Is Viton resistant to solvents?
The Viton® A is a fluoroelastomer dipolymer comprised of vinylidene fluoride and hexafluropropylene. Provides good chemical resistance to petroleum products and solvents.
Is Viton compatible with ethanol?
Tests show that Viton has: 1. Excellent compatibility with fresh and contaminated biodiesel, and with ethanol.
What does polypropylene react with?
Polypropylene resins, like most polyolefin resins, are highly resistant to solvents and chemicals. They are appreciably affected by strong inorganic acids such as fuming nitric acid at room temperature and 98% sulfuric acid at 600C.
What is Viton used for?
A Viton™ seal is simply a seal manufactured from Viton™. These seals or gaskets are commonly used to seal leaks, valves, pumps and similar. Viton™ o rings are the most common type of seal, which we provide here at NES in a variety of sizes and profiles.
What can damage polypropylene?
Polypropylene will resist many organic solvents, acids, and alkalines. However, the material is susceptible to attack from oxidizing acids, chlorinated hydrocarbons, and aromatics.
What will dissolve polypropylene?
At elevated temperature, polypropylene can be dissolved in nonpolar solvents such as xylene, tetralin and decalin.
Is Viton A thermoplastic?
Another registered trademarked thermoplastic like Teflon is Viton. It is suitable for the same kind of temperatures as Teflon, but is more suited for chlorinated hydrocarbons and petroleum.
Is Viton A plastic?
Viton is a synthetic, floronated hydrocarbon (fluorocarbon) rubber product produced and trademarked by DuPont Performance Elastomers (Viton refers to all types of DuPont fluoro-rubbers). Different kinds of fluoroelastomers possess different swell behaviors, and their processing / compression set resistance.
Is Viton good for CO2?
Polymer backbones with carbonyl groups, C-F bonds and double bonds show elevated CO2 absorption. O-rings with these functionalities in their backbones (Viton, Kalrez, Teflon, and Silicone) showed the greatest loss of CO2 from sealed fixtures [5].
What is the chemical structure of Viton?
The main grades are A (Dipolymers of VF2/HFP), which has a fluorine content of 66%; B (Terpolymers of VF2/HFP/TFE), which commonly used for seals or gaskets and contains 68% fluorine; F (Terpolymers of VF2/HFP/TFE), which is used in oxygenated automotive fuels and has 70% fluorine content; and finally specialty types ( …
Is polyethylene resistant to chemicals?
Due to its non-polar nature, the polyethylene resins (PEs) have an exceptionally high resistance to chemicals and other media. It is not affected by aqueous solutions of salts, acids and alkalis.
What is the best solvent for polypropylene?
A good solvent for each of polyethylene & polypropylene is a mixture of TCB ” 1,2,4-trichlorobenzene” with few percent (0.015 %) BHT ” butylated hydroxytoluene”. Unfortunately, the temperature required for dissolution (of both polymers in the mixed solvent) is 160 oC.
What chemicals can dissolve polyethylene?
Both forms of polyethylene are highly resistant to acids, caustic alkaline liquids and inorganic solvents. This makes polyethylene useful as a container in laboratories for storing acids and bases. However some organic solvents such as benzene and acetone can dissolve polyethylene.
What is Viton ETP?
Viton ETP® is a tetra polymer of ethylene, tetrafluoroethylene (TFE) and perfluoromethylvinylether (PMVE). This chain structure is designed to give excellent resistance to base and polar fluids, while retaining good low-temperature flexibility and general fluid resistance comparable to FFKM materials.
What is the chemical compatibility of Viton?
Viton Chemical Compatibility. Viton® Chemical Compatibility Chart: Check the chemical compatibility of Viton® with various chemicals, solvents, alcohols and other products. A trademark of DuPont, Viton fluoroelastomer in general has a high temperature tolerance and chemical resistance rating.
What is the Viton™ chemical resistance guide?
The online Viton™ Chemical Resistance Guide provides basic information about elastomers and the properties that are important to consider when selecting them. This guide offers: Use-specific information, including each materials’ compatibility and suitability to work with 1,000+ chemicals
What is the difference between the different grades of Viton B?
Viton™ B-type family products can be blended with other Viton™ fluoroelastomer types to modify viscosity, enhance processability, and improve flow. The product is offered in two grades: The “2” versus “6” is based on a measure of the polymer’s viscosity, which determines rubber processability.
What are Viton™ B-type fluoroelastomers?
The Viton™ B-type family of fluoroelastomers are terpolymers used in applications where improved processing and rheology is needed. This can include: Solution coatings of fabrics, tanks, or chemical containers