Tensile Strength Data from Selected EB-Irradiated Elastomers

Tensile Strength Data from Selected EB-Irradiated Elastomers 

Polymer Additive Amount of Additive, phr Dose, kGy Tensile Strength, MPa (psi) 

Blend of poly chloroprene and NBR Carbon black and multifunctional acrylate 50 15,000 20 (2,900) 

Thermoplastic elastomers based on polyolefins (TPO) are blends of PE or PP wifh EPDM elastomers wherein the elastomer is often cross-linked using thermochemical systems. TPOs more suitable for medical producfs with no chemical residuals can be made using EB processing to cross-link the elastomer portion in such an elastomer-plastic blend. The thermoplastic governs the melt transition, and thus the extrusion properties of TPOs. The radiahon response of these materials is also governed by the choice of fhe thermoplastic. An example of an EB cured blend of EPDM and polyefhylene used is for fluid transmission tubing and electrical insulation.  

A review article on electron beam processing of elastomers was written by Drobny.  

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