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Home / News / Industry News / Matting Powder Always Hard to Disperse? The Problem Is in the Wetting Step
Industry News
Matt CoatingsInksMatting PasteSilica DispersionDH-5038
In matt coating, ink, and matting paste production, silica matting powder — due to its large specific surface area and high oil absorption — readily develops wetting difficulty, agglomeration, and uneven dispersion. Not only does this increase system viscosity, it also affects matting effect, application performance, and storage stability. Improving matting powder wetting and dispersion efficiency is therefore an important step in improving matt system quality.
Low Dispersion Efficiency
Silica easily forms agglomerates — grinding time is long and production efficiency is affected.
Matting Paste Solid Content Limited
As matting powder content increases, system viscosity rises — difficult to prepare high-solid matting paste.
Unstable Matting Effect
Non-uniform matting powder dispersion easily causes inconsistent gloss, flooding, or localised brightening.
Insufficient Storage Stability
Settling and re-coarsening after extended storage affects product consistency.
DH-5038: Matting Powder Dispersant for Silica Systems
DH-5038 is a matting powder dispersant developed specifically for silica and other inorganic pigments, with excellent wetting capability and dispersion stability. The product reduces system interfacial tension, enabling matting powder to more readily break down to smaller particle size during mechanical dispersion and maintain a stable dispersed state.
In matting paste preparation, DH-5038 can significantly improve the matting powder addition ratio, enabling preparation of high-solid matting paste while also improving system flowability and storage stability. The product also has good environmental credentials, is biodegradable, and is suitable for food packaging film, plastic products, and all kinds of industrial coatings and ink applications.
| Wetting Performance | Reduces system interfacial tension — silica more readily wets and disperses during mechanical processing |
| Dispersion Efficiency | Improves silica de-agglomeration efficiency, enabling finer particle size at the same grinding energy input |
| High-Solid Matting Paste | Enables higher matting powder loading — high-solid matting paste can be prepared while maintaining flowability |
| Matting Effect Consistency | More uniform dispersion supports consistent gloss control and reduces flooding or local brightening |
| Storage Stability | Reduces settling and re-coarsening tendency during extended storage |
| Environmental Credentials | Biodegradable — suitable for food packaging film, plastic products, and relevant regulatory environments |
For matt coatings and inks, the dispersion quality of matting powder directly affects product appearance, application performance, and storage stability. Selecting a suitable matting powder dispersant improves silica wetting and dispersion efficiency, increases matting paste solid content, and enhances system stability — providing a more reliable dispersion solution for matt products.
Frequently Asked Questions
Why does silica have such high oil absorption compared to other pigments and fillers?
Silica matting grades are engineered to have an open, porous particle structure with very high internal surface area — the same structural properties that make them effective at matting by scattering light from the film surface. This high internal porosity means a large amount of carrier liquid must be absorbed to wet all the available surface area, resulting in the high oil absorption that makes high-solid silica paste preparation challenging. Reducing interfacial tension with a targeted dispersant reduces the amount of carrier needed to achieve equivalent wetting.
Does DH-5038 affect the matting efficiency of the silica in the cured film?
Its function is to improve wetting and dispersion, which supports more uniform silica distribution in the cured film — this generally improves the consistency and reproducibility of the matting effect rather than reducing it. Overdosage could in principle affect how silica particles protrude from the film surface (which determines matting efficiency), so evaluation at the recommended dosage range is always advisable before confirming the production addition level.
