| 摘要 |
A solid, polymeric electrolyte in membrane form, constituted by a solid solution of an ionic compound in a crosslinked polyether, is obtained: (1) by blending: (a) a prepolymer having a molecular weight comprised within the range of from 10,000 to 100,000, having the formula (I) <CHEM> wherein: R is an ethyl or methyl radical; x is an integer comprised within the range of from 2 to 5; n is comprised within the range of from 0.7 to 0.95; m is comprised within the range of from 0.3 to 0.05 and wherein n + m is 1 in an amount comprised within the range of from 20 to 80% by weight, with (b) an ionic compound, in an amount comprised within the range of from 1 to 30% by weight; in the presence, or less, of (c) a plasticizer selected from an oligomer or a dipolar aprotic solvent, in an amount comprised within the range of from 0 to 80% by weight; and (d) a free-radical-generating activator, in an amount comprised within the range of from 0 to 10% by weight; and, finally, (2) applying the resulting blend on an inert carrier and exposing said blend to a source of ultraviolet light, thermal radiation or electron beam, until the system is completely crosslinked. Said solid polymeric electrolyte is mechanically strong and highly conductive, even at low temperatures. The solid polymeric electrolyte can be used as the electrolitic separator in electrochemical devices, optical displays and sensors. <IMAGE> |
