Material characteristics - Technical Specifications

 

Technical Specifications :
The stated average physical properties listed below are values obtained in accordance with accepted test methods.Vibramat is manufactured without the use of CFC, asbestos,clorine & fiber .

Average Physical Properties
Test Method
Physical Appearance : Black, textured open / closed cellular structure on one surface and a cross-linking, pressure sensitive acrylic based adhesive coating on the obverse side.Adhesive coated side has a smooth surface.
 
Density : 4.76 lb/ft3 (76.5kg/m3)
( ASTM D 1667)
Thermal Conductivity ( K value ) : 0.04W/m°C
Mean Temp. @ 10°C.
( ASTM C518)
Temperature Range : -40°F to 221°F (-40°C to 105°C)
   
Thermal Stability (% shrinkage) : 7 days, 200°F: 4.5 rating
                                                7 days, 220°F: 5.5 rating
(ASTM C534)
(ASTM C534)
Water Absorption : 4.37% W/W
(ASTM C272)
Water Vapor Permeance : 1.63 Perms, 9.33x10(-8) g/Pa.s.M2
(ASTM E96 )
Resistance :   Ultra Voilet ( UV ) - Good
      Weather - Good
    Ozone - Excellent
    Mildew - No fungal growth
    Chemical - Good
( ASTM D1171)
Flexibility : Excellent
 
Elongation : Excellent
 
Odour : Negligible
     
Fire Classification : Self extinguishing
                             Flame spread : Class 1 rating
( UL94, STM D635-91, Bomba Cert .)
(BS476, part 6 & & SIRIM )
   

Sound Absorption Coefficients :
0.18 @
100 Hz
 
0.13 @
125 Hz
 
0.11 @
160 Hz
 
0.12 @
200 Hz
 
0.12 @
250 Hz
 
0.13 @
315 Hz
 
0.18 @
400 Hz
 
0.25 @
500 Hz
 
0.41 @
630 Hz
   
0.59 @
800 Hz
 
0.59 @
1000 Hz
 
0.49 @
1250 Hz
 
0.45 @
1600 Hz
 
0.35 @
2000 Hz
 
0.37 @
2500 Hz
 
0.34 @
3150 Hz
 
0.27 @
4000 Hz
 
( Reverberation Room Method, mounting A, ASTM C423-90a )

Source : Acoustic Lab National University of Singapore

Sheet Sizes :    
Norminal Thickness
Size Per Sheet
Product Ref. No
3/8 inch ( 9mm ) 2 ft x 4 ft ( 0.61m x 1.22m )
B3/82X4
  3 ft x 4 ft (0.91m x 1.22m)
B3/83X4
  6 ft x 4 ft (1.83m x 1.22m )
B3/86X4

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