EH-101: Fast Epoxy Hardener




Product Description

EH-101 is an aliphatic epoxy hardener that is compatible with both ‘DR’ and ‘ER’ series resin systems.  Hardener has no free-phenols

and has excellent room temperature properties.


Mix resin and hardener thoroughly at specified ratio.  Resin can be heated slightly to lower viscosity.  Do not expose resin or hardener

to excessive moisture conditions until fully cured.  Post-cure resin to 160oF to achieve maximum cure and composite strength.  In cases

of free standing post-cures, the part should be heated slowly

(20-30oF per 30 minute steps) to prevent warpage.


• Small hand laminated parts requiring less than 1

   hour working time

• Fairing, bonding and joining composite parts

* Very compatible with two phase ‘DR’ series resins for added adhesion.  



Morphology:  single continuous epoxy phase

Viscosity, cps @ 25oC


Weight per Gallon


Mix Ratio using ER or DR resins

100R : 22H by Weight

4R : 1H by Volume

Pot Life (150 grams @ 25oC)

15-20 minutes


Neat Resin Properties: Cured with DR-5,  24 hours @ RT, 2 hours @ 160oF

Flexural Modulus, Msi @ RT


Elongation @ Break, %


Hardness, Shore D


Glass Transition (Tg), oF



All data given is believed to be accurate based on the material tested.  Since the processing and testing is application and user specific, API has no assurance of how the product will be used and therefore cannot make any guarantees as to these properties or the final performance.

Address:  Applied Poleramic Inc.       Phone:  (707) 747 – 6738    Fax: (707) 747 – 6774     Email: [email protected]

                  6166 Egret Court              

                  Benicia, CA 94510

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