Surface modification is one of the necessary processing methods for fillers to change from general incremental fillers to functional fillers. It is also the main purpose of mineral filler surface modification.
The main effects of surface modification of mineral fillers include dispersion, viscosity reduction, filling, and interface mechanics.
Commonly used modification methods mainly include surface chemical modification method, coating modification method, and mechanochemical modification method.
Process characteristics of powder modification production line:
The powder surface retaliation rate is higher than 99.5%
No agglomeration of powder after modification
-Small amount of modifier added, high coating rate and low ignition loss;
-Continuous production process
-Preheating cycle temperature control energy saving system
-Spray coating of modifier, uniform powder surface coating
-Provide personalized solutions for surface treatment according to material characteristics and product usage.
-After surface modification, the material can realize dispersion, viscosity reduction, filling increase and interface mechanics.
-The system is easy to operate, with high degree of automation, high efficiency and low operating cost.
-It has a wide range of applications and can achieve ideal activation effects for various powders.
Principle of surface modification:
Powder surface modification is the use of physical, chemical, mechanical and other methods to treat the surface of the powder. According to application requirements, the physical and chemical properties of the surface of the powder material are changed purposely to meet the development of modern new materials, new processes and new technologies. The material enters the modifier from the feed system, and the preheated modifier is sprayed into the metering pump. The materials and agents are dispersed and mixed by the high-speed turbulent vortex air stream in the modifying machine, and at the same time, the high temperature of the system is used to complete the surface modification of the powder by the agent, and the finished product is collected by the negative pressure collection system at the back end.
In the field of polymer materials such as plastics, rubber, adhesives and polymer-based composite materials, non-metallic powder fillers, such as calcium carbonate, titanium dioxide, lithopone, zinc oxide, barium carbonate, mica, kaolin, talc , Quartz, wollastonite, asbestos, magnesium hydroxide, aluminum hydroxide, etc., the surface of the filler must be modified to enhance its compatibility with the matrix and dispersion stability to improve the mechanical properties and comprehensive properties of the material.
Specifications
|
model |
BHM－250 |
BHM－500 |
BHM－750 |
BHM－1000 |
|
Power(kw) |
11-18.5 |
30~45 |
55~75 |
90~110 |
|
Processing capacity (kg/h) |
60~700 |
200~1500 |
500~2400 |
800~3500 |
|
Host weight (kg) |
500 |
1100 |
2300 |
3000 |
