Table 4: Physical-mechanical characteristics for the selected polymer composites.

Reference number CharacteristicsUMThe uncertainties
of tests
Value

[1]Properties after accelerated ageing 70°C 168h
Hardness, °ShA, °ShA±0.0575
Elasticity, %,%9
100% modulus, N/mm2N/mm24,9
Tensile strength, N/mm2N/mm2±0.649,5
Elongation at break, %%±2.95333
Residual elongation, %%20
Tear strength, N/mmN/mm52,5

[2] Ross Flex flexions at 23°C (no. of cycles) ±300
(i) la −20°CFlexions216000
(ii) la +23°CFlexions>150000

[3] Determination of resistance to liquids ±0.04
Water 20°C, 22 h
(i) Change in mass %0
(ii) Change in volume%−0,8
Water 70°C, 22 h
(i) Change in mass%−1,04
(ii) Change in volume%−0,61
Sulfuric acid (H2SO4) 70%
(i) Change in mass%0,29
(ii) Change in volume%−0,55
Nitric acid (HNO3) 50%
(i) Change in mass%4,7
(ii) Change in volume%2,8
Caustic soda (NaOH) 50%
(i) Change in mass %0,24
(ii) Change in volume%−0,21
Sun flower oil
(i) Change in mass %−0,3
(ii) Change in volume%−0,56
Soya oil
(i) Change in mass%0,82
(ii) Change in volume%1,23
Animal fat
(i) Change in mass %0,65
(ii) Change in volume %1,16
Toluene
(i) Change in mass %64,6
(ii) Change in volume%94,6
Isooctane
(i) Change in mass %0
(ii) Change in volume %1,12
70% isooctane and 30% toluene solution
(i) Change in mass %12,8
(ii) Change in volume%22