| 摘要 |
PURPOSE:To obtain a radiation-resistant polymer compsn. which has excellent radiation resistance and does not have a corrosive action, by adding an acenaphthylene/styrene oligomer to a polymer material, carrying out a free radical generating treatment and polymerizing the oligomer. CONSTITUTION:An acenaphthylene (derivative) of formula I (wherein R is a 1-4 C alkyl, an alkoxy or an alkyl ester; and m is 0, 1, 2, 3 or 4) is copolymerized with a styrene (derivative) of formula II (wherein R' has the same meaning as in R; m is 0, 1, 2, 3 or 4) to produce an acenaphthylene/styrene oligomer wherein the average degree of polymn. of acenaphthylene (derivative) is 1 to 3. The oligomer is added to a polymer material (e.g., an ethylene/ propylene copolymer), a free radical generating treatment is carried out and to oligomer is polymerized in the polymer material to obtain a radiation- resistant polymer compsn. The compsn. is suitable for use as a covering material for wires and cables which are used in a radiated atmosphere.
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