Shrink-proof glazing agent and its application

Abstract

The invention discloses an anti-shrinkage glaze and its application. The anti-shrinkage glaze is calculated by mass percentage and consists of the following components: 50-80% of a water-based substrate wetting agent, 3% of a polyether-type nonionic surfactant ~5%, the balance is solvent. The anti-shrinkage glaze is used in inkjet printing of ceramics. The anti-shrinkage glaze agent of the present invention can effectively reduce the dynamic surface tension of the glaze slurry for ceramic inkjet printing, without foaming and stable foaming, and can also greatly improve the flow and spreadability of the glaze slurry and the wetting of the substrate and pigments It can effectively solve the phenomenon of glaze shrinkage and improve the excellent rate of finished products. In addition, the formula can be produced under normal temperature and pressure, and the process is simple, which is convenient for widespread 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.