Volumetric heat capacity of insulation material

The values for the specific isobaric volumetric heat capacity of insulation material per K at 20°C are taken from standard IEC 60853-2 Ed.1.0 where available with the following additions:

Semi-conducting screening materials are assumed to have the same properties as the insulation.
Values for Polypropylene (PP) and Silicone rubber (SiR) are taken from professionalplastics.com
Value for PP laminated paper (PPLP) is assumed to be slightly higher than for paper insulation because the value for oil is given with 1.7 whereas the value for polypropylene lies between 1.7 and 1.9.
Value for Ethylene vinyl acetate (EVA) is defined as 2200 J/kg.K * 0.955 kg/m3 acc. plasticfantasticlibrary.com

Symbol

$\sigma_i$

Unit

J/(K.m$^3$)

Related

$M_i$

Material of insulation

Used in

$Q_{ct}$

Thermal capacitance of conductor (IEC 60853) [J/(m.K)]

$Q_i$

Thermal capacitance of insulation [J/(m.K)]

$Q_{it}$

Thermal capacitance of insulation (IEC 60853) [J/(m.K)]

$Q_{it1}$

Thermal capacitance of insulation, 1st portion (IEC 60853) [J/(m.K)]

$Q_{it2}$

Thermal capacitance of insulation, 2nd portion (IEC 60853) [J/(m.K)]

Choices

Material	Value
PE	2400000.0
HDPE	2400000.0
XLPE	2400000.0
XLPEf	2400000.0
PVC	1700000.0
EPR	2000000.0
IIR	2000000.0
PPLP	2000000.0
Mass	2000000.0
OilP	2000000.0
PP	1800000.0
SiR	1400000.0
EVA	2100000.0
XHF	1320000.0