physical structure or composition of plastic materials. Density can also be useful in assessing the uniformity of samples or specimens. Often, the density of plastic materials depend upon the choice of specimen preparation method. When this is the case, precise details of the specimen preparation method are intended to be included in the appropriate material specification. This note is applicable to all three methods.
Toimialayhteisö:
Kemesta
Komitea: ISO/TC 61/SC 5
(Physical-chemical properties)
Alkuperä: ISO
Määräpäivä: 2024-04-08
This document specifies three methods for the determination of the ash of poly(vinyl chloride). The general procedures given in ISO 3451-1 are followed. For ash, method A is used. For sulfated ash, methods B and C are used. All three methods are applicable to resins, compounds and finished products. Methods B and C are applicable when lead-containing compounds are present.
Toimialayhteisö:
Kemesta
Komitea: ISO/TC 61/SC 5
(Physical-chemical properties)
Alkuperä: ISO
Määräpäivä: 2024-04-10
This document specifies methods for the determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) of polymeric materials by means of differential scanning calorimetry (DSC). It is applicable to polyolefin resins that are in a fully stabilized or compounded form, either as raw materials or finished products. It can be applicable to other plastics.