| 摘要 |
<p>The present invention provides a synthetic blade-skating pavement, i.e. made of materials different from ice and thus usable without the aid of cryogenic systems. The composition of the invention can be restored by melting the layers affected by wear, it comprises one or more organic paraffinic materials and is characterized in that it has:- a) penetration index, measured by needle penetrometer, ranging between 2 and 20 at operating temperature; b) glass transition temperature higher than operating temperature; c) dielectric constant lower than 2.5 at 10<6>Hz; d) viscosity at 200 DEG C not exceeding over 3000cps. n</p> |
