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MPP-A65A

 

 

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MPP-A65A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Northstar Polymers, LLC

3444 Dight Avenue So.

Minneapolis, MN 55406

Tel: 612.721.2911

Fax: 612.721.1009

E-Mail:

info@northstarpolymers.com

 

 

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-A65A

 Data Sheet

 

This high performance 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, excellent performance in wet environments and good resistance to ultraviolet light.  This combination of features makes elastomers molded from MPP-A65A perfect for applications including patterns designed to transfer an image to wet surfaces including concrete and many custom applications.

 

  

Typical Physical Properties

 

 

Physical Property

 

ASTM #

Typical Value

Durometer Hardness:

D 2240

A65

Modulus (psi):

 

 

100% Elongation:

D 412

299

Tensile Strength (psi):

D 412

448

Ultimate Elongation (%):

D 412

147

Tear Resistance (pli)

 

 

Die C:

D 624

92

Split:

D 624

10

Taber Abrasion (mg loss):

D 4060

15

Bashore Rebound (%):

D2632

45

 

  

Prepolymer:

MPN-023

Curing Agent:

PBA-052

 

Typical Processing Conditions

Prepolymer:

MPN-023

Curing Agent:

PBA-052

Catalyst:

Included

Prepolymer Temperature (F):

Room Temperature**

Curing Agent Temperature (F):

Room Temperature**

Mold Temperature (F):

Room Temperature**

Pot Life*(minutes):

8 - 11

De-mold Time*** at 77F (hours):

3 - 4

Complete Cure Cycle*** at 77 F (hours):

24

 

 *        Defined as:  a 300 gram sample is too thick to pour.

**       Between 70 F and 90 F.  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 F 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-023                 PBA-052

                                                                  

Specific Gravity:                          1.173                     1.024

                                                                  

Equivalent Weight:                       226                        520

                                                                  

Stoichiometry:                            1.00                       1.00

                                                                  

NCO/OH Index:                            1.00                       1.00

                                                                  

Weight Pph:                                30.3                       69.7

                                                                  

Weight Ratio:                              1.000                     2.300

                                                                  

Weight Ratio:                              0.435                     1.000

                                                                  

Volume Pph:                                27.5                       72.5

                                                                  

Volume Ratio:                              1.000                     2.636

                                                                  

Volume Ratio:                              0.379                     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.