Modified machine is the inevitable outcome of the development of modern high technology, new material, widely used in the nonmetallic mineral filler or pigments such as plastic, rubber, adhesive and other modern polymer materials, polymer matrix composites, functional materials and coatings industry, mineral powders after modification, not only can greatly improve the compatibility of inorganic mineral filler and organic polymer, and improve the interface bonding strength, reinforced material mechanical strength and its comprehensive performance, can also greatly improve powder filler filling amount, reduce production cost, at the same time some special physical and chemical properties can be assigned to products.However, most of the ordinary non-metallic mineral materials and organic polymer matrix interface properties are different, poor compatibility, direct or large amount of filling will lead to the deterioration of some mechanical properties of the material.Therefore, the surface modification of inorganic mineral fillers is very important.Modified machine unique design of modified cavity with modified reconciliation function, suitable for all kinds of modified materials, such as the heavy, light calcium carbonate, kaolin, talc, wollastonite, quartz powder, mica, silica, titanium dioxide, zinc oxide, aluminum oxide, magnesium hydroxide and barium sulfate, illite and pyrophyllite, tremolite etc, all have very good effect on the surface modification.
Performance characteristics of modified machine
1, The unit can run continuously, large capacity, suitable for various scale of industrial production.
2. The utilization rate of modified agent is high, the dosage is small, the powder coating rate and activation index are high, and the energy consumption is low.
3, the equipment has the function of modification and breaking, suitable for all kinds of fineness of materials, small false specific gravity, bulk density ratio of materials such as white carbon black, mica powder, talcum powder has a unique modification activation effect.
4, the powder and the agent high-speed gas-solid phase eddy current mixing operation, high modification efficiency, basically do not destroy the original particle shape of the powder.
5, the material negative pressure operation, good sealing, dust does not leak, no pollution, good operating environment, low labor intensity.
6. The heating and cooling is completed by one machine, without separate heating and cooling system, simplifying the operation.
7, Independent fluid and non-fluid dosing system, continuous and stable uniform.
Structure composition of modified machine
1, hopper: material from the bin directly into the hopper, material moisture content should be less than 0.5%.
2, Feeding device: the use of double screw feeding, speed adjustable, can ensure the stability of material flow.
3, temperature-controlled dosing system: temperature control, can be arbitrarily set the melting temperature of pharmaceutical, suitable for all kinds of solid liquid form of modified pharmaceutical.
4. Modified host: the modified host is composed of three product shape modified cylinder, compact structure, high efficiency of modification, stable and reliable operation.
Matters needing attention in the work of modifying machine
1, the influence of impurities, non-metallic powder impurities are mainly raw materials of the original impurities and impurities produced in the process of processing, in the control of raw material impurities at the same time, we should also consider the problem of processing equipment pollution and impurity.
2. The selection of surface modifier of the modifier is very important in the surface modification of non-metallic powder.
The working principle of
The working principle of modification machine
The powder raw material is sent to the atomization chamber above the main machine through the feeding conveying system. In the conveying process, the powder is heated and dried by the heating device specially designed by the feeding conveyor. At the same time, the solid modifier is heated and melted into a liquid state in the special heating container and then sent to the atomization chamber through the conveying pipeline.
The atomizing chamber is provided with two groups of nozzles, one of which has four nozzles distributed on the wall of the atomizing chamber according to different positions, whose function is to blow away the powder materials sent by the conveying system into a fog shape.At this point, the raw material and the modification machine form a fog.Due to the two sets of nozzles from different directions of the air flow, can be fully mixed, that is, into the main engine.
The main engine is composed of a high-speed rotating spindle, mixing rod, impact hammer, etc. The atomized materials entering the main engine are subjected to impact, friction, shear and other effects under the high-speed mixing of the stirring rod, so that the powder particles and the modifier are fully contacted and mixed, and the powder materials are fully coated and modified.
The modified material is sent to the finished product collection bin by the screw conveyor. In the process of airflow transportation, the excessive heat in the material is absorbed by the airflow, and the finished product is removed out of the room after being removed by the cloth bag dust collector. After entering the collection bin, the finished product can be reduced to the temperature that can be stored.
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