7631-86-9 Silica Matting Agent For Economic Colour Paint Painting H-305

What will effect the silica matting agent's property？

The water content of precipitated silica includes: free water and bound water. The free water on the surface of silica is easy to remove

under heating. Too little free water means that there are not many light groups on the surface of silica, which reduces the activity of silica.

During mixing, silica aggregates and is difficult to distribute in the rubber. Less surface water not only affects the vulcanization speed, but

also reduces the reinforcement effect accordingly. If the free water is slightly higher, the mixed rubber has good operating performance, fast

powder absorption speed, less dust flying, good roll wrapping, and slightly faster vulcanization speed. However, if the water content is too high,

the heat generation is large, it is easy to burn, agglomerate, and disperse unevenly. The surface of the vulcanized rubber is prone to bubbles,

and the physical and mechanical properties are also reduced accordingly. Generally, surface water of 6-8% can best isolate silica molecules,

thereby preventing the particles from agglomerating again.

During mixing, it can be evenly distributed in the rubber, which is conducive to performance improvement and accelerates the vulcanization speed.

Bound water is "inside" silica, relatively stable, and can only be removed at temperatures above 400°C. The general content is 4.0-7.0%. If there

is too much bound water, it means that the gel content generated during the reaction is high, the activity of the finished product after drying is small,

and the reinforcement effect on silicone rubber is also small. Too little bound water indicates excessive dehydration during the reaction and a strong

tendency to sandification, which is also not conducive to reinforcement.

What roles will silica matting agent play in economic paint?

Silicon dioxide is also called as SiO2 powder. It is original material of silica matting agent. Silica matting agent can be used as various roles in

economic coatings.

1. Filler: silica matting agent can be used as filler in coating. It can expand the coating covered-area and enhance its durability.

2. Opacity: silica matting agent can improve coating's opacity.

3.Scratches resistance: silica matting agent can enhance coating ability of scratches resistance which can make it being durable.

4. Thermal insulation: silica matting agent has excellent thermal insulation which can keep the coating's surface's temperature from damages

of too high or too low temperature.

5. Adhesion: adding silica matting agent can improve the adhesive ability between paint film and substrate,ensuring better paint retention and

longevity.

6.UV resistance: Some formulations incorporate silica with UV stabilizers, protecting the paint from degradation caused by ultraviolet radiation.

7. Abrasion resistance: It can contribute to the abrasion resistance of the paint, making it suitable for high-traffic areas or exterior applications.

8. Cleaning properties: Silica-based particles can be hydrophobic, allowing paints to resist dirt and water accumulation.

When purchasing economic paint chemical dry materials, it's essential to consider the particle size distribution, purity, and the specific requirements

of the intended application. Suppliers may offer different grades of silica dioxide powder, such as colloidal silica, fumed silica, or precipitated silica,

each with its own characteristics and benefits.

The following specification parameters will be stated on our Certificate of Analysis.

* Are you a factory or trading company?

Yes,we are factory, but not only factory, we also have sales team, own designers, own showroom, can help buyers to decide

which products are their suitable choice, and all your inquiry will be replyed within 24 hours.

* Can I get some samples for testing?

We are honored to provide samples, the shipping cost should be paid by customers at first. And it will be returned to you in

our first time cooperation.

* What's your Delivery Time?

In generally, the delivery time is 5 days-15 days after receiving payment. For large quantity it will be checked with productiondept.

We will make the delivery as soon as possible with the guaranted quality.