What Are the Processing Procedures of FEP Dispersion? - CHENGDU FLUORINCHEM NEW MATERIAL CO., LTD.

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FluorinChem's FEP dispersion liquid is a dispersion system made from perfluoroethylene-propylene resin. FEP is a high-performance fluoropolymer with excellent heat resistance, chemical resistance, weather resistance, electrical insulation, low coefficient of friction, and non-stick properties. FEP dispersion liquid is a liquid formed by dispersing FEP resin in the form of tiny particles in water or other solvents, making it convenient for use in coating, spraying, dipping, and other processes.

processing procedures of fep dispersion

Production Process of FEP Dispersion Liquid

Raw Material Preparation

Raw Material Selection: High-quality tetrafluoroethylene (TFE) and perfluoroalkyl vinyl ether (PAVE) are chosen as comonomers, and necessary additives such as initiators, emulsifiers, and stabilizers are prepared.

Raw Material Pretreatment: The raw fluoropolymer resin is purified to remove impurities, ensuring that the purity of the raw materials meets the requirements for the polymerization reaction.

Polymerization Reaction

Setting reaction conditions: Under specific temperature and pressure conditions, TFE and PAVE monomers, along with initiators, emulsifiers, and other additives, are added to the reaction kettle.

Polymerization Reaction: Under the action of the initiator, TFE and PAVE monomers undergo free radical polymerization to form fluoroethylene propylene FEP copolymer. This process requires strict control of reaction temperature, pressure, and time to ensure the smooth progress of the polymerization reaction and the quality of the product.

Dispersion Liquid Preparation

Selection of dispersant: Appropriate dispersants such as perfluorocarboxylate are chosen to disperse the FEP copolymer in the solvent.

Preparation of Dispersion Liquid: FEP copolymer is mixed with solvent and dispersant, and through stirring, homogenization, and other processes, the FEP copolymer is uniformly dispersed in the solvent in the form of tiny particles, forming the FEP dispersion liquid.

Subsequent Treatment

Filtration to Remove Impurities: The prepared FEP dispersion liquid is filtered to remove impurities and unreacted raw materials.

Viscosity adjustment: The viscosity of the FEP dispersion liquid is adjusted as needed to meet the requirements of different applications.

Storage packaging: The treated FEP dispersion liquid is stored in sealed containers and appropriately packaged to prevent contamination or degradation. It should be stored in a cool, dry, and ventilated place, avoiding direct sunlight and high temperatures.