MatWeb - Material Property Data Advertise with MatWeb!     Register Now
Data sheets for over 180,000 metals, plastics, ceramics, and composites.
MatWeb - Material Property Data HOME  •   SEARCH  •   TOOLS  •   SUPPLIERS  •   FOLDERS  •   ABOUT US  •   FAQ  •   LOG IN    
Recently Viewed Materials (most recent at top)  

Login to see your most recently viewed materials here.

Or if you don't have an account with us yet, then click here to register.

  Searches:   Advanced  | Category  | Property  | Metals  | Trade Name  | Manufacturer  | Recently Viewed Materials
  

Rulon Bearings

Northstar Polymers VEF-41 Viscoelastic Foam Formulation
Categories: Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane Foam, Unreinforced

Material Notes: Viscoelastic foam has a very unique recovery property and very low compression deflection property. When the foam is compressed by a hand it can leave imprint of the hand, and then it slowly recovers to the original shape. Viscoelastic foam has been used in a variety of applications such as toys, pillows, mattresses, and many other unique applications.

The components can be processed at room temperature, and the pot life is 30 to 40 seconds. For short runs of smaller parts, it is possible to hand mix and pour to make foam block. Comparing to more common polyester base foam, this formula remain softer at a lower temperature range.

Information provided by Northstar Polymers.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Processing PropertiesMetricEnglishComments
Processing Temperature 21.1 - 32.2 °C70.0 - 90.0 °FPrepolymer Temperature
 21.1 - 32.2 °C70.0 - 90.0 °FCuring Agent Temperature
Mold Temperature 37.8 - 43.3 °C100 - 110 °F
Cure Time  30.0 - 40.2 min
@Temperature 43.3 °C
0.500 - 0.670 hour
@Temperature 110 °F
De-mold Time
 1440 min
@Temperature 25.0 °C
24.0 hour
@Temperature 77.0 °F
Complete Cure Cycle
Pot Life 0.500 - 0.670 min0.500 - 0.670 min
 
Descriptive Properties
Curing AgentPPF-028
Mixing Time10-20
PrepolymerMSA-018
Weight Ratio1:4.016Prepolymer to Curing Agent Ratio

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

Users viewing this material also viewed the following:
Covestro Bayfit® SA Polyurethane Sound Absorbing Foam, Viscoelastic
Lendell Manufacturing SRF-1 Foam
Overview of materials for Aluminum Alloy
Covestro Bayfit® Low Density Polyurethane Flexible Molded Foam,
Lendell Manufacturing Prepol Pre Polymer

PNORTH901 / 162617

Aluminum Castings

Please read our License Agreement regarding materials data and our Privacy Policy. Questions or comments about MatWeb? Please contact us at info@matweb.com. We appreciate your input.

The contents of this web site, the MatWeb logo, and "MatWeb" are Copyright 1996-2025 by MatWeb, LLC. MatWeb is intended for personal, non-commercial use. The contents, results, and technical data from this site may not be reproduced either electronically, photographically or substantively without permission from MatWeb, LLC.