Durable Pigments Powder for Outdoor Use

Long-Life Solutions for Outdoor Environments

Deqing Demi Pigment Technology Co., Ltd. specializes in the production of inorganic powders designed for the "long-life" segment of the building and industrial markets. We understand that outdoor durability is measured in decades, not years. Our manufacturing process includes specialized calcination steps that harden the crystal structure of the pigment, making it resistant to the leaching effects of acid rain and the abrasive nature of wind-borne particulates. We provide the stability required for modern architectural landmarks and infrastructure.

Outdoor Exposure Applications

• Architectural Profiles: Coloring for aluminum and PVC window frames and siding.
• Outdoor Infrastructure: Pigmentation for noise barriers, bridge coatings, and utility enclosures.
• Agricultural Plastics: UV-stable colorants for heavy-duty storage tanks and equipment.
• Signage and Wayfinding: Durable color for permanent outdoor public information systems.

Outdoor Durability Technical Table

Physical Stability Characteristics

• UV Energy Dissipation: Converts absorbed solar energy into heat without breaking the atomic bonds of the pigment.
• Hydration Resistance: Low surface energy prevents the absorption of atmospheric water, reducing the risk of frost damage.
• Chemical Stalwartness: Remains non-reactive when in contact with atmospheric pollutants like sulfur dioxide.
• Color Retention: Maintains the original L* value (lightness) throughout the service life of the substrate.

• Q: How is the 'durability' of these pigments verified?

  A: We use Xenon Arc accelerated weathering chambers that simulate the spectral distribution of natural sunlight combined with water spray to replicate years of exposure in weeks.

• Q: Do these pigments prevent the plastic from becoming brittle?

  A: By absorbing UV radiation that would otherwise reach the polymer chains, these pigments act as a secondary stabilizer, effectively extending the mechanical life of the plastic.

Batch Testing for Environmental Stability

Our production facility includes a dedicated environmental testing lab where every 20th batch is subjected to a 500-hour accelerated UV test. This ensures that the environmental resistance remains consistent regardless of raw material variations.

Technical Support: We assist clients in calculating the "Total Solar Reflectance" (TSR) of their outdoor products, helping them choose colors that minimize heat build-up in outdoor structures.

Reflectance and Heat Management

In outdoor applications, color science extends into the near-infrared (NIR) spectrum. Our durable pigments are analyzed for their ability to reflect NIR radiation, which accounts for approximately 50% of solar heat. By providing pigments with high TSR values, we help manufacturers create "cool" surfaces that reduce thermal expansion stress. We provide full spectral reflectance data from 300nm to 2500nm, allowing for precise modeling of the material's thermal behavior under direct sun.