Yuan lei's little knowledge | what are the advantages and disadvantages of transparent powder as filler
Transparent powder is a non-metallic mineral with high transparency, good whiteness, non-toxic, tasteless, acid and corrosion resistance. With high transparency, the refractive index of the filling material itself is very close to that of most synthetic resins, so the filling amount of the filler does not affect the transparency of the finished product; it can improve the surface smoothness and abrasion resistance of the product; low oil absorption, large filling amount, which is beneficial to reduce the manufacturing cost of the product.
Transparent powder is a new type of inorganic filler, which has the characteristics of high transparency, good hardness, good hue, high gloss, good collapse resistance and less dust when used. Widely used in oily furniture paint, decoration paint, adhesives, inks, and plastics. At first, transparent powder was only used in oily wood paint. In a few years, the market reaction gradually changed from unfamiliar and understanding to cautious use and a large number of application stages. From a single paint industry to the paint industry, to the entire chemical industry.
Transparent powder also has the characteristics of high toughness, so that the quality of the paint film has been greatly improved, its use value has been recognized by the paint industry, and some well-known enterprises have adopted it in large numbers. Transparent powder has good chemical stability, acid and alkali resistance, and does not contain toxic and harmful substances, allowing customers to use it at ease.
Transparent powder as a filler in the application, there are several small problems need to pay attention:
1. High grinding difficulty
Because of its high hardness, high toughness will cause the paint film is difficult to polish, which needs to change from the concept, because the hardness, toughness, means that the quality of the paint film is improved, the relative polishing difficulty is also increased.
2. Transparent powder is difficult to prevent settling
There are many successful experiences in the paint industry in the anti-sinking of pigments and fillers. Usually, there are two principles of anti-sinking: one is longitudinal anti-sinking and the other is horizontal anti-sinking. As soon as the transverse and longitudinal cross, it will form a reticular structure with the best anti-settling effect. Of course, anti-settling is not absolute. When the paint is thin, there is still a tendency for transparent powder to sink compared with resin, because its specific gravity is larger than that of resin, so the spraying time is required to be adjusted appropriately.
3. Moisture-proof is difficult
Some transparent powder on the market is very easy to absorb moisture, so the packaging must be moisture-proof.
Transparent powder as a kind of outstanding performance, more economical, environmental protection, the use of more secure functional transparent filling material, will bring a new pattern for the polymer material filling material industry.
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