русский
Español
Français
Home / News / Industry News / Waterborne Paint Settling and Sagging — DH-6930S Anti-Settling Agent Solution
Industry News
Waterborne Coatings · Anti-Settling · DH-6930S
As waterborne coating applications continue to expand, products must satisfy not only performance requirements but also storage stability and application performance. However, in actual production and use, pigment and filler settling, application sagging, and non-uniform metallic pigment orientation remain relatively common problems — affecting both application efficiency and the visual quality of the cured film.
Selecting a waterborne anti-settling agent with combined anti-settling, anti-sagging, and thixotropic performance is therefore important for improving overall waterborne coating quality.
Pigment and Filler Settling
During storage, pigments gradually settle, causing product separation — requiring extended stirring before use.
Sagging During Application
Insufficient system thixotropy causes sagging when applied in thick coats, affecting application efficiency and film appearance.
Non-Uniform Metallic Orientation
Aluminium flakes in waterborne metallic paint orient inconsistently, causing reduced gloss and a poor metallic effect.
Insufficient System Stability
After temperature change or long-term storage, system stability declines, affecting product consistency.
Why Simply Increasing Viscosity Falls Short
Some formulators address settling by increasing system viscosity or adding more filler. However, this often causes leveling to decline and application performance to worsen, even affecting film appearance. By contrast, using a waterborne anti-settling agent with excellent thixotropy can improve anti-settling and anti-sagging capability while maintaining application flowability, and can also improve metallic pigment orientation — so the product achieves both storage stability and application performance.
DH-6930S: Waterborne Anti-Settling Agent
DH-6930S is an anti-settling agent for waterborne coating systems with excellent thixotropy, anti-sagging performance, and anti-settling effect, suitable for improving storage stability. The product is especially suited for waterborne metallic paint, promoting uniform directional orientation of aluminium flakes and improving film gloss and metallic quality. It has good temperature resistance and is easy to disperse — it can be added at any stage during paint manufacture.
It is recommended to pre-prepare a 20%–30% pre-gel using high-speed dispersion for mixing to fully develop product performance. Adjusting system pH to above 8 gives more ideal application results.
| Thixotropic Performance | Builds appropriate low-shear viscosity for storage stability while flowing freely under application shear |
| Anti-Settling Effect | Reduces gravitational settling of pigments and fillers during storage, maintaining more uniform distribution |
| Anti-Sagging Performance | Low-shear structural resistance prevents film sagging on vertical surfaces during application |
| Metallic Flake Alignment | Promotes uniform directional orientation of aluminium flakes in waterborne metallic paint, improving gloss and metallic quality |
| Temperature Resistance | Maintains effective performance across varying storage and application temperatures |
| Addition Flexibility | Can be added at any stage during paint manufacture; pre-gel preparation is recommended for best results |
For waterborne coatings — especially waterborne metallic paint — good anti-settling performance affects both product storage stability and directly influences application effect and film appearance. Selecting a stable waterborne anti-settling agent improves settling, sagging, and metallic flake orientation problems, providing a more stable and reliable application performance for the product.
Frequently Asked Questions
Why is pre-gel preparation recommended rather than direct addition?
Pre-gel preparation allows the anti-settling agent to fully hydrate and develop its thixotropic network before being introduced to the full formulation. Direct addition to a fully formulated system may not allow sufficient dispersion time for the additive to reach its performance potential — particularly in higher-viscosity systems where thorough mixing is more difficult.
Why does adjusting pH to above 8 improve performance?
DH-6930S has ionic groups whose activity and network-forming efficiency are pH-dependent. At pH above 8, the ionisation state is more favourable for developing the thixotropic structure that provides anti-settling and anti-sagging performance. Systems with lower pH should be adjusted before or after additive addition to ensure the target viscosity profile is reached.
