Powder material activation equipment, coating equipment, and dispersing equipment

Release time:

2026-01-22 08:46

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As a core foundational material in modern industry, powder materials are present in dozens of fields, including building materials, plastics, rubber, coatings, new energy, and pharmaceuticals. In the building materials industry, calcium carbonate powder serves as a key filler for coatings and tiles, directly influencing the hardness and weather resistance of these products. In plastic processing, the addition of talc powder and mica powder can enhance the rigidity and heat resistance of finished products. In the new-energy sector, the dispersibility and stability of cathode materials for lithium batteries—such as ternary materials and lithium iron phosphate—as well as anode materials (graphite powder)—directly determine the battery’s energy density and cycle life. In the pharmaceutical industry, pharmaceutical excipient powders must meet stringent requirements for flowability and compatibility to ensure the efficacy of formulated products.

However, native powder materials often have inherent drawbacks: their surface polarity mismatch leads to poor compatibility with matrix materials, they tend to agglomerate easily, affecting the uniformity of dispersion, and their insufficient thermal and weather resistance limits their application scenarios.

The core function of the coating modification machine is to utilize mechanochemical effects. + Interface modification technology forms a uniform, dense coating film on the surface of powder particles, achieving the dual objectives of “modification” and “quality enhancement.” The raw powder is fed into the equipment via a feeding system, where it first passes through a high-speed dispersing device that breaks up particle agglomerates, ensuring the powder is uniformly distributed in a monodisperse state. At the same time, the temperature is adjusted according to the material properties to create a stable environment for the subsequent coating reaction—this step directly determines the uniformity of the coating film and prevents “incomplete coating” caused by particle agglomeration. The equipment generates strong shear forces through its built-in high-speed rotating impellers, enabling the modifier (such as coupling agents, surfactants, resins, etc.) to disperse evenly under mechanical action and adsorb onto the surface of the powder particles. This ensures that the coating film forms a firm chemical or physical bond with the particles, preventing it from peeling off during subsequent processing. The entire process operates in a closed-loop system, with no dust leakage, and the amount of modifier used can be precisely controlled, guaranteeing both effective modification and reduced production costs.

Whether it’s inorganic powders (such as calcium carbonate, talc, kaolin, wollastonite, magnesium hydroxide, etc.), organic powders (such as plastic powder, rubber powder, graphite powder, etc.), or highly active powders used in the new energy sector (such as cathode and anode materials for lithium batteries), precise coating can be achieved by adjusting the type of modifier and process parameters, thereby meeting the performance requirements of various industries.

The equipment allows for flexible adjustment of parameters such as rotational speed (shear force), temperature, modifier dosage, and processing time. Based on the specific requirements of customers for powder materials—such as dispersibility, compatibility, thermal stability, and hydrophobicity—a customized modification solution can be developed. For example, for calcium carbonate used as a filler in plastics, coating it with a coupling agent can enhance its compatibility with the plastic matrix and reduce agglomeration. For graphite powder used as a negative electrode material in lithium batteries, coating it with a resin can improve its cycling stability.

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