CAS No.7631-86-9 Silicon Dioxide As Additive In Coating

How to choosing silica Matting Agent in medical film coating？

* Ideal matting effect

(1) Choosing large particle size. The even particle size of silica matting agent is larger, the matting effect is more effective.

But if the particle sizes is too large will make the coating's surface rougher to affect the feel and appearance.

* Ideal transparency

(1) When the amount added in the formula is the same, the smaller the average particle size of the matting agent, the better 

the transparency of the paint film, but the corresponding matting efficiency will also decrease. It should be pointed out that too 

high a fine powder content will have a negative impact on transparency.

(2) Surface treatment. Due to the different types of surface treatment of the matting agent, it will affect its wetting and 

dispersibility with the base material, thereby affecting the transparency of the paint film. Therefore, it is necessary to adjust the 

matching between the matting agent and the base material, and if necessary, it can be improved by adding a wetting and 

dispersing additive. At the same time, it is also necessary to pay attention to whether there are other factors that cause the 

transparency of the paint film to deteriorate, such as additives with poor compatibility or poor pigments.

* Ideal suspension performance

(1) Generally speaking, matting agents will delaminate and precipitate to a certain extent as the storage time of the coating 

increases. Products with organic surface treatment will have better anti-settling properties. Therefore, when designing the formula, 

we should consider how to avoid the precipitation of matting agents and add appropriate anti-settling additives.

* Ideal scratches resistance

The surface of the matting agent has been organically treated, which will improve the scratch resistance and wear resistance of 

the paint film to a certain extent.

Performances of medical film coating with silica matting agent

1. Adopted on excellent polyester(PET) material,produced by special coating technology.

2. Anti-static treatment,100% waterproof.

3. The white glossy surface,anti-skidding,anti-adhesion,suitable for long-term preservation.

4. High ink coverage and resolution,accurate and true image,outstanding color gamut wide.

5. Widely used for inkjet printing,the output of medical image such as X-ray, CT, NMR and PET - CT ,thephotograph,digital 

printing etc.

6. Environmental non-toxic,without any peculiar smell and harmful gas.

7.Compatible with most kinds of inkjet printers and all desktop printer,such as Epson,Canon,Fuji Xerox,HP, OKI etc.

Anticorrosion Pigments, Inkjet Receptive Coating, Matting Agent,PET