Silver shielding glass glaze for car and slurry

Abstract

The embodiment of the invention provides silver shielding glass glaze for a car and slurry, and relates to the technical field of compositions for glass surface coloring. The silver shielding glass glaze for the car is formed by mixing glass mixed powder and inorganic pigment, wherein the glass mixed powder is formed by mixing three kinds of glass powder. Under the cooperative use of the three kinds of glass powder, the silver shielding glass glaze for the car can achieve better coloring performance on the basis of keeping better acid resistance, electroplating solution resistance and demolding performance, complete shielding at the edge of a car window is achieved, and silver line bus migration objects, buses, wire connectors of a defrosting system and the like at the edge of the window cannot be seen completely from the outer side of the vehicle, so that the appearance is kept clean and tidy, and good application prospects are achieved.

Description

technical field [0001] The invention relates to the technical field of glass surface coloring compositions, in particular to a silver-shielding glass glaze and paste for cars. Background technique [0002] A specific application for lead-free and cadmium-free glass frit compositions that melt at low temperatures is in automotive glass sections such as windshields and the inner surface edges of side and rear glass, usually brush-fired relatively narrow, opaque , Dark glaze band, on the one hand, this glaze band can significantly improve the appearance of the glass, on the other hand, it can hinder the transmission of sunlight, thereby preventing the degradation of the adhesive used to bond the glass under sunlight exposure. At present, the market has the following performance requirements for glass frit tapes: [0003] First, the glaze belt on the glass plate will be exposed to acid rain or the like during long-term use, and will turn white until it is acidified and peeled o...

AI Technical Summary

Problems solved by technology

[0004] Second, glaze-colored glass plates are usually tempered and hot-bent, specifically printing a paste-like glass glaze coloring composition on the edge of a cut flat glass of a predetermined shape, and then molding or quenching it by heating , various types of window glass, side window glass, rear window glass, etc. are bent by forced pressure in pressure molding; in the process of film pressing, the glaze coloring composition on the edge of the glass plate and the ceramic paper on the surface of the mold are printed , glass fiber cloth, stainless steel cloth or the like are in direct and continuous contact. If the release performance of the glaze is poor, the glass plate cannot be taken out of the mold smoothly, and the colored part will be stuck, resulting in waste products until normal production. Therefore, Glass glazes with excellent performance need to have good mold release properties;

[0005] Third, the expansion coefficient of glass glaze is very important. In order to improve the yield and ensure safety performance, usually the expansion coefficient of glass glaze needs to be lower than that of glass, otherwise it will cause great safety hazards

But for the edge of the window, on the one hand, the migration of the silver bar busbar, the busbar and the wire connectors of the defrosting system will appear messy here, unlike the regular arrangement of the busbar in the middle of the rear window. If you use dark amber The colored glaze cannot completely cover it, which will affect the appearance of the car; on the other hand, the middle part of the rear window usually requires a certain light transmittance to meet the driver's vision requirements, and then the edge of the window is no such requirement

Therefore, based on the above two considerations, it is necessary to use glazes with better shielding properties to completely shield the edge of the window, but the existing glazes cannot meet such shielding requirements.