ELASTOMERIC COATING MATERIALS
ELASTOMERIC COATING MATERIALS
BUNA NITRILE ELASTOMERIC COATING
Buna Nitrile is commonly known as Buna –N Nitrile (NBR) which is made up of Nitrile-Butadiene. This Elastomeric (Rubber) Coating Material has a higher hardness, strength, lower resilience, abrasion, heat, oil and fuel resistance, along with lower temperature flexibility. All of these elements can be active with increasing the acrylonitrile content in the application desired. Buna Nitrile is available in any color and is an excellent Elastomeric Coating Material choice for slasher, pull, drive, tension, deflector, idler or guide rolls along with most textile finishing and steel mill rolls.
Physical Properties:
Density: 1.15 - 1.35 g/cc
Mechanical Properties:
Hardness, Shore D: 30 - 95
Tensile Strength, Ultimate: 6.89 - 24.1 Mpa
Elongation at Break: 320%
100% Modulus: 0.003 Gpa
PVC Enriched Nitrile Elastomeric Coatings
Hi-Temp Silicone (SI) is an Elastomeric Coating Material used when high release characteristics are required in continuous temperatures up to 500
F. With its dielectric and compression set properties, Silicone rolls fit the bill. Silicone can be made to give fair oil resistance, but has poor Elastomeric Coating Material physical properties at room temperature. Silicone, with the composition of Dimethyly-Polysiloxane, is commonly used in laminating, extruder nips, plastic film conveying, specialty guide, release and spot waxing. As with many other Elastomeric Coating Materials, Silicone is available in any color.
Physical Properties:
Density: 1.15 - 1.35 g/cc
Mechanical Properties:
Hardness, Shore D: 30 - 95
Tensile Strength, Ultimate: 6.89 - 24.1 Mpa
Elongation at Break: 320%
100% Modulus: 0.003 Gpa
CARBOXYLATED NITRILE ELASTOMERIC COATING
Carboxylated Nitrile is an Elastomeric Coating Material also known as XNBR. This Elastomeric Coating Material is a modified Nitrile rubber. Being very similar to Nitrile, it holds outstanding abrasion resistance and many other properties. Carboxylated Nitrile compares favorably to liquid cast polyurethanes in hardness but its chemical resistance is superior in quality. This Elastomeric Material has been used successfully in hot acids or caustics solutions where even polyether polyurethanes would be acceptable.
Physical Properties:
Density: 1.15 - 1.35 g/cc
Mechanical Properties:
Hardness, Shore D: 30 - 95
Tensile Strength, Ultimate: 6.89 - 24.1 Mpa
Elongation at Break: 320%
100% Modulus: 0.003 Gpa
HI-TEMP SILICONE ELASTOMERIC COATING
Hi-Temp Silicone (SI) is an Elastomeric Coating Material used when high release characteristics are required in continuous temperatures up to 500 F. With its dielectric and compression set properties, Silicone rolls fit the bill. Silicone can be made to give fair oil resistance, but has poor Elastomeric Coating Material physical properties at room temperature. Silicone, with the composition of Dimethyly-Polysiloxane, is commonly used in laminating, extruder nips, plastic film conveying, specialty guide, release and spot waxing. As with many other Elastomeric Coating Materials, Silicone is available in any color.
Silicone Physical Properties:
Density: 1.17 g/cc
Silicone Mechanical Properties:
Hardness, Shore A: 40 - 90
Tensile Strength, Ultimate: 8.6 Mpa
Elongation at Break: 100 - 400 %
HYPALON ELASTOMERIC COATINGS
Hypalon is known commonly as Elastomeric Coating Material Chloro-sulfonated polyethylene (CSM). Hypalon materials have excellent ozone, weathering and chemical resistances. Hypalon rolls have excellent tear, cut, pressure, abrasion and heat resistance up to 325 F. Hypalon is available in any color and when combined with the chlorine or chlorosulfony groups prevents the crystallization that occurs on unmodified polyethylene. Hypalon is an Elastomeric Coating Material recommended for picking lines using oxidizing acids, laminating rolls and as corona treater rolls.
Hypalon Physical Properties:
Density: 1.45 - 1.6 g/cc
Hypalon Mechanical Properties:
Hardness, Shore A: 40 - 95
Tensile Strength, Ultimate: 21 Mpa
Elongation at Break: 200 - 500 %
ETHYLENE PROPYLENE (EPDM) ELASTOMERIC COATINGS
Elastomeric Coating Material Ethylene Propylene (EPDM) may be used with ketones, alcohols, glycols, most alkalis, some esters and chlorinated solvents. But one of the main, key features of Ethylene Propylene (EPDM) is that it is chemically saturated and therefore cannot be affected by steam. By being resistant to temperatures up to 325 F this Elastomeric Coating Material is recommended for film manufacturing, processing, laminating, drive, idler, pull, printing, release rolls and coating rolls to name a few. These Ethylene Propylene (EPDM) covers can be acquired in durometers of 40-80 Shore A.
HYDROGENATED NITRILE ELASTOMERIC COATING
Hydrogenated Nitrile, also known as HNBR is a relatively new Elastomeric Coating Material. Being identical in resistance to oils like Nitrile, it’s much more stable in certain chemical environments, such as ozone. A few outstanding Hydrogenated properties of this Coating Material include abrasion resistance and a high tear and tensile strength. It differs from other Coating Materials, such as Nitrile, when the hydrogenation is removed and causes un-saturation sites on the polymer backbone.
Physical Properties:
Density: 1.15 - 1.35 g/cc
Mechanical Properties:
Hardness, Shore D: 60 - 95
Tensile Strength, Ultimate: 6.89 - 24.1 Mpa
Elongation at Break: 320%
100% Modulus: 0.003 Gpa
NEOPRENE ELASTOMERIC COATING
Neoprene (CR) is an Elastomeric Coating Material available in all colors. Neoprene has moderate resistance to petroleum-based oils over a temperature of -65 to +250 degrees Fahrenheit, and a great resistance to weathering and ozone. Neoprene is also very flame retardant, along with a great resistance to cuts and low compression sets. Neoprene is an Elastomeric Coating Material great for the wringer, squeeze, pull, push, embossing, tannery couch rolls and most rubber roll applications in steel and aluminum mills.
Neoprene Physical Properties:
Density: 1.35 - 1.5 g/cc
Neoprene Mechanical Properties:
Hardness, Store A: 35 - 95
Tensile Strength, Ultimate: 28 Mpa
Elongation at Break: 100 - 800 %
VITON COATINGS
Viton is commonly called Fluoro-elastomer/Viton (FPM). The Hexafluoride propylene Vinylidene fluoride composition makes Viton a Material highly resistance to many solvents, oils, fuels, selected chemicals, abrasion, cut and offers heat resistance to 400 F. Like many other Coating Materials Viton is available in any color. Viton is commonly used in tower rolls, in tin lines for steel mills, as backup rolls for embossing of film and coating fabrics.
Viton Physical Properties:
Density: 1.85 - 2.3 g/cc
Viton Mechanical Properties:
Hardness, Shore A: 55 - 90
Tensile Strength, Ultimate 17 Mpa
Compression Set: 10%
SILICONE COATINGS
Silicone (SI) is used as a coating material when high-release characteristics are required in continuous temperatures to 500 F. This along with dielectric and compression set properties make this Coating Material compound fit the bill. Silicone can be made to give fair oil resistance, but has poor physicals properties at room temperature. This Coating Material, along with the composition of Dimethyly-Polysiloxane, is commonly used in laminating, extruder nips, plastic film conveying, specialty guide, release and spot waxing. As with many other Coating Materials, Silicone is available in any color.
Silicone Physical Properties:
Density: 1.17 g/cc
Silicone Mechanical Properties:
Hardness, Shore A: 40 - 90
Tensile Strength, Ultimate: 8.6 Mpa
Elongation at Break: 100 - 400 %
URETHANE COATINGS
Ebonite is very resistance to impact and abrasion due to its bone hard cover. It has great chemical resistance to mild acids and alkaline’s. It's ideally suited as a coating material, but not limited for felt and fabric carrying positions and guide positions. This Coating Material is designed to maximize doctor and cover life, thus it has good doctoring to eliminate stock buildup. Ebonite is available in black or tan.
URETHANE
Here at Electro-Coatings we design and manufacture our own urethane covers. Our Super 99 Urethane material is used as coating rolls for coils, metal decorating, varnishing and coating of paper, plastics and wood. Urethane also offers resistance to aliphatic, aromatic solvents and some esters. Being a Super 99, urethane covers have hardness ratings from 15-55 Shore A.
HARD URETHANE COATINGS
Hard Urethane is a practically indestructible covering or coating for tough applications. Hard urethane has an ultra-high cut, tear and abrasion resistance. With a durometer range form70 to 99 Shore A and Shore D, these Coating Materials are used on pinch, feed, conveyor pulleys, conveyor idlers, wheels, bridle rolls, oiling rolls, tension leveling roll and are great for contact rolls or belt sanders.
MILLABLE URETHANE COATING
Millable Urethane, produced from liquid cast technology, is thermoplastic resins, which is typically molded. Urethane is available in two basic chemical types: polyesters, which have excellent solvent and fuel resistance; Polyether, which works better when used with water, especially at high temperatures. One reason for using Millable Urethanes in roll applications is its extreme toughness and durability due its all-around hardness. It also can be used as an ester-type Urethane, which has resistance to aliphatic and aromatic-type solvents.
NATURAL RUBBER COATING
Natural Rubber is a compound 900 with high tensile strength, abrasion and pressure resistance along with superior memory. Natural Rubber, a good covering for papermaking and textile applications, can be used for press rolls, felt spreader rolls, wire return rolls, table rolls, lumpmaker rolls and bleaching squeeze rolls.
RUBBER (SBR) COATINGS
Elastomeric Coating Material Styrene butadiene rubber’s (SBR) coverings equal excellent abrasion resistance and high-tear strength. Characteristics include resistance to weak acids, alkalis and alcohols. There are many uses of Rubber (SBR) but the more common found are as pulley rolls, hold down rolls, pinch, dip wringer, deflector, sink and bridle rolls. Rubber (SBR) covers are available in durometers 50-90 shore A.
NYLON AND TEFLON COATINGS
Nylon and Teflon are very common Coating Materials. Nylon also has a superb resistance to corrosion from water and a variety of other solvents, while Teflon is more common than Nylon and offers a wide variety of constructions from Electro-Coatings. We can customize any Teflon coating application from steel core covers all the way to high release, temperature-resistant coverings. Just contact your Electro-Coatings rep for further details.
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