UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close
Already an Engineering360 user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

ISO 22007-2

Plastics - Determination of thermal conductivity and thermal diffusivity - Part 2: Transient plane heat source (hot disc) method

active, Most Current
Buy Now
Organization: ISO
Publication Date: 1 August 2015
Status: active
Page Count: 28
ICS Code (Plastics in general): 83.080.01
scope:

This part of ISO 22007 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 is suitable 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 3.2 below).

The method is suitable for materials having values of thermal conductivity, λ, in the approximate range 0,010 W⋅m−1⋅K−1 < λ < 500 W⋅m−1⋅K−1, values of thermal diffusivity, α, in the range 5 × 10−8 m2⋅s−1 < α < 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, can be obtained by dividing the thermal conductivity, λ, by the thermal diffusivity, α, i.e. C = λ/α, 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.

Document History

ISO 22007-2
August 1, 2015
Plastics - Determination of thermal conductivity and thermal diffusivity - Part 2: Transient plane heat source (hot disc) method
This part of ISO 22007 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...
December 15, 2008
Plastics — Determination of thermal conductivity and thermal diffusivity — Part 2: Transient plane heat source (hot disc) method
This part of ISO 22007 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...

References

Advertisement