eFunda Polymers: Properties of Vinyl polymers and copolymers {poly(vinyl-butyral), molding and extrusion compounds, flexible}
engineering fundamentals Polymer Material Properties
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Vinyl polymers and copolymers
 
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State: poly(vinyl-butyral)
Application: molding and extrusion compounds, flexible
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Tensile Strength (MPa)   3 - 21 at break   D638
Elongation at break (%)   150 - 450     D638
Hardness   10 - 100  Rockwell A   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted
 highly variable     D256A

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  1.05   D792
Water Absorption (% weight increase)  1 - 2  after 24 hrs D570
Dielectric Strength (V/mil);
1/8" thick specimen unless noted
  350   D149

 Processing Properties Conditions
Type ASTM
Melting Temperature (ºC)   49  Tg, amorphous  
Processing Temperature (ºC)  138 - 160  compression molding  
 121 - 171  injection molding  
Molding Pressure (MPa)   3 - 21    

Suppliers
Solutia, Inc. St Louis, MO   
Union Carbide Corp. Danbury, CT  800-335-8550
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