Polishing film

Abstract

The present invention provides a polishing film with which, even when water containing impurity ions is used as a polishing liquid, the abrasive particles comprising SiO2 are less apt to adhere to the polished surface, e.g., the polished surface of an end of an optical fiber itself, and which is less apt to cause the optical loss attributable to scratches or edge chips in the polished surface. The polishing film hence renders good finish-polishing quality possible. This polishing film is characterized by comprising a substrate and an abrasive layer which has been disposed on a surface of the substrate and which comprises abrasive particles comprising SiO2, a binder resin, and an adhesion inhibitor containing a phosphorus compound.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a Section 371 of International Application No. PCT / JP2012 / 002703, filed Apr. 18, 2012, which was published in the Japanese language on Nov. 1, 2012, under International Publication No. WO 2012 / 147312 A1 and the disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]The present invention relates to a polishing film. In further detail, the present invention relates to a polishing film used for polishing a polishing surface of a substance to be polished (such as an optical fiber, an optical lens or a magnetic disc substrate).[0003]Conventionally, as a connecting member of optical fibers in an optical fiber communication network, an easily-detachable optical fiber connector is widely used. When the optical fibers are connected using the optical fiber connector, they are connected in a situation where respective connecting end surfaces {end surfaces of an optical fiber body (glass fiber) an...

AI Technical Summary

Benefits of technology

[0012]Particularly, recently, from the viewpoint of cost reduction in the polishing process, not ultrapure water or purified water but filtered water, which can be obtained without ion exchange and distilling but only by filtering for the purpose of foreign body removal, is used as a polishing liquid, and if such filtered water is used, because of an effect of impurity ions in the filtered water, abrasive particles containing SiO2 dislodged from the abrasive layer are agglutinated and their dispersibility is inhibited, and an amount of adherence of the abrasive particles including SiO2 onto the end surface of the optical fiber body after polishing may be increased. It is difficult for the adhered abrasive particles to be removed, and it causes scratching and chipping (for example, a defect of the edge part on the polishing surface and the like), and there is a problem where a light loss could occur on the connecting end surface of the optical fibers after being connected.

[0024]According to the present invention, even when water containing impurity ions is used as a polishing liquid, the abrasive particles containing SiO2 are not likely to be adhered onto the polishing surface of the substance to be polished, and a polishing film that can realize excellent polishing finished quality that is not likely to cause a light loss attributable to scratching or (defective) chipping on the polishing surface can be obtained.

Problems solved by technology

In other words, with the conventional polishing films, for example, in the final-finishing polishing process of the connecting end surface of the optical connector, when abrasive particles containing SiO2 are used, because the optical fiber body in the optical fiber connector contains SiO2, abrasive particles containing SiO2 may become adhered to the optical fiber connector, and if there is such adherence, it causes scratching and / or chipping (for example, a defect of an edge portion on the polishing surface and the like), and a light loss could occur on the connecting end surface of the optical fibers after being connected.

It is difficult for the adhered abrasive particles to be removed, and it causes scratching and chipping (for example, a defect of the edge part on the polishing surface and the like), and there is a problem where a light loss could occur on the connecting end surface of the optical fibers after being connected.

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