분말 표면 개질 involves treating the powder surface using physical, 화학적인, or mechanical methods. The goal is to alter its physical and chemical properties or impart new functions. This meets the needs of modern materials, processes, and technologies. Understanding the role of surface modification and powder properties helps improve material performance. Controlling modifier quantity, choosing the right equipment and process enhances 분말 도포. It can even give powders new functions or performance capabilities.
The role of modification
The role of powder surface modification varies by application. The main goal is to enhance powder performance or impart new functions. This meets the needs of new materials, technologies, and product development. Powder modification has five main functions:
- Transform inorganic fillers from simple additives to functional fillers.
- Provide new technologies for polymers and composite materials.
- Improve particle dispersion and prevent aggregation.
- Enhance the stability of powder materials and product performance.
- Improve environmental sustainability and economic production, increasing added value.
Powder raw material properties
The properties of powder materials mainly include acidity, alkalinity, surface structure, functional groups, adsorption, and chemical reactivity. Surface modifiers should chemically react or adsorb onto the powder surface whenever possible. Physical adsorption may desorb under strong stirring or extrusion in later applications. For example, silicate minerals like quartz, feldspar, mica, and kaolin can bond with silane coupling agents. This forms a strong chemical adsorption. However, silane coupling agents generally do not react or adsorb onto carbonate-based alkaline minerals. Titanates and aluminates, under certain conditions, can adsorb onto carbonate-based alkaline minerals. Thus, silane coupling agents are unsuitable for modifying carbonate-based alkaline minerals like light and heavy 탄산 칼슘.
Modifier dosage
The optimal amount of surface modifier for monolayer adsorption on particles depends on the specific surface area of the powder and the molecular cross-sectional area of the modifier. However, this amount may not correspond to 100% coverage of the surface modifier. For inorganic surface 코팅 modification, different coating rates and layer thicknesses can exhibit varied characteristics, such as color and gloss. Therefore, the actual optimal amount should be determined through modification and performance tests. This is because the amount of modifier is related to both the dispersion and uniformity of coating during surface modification. It also depends on the specific requirements of the application system for the surface properties and technical specifications of the powder.
Modification process
Once the surface modifier amount and formulation are determined, the surface modification process is one of the key factors influencing the effect. The process must meet the application requirements or conditions of the surface modifier. It should ensure good dispersion of the modifier and achieve uniform and strong coating on the powder surface. At the same time, the process should be simple, with controllable parameters, stable product quality, low energy consumption, and minimal pollution.
Modification equipment
분체도장용 터보밀
강력한 와류흐름장으로 순간 분쇄 및 코팅
테이퍼형 회 전자와 고정자를 채택하고 회 전자와 고정자 사이의 간격을 조정할 수 있습니다. 강력한 와류 흐름장, 로터의 선형 속도는 120m/s에 도달할 수 있으며 이는 특히 응집된 재료의 분산, 감소 및 분쇄에 적합합니다. 재료는 회전자와 고정자 사이에서 고속으로 충격을 받고 절단되고 문질러져 연삭 및 코팅 공정이 완료됩니다.
독일의 노하우와 중국 장비를 기반으로 설계된 연속분말표면코팅 시스템으로 다양한 분말의 코팅에 활용이 가능합니다. 탄산 칼슘 (GCC, PCC), 카올린, 활석, 운모, 흑연, 황산바륨, 화이트 카본 블랙, magnesium hydrate, zinc oxide, aluminum oxide, and is suitable for a variety of solid/liquid coating agents, like aluminate coupling agent, titanate coupling agent, silane coupling agent and stearic acid. Coating machine consists of three units of mixing rooms. High-speed rotation creates great vortex flow inside these special-shaped rooms. Powder and coating agent are mixed in the high-speed gas-solid vortex flows.
Coating machine with both surface coating and particle dispersing functions is suitable for various powders with different fineness, and has a unique coating effect for the materials with small apparent specific gravity and high volume to weight ratio. Automatic temperature control system ensures stable high temperature for coating agent melting into liquid and mixing with uncoated powder. Heating and cooling of powder and coating agent are completed in one machine, which does not need independent cooling system. High utilization ratio of coating agent, high powder-coated rate, high activation grade, low energy consumption, and very few agglomerates in final coated product. The whole system is operated under negative pressure, no dust emission, and low labor intensity.
분말 코팅용 3롤러 밀
코팅 the powder surface by changing the cyclone vortex According to different materials and application industries, the production capacity and 입자 크기 range will be different. Please contact our engineers to customize the equipment for you. Our experts will contact you within 6 hours to discuss your needs for machine and processes.
독일의 노하우와 중국 장비를 기반으로 설계된 연속분말표면코팅 시스템으로 다양한 분말의 코팅에 활용이 가능합니다. 탄산 칼슘 (GCC, PCC), 카올린, 활석, 운모, 흑연, 황산바륨, 화이트 카본 블랙, magnesium hydrate, zinc oxide, aluminum oxide, and is suitable for a variety of solid/liquid coating agents, like aluminate coupling agent, titanate coupling agent, silane coupling agent and stearic acid. Coating machine consists of three units of mixing rooms. High-speed rotation creates great vortex flow inside these special-shaped rooms. Powder and coating agent are mixed in the high-speed gas-solid vortex flows.
Coating machine with both surface coating and particle dispersing functions is suitable for various powders with different fineness, and has a unique coating effect for the materials with small apparent specific gravity and high volume to weight ratio. Automatic temperature control system ensures stable high temperature for coating agent melting into liquid and mixing with uncoated powder. Heating and cooling of powder and coating agent are completed in one machine, which does not need independent cooling system. High utilization ratio of coating agent, high powder-coated rate, high activation grade, low energy consumption, and very few agglomerates in final coated product. The whole system is operated under negative pressure, no dust emission, and low labor intensity.
Pin Mill for Powder Coating
Pin type crushing disc, no screen structure, fast speed, large capacity and low heat generation. Single power or double power can be selected, the line speed can reach up to 240m/s, strong impact force and shear force, and the product 입자 크기 is fine. It is suitable for dispersing and deagglomerating It is suitable for continuous high-speed mixing for ultrafine powder and liquid, and particle surface 코팅 modification. It can be equipped with an 공기 분류기 to control the product fineness. Compact in structure, the mill is extremely easy to disassemble and clean.
결론
In conclusion, powder surface modification technology plays a crucial role in enhancing the properties and performance of powders for various industrial applications. By selecting the right modifiers and optimizing the modification process, it is possible to achieve improved dispersion, stability, and functionality, meeting the demands of modern materials and technologies. As innovation continues, surface modification will remain a key factor in advancing new materials and enhancing product performance.
에픽파우더
에픽 파우더는 초미립자 분말 산업 분야에서 20년 이상의 경력을 보유하고 있습니다. 초미립자 분말의 파쇄, 분쇄, 분급 및 개질 공정에 중점을 두고 초미립자 분말의 미래 개발을 적극적으로 추진하고 있습니다. 무료 상담 및 맞춤형 솔루션을 원하시면 지금 바로 문의하세요! 저희 전문가 팀은 고품질 제품과 서비스를 제공하여 고객의 분말 가공 가치를 극대화하기 위해 최선을 다하고 있습니다. 에픽 파우더 - 믿을 수 있는 분말 가공 전문가!