Encapsulated Pigments: Techniques & Color Principles of Purple Enamel

Enamel pigments are an important component of the surface color of enamel products. Among them, encapsulated pigments have a unique encapsulation structure, which requires strict time control during the ball-milling process. Some enamel manufacturers have reported that when using encapsulated purple, the enamel products do not develop color. This article will take encapsulated purple as an example to analyze the application principles and precautions of encapsulated pigments in enamel production, aiming to enhance the color effect of enamel products.

Ordinary enamel pigments can be directly mixed with enamel frit without concerns about color development. However, encapsulated pigments are different. Once the encapsulation layer is damaged, they may fail to develop color, affecting the aesthetic and quality of the enamel products. Therefore, mastering the usage techniques and color development principles of encapsulated pigments is crucial for improving the quality and appearance of enamel products. During the enamel production process, it is essential to strictly follow operational procedures to ensure the integrity and color development of the encapsulated pigments.

1. Principles of Enamel Pigments

Encapsulated pigments are a new type of enamel pigment that encapsulates colorants within carriers like zirconium silicate. The zirconium silicate serves as a carrier that fixes the pigment molecules internally. This structure gives encapsulated pigments the following characteristics:

1.1.High Chemical Stability: Since enamel needs to be fired at high temperatures, encapsulated pigments effectively ensure the color stability of enamel products.

1.2.Prevention of Settling: Encapsulated pigments are less likely to settle during stirring, which facilitates uniform mixing with enamel frit.

1.3.Vibrant Colors: Encapsulated pigments have high color saturation, resulting in vibrant colors for enamel products.

2. Usage Methods for Encapsulated Purple

2.1.Control of Ball Milling Time: Before using encapsulated pigments, it is advisable to minimize the time that encapsulated purple is ball-milled with the enamel frit.

2.2.Ball Milling Sequence: Prior to using encapsulated purple enamel pigment, the ground coat frit or transparent frit should be ball-milled first. This is because the ball milling method for encapsulated pigments differs slightly from that of other enamel pigments. Milling encapsulated purple together with the enamel frit may lead to damage of the zirconium silicate encapsulation, affecting the color effect.

As a new type of enamel pigment, encapsulated pigments possess a unique structure and excellent performance. Correctly using encapsulated pigments in enamel production is vital for enhancing the color effects of enamel products. By appropriately controlling the ball milling time and sequence, one can fully leverage the advantages of encapsulated pigments, providing consumers with more aesthetically pleasing and durable enamel products.