Effect of different fillers on the properties of EVA
In order to meet the social development and human needs, the shoe material industry is also constantly innovating, for example, the main material of shoe soles and slippers has been gradually replaced by the traditional soft PVC with EVA material.Compared with PVC, EVA has better resilience, abrasion resistance, and is more environmentally friendly and close to the human body in terms of material. In the production process of EVA shoe material, a certain proportion of inorganic filler is often added to achieve the effect of improving some of the performance and reducing costs.
In EVA shoe materials, commonly used inorganic fillers are mainly talc and calcium carbonate, and some products will also add fillers such as barium sulfate and sodium sulfate.
The effect of inorganic fillers on the physical properties of EVA shoe soles
The different types of inorganic fillers have different effects on the density and hardness of the finished products. Transparent powder1 has relatively low overall hardness and density and is suitable for light and soft products; barium sulfate has high overall density and hardness and is suitable for product weight gain. The overall hardness and density of talcum powder and calcium carbonate are relatively close to each other, and they have a certain degree of mutual substitutability in terms of hardness and density.
The effect of different fillers on the performance of EVA shoe materials
Inorganic filler filled with EVA shoes, in addition to reducing production costs, but also to improve some of the performance of the product, different fillers to enhance the performance of different, talcum powder has a good flake structure, so it has a better abrasion resistance; calcium carbonate and dolomite has a better elongation and tear strength; although the mechanical properties of the transparent powder is poorer, but it can enhance the finished product's transparency, translucence, to provide a better surface aesthetics. Conclusion: Different inorganic fillers have better elongation and tear strength.
Conclusion: Different inorganic fillers have different effects when applied in the EVA shoe material industry due to their different structures. Talc has better wear resistance and light weight; calcium carbonate has better toughness; barium sulphate can increase the weight of the finished products and improve the glossiness of the products; although the mechanical properties of the transparent powder are poorer, the finished products have better surface aesthetics. Therefore, EVA shoe material customers can choose the right kind of filler according to their own requirements for the finished products. Xufeng Powder is specialized in the research and application of talcum powder, calcium carbonate and other inorganic powders, welcome customers and friends to call us, we will be happy to serve you!
