Method for measuring HF etching resistant performance of glass

Abstract

The invention discloses a method for measuring the HF etching resistant performance of glass. An etching resistant film is coated or stuck on the surface of glass; the glass surface covered by the film is prevented from being etched by etching solution; the whole glass is put in the etching solution; the glass surface, which is not covered by the etching resistant film, is etched by the etching solution; because of protection of the film, the glass surface covered by the etching resistant film is not etched by the etching solution; after etching is completed, the glass is taken out, and cleaned; the etching resistant film is peeled; the glass surface is scanned by a step profiler; the height difference between the glass surface protected by the etching resistant film and the glass surfacenot protected by the etching resistant film is measured; HF acid etching resistant data of a glass tin surface can be obtained; and the problem that the glass tin surface and an air surface cannot bedistinguished according to the original etching data can be solved.

Description

technical field [0001] The invention relates to the field of glass, in particular to a method for measuring the HF etching resistance of glass. Background technique [0002] The HF acid resistance test of glass usually uses the weight loss method, and the glass weight W before etching is weighed. 0 , put the glass into the etching solution to etch, take out the glass, wash and dry it, weigh the weight W after etching 1 ; Etching weight W = weight W before etching 0 - Weight W after etching 1 ; Etching thickness H=etching weight W / glass surface area S glass surface area S=glass length Lx glass width Wx2+ glass length Lx glass height Hx2+ glass width Wx glass height Hx2. [0003] This weight loss method has the following disadvantages: [0004] 1. The etching thickness of the weight loss method is calculated by dividing the weight by the surface area, and the accuracy depends on the accuracy of the weight and the accuracy of the length measurement; [0005] 2. The chemica...

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Problems solved by technology

[0005] 2. There is a slight difference in chemical composition between the tin surface and the non-tin surface of float glass, resulting in a difference in the glass's resistance to HF acid etching. The weight loss method cannot distinguish this difference