Application of transparent filler
Common inorganic fillers such as common talc, calcium carbonate, etc., because of its refractive index and the vast majority of the resin has a large difference, so after filling, for the finished product of the light transmittance has a greater impact, so the early transparent, translucent plastics or coatings are less or no filler, resulting in a high overall cost, so manufacturers are also constantly looking for ways to reduce costs. With the development of inorganic filler industry, transparent filler gradually enter the market, many transparent filler on the market are called transparent powder, but each manufacturer's transparent powder may be different inorganic non-metallic mineral materials, such as: metamorphic powder, quartz powder, calcium sulfate, as well as special talc, calcium carbonate and so on. The differences in chemical composition and crystal structure lead to different transparency and performance in different material applications. The following is a brief introduction to the application of different transparent fillers in various industries.
I. Modified plastics
Transparent inorganic filler and ordinary filler in PP-T20 transparent effect comparison
In the modified plastics industry, there are many products with demand for apparent transparency, such as: lunch boxes, transparent shoe boxes, lampshade panels and so on. Traditional fillers, such as ordinary talc and calcium carbonate, have a large impact on the transmittance of the material, and the addition of transparent inorganic fillers has improved the transmittance of the material compared to ordinary fillers.
II. Shoe material industry
TPR semi-transparent sole
With the development of shoe material industry, the material of shoe material industry has also undergone a radical change. In recent years, transparent or semi-transparent TPR outsole is very popular among consumers, but the price of TPR material is relatively high, and the filling of traditional filler will greatly reduce its transparency, affecting the aesthetics, so the transparent inorganic filler has a wide range of transparent or semi-transparent shoe soles.
In addition to the above transparent or semi-transparent TPR soles, imitation popcorn shoes also have a certain demand for light transmittance, this is due to the ETPU made of real popcorn soles process and the special nature of the material, the finished product has a certain degree of light transmittance, and by the EVA material made of imitation popcorn shoes, if filled with ordinary fillers, the light transmittance is insufficient. Therefore, in the production process of EVA imitation popcorn shoes, the ordinary filler can be changed to our porcelain white series of calcium carbonate, to improve the light transmittance, and improve the realistic effect of imitation popcorn shoes.
