High-Temperature Bright Red Inkjet Ink for Ceramic Decoration
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Solution Overview
Problem
The ceramic industry faces a lack of high-temperature and bright red ink-jet inks suitable for ink-jet printing, which limits the decorative effect of ceramic products, as existing inks are not stable under high temperatures and are sensitive to firing atmospheres, leading to color degradation.
Innovation Solution
A high-temperature bright red ink-jet ink is developed by optimizing the composition of basic glaze powder, frit powder, solvent, and pigment particle size, using cadmium selenium red pigment coated with ZrSO4 for stability, and incorporating dispersing and stabilizing agents to ensure color purity and brightness, with a firing temperature range of 1080°C to 1230°C.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional printing technology with platemaking is used, then the printing process is complex and requires platemaking, but the ink requirements are less harsh and particle size can be larger
Solution Approach 1:
The invention extracts and eliminates the platemaking step from the traditional printing process by adopting ink-jet printing technology. Although this requires smaller ink particle sizes, the patent resolves this by developing specialized ink formulations with optimized pigment dispersion and nanometer-level particle control, thereby gaining operational simplicity while maintaining the required manufacturing precision through material science advances.
2Manufacturing precision
If pigment particle size is reduced to nanometer level for ink-jet printing, then the ink can pass through small nozzles, but the color becomes more difficult to achieve and variety is limited
Solution Approach 1:
The invention changes the physical and chemical parameters of the pigment particles, reducing them to nanometer level (d50≤0.5μm, d90≤1μm) while simultaneously optimizing the chemical composition of the ink vehicle and adding dispersing agents. This parameter optimization allows the ultra-fine particles to maintain excellent color brightness and achieve the desired red hue despite their small size, resolving the contradiction between particle size and color quality.
3Illumination intensity
If existing high temperature red glazes are used, then red color can be achieved, but the ink is not stable under high temperatures and is sensitive to firing atmospheres
Solution Approach 1:
The invention creates a composite ink formulation combining nanometer-level red pigment particles with specifically designed glass powder, frit powder, and organic solvent components. This composite structure provides thermal stability during high-temperature firing (1080°C-1230°C) and resistance to firing atmosphere variations, while maintaining excellent red color brightness. The synergistic interaction between components ensures both color quality and reliability.
4Illumination intensity
If ink formulation is optimized for color brightness, then the decorative effect is enhanced, but the ink may not meet the requirements of ink-jet printing machines
Solution Approach 1:
The invention optimizes multiple parameters simultaneously: particle size (d50≤0.5μm, d90≤1μm), viscosity, surface tension, and chemical composition. By carefully balancing these parameters, the ink achieves both excellent color brightness and full compatibility with ink-jet printing machines, including proper flow characteristics for nozzle passage, appropriate adhesion to ceramic substrates, and stability during storage and printing operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The ink achieves a bright, pure red color that remains stable under high temperatures, broadening the color gamut and ensuring compatibility with various ink-jet printing models and nozzles, while reducing sensitivity to firing atmospheres, thus enhancing the decorative capabilities of ceramic products.
Implementation Method 1
using cadmium selenium red pigment coated with ZrSO4 for stability
Implementation Method 2
after high temperature firing (1080°C∼1230°C)
Data Source
Figure 1
AI summary
The present invention provides a high temperature and bright red ink-jet ink for ceramic decoration, its preparation method and application thereof. On the base that the existing ink-jet ink production process, ink-jet printing equipment and ink-jet printing process are not made major changes, high temperature bright red ink basic glaze powder composition, basic glaze frit powder composition, solvent composition, basic glaze powder and bright red pigment grinding method and particle size optimization, ink composition and processing methods are adjusted and optimized. Thus, the performance of high temperature bright red ink can meet the requirement of the use of ink-jet printing machine, and after high temperature firing (1080°C∼1230°C), the surface decoration color of ceramic tile sprayed a single printed high temperature bright red is bright red, colorful, pure red, and at the superposing place with other color ink-jet printing ink, the color is bright, colorful, color gamut broad. At the same time, the technology has strong universality and is easy to popularize in the industry.