This part of GB/T 1033 specifies a method for the determination of the density or the specific volume of solid non-cellular plastics of any shape which do not contain closed pores.
2 Terms and Definitions
For the purposes of this part of GB/T 1033, the following terms and definitions apply.
2.1
test material
material to be tested
2.2
test specimen
that part of the test material actually subjected to the test
2.3
mass
m
quantity of matter contained in a body, expressed in kilograms (kg) or grams (g)
2.4
weight
w
force produced by gravity acting on a mass, expressed in newtons (N)
Note: Since gravity varies with location, so does weight.
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2.5
apparent mass
mapp
mass of a body obtained by measuring its weight using an appropriately calibrated balance, expressed in kilograms (kg) or grams (g)
2.6
volume
V
size of a body in three-dimensional space, excluding pores, expressed in cubic metres (m3 ), litres (L), cubic centimetres (cm3) or millilitres (mL)
Note: Due to thermal expansion, volume varies with temperature t.
2.7
density
ρ
mass per unit volume of a material at a given temperature t, expressed in kilograms per cubic metre (kg/m3), kilograms per cubic decimetre (kg/dm3), grams per cubic centimetre (g/cm3), kilograms per litre (kg/L) or grams per millilitre (g/mL)
Note: Density is calculated using the Equation (1) at constant t:
