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COCOON 333 is a strippable coating used for long-term storage of materials and equipment otherwise susceptible to corrosion. This product is mainly used for protection against alpha and beta radiation. COCOON 333 is used in hot cells, tunnels, laboratory hoods, table tops, etc. When contaminated, the coating is stripped from the surface, disposed of, and the surface resprayed.

OUTSTANDING FEATURES:

  • Cocoon 333 is applied to a variety of backings and surfaces to provide a complete sealing of the area against particle infiltration

  • Will seal out harmful elements to provide positive protection from contamination

  • Radiocontamination may be removed effectively using detergents and water

  • Effective reduction from 5 uCi down to 0.018 uCi using pre-wet and hose-dow

  • No rubbing or wiping necessary to remove radiocontaminants from surface of Cocoon 333

  • Approved for non-combustibility and found to be a fire retardant coating that will inhibit the progress of combustion

  • Extremely low moisture vapor transmission rates substantially reduce any passage of vapor through protected surfaces

SPECIFICATIONS:

Coating Type:     

Polyvinyl chloride solution

VOC:  

135 gms/liter

Pot Life: 

Single component

Shelf Life:      

12 months

Recommended Thickness:   

3 to 5 mils d.f.t. per coat

Coverage:    

1 gallon per 110 sq. ft. per coat x 5 coats

Packaging:

5 gallon pails

Color:   

Clear or White

 

APPLICATION:

 

Caution! READ THIS ENTIRE PRODUCT DATA SHEET BEFORE CONTINUING.

All surfaces must be dry, free of dirt, loose debris, oils, grease, or any substance that could contaminate or weaken the Cocoon. Close all penetrations and openings with a Cocoon Webbing coat. Webbing solution is made by mixing 1 part Webbing Agent to 3 parts Cocoon 333 and agitating with an air driven mixer until it becomes a thoroughly mixed, milky white solution.  Spray out    the webs until a homogenous covering has been achieved. The first application of Cocoon 333 over the webbing coat should be a light rapid pass to pro-vide the webs some strength and prevent them from breaking when the Cocoon coating is applied.  For more information concerning the Cocoon webbing coat, please refer to the Cocoon Webbing Agent data sheet.           

Mix ½ gallon of Cocoon Pigment into a 5 gallon pail of Cocoon 333 and mix thoroughly until all of the color is thoroughly dispersed.  Spray apply the pigmented Cocoon 333 using overlapping passes of an air atomized spray gun until 25 dry mils thickness is obtained.  Properly applied, the Cocoon coating should be free of any voids or pinholes.  Voids and pinholes must be repaired and re-sprayed.  For recommendations regarding equipment, contact our Technical Department.

LIMITATIONS:

Proper ventilation must be provided during application for effective drying of the coating, and all applicators must wear suitable respirators.

MAINTENANCE:

Damaged areas may be repaired by cleaning the surrounding surface and application of Cocoon 333 as described in the Application section.

PRECAUTIONS:

Read and understand the M.S.D.S. thoroughly. Make sure that all involved parties are familiar with the M.S.D.S. Cocoon, in its liquid state, is flammable; proper safety precautions against exposure to open flame, sparks, or other sources of ignition must be taken and strict safety rules enforced.

TECHNICAL DATA:

L.W.N.P.P. Decontaminability:    

99.964% Reduction

ASTM D-4256-89

Moisture Vapor Transmission:

0.04 perms      

ASTM E-96

Tensile Strength: 

1500 psi           

ASTM D-412

Elongation:      

200% 

ASTM D-412

Flexibility @ Low Temperatures:   

180° bend @ -35°C  

ASTM C-711

Shore ‘A’ Hardness:

70 degrees  ASTM D-2240

Viscosity:

55 kuASTM D-446

Total Solids:

29% (B.W.); 23%(B.V.)  ASTM D-1044

Flashpoint:

+0°F   FTMS 141A(M4294)

Fire Resistance

Self-extinguishingASTM D-568-56T

Dielectric Constant (1000cy/s @ 20°C,40% RH)

4.02ASTM D150-47T

Dissipation Factor (1000cy/s @ 20°C,40% RH)      

0.11ASTM D150-47T

Loss Factor (1000cy/s @ 20°C,40% RH)

0.44ASTM D150-47T

Volume Resistinity @ 480V D.C.

2.8x10(6)ASTM D27-49T

Dielectric Strength @ 60cy/s           

530 V/MLASTM D149-44

Arc Resistance (100 milliamperes)

13 secondsASTM D495-48T

 

 

 

 

NOTICE:  The information presented herein is based on tests and data that Andek Corporation believes to be reliable.  It is intended for use by technically qualified personnel at their own discretion and risk.  Since conditions of handling and use are beyond our control, we make no warranties, express or implied, and assume no liability in connection with any use of this information.  Nothing herein is to be construed as a license to operate or a recommendation to infringe any patent.

 

 

Copyright Andek Corporation 2005.  All rights reserved.