Against the backdrop of intensified competition and fluctuating raw material prices in the current plastic industry, how to effectively control production costs while ensuring product quality is a common concern for enterprises. Barium sulfate, as one of the most widely used inorganic fillers in plastic filling modification, has two core values: reducing production costs and improving product performance.
A、 The economic value of barium sulfate: directly reducing raw material costs
The market price of barium sulfate is significantly lower than that of various general plastic resins such as PP, ABS, PE, etc. In the formulation of plastic products, partially replacing resin with barium sulfate can directly reduce the cost of raw materials per unit weight while ensuring the basic performance of the product. The higher the filling ratio, the more obvious the cost advantage. This is also the main reason why barium sulfate is widely used in plastic pipes, sheets, injection molded parts and other fields.
B、 Product technical indicators and their impact on applications
The performance of fillers directly affects the processing and final quality of plastic products. The following analysis is based on specific technical indicators:
01. Dry barium sulfate content ≥ 98.5%
Firstly, the product is more durable – the internal structure of the plastic is more complete, and it is less likely to crack or break from impurities when subjected to force. Secondly, the electrical performance is more stable and the insulation performance is more guaranteed. Finally, it has a wider range of applications – with high purity, it can be used with confidence for products that require strict material stability.
02. Whiteness ≥ 99.0%
Whiteness directly affects the appearance of the product. High whiteness fillers have little effect on the color of the product itself, especially suitable for light or white products.
03. Iron content ≤ 0.001%
Iron is a sensitive impurity. Excessive iron content in wire and cable materials can affect insulation performance; In film products, resin degradation may be catalyzed. Iron content below the standard value is suitable for applications that require high purity.
04. Oil absorption 17.5g/100g
The oil absorption affects the processing technology. Excessive values will absorb more plasticizers or lubricants, increasing the cost of additives; If the value is too low, the dispersion may deteriorate. 17.5g/100g is within a moderate range and has good compatibility with most plastic systems.
05. 45 micron test sieve residue ≤ 0.01%
The lower the sieve residue, the fewer large particles there are, and the more evenly the filler is dispersed in the resin. This helps to improve the surface smoothness of the product, reduce defects, and ensure the stability of mechanical properties.
3. Summary
Overall, when choosing barium sulfate fillers, attention should not only be paid to price, but also to the matching degree between its key indicators and actual application needs. Barium sulfate with high purity, high whiteness, low impurities, and reasonable particle size distribution can reduce formulation costs while ensuring or even optimizing the final performance of plastic products.
