Plan a trial for your application
Protective epoxy coatings
Using the same resin and dry film thickness, compare adhesion, surface drying and water resistance.
Epoxy repair bonding
Fix the substrate and mixed batch size. Record pot life and peel behavior after cure.
Purchase specifications and incoming inspection
Use these properties to compare grades within the product family. Example figures refer to the cited grade or source. Confirm the offered specification, packaging and lead time in the quotation. Evonik Ancamide 350A · Liquid polyamide epoxy hardener ↗
| Property | Unit | Published or agreed specification | Test conditions and checks |
|---|---|---|---|
| Active hydrogen equivalent weight | g/eq | Evonik Ancamide 350A typical value 100 | State the active-ingredient or as-received product basis. Confirm the mix ratio using the resin epoxy equivalent weight. |
| Amine value | mg KOH/g | Evonik Ancamide 350A typical value 380 | List the titration solvent and endpoint. |
| Pot life | min | Agree for the grade and end use | State the resin, ratio, mixed quantity and temperature. |
When approving a sample, record the grade, methods, limits and specification revision. On receipt, match the packing lot number to the lot-specific COA and record the measured values and release decision.
From samples to commercial delivery
Packaging and receiving
Specify sealed liquid drums and distinguish neat material from solution.
Storage and handling
Record the corresponding epoxy equivalent weight, hardener version and batch label on the order.
Sample and order lead times
State processing equipment, trial batch size and monthly demand. Confirm same-grade samples, first-order MOQ, staged deliveries and arrival date.
Questions from the plant
Why did the coating remain tacky after changing hardener?
Recalculate the ratio from epoxy and active hydrogen equivalents, then check cure temperature and humidity.
Why does a large batch gel earlier than a cup with a one-hour pot life?
Record mix quantity and material temperature. Retest pot life against the supplier’s stated conditions.
Report a delivery or batch issue
Include the order number, lot number from the package, label photos and inspection records for the affected lot. When retesting, check Active hydrogen equivalent weight, Amine value, Pot life.
Request documents for your application
TDS · Technical data sheet
For grade selection and sample approval, specify the grade and revision required.
SDS · Safety data sheet
Specify the country or region of use and the required language.
COA · Certificate of analysis
Request a sample COA during supplier review. For incoming inspection, provide the actual lot number.