MPP-A30A
MPP-A30A
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.
MPP-A30A
Data Sheet
This room-temperature-curable polyether 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 fine resolution of mold details, good performance in wet environments and good resistance to ultraviolet light. This combination of features makes elastomers molded from MPP-A30A perfect for applications including patterns designed to transfer an image to wet surfaces including concrete and many other custom applications.
Typical Physical Properties
Physical Property
ASTM #
Typical Value
Durometer Hardness:
D 2240
30 A
Tensile Strength (psi):
D 412
260
Ultimate Elongation (%):
D 412
550
Tear Resistance (pli)
Die C:
D 624
40
Split:
D 624
20
Taber Abrasion (mg loss):
D 4060
1880
Typical Processing Conditions
Prepolymer:
MPN-055
Curing Agent:
PBA-044
Catalyst:
Included
Prepolymer Temperature (ºF):
Room Temperature**
Curing Agent Temperature (ºF):
Room Temperature**
Mold Temperature (ºF):
Room Temperature**
Pot Life*(minutes):
10 - 15
De-mold Time*** at 77ºF (hours):
3 - 4
Complete Cure Cycle*** at 77 °F (hours):
16
* Defined as: a 300 gram sample is too thick to pour.
** Between 70 ºF and 90 ºF. Higher temperature results faster curing pattern
*** The use of catalyst or higher mold temperature will increase the rate of cure. Mold may needed to be heated to 100 - 120 ºF for casting a very thin layer and/or using a heat-absorbing material for mold or inserts.
Typical Mixing Ratio
Prepolymer (A) Curing Agent (B)
Code Number: MPN-055 PBA-044
Specific Gravity: 1.077 1.024
Equivalent Weight: 554 443
Stoichiometry: 1.00 1.25
NCO/OH Inde 0.80 1.00
Weight Pph: 50.0 50.0
Weight Ratio: 1.000 1.000
Weight Ratio: 1.000 1.000
Volume Pph: 48.7 51.3
Volume Ratio: 1.000 1.051
Volume Ratio: 0.951 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.