| 摘要 |
A process for producing an easily-slidable polyarylene thioether film having an arithmetic average surface roughness, Ra, in a range of 2-200 nm and a dynamic friction coefficient, mu k, within a range of 0.1-0.6 at least on one surface of the film, which comprises: a) contacting at least one surface of an amorphous film, containing the polyarylene thioether, consisting essentially of repeating units of the formula: <IMAGE> with at least one organic solvent having a solubility parameter within a range of 8.5-11.5, and being selected from the group consisting of ethers, thioethers, organic amides, halogenated hydrocarbons, carbon disulfide, aromatic hydrocarbons, pyridines, quinolines, nitro compounds, ketones, esters, cyano compounds and sulfones; or a mixture of any of the above solvents with water, alcohols or aliphatic hydrocarbons; until the arithmetic surface roughness, Ra, of the contacted film reaches 10-150 nm, thereby increasing a degree of crystallization at the surface of the film which is higher than that of the inside; b) stretching the contacted film at a temperature within the range of 70-130 DEG C. and at an area stretching factor of 4-18 times; and c) heat setting the stretched film at a temperature within the range of 180 DEG -280 DEG C. for a time within a range of 1-2000 seconds.
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