PAGs for optomechanical industry

Phosphopag-based coolant-lubricant:

* reduces duration of grinding by 30 %

* enhances the surface quality (reduces roughness) of the treated polished surface by two grades

* reduces the duration of polishing by 20 %

* facilitates flocculation of the glass scrap and its removal from the surface of the grinding tool

* reduces equipment corrosion

* is non-toxic and causes no allergy of the personnel, facilitates healing of pustules formed in the wound locations on the hands of machine operators

* prevents biofouling

Polyalkylene guanidines (PAGs) have found a novel application in optomechanical industry. Diluted water solutions (0.1-0.3 %) of PAG salts (Phosphopag) can be effectively uses as coolants and lubricants for diamond polishing of optical glass.

Water solutions of PAGs used as coolant and lubricant can effectively replace the glycerine solution with an essentially higher concentration (30 %), as well as polyethylene polyamine, and also toxic and sensitising lubricants based on bone glue and copper and nickel salts.

Lubricants for optical industry based on biocidal polymers have a number of technological advantages apart from the low toxicity and absence of corrosion activity. First, application of such lubricants increases the rate of glass grinding. Second, the glass dust is removed from the surface of the diamond tools.

This prevents the clogging of the latter, obviates the necessity of tool sharpening and thus increases the tool lifetime. And, last but not least, application of PAGs allows reaching a higher grade of surface polishing. This technological effect can be due to the surfactant properties of polyalkylene guanidines and their cationic activity.

The former cause loosening of the glass surface that makes the mechanical processing easier, while the latter facilitates flocculation of the glass dust formed during polishing and its removal from the tool surface.

Polyalkylene guanidine-based coolants and lubricants reduce the equipment corrosion. Biocidal properties of PAGs help suppressing all types of biofouling of the coolant and help to heal the small wounds, which are inevitable on the hands of the polishing machine operators.

Phosphopag-based coolants and lubricants for diamond polishing of glass are successfully applied at a number of optomechanical factories in Belarus and Russia. These are Belarus optomechanical works (Minsk), Research and Production Company “Optika” (Moscow), optomechanical works in Kazan, Vologda, Sergiev Posad, Lytkarino, and at the works of Corporation “Argus” (Snezhinsk, Chelyabinsk region).

Such coolants are also exported (to Germany and other countries). The experience of using PAG-based coolants and lubricants in optomechanical industry has proved the technological and economical efficiency of the method.

Stanislav KOZEL,

Deputy Director of the

Institute of Ecotechnologies

Часть информации на сайте получена из открытых источников. Основа ВикипедиЯ. | Пожалуйста, внимательно прочитайте эту страницу! |