Pigments Powder for High Temperature Processing

Engineering Solutions for High-Heat Environments

Deqing Demi Pigment Technology Co., Ltd. provides specialized high-temperature stable pigments for industries facing extreme thermal conditions. Our products are the result of advanced mineralogical engineering, designed to replace unstable colorants in demanding manufacturing processes. We serve the engineering plastics, specialty coatings, and glass industries, providing the data and material quality necessary to ensure that color remains a stable component of the final product’s specification, regardless of the thermal stress applied during production.

High-Heat Application Sectors

• Engineering Plastics: Coloring for PEEK, PTFE, and other high-melt polymers.
• Specialty Glass: Pigmentation for colored glass enamels and coatings.
• Fluorocarbon Coatings: Colorants for high-performance architectural finishes.
• Thermal Barriers: Pigments used in coatings for heat-intensive industrial equipment.

High Temperature Performance Data

Stability Under Thermal Stress

• Phase Integrity: Maintains chemical and color stability across a wide temperature gradient.
• Low Volatility: Minimal outgassing at high temperatures, preserving the structure of the substrate.
• Refractory Nature: The pigment behaves like a ceramic material, resisting melting or sintering.
• Interfacial Stability: Does not react with binders or polymers at their peak processing temperatures.

• Q: What is the difference between these and standard iron oxides?

  A: Standard iron oxide yellows and blacks begin to change color at approximately 180∘C−200∘C. Our high-temperature range is specifically calcined to remain stable far beyond these limits.

• Q: Can these be used in glass frit?

  A: Yes, their mineral stability makes them ideal for inclusion in low-melting-point glass powders and enamels.

Advanced Thermal Synthesis

Our high-temperature pigments are produced using high-precision rotary kilns with multi-zone temperature control. This allows us to ensure that the entire batch has reached the necessary "transformation temperature" for maximum stability.

Thermogravimetric Analysis: We provide TGA curves for our high-temperature series, showing the weight stability of the pigment from ambient temperature up to 1000∘C, giving our customers the technical data needed for their engineering calculations.

Mapping Thermal Color Drift

Color science in high-heat applications involves quantifying "thermal drift." We use a spectrophotometer to measure the CIELab coordinates of the pigment after it has been subjected to specific heat intervals (e.g., 200∘C,400∘C,600∘C). This data allows engineers to predict the final appearance of their product after processing. Our aim is to maintain the Delta E within a range that ensures the visual consistency of the component, even after the most aggressive thermal cycles.