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Bayflex® WR-80

Polyurethane (Polyether, MDI)

Supplied by Bayer MaterialScience LLC

The technical datasheet with complete property values for Bayflex® WR-80 is available to members of the Prospector Plastics Database.
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Product Description
Bayflex WR-80 is a solid elastomer which has a flexural modulus of 10,000 psi (69 MPa)* at room temperature. It is processed on reaction injection molding (RIM) equipment and is used for rollers, gaskets, and encapsulated windows. This system combines rapid demold times, excellent integrity at mold, improved release characteristics and outstanding physical properties.

The Bayflex WR-80 system was developed to add a weather-resistant grade to our range of window encapsulation systems. The weatherability of this system eliminates the need for post-painting or in-mold coatings. This product is available only in black. As with any product, use of the Bayflex WR-80 system in a given application must be tested (including but not limited to field testing) in advance by the user to determine suitability.

Bayflex WR-80 is a formulated RIM system supplied as two reactive liquid components. Component A is a diphenylmethane diisocyanate (MDI) prepolymer. Component B is a polyether polyol.
General  
Material Status 
  • Commercial: Active
Availability 
  • North America
Features 
  • Good Mold Release
  • Good Weather Resistance
  
Uses 
  • Gaskets
  • Rollers
  • Windows & Doors
Appearance 
  • Black
Forms 
  • Liquid
Processing Method 
  • Reaction Injection Molding (RIM)
Physical
Nominal Value
Unit
Test Method
Specific Gravity
 
 ASTM D1622
Water Absorption (24 hr)
%
 Internal Method
Water Absorption - 240 hr
%
 Internal Method
Mechanical
Nominal Value
Unit
Test Method
Flexural Modulus
     ASTM D790
-22°F
psi
  
73°F
psi
  
149°F
psi
  
Elastomers
Nominal Value
Unit
Test Method
Tensile Strength (Break)
psi
 ASTM D412
Tensile Elongation (Break)
%
 ASTM D412
Tear Strength 2
lbf/in
 ASTM D624
Hardness
Nominal Value
Unit
Test Method
Durometer Hardness (Shore A)
 
 ASTM D2240
Thermal
Nominal Value
Unit
Test Method
Low Temperature Brittleness (-58°F)
 
 ASTM D746
Aging
Nominal Value
Unit
Test Method
Weatherometer Aging - Delta E 3
 
 SAE J2527
Thermoset
Nominal Value
Unit
Test Method
Thermoset Components 4
      
Part A
 
  
Part B
 
  
Shelf Life (86°F)
wk
  
Demold Time
min
  
Additional Information
Nominal Value
Unit
Test Method
Water Immersion, Length Increase
%
 Internal Method
Part A
  • Type: Isocyanate
  • Specific Gravity @ 25°C: 1.21
  • Viscosity @25°C: 700 mPa-s
  • Flash Point PMCC: 213 °C

Part B
  • Type: Polyol
  • Specific Gravity @ 25°C: 1.02
  • Viscosity @25°C: 1400 mPa-s
  • Flash Point PMCC: 184 °C

Molding Parameters
  • Material Temperature: 32 to 42 °C
  • Mold Temperature: 60 to 70 °C
Related Terminology
Product names can be difficult to match. You may have searched any one of these terms to find this product: Bayflex® WR-80, Bayflex WR80, Bayflex® , Bayflex, BayflexWR80, WR, WR-80, WR80, WR:80, WR/80, WR+80, WR_80, WR 80, Polyurethane, Polyurethane (Polyether, MDI), Polyurethane Polyether MDI, PUR-Ether/MDI, PUREtherMDI, PUR-Ether:MDI, PUR-Ether+MDI, PUR-Ether-MDI, PUR-Ether_MDI, PUR-Ether MDI, PUR:Ether/MDI, PUR/Ether/MDI, PUR+Ether/MDI, PUR_Ether/MDI, PUR Ether/MDI, PUR, Bayer, PolyurethanePolyetherMDI, PUREther_MDI, PUREther MDI, PUR_EtherMDI, PUR EtherMDI, 80WR
Features
Features may also be described by the following terms: Good Mold Release, Easy Release, Good Demolding, Good Weather Resistance, Weather Resistant.
Uses
Uses may also be described by the following terms: Rollers, Roller, Gaskets, Gasketing, Windows & Doors, Windows and Doors.
Notes
1Typical properties: these are not to be construed as specifications.
2Die C
3ASTM G155, cycle 7 @ 2500 kJ/m², Atlas CXW Open Flame
4105 Index
 
IDES
Copyright © 2012 IDES
The information presented on this datasheet was acquired by IDES from the producer of the material. IDES makes substantial efforts to assure the accuracy of this data. However, IDES assumes no responsibility for the data values and strongly encourages that upon final material selection, data points are validated with the material supplier.