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Pvdf_lining.pdf

Description
Duro-Bond PVDF is a laminated sheet lining consisting of a layer of polyvinylidene fluoride (PVDF) resin laminated
onto a layer of fabric cloth or vulcanized chloroprene rubber backing that is readily bonded to steel, concrete, or FRP
substrates. PVDF is a partially fluorinated thermoplastic resin that is melt flow processible. Duro-Bond PVDF sheet
lining is available in thicknesses of 60 mils (1.5 mm), 90 mils (2.3 mm) and 118 mils (3.0 mm).

Duro-Bond PVDF is used as a vessel lining material where severe corrosion conditions are present. Typical
applications include towers, scrubbers, process vessels and high purity acid and ultra pure water equipment.
In addition to providing high purity and corrosion resistance, Duro-Bond PVDF also resists the effects of abrasion and
high temperatures. Because of its unique combination of properties, great strength, superior chemical, corrosion, and
abrasion resistance, and a wide temperature range, Duro-Bond PVDF is frequently the most cost-effective material of
choice for corrosion control and high purity in the chemical, semiconductor, transportation, pharmaceutical, metals,
food, paper and electric power industries.
Advantages
Duro-Bond PVDF is noted for its good resistance to organic and inorganic acids, aliphatic and aromatic hydrocarbons,
alcohols and certain halogenated, e.g. chlorinated solvents. It is not attacked by the halogens except nascent chlorine.
PVDF is non-toxic and may be used according to the Food and Drug Administration for food packing and for foodcontact use.
Duro-Bond PVDF can be bonded to various substrates and can be installed by experienced technicians in the shop or
in the field.
Among its other outstanding characteristics are high natural mechanical strength, high dielectric strength, excellentabrasion and stain resistance, and good thermal stability at both reduced and elevated temperatures.
Service Temperature
PVDF is known for its resistance to halogens, petrochemicals, and most acids and bases in a temperature range from -
60 o C to 145 o C (-80 o F to 290 o F). When bonded to a substrate, the maximum recommended service temperature
for Duro-Bond PVDF sheet lining is 110 o C (230o F) on a continuous basis, 120 o C (250 o F) on an intermittent basis.
Chemical Resistance
The information listed may be considered as a basis for recommendation, but not as a guarantee, unless sold and
installed by ELECTRO CHEMICAL ENGINEERING & MFG. CO. For resistance of Duro-Bond PVDF to chemicals
not listed, contact our Engineering Department at:
inquiry@electrochemical.net or 1-800-235-1885.
Key to Rating:
1 -
Little or no effect
2 - Some effect, but not indicative of impaired serviceability
3 - Noticeable effect, although possible serviceability
NR - Not Recommended.
BLANK - Information has not been determined.
Chemical
* Not recommended in anhydrous conditions as in "Friedel-Crafts" and alkylation type reactions.
Chemical
Chemical
Chemical
Glass Cleaning (Sodium Dichromate/Sulfuric) Chemical
Chemical
Chemical
** Rating does not apply in processes where mercury amalgam is formed.
Chemical
Physical Properties
Clear to translucent, depending on thickness Application
1. The surface to be lined is properly cleaned and grit blasted to a white metal finish to provide a suitable surface for bonding. (See Electro Chemical Technical Bulletin #1, “Specification for Welded Steel Tanks, Stacks, Ducts orOther Fabricated Equipment for Protective Linings and/or Coatings”.) The Duro-Bond PVDF laminate is cut into panels to cover the entire area to be lined with a minimum amount of
joints to be welded.
The panels are then cemented into position and the seams welded with PVDF rod and PVDF cap strip using athermoplastic welding gun.
Method of Testing
All lined surfaces are visually inspected for surface defects. Any special dimensional tolerances required after liningare also checked.
All lined areas are then spark tested for pinhole leaks using a dielectric spark tester adjusted to 10,000 volts. Thetester is moved constantly and quickly over the lining surface to prevent a burn through.
Repair Procedures
Duro-Bond PVDF sheet lining can be shop or field repaired. The repairs to defective or damaged areas in the sheet
lining are accomplished by cutting out the faulty area, grinding or grit blasting the substrate surface, preparing a piece
of sheet of the same dimension, cementing it into position and subsequently welding the joints as described under
Application. The repaired area is then inspected and spark tested to insure lining integrity.
Additional Information
For additional technical or safety information, contact us at 1-800-235-1885, www.electrochemical.net, orinquiry@electrochemical.net.
Electro Chemical Engineering & Manufacturing Co.
Electro Chemical Engineering & Manufacturing Co.
The data provided herein falls within the normal range of product properties, but they should not be used to establish specificationlimits nor used alone as the basis of design. Electro Chemical Engineering & Manufacturing Co. assumes no obligation or liability for any advice furnished by it or for results obtained with respect to these products. All such data and advice is provided gratis andBuyer assumes sole responsibility for results obtained in reliance thereon.

Source: http://electrochemical.net/wp-content/uploads/2011/11/pvdf_lining.pdf

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