Effects of homogeneous low voltage electron beam irradiation (HLEBI) without glue on the adhesive force of tensile shear strength (¸B) at each shear probability (P s ) of laminated PDMS/PTFE sheets of polydimethylsiloxane (PDMS) and Polytetrafluoroethylene (PTFE) were investigated. Although¸B of shear at low and mid P s of 0.06 and 0.50 were 0.015 and 0.04 MPa before treatment, 0.22 MGy-HLEBI enhanced the¸B up to the largest values of 0.098 and 0.11 MPa of the laminated sheets, respectively. They were more than 6 and 3 times larger than those before treatment. On the other hand, additional HLEBI apparently reduced the¸B of laminated sheets irradiated at more than 0.43 MGy as usual radiation damages. The effects of HLEBI on adhesion force of¸B can be explained by the enhancement of cross-linking at PDMS/PTFE interface. When HLEBI cut the chemical bonds and generated active terminated atoms with dangling bonds at cross-linked PDMS and PTFE polymers, strengthening the bonding force of cross-linking polymers was induced by the chemical bonding and intermolecular attractive force.

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An optimal condition to improve the adhesion of PTFE/PE lamination of Polytetrafluoroethylene (PTFE) untreated and Polyethylene (PE) activated by homogeneous low voltage electron beam irradiation (HLEBI) under each O2 partial pressure in N2 gas atmosphere prior to hot-press was studied. Its adhesive force of PTFE/PE with 0.22 MGy-HLEBI under optimal O2 partial pressure (20000 ppm) in protective N2 atmosphere was 14.6 N/m, which was about 2.2 times higher than that (6.7 N/m) of PTFE/PE with 0.22MGy-HLEBI under low O2 partial pressure (200 ppm) in N2.