| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for modifying the surface of a vulcanized rubber or a thermoplastic elastomer with which excellent slidability and durability against repeated sliding are imparted, and also sealability can be maintained, without using an expensive resin having self-lubricating properties.SOLUTION: A surface modification method targeting a vulcanized rubber or thermoplastic elastomer as an object to be modified comprises a step 1 of making a photopolymerization initiator adsorbed on the surface of the object to be modified using a UV ray with 300-400 nm wavelength; and a step 2 of irradiating a UV ray with 300-400 nm wavelength having the adsorbed photopolymerization initiator as a starting point to radically polymerize a monomer in the coexistence of a nitroxyl radical so as to grow a polymer chain on the surface of the object to be modified. |
