Name: Two-Part Epoxy Adhesive Resin EX-2020 (Part A)
Brand: Coatingsink
SKU: two-part-epoxy-adhesive-ex2020
Availability: InStock

Question 1

What hardener should be paired with EX-2020 Part A?

Accepted Answer

EX-2020 is compatible with standard amine hardeners (polyamide, cycloaliphatic amine) at a mix ratio of 2:1 or 1:1 by weight depending on the selected hardener. Room-temperature curing amine hardeners give workable pot life of 30–60 min and reach handling strength within 4–8 hours. For faster cure, low-temperature-active accelerators can be added.

Question 2

Why is the paste filled with calcium carbonate and fumed silica?

Accepted Answer

Calcium carbonate adds bulk and improves compressive strength while reducing cost. Fumed silica provides thixotropy, preventing sagging on vertical surfaces — critical for repair compounds and overhead applications. The combination gives EX-2020 its characteristic paste consistency, which can be applied by trowel or cartridge gun without slump.

Color	off-white paste
Filler Content	calcium carbonate + fumed silica
Viscosity (25°C)	15000–25000 mPa·s
Mix Ratio (A:B w/w)	2:1 or 1:1 per hardener
Epoxide Equivalent Weight	170–185 g/eq

Two-Part Epoxy Adhesive Resin EX-2020 (Part A)

Specifications

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