ポリメタクリロイルカーバメートとのIPN化によるポリウレタンの表面改質

抄録

Surface layer of polyurethane elastomers (PUEs) was modified by the use of methacryloylisocyanate (MAT). PUEs were prepared from poly (oxytetramethylene) glycol (Mn=2000), MDI and BD/TMP. MAT was penetrated into the surface layer of PUEs and polymerized. Morphology, dynamic mechanical properties, friction and abrasion chracteristics of these modified PUEs were studied by means FT-IR, polarizing microscope, dynamic viscoelastometer, Heidon 14 friction tester and DIN abraser. The modified surface layer was constituted of interpenetrating polymer network due to polymerization of MAI. The modified PUEs exhibited lower friction coefficient and higher abrasion compared with the unmodified PUE. The PUEs containing 5 to 8 per cent PMAI by weight showed the lowest friction coefficient and excellent abrasion resistance.