PVDF NMP Solution Disperser Polyvinylidene Fluoride NMP Homogenizer

PVDF NMP Solution Disperser Polyvinylidene Fluoride NMP Homogenizer

PVDFIt is the abbreviation for polyvinylidene fluoride,PVDFPolyvinylidene fluorideMMP(usually referring to modified or specific solvent formulations, such asN-Methyl pyrrolidoneNMPBasic solutions have important applications in the new energy industry, especially inApplications in lithium-ion batteries:

(1)Diaphragm coating

Function:PVDFSolution coating on polyolefin membranes (such asPE/PP）Surface, enhanced diaphragm:

Advantages: Thermal stability, preventing short circuits caused by high temperature shrinkage.

Electrolyte affinity improves liquid absorption rate and ion conductivity.

Mechanical strength reduces the risk of dendrite piercing.

(2) Electrode binder

Function:PVDFSolution as positive electrode (such as lithium cobalt oxide)LCOLithium iron phosphateLFPThree element materialsNCM/NCA）Adhesive with negative electrode (such as graphite, silicon carbon), adhering active material, conductive agent (such as carbon black) to current collector (aluminum foil)/On copper foil.

Advantages: Excellent chemical stability and electrochemical inertness, resistant to electrolytes (such as carbonate solvents).

High bonding strength ensures that the electrode structure does not detach during charge and discharge cycles.

Moderate swelling property, conducive to electrolyte infiltration.

PVDFofNMPSolution:

(1)Composition ratio:

Common Proportions:PVDFquality score5-10%(such as8% PVDF + 92% NMP）.

(2)Solubility:

PVDFInNMPMedium dissolution requires heating (usually50-60℃) and stir for several hours until fully transparent.

NMPyesPVDFIdeal solvent (polar non proton, strong hydrogen bond acceptor ability).

traditionPVDFSolution preparation methods (magnetic stirring, planetary stirring, ultrasonic dispersion, etc.) still have applications in laboratories and small-scale production, but they have low efficiency(Generally required)1-3Hour)Poor uniformity(prone to agglomeration, requiring additional filtering)Difficult to quantify high solid content(Solid content generally<)8%）Wait for the question.

Sijun Machinery relies on German technology and independently develops and designs an ultra high speed grinding and dispersing machine specifically designed for high viscosity and difficult to disperse materials,fromOrganic combination of colloid mill and disperserGMSD2000series.

The first level consists of three-level sawtooth protrusions and grooves with increasing precision. The stator can be infinitely adjusted to the desired distance between it and the rotor. Under enhanced fluid turbulence, grooves can change direction at each stage.

secondLevel byDispersing blade head of fixed rotorform. Due to the high tangential velocity generated by the high-speed rotation of the rotor and the strong kinetic energy brought by high-frequency mechanical effects, the material is subjected to strong mechanical and hydraulic shear, centrifugal extrusion, liquid layer friction, impact tearing, and turbulence in the narrow gap between the stator and rotor,acceleratedPVDFThe rapid dissolution makes the solution more uniform and delicate.

Model:

The upper limit processing capacity in Table 1 refers to the measurement data of the medium being "water".

The processing capacity depends on the viscosity, consistency, and final product requirements of the material.

Accurate parameters must be provided for conditions such as high temperature, high pressure, flammability, explosiveness, corrosiveness, etc., in order to facilitate selection and customization.

The data in this table does not match due to technical changes or customization. The correct parameters are based on the actual product provided.

This series of models has short-range feeding capability and no self-priming function, requiring the use of high-level feeding; When the viscosity or solid content of the material is high and cannot be fed and transported normally, a pressure or conveying pump must be selected for feeding or conveying, and the pressure and flow rate of the conveying pump should match the selected model.

PVDF NMP Solution Disperser Polyvinylidene Fluoride NMP Homogenizer