SU1624003A1 - Suspension for polishing optical glass - Google Patents

Abstract

The invention relates to polishing suspensions used in the treatment of optical glasses. The invention makes it possible to increase the polishing ability of a suspension by using a composition containing, wt.h .: water 100, polishing an abrasive PF, which is a mixture of oxides and fluorides of rare-earth elements 3-33 and 7-amino-1,3,5 triazadamantane 0.001 -0.1. 1 tab.

Description

The invention relates to polishing suspensions used in the treatment of optical glasses.

The purpose of the invention is to increase the polishing ability of the suspension.

As a polishing abrasive powder used brand PF (TU 95-1161-82), which has found wide application in polishing optical glasses. In the manufacture of a suspension, polishing abrasive (powder PF) and 7-amino-1,3,5-triaza admantane are introduced into the water in a predetermined ratio (parts by weight). The suspension is stirred.

The polishing capacity of the suspension is determined by the amount of polished glass in milligrams per 30 minutes of polishing. Polishing is carried out on a 2SP-200M machine in the following modes: n - 100 rpm; P - 100 g / cm2. Polishing pad pekokanifolny. Glass K8 brand is polished in the form of a flat disc C $ 75 ± 0.2 mm.

The results of the tests are presented in the table (the polishing values of the average of sin measurements).

A slurry for polishing optical glass of the same composition as known is used as the base object, since the suspension consisting of water and polishing abrasive is practically used at the present time in all glass processing enterprises.

As follows from the table, a suspension for polishing a composition with an optimum content of components has a value that is approximately 1.4 times the suspension of a known composition when polishing K8 glass.

i

Suspension effect

composition is observed when polishing glasses of other brands. The table shows the comparative data on the polishing ability of TF glass during polishing with known composition and proposed, taken at the optimum ratio of components (1.4 times increase).

L

w

The surface of the polished glass offered and known compositions of suspensions is identical.

Claims (1)

Invention Formula A suspension for polishing optical glass containing a polishing abrasive and water, characterized in that, in order to increase the polishing ability, it contains as a polishing abrasive PF polishing powder - a mixture of oxides and fluorides of rare-earth elements and additionally 7-amino-1,3,5-triaza admantane in the following ratio of components, wt. Water Polishing 100 3-33 7-Amino-1,3,5-triazaada-manthan abrasive 0.001-0.1 8 is known) known) K8 glass Water100 Polishing abrasive25 7-Amino-1,3,5-triazadamantan0, 06 Water100 Polishing abrasive33 7-Amino-1,3,5-triazadamantan0, 1 Water100 Polishing abrasive3 7-Amino-1,3,5-triazadamantan0, 001 Water .100 Polishing abrasive36 7-amino-1,3,5-triazadamantan0, 1 Water100 Polishing abrasive2 7-Amino-1,3,5-triazadamantan0, 001 Water100 Polishing abrasive25 7-Amino-1,3,5-triazadamantan0, 0005 Water100 Polishing abrasive25 7-Amino-1, 3,5-triazadamantan0, 15 Water100 Polishing abrasive25 Water100 Polishing abrasive3 57.1 55,8 33.5 52.2 30.7 42.2 49.4 40.2 22.1 Glass TF 5 Water100 Polishing abrasive25 7-Amino-1,3,5-triazadamantan0, 06 11 Water (known) Polishing abrasive x) There are scratches, dots, xx) Polishing pad is observed to be polished with abrasive. 96.5 100 25 68.0