Magnolia Plastics Adhesives
Magnobond 6390

Plastics for the Space Age Since 1957


Magnobond 6390, Parts A & B

DESCRIPTION

Magnobond 6390, A and B is a two part epoxy compound designed to cure at room temperature yet give good values at elevated temperatures.

PROPERTIES 
          Mix Ratio:              100 parts by weight A
                                           to
                                  44 parts by weight B
          Cure Schedule:          l hour @ 180`F or 7
                                 days @ room temperature
                                 (overnight for handling
                                 strength).
          Shelf Life:             Part A = 6 months
                                 at 40`F or colder
                                 Part B = 6 months
                                 at 80`F or colder
          SPI Classification:     Part A: 4
                                 Part B: 4
          Specific Gravity:       A:  Compound 1.2
                                 B:  Curing Agent 1.0
                                     Mix - 1.2
          Viscosity:              A:  Compound - 296,000 cps (7/10)
                                 B:  Curing Agent - 272,000 cps (7/10)
                                     Mix - l64,000 cps (7/10)
          Pot Life:               3 oz. @ 77`F: 40 minutes

 Lap Shear Values - ASTM D1002
                                Cure
Temperature                7 days @  R.T.           1 hr. @ 180`F
     77`F                        4000                    4240
   180`F                        1631                    3570
   250`F                        1430                    2333
   300`F                        1222                    1627
   350`F                         718                     753
   400`F                         570                     528
  Preload Lap Shear strength at 180`F
Magnobond 6390 has been tested according to the preload procedure outlined in FMS 1048D. This procedure calls for curing panels at room temperature for several days. The specimens are then loaded to 600 PSI at ambient, heated quickly while maintaining stress and tested as soon as the bond line reaches 180`F.

This test measures the ability of an adhesive to develop high temperature properties as it is curing at room temperature. Results are as follows: 
              180`F                -                  1742 PSI
 


            DANGER                            FIRST-AID
--------------------------------     -------------------------
May cause severe irritation.         Eyes - Immediately flush
Do not get in eyes, on skin          eyes with plenty of water
or clothing.                         for at least 15 minutes.
Do not inhale vapors.                Get medical attention.
Wear rubber gloves & aprons.         Skin - Wash immediately
Use with adequate ventilation.       with soap and water.
Wash thoroughly after handling.      Clothing - Remove clothing
For industrial use only.             and wash before reuse.
Keep container closed.
Do not reuse this container.
Spec Sheet Dated: 01/09/90

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Updated: September 26, 1996