+++++MSB-D60A
Northstar Polymers, LLC
3444 Dight Avenue So.
Minneapolis, MN 55406
Tel: 612.721.2911
Fax: 612.721.1009
E-Mail:
Northstar Polymers, LLC is a member of Polyurethane Manufacturers Association.
Copy right reserved by Northstar Polymers, LLC 2000 - 2007. Northstar Polymer prohibits duplication of the contents of this web site for the purposes of public display and/or using on another web site without a written authorization by Northstar Polymers, LLC.
MSB-D60A
Data Sheet
This high performance polyester system is one of a family of polymer systems developed by Northstar Polymers for specific demanding work environments. Urethane elastomers molded with this system exhibit outstanding load bearing properties, high tear strength, high tensile elongation, and excellent oil and abrasion resistance. This combination of features makes elastomers molded from MSB-D60A perfect for applications including load bearing wheels and many custom applications. For long-term use in constant aqueous environments, consider a system from our polyether or hybrid product families.
Typical Physical Properties
Physical Property
ASTM #
Typical Value
Durometer Hardness:
D 2240
Shore D 60
Modulus (psi):
100% Elongation:
D 412
4840
300% Elongation:
D 412
5750
Tensile Strength (psi):
D 412
6125
Ultimate Elongation (%):
D 412
300
Tear Resistance (pli)
Die C:
D 624
950
Split:
D 624
461
Taber Abrasion (mg loss):
D 4060
85
Bashore Rebound (%):
D 2632
40
Typical Processing Conditions
Prepolymer:
MSA-030
Curing Agent:
BNA-005
Catalyst Type:
Amine
Catalyst Level:
Included
Prepolymer Temperature (ºF):
185
Curing Agent Temperature (ºF):
77
Mold Temperature (ºF):
212
Pot Life*:
45 Seconds
Gel Time** (minutes):
<2
De-mold Time*** 212 °F (minutes):
5-7
Complete Cure Cycle*** 180 °F (hours):
8
* Defined as: a 300 gram sample is too thick to pour.
** Defined as: no string of urethane develops when touched.
*** The use of catalyst will increase the rate of cure, but will decrease Pot Life.
Typical Mixing Ratio
Code Number: MSA-030 BNA-005
Specific Gravity: 1.196 1.017
Equivalent Weight: 300 45
Stoichiometry: 1.00 0.95
NCO/OH Index: 1.05 1.00
Weight Pph: 87.5 12.5
Weight Ratio: 1.000 0.143
Weight Ratio: 7.018 1.000
Volume Pph: 85.6 14.4
Volume Ratio: 1.000 0.168
Volume Ratio: 5.967 1.000
The actual mixing ratio at the operation may need to be adjusted based on the actual stoichiometric ratio calculation. For machine mixing, the mixing ratio calibration is recommended before the new batch of raw material is used.
Northstar Polymers, LLC
3444 Dight Avenue South
Minneapolis, MN 55406
Tel: 612.721.2911
Fax: 612.721.1009
E-Mail: info@northstarpolymers.com
Notice: All of the statements, recommendations, suggestions, and data concerning the subject material are based on our laboratory results, and although we believe the same to be reliable, we expressly do not represent, warrant, or guarantee the accuracy, completeness, or reliability of same, or the material or the results to be obtained from the use thereof, neither do we warrant that any such use, either alone or in combination with other materials, shall be free of the rightful claim of any third party by way of INFRINGEMENT or the like, and NORTHSTAR POLYMERS DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, OF MERCHANTABILITY and FITNESS FOR A PARTICULAR PURPOSE.