Viton is a fluoroelastomer introduced in 1957 for use in the aerospace industry. It has excellent thermal stability and chemical resistance, being usable between -30°C to 280°C. Viton exists as co, ter, and tetra polymers and is commercially available as granular powder or dispersions. It has many applications due to its heat resistance, strength, and resistance to chemicals, hydrocarbons, weathering and oxidation. Research has shown Viton can act as a thermally stable binder and be used to coat magnesium particles to increase their oxidation resistance.

1. Fluoroelastomer/
Viton
M. FAHEEM MAQSOOD
14MME-S1-314
5TH SEMESTER (MORNING)
MME (CEET) UNIVERSITY OF PUNJAB

2.  Fluoroelastomers (Viton) are fluorine containing high performance rubber.
 Firstly introduce in 1957 for Aerospace industry by DuPont.
 It has good Thermal stability and chemical resistivity.
 Use able between -300C to 2800C.
Monomers use in the preparation of VITON
 We use Emulsion and Suspension
polymerization for the production of Viton
o Cross linking of different mer units is use for the
production of different grades of Viton.
o Register trade work by DuPont now Chemours
Courtesy by DuPont Polymers and chemicals

3. Viton fluoroelastomers Families Monomer
compositions and Grades
 Viton fluoroelastomer exist as Co, Ter and
Tetra polymer.
 Viton commercially available in the form
of Granular powder and Disperse grade.
Properties
1) Heat resistance
2) Chemical resistance (acid and basic)
3) Compressive and Tensile strength
resistance
4) Swell, Permeation and degradation
resistance
5) Density over 1800 Kg/m3
6) Low temperature performance
7) Resist hydrocarbons (Oil/ Fuel)
8) Excellent weather and ozone resistance
9) Good Radiation Resistance
10) Self Extinguishing or Non-Burning in Air
There are different
cross linking
process use in the
preparation of Viton
 Diamine Cures
 Dihydroxy Cures
 Triazine-Peroxide Cures
 Post Cure
Courtesy by DuPont Polymers and chemicals

4. Techniques
a) Compressional Moulding
b) Transfer Moulding
c) Injection Moulding
d) Extrusion
e) Calendering
Applications
 Use in sealing applications (oil, chemical)
 Sealant paste also use
 Packaging of food and gloves making
 Viton pipes, sheet and sponge rubber pipe
 In petrochemical industry
 In aerospace industry
 In automobile industry
 In nuclear reactors
 In house hold utensils

5. Researches:
1.Statical optimization of
microencapsulation process for
coating of magnesium particles
with Viton polymer.
Highlights:
 By solvent method a surface of
magnesium particles particles is
modified with Viton.
 FTIR, SEM and map analysis
techniques are employed to
characterize the coated particles.
 An energetic polymer is used to
modify the surface of the
magnesium.
 The results showed that the coating
of magnesium powder with Viton
leads to a higher resistance of metal
against oxidation.
Reference: S.Mehdi, saad babaee, f.shamsi
Vol= 349, year = 15 sep 2015

6. 2. Thermal behavior and decomposition
kinetics of Viton A bonded explosives
containing attractive cyclic nitramines
Highlights:
 This article revolves on effect of binder Viton A.
 The effect of Viton A binder on thermal behavior of
cyclic nitramines been observed by using non
isothermal methods.
 Viton A can behave as a thermo stable polymer.
 As a thermo stable polymer Viton A can inhibit the
initial auto catalysis effect of cyclic nitramines.
 TGA analysis was also done during this article
formulation.
Reference :
Qi-Long Yan, Svatopluk Zeman,
Ahmed Elbeih.
Year =2013, vol. 562

7. Conclusions
 Fluoroelastomers are thermally high performing polymer.
 It is majorly use for O-rings, seals and other rubber items.
 It is compactible with hydrocarbons but incompatible with ketone and organic acids.
 At very high temperature (above 3000C) it decompose and may release HF.