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  • BSI
    BS EN ISO 22007-2:2022 Plastics. Determination of thermal conductivity and thermal diffusivity - Transient plane heat source (hot disc) method
    Edition: 2022
    $422.27
    / user per year

Description of BS EN ISO 22007-2:2022 2022

This document specifies a method for the determination of the thermal conductivity and thermal diffusivity, and hence the specific heat capacity per unit volume of plastics. The experimental arrangement can be designed to match different specimen sizes. Measurements can be made in gaseous and vacuum environments at a range of temperatures and pressures. This method gives guidelines for testing homogeneous and isotropic materials, as well as anisotropic materials with a uniaxial structure. The homogeneity of the material extends throughout the specimen and no thermal barriers (except those next to the probe) are present within a range defined by the probing depth(s) (see 3.1). The method is suitable for materials having values of thermal conductivity, ?, in the approximate range 0,010 W?m?1?K?1 < ? < 500 W?m?1?K?1, values of thermal diffusivity, ?, in the range 5 × 10?8 m2?s?1 < ? < 10?4 m2?s?1, and for temperatures, T, in the approximate range 50 K < T < 1 000 K. NOTE 1   The specific heat capacity per unit volume, C, C = ? ? cp, where ? is the density and cp is the specific heat per unit mass and at constant pressure, can be obtained by dividing the thermal conductivity, ?, by the thermal diffusivity, ?, i.e. C = ?/?, and is in the approximate range 0,005 MJ?m?3?K?1 < C < 5 MJ?m?3?K?1. It is also referred to as the volumetric heat capacity. NOTE 2   If the intention is to determine the thermal resistance or the apparent thermal conductivity in the through-thickness direction of an inhomogeneous product (for instance a fabricated panel) or an inhomogeneous slab of a material, reference is made to ISO 8301, ISO 8302 and ISO 472. The thermal-transport properties of liquids can also be determined, provided care is taken to minimize thermal convection.

Standard NumberBS EN ISO 22007-2:2022
TitlePlastics. Determination of thermal conductivity and thermal diffusivity - Transient plane heat source (hot disc) method
StatusDefinitive
Publication Date2022-08-08
ReplacesBS EN ISO 22007-2:2015
Identical National Standard OfISO 22007-2:2022, EN ISO 22007-2:2022
DescriptorsPlastics and rubber technology, Thermal conductivity, Thermal diffusivity, Thermal properties of materials, Plastics
ICS83.080.01 Plastics in general
CommitteePRI/21
ISBN978 0 539 15571 6
PublisherBSI
Pages30



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BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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