Will nucleating agents damage processing equipment and pose a risk of corrosion

2026-07-25 17:52:08

In the mass production of plastic injection molding and extrusion, the service life and production stability of equipment are key concerns for enterprises. Many processing practitioners are concerned about the long-term contact of powder additives with metal parts such as screws and barrels when using Nucleating agents for the first time, whether it will cause wear, corrosion, accelerated equipment aging, and other issues. In fact, the physical and chemical properties of nucleating agents that comply with regulatory standards are stable. Under normal and standardized use, they will not cause corrosion damage to processing equipment, nor will they accelerate equipment wear and tear. There is no need to overly worry about equipment safety hazards.

From the perspective of the physical and chemical properties of raw materials, regular nucleating agents are mostly neutral and stable powders with mild acidity and alkalinity, and do not have strong acid or alkali characteristics. They will not produce strong corrosive substances in both room temperature and high temperature melting states. During the plastic processing and melting process, nucleating agents are evenly dispersed inside the melt, fully fused with the plastic substrate, and no corrosive precipitates are produced throughout the process. There is no chemical reaction with the metal material of the equipment, so there is no risk of corrosion of core components such as screws, barrels, and molds. Long term conventional use will not damage the equipment structure.

Many people tend to confuse the concepts of wear and corrosion, mistakenly believing that the friction loss caused by powder residue belongs to corrosion damage. Nucleating agents belong to ultrafine powder materials with low hardness and fine and uniform particles. Compared to hard filling agents such as calcium carbonate and talc powder, nucleating agents have a lower coefficient of friction and minimal mechanical wear on the inner walls of equipment. Under normal micro addition conditions, it will not exacerbate screw rotation wear, nor will it cause scratches or increased wear on the inner wall of the equipment, making it suitable for long-term continuous production.

The ones that may truly cause abnormal equipment wear and tear are mostly non-standard and inferior additives and non-standard operations. Part of the non-standard nucleating agents with low purity and high impurity content are mixed with hard particles and coarse slag impurities inside. These impurities have high hardness and uneven particles, and long-term friction with the inner wall of the equipment with the melt can cause slight mechanical wear and affect the service life of the equipment. At the same time, if the nucleating agent that is damp and clumped is not fully dispersed and directly fed, it will cause uneven mixing of the melt, local particle hardness, increase equipment operating load, and lead to increased friction loss.

In addition, incorrect processing techniques can indirectly affect the equipment status. Excessive processing temperature can lead to the decomposition of additives and the production of trace impurities. The material will carbonize and adhere to the inner wall of the equipment, and long-term accumulation can easily cause screw carbon deposition and poor discharge, increasing the burden of equipment cleaning. Excessive addition of nucleating agents can alter the fluidity of the melt, leading to an increase in equipment operating pressure, abnormal load, unstable discharge, and indirectly affecting the stability of equipment operation.

Overall, compliant and high-quality nucleating agents have no corrosion risk, extremely low wear and tear, and will not damage plastic processing equipment. During the production process, only compliant raw materials need to be selected to avoid inferior non-standard products. At the same time, materials should be moisture-proof and refined, and reasonable addition ratios and processing temperatures should be controlled to completely avoid the hidden danger of equipment loss. Standardizing the use of nucleating agents can not only stably improve the performance of plastic products, but also ensure the long-term stable operation of processing equipment, balancing production quality and safety.