1. Synthetic method of perfluorinated rubber
Raw material selection: The main raw materials of perfluorinated rubber include tetrafluoroethylene (TFE), hexafluoropropylene (HFP) and so on.
Polymerization process: Perfluorinated rubber is usually prepared by emulsion polymerization or solution polymerization process.
Emulsion polymerization: polymerization by dispersing monomers in water in the presence of an emulsifier.
Solution polymerization: Monomers are polymerized in organic solvents.
Cross-linking reaction: The polymer chains are cross-linked by crosslinking agents (such as peroxides, bifunctional compounds, etc.) to form a three-dimensional network structure.
2. Production process of perfluorinated rubber
Raw material pretreatment: To ensure the purity and quality of monomers and crosslinkers.
Mixing and stirring: All kinds of raw materials are mixed in accordance with the formula ratio and fully stirred.
Temperature and pressure control: Precisely control the temperature and pressure during the polymerization process to ensure a smooth polymerization reaction.
Post-treatment: After the polymerization is completed, the unreacted monomers and solvents are removed by washing, drying and other steps.
3. Processing technology of perfluorinated rubber
Molding technology:
Die molding: The pre-prepared rubber mixture is placed in the mold and formed under heating and pressure conditions.
Extrusion molding: The rubber mixture is extruded into the desired shape of the product, such as pipes, profiles, etc.
Injection molding: The rubber mixture is injected into the mold through the injection machine and heated and pressurized to form.
Vulcanization process:
Thermal vulcanization: cross-linking rubber by heating to improve its physical properties and chemical resistance.
Microwave vulcanization: Use microwave radiation to accelerate the cross-linking reaction and shorten the vulcanization time.
Chemical vulcanization: Rapid vulcanization by chemical crosslinking agent.
Surface treatment:
Spraying and coating: The rubber surface is coated with a protective layer to improve wear resistance and corrosion resistance.
Electroplating and sandblasting: Improve surface roughness and appearance.
4. Post-treatment of perfluorinated rubber
Cutting and dressing: cutting and dressing of the formed rubber products as required.
Quality inspection: Through tensile test, hardness test, chemical resistance test and other methods to ensure that product quality meets the requirements.
Packaging and storage: The use of appropriate packaging materials and methods to prevent products from being contaminated and damaged during storage and transportation.
5. Material modification of perfluorinated rubber
Filler addition: By adding carbon black, silica and other fillers, improve the mechanical properties and wear resistance of rubber.
Reinforcing agent: Add glass fiber, polyamide fiber and other reinforcing agent to improve the strength and toughness of rubber.
Other modifiers: such as antioxidants, anti-ultraviolet agents, etc., improve the weather resistance and service life of rubber.
Sum up
The production and processing technology of perfluorinated rubber involves many links, from raw material selection, synthesis process, molding and vulcanization process, to post-treatment and material modification, each step needs to be strictly controlled to ensure the performance and quality of the final product. The continuous optimization and innovation of these technologies have promoted the wide application and market expansion of perfluorinated rubber in various fields.
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