The modification effect of precipitated silica in the plastics industry is mainly reflected in the following aspects:

1. Improving the physical properties of plastics
Enhancing strength and toughness: Silica particles can be fully and evenly dispersed in plastic materials, significantly improving the strength, toughness and ductility of plastics. This feature makes the modified plastics more durable when subjected to external forces.
Improving transparency: Since silica has excellent light transmittance and small particle size, it can make plastics denser, thereby improving the transparency of plastics. This is especially important for plastic products that require high transparency (such as optical materials, food packaging, etc.).
Improving waterproof and anti-aging properties: Silica can also significantly improve the waterproof and anti-aging properties of plastics. This allows the modified plastics to maintain good performance and service life in humid or harsh environments.

2. Improving the processing properties of plastics
Improving fluidity: Silica is added to plastics as a filler to improve the melt fluidity and processing properties of plastics. This helps to reduce processing temperatures, improve production efficiency, and reduce energy consumption during processing.
Reduce shrinkage and deformation: During the plastic processing process, white carbon black can reduce the shrinkage and deformation rate of plastics, making the size of the final product more stable and more precise.

3. Expand the application field of plastics
Replace traditional materials: Modify ordinary plastics (such as polypropylene) through nano-white carbon black, so that their performance can reach or exceed that of some high-end engineering plastics (such as nylon 6). This can not only reduce production costs, but also achieve certain functional characteristics that traditional materials cannot achieve (such as bright colors, high transparency, etc.). Therefore, the modified plastics have been widely used in more fields.
Develop new materials: White carbon black can also be used in combination with other materials to develop new plastic materials with special properties. For example, the combination of white carbon black and nanomaterials can prepare plastic composite materials with excellent mechanical properties and thermal stability; the combination of white carbon black and conductive materials can prepare plastic materials with conductive properties, etc.

4. Improve economic and social benefits
Reduce production costs: Since the price of white carbon black is relatively low and the modification effect is significant, the use of white carbon black to modify plastics can greatly reduce production costs. This is of great significance to improving the market competitiveness of plastic products.
Promote environmental protection: As an inorganic filler, white carbon black has the characteristics of being non-toxic, odorless, and non-flammable. Therefore, using it to modify plastics is conducive to reducing the emission of harmful substances and environmental pollution. At the same time, the modified plastics are easier to recycle and reuse after being discarded.

In summary, the modification effect of precipitated white carbon black in the plastics industry is mainly reflected in improving the physical properties of plastics, improving processing performance, expanding application areas, and improving economic and social benefits. These modification effects have made the modified plastics widely used in more fields and favored by the market.