Shrink-proof glazing agent and its application

Abstract

The invention discloses a shrink-proof glazing agent and its application. The shrink-proof glazing agent comprises 50-80mass% of an aqueous base material wetting agent, 3-5mass% of a polyether nonionic-surfactant, and the balance solvent. The shrink-proof glazing agent can be applied to ceramic inkjet printing. The shrink-proof glazing agent has the advantages of effective reduction of the dynamic surface tension of a glaze slip for the ceramic inkjet printing, no foaming, no bubble stabilizing, great improvement of the flow spreadability of the glaze slip and the wetting performance of the glaze slip to a base material and a pigment, effective solving of the occurrence of a glaze shrinkage phenomenon, and improvement of the superior finished product rate; and additionally, the above formula of the shrink-proof glazing agent has the advantages of production completing at normal temperature under normal pressure, simple technology, and convenience of the wide popularization and use.

Description

technical field [0001] The invention belongs to the building pottery industry, and in particular relates to an anti-shrinkage glaze and its application. Background technique [0002] Inkjet printing technology is a non-contact digital printing technology successfully developed in the late 1970s. It sprays ink onto the surface of various media through the nozzles on the print head, realizing non-contact, high-speed, low-noise monochrome and color text and image printing. On the basis of inkjet printing technology, the ceramic pigment powder is prepared into ink, and through computer control, the configured ink can be directly printed on the surface of architectural ceramics for decoration by using a special printer. China entered the field of ceramic inkjet printing later than Italy and Spain. It has also begun to rise rapidly in the past two years and has shown a good momentum of development. As of the first half of this year, China has more than 200 ceramic inkjet printers...

AI Technical Summary

Problems solved by technology

[0003] In the production process of ceramic inkjet printing, after the inkjet printing is completed, the next process is to apply a layer of glaze slurry that has a transparent effect and protects the pattern after being fired by spraying or pouring. It is a solvent-based system, and the water-based glaze slurry cannot be spread well on it. This process is prone to glaze shrinkage, which will affect the quality and aesthetics of the product and reduce the pass rate

In order to solve this problem, it is generally used to constantly adjust the glaze formula or change the body temperature, but this is not only time-consuming and laborious, but also cannot achieve the desired effect.

Recently, some surfactants are added to the glaze slurry to solve the glaze shrinkage problem, but it is easy to generate foam and cause secondary problems in production. Therefore, it is urgent to develop an anti-shrinkage glaze additive with excellent performance.