Disadvantages
The disadvantages of TPEs relative to conventional rubber or thermoset are relatively high cost of raw materials, general inability to load TPEs with low cost fillers, such as carbon black (therefore preventing TPEs from being used in automobile tires), poor chemical and heat resistance, high compression set and low thermal stability. TPEs soften or melt at elevated temperature above which they lose their rubbery behaviour. TPEs show creep behaviour on extended use.
Read more about this topic: Thermoplastic Elastomer