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. 2021 May 13;13(10):1565. doi: 10.3390/polym13101565

Table 1.

Types, properties and molecular structures of some important rubbers [93,94,95,96,97,98].

Rubber Properties Molecular Structure
NR Biocompatibility; high elasticity, tear and abrasion resistance; high resilience, damping behavior and tensile strength; good oxidation resistance; low compression set; low ozone resistance; poor chemical resistance and processing ability graphic file with name polymers-13-01565-i001.jpg
EPDM High chemical stability; high tear, impact and abrasion resistance; high heat-aging (100 °C), weather, ozone and oxidation resistance; high resistance to break down graphic file with name polymers-13-01565-i002.jpg
CR Self-extinguishing behavior; good chemical stability; maintains flexibility over a wide temperature range graphic file with name polymers-13-01565-i003.jpg
SBR Good heat aging (100 °C); high elongation; good resistance to diluted and concentrated alkalis, alcohols and solvents graphic file with name polymers-13-01565-i004.jpg
EVA Low-temperature toughness; stress-crack resistance; hot-melt adhesive; waterproof properties; resistance to UV radiation graphic file with name polymers-13-01565-i005.jpg
NBR Resistance to nonpolar oils, silicon oils, fuels and ordinary diluted acids and alkalis; good oxidation resistance; good heat aging (100 °C); high thermal stability graphic file with name polymers-13-01565-i006.jpg
IIR High resistance to heat, oxygen and ozone; low gas and moisture permeability; poor resilience graphic file with name polymers-13-01565-i007.jpg
PU Good abrasion resistance, tensile strength, tear strength, hardness, compression strength, impact resistance and elongation; high moisture sensitivity graphic file with name polymers-13-01565-i008.jpg
CPE High resistance to ozone, hydrocarbon oil, heat and weathering; good blending ability with both polar and nonpolar materials graphic file with name polymers-13-01565-i009.jpg
SR Biocompatibility; high thermal and UV radiation stability; high elongation, elasticity and tensile modulus; good heat aging (100 °C) and compression set rating; adhesion to metals; good ozone, oxidation and weathering resistance; low resistance to alkaline solvents; good dielectric properties graphic file with name polymers-13-01565-i010.jpg