Introductions
Low-cost silica dioxide powder can be used as a matte hardener in various applications such as coatings, paints, plastics,
and adhesives. Silica dioxide, also known as silica or silicon dioxide, is a commonly used filler material due to its low cost,
abundance, and desirable properties.
When used as a matte hardener, silica dioxide powder is typically added to the formulation in small amounts to create a
rough or textured surface finish. This can be useful in coatings and paints to reduce gloss and create a matte appearance.
In plastics, it can help improve scratch resistance and reduce surface reflection. In adhesives, it can enhance bonding strength
and provide a rough surface for better adhesion.
Silica dioxide powder is available in various particle sizes, ranging from fine powders to coarse granules. The particle size and
surface area of the powder can affect its performance as a matte hardener. Finer powders generally provide a smoother matte
finish, while coarser particles can create a more textured surface.
The cost of silica dioxide powder can vary depending on factors such as the purity, particle size, and quantity purchased. However,
silica dioxide is generally considered a low-cost filler material compared to other additives and fillers used in similar applications.
When selecting a low-cost silica dioxide powder for matte hardening, it is important to consider factors such as the desired matte
effect, compatibility with the formulation, and the specific application requirements. It is recommended to consult with suppliers or
technical experts to determine the most suitable silica dioxide powder for a particular application.
Typical properties
Appearance Very fine pale yellow powder [visual]
Chemical equivalent weight (g/eq) 92 [calc.]
Herein described to be typical properties and do not constitute specification limits.
Matting Agent for Polyester/TGIC powder coatings
Characteristics
1, It Can provides low gloss of ca.10% (60°), exceptional flow and good mechanical properties such as direct impact for
PES/TGIC based exterior durable powder coatings.
2, Curing @ 200℃(metal temperature) are required for both better flow and impact properties.
Use method & levels
1, TC-70 with other components of the formula before extrusion.
2, The use level is 1-5% by total weight of formulation, depends on the gloss required.
3, Ca. 1.1-1.2 parts of TGIC per weight part of TC-70 based on their chemical equivalent weights. Varying their total
concentrations of in the formulation can control different gloss levels of coating when both ratios were retained at above
fixedness.
Package & Storage
1, Packaging with PE lined Kraft paper bags. Net weight 25kg per bag.
2, Store in temperature between 2-32℃ or cool dry place. Keep away from heat and fire.
3, Based on our experience the shelf life of TC-70 under above conditions is at least 2 years.
4, Advisement
● When formulating TC-70, the gloss of coating will be determined by its concentration and the selected polyester resins.
It is important to select matched resins.
● The powder coating formulated by TC-70 have a bit yellowing tendency and poor wet-thermal resistance.
Anticorrosion Pigments, Inkjet Receptive Coating, Matting Agent