DESCRIPTION

ERS 178 is the bisphenol A epoxy resin modified by dimeric acid addition.

-Improve flexibility (absorb shock wave and stress)

-Improve hydrophobicity, weather resistance and organic matter compatibility (asphalt, etc.)

Compared with the liquid rubber CTBN modification system, the dimeric acid modified resin can provide the following benefits:

-Better toughness (higher fracture strength 10.9 vs 6.5 kJ/m of CTBN ²)；

-After the durability test of high humidity, it still has high tightness;

-Low moisture permeability (0.8 x 10^-4~3.0 x 10^-4 cm ²/ s)；

-It will not decompose due to heat and oxidation (because there is no residual double bond);

-More safety, health and environmental protection;

-It is a more cost-effective solution;

PHYSICAL AND CHEMICAL PROPERTIES

Items	Method	Unit	Value
Appearance	Visual	—–	light yellow liquid
Color	GB/T  22295-2008	Gardner	4
Dimeric acid	—–	%	40
EEW	GB/T  4612-2008	g/eq	540～600
Viscosity	GB/T  10247-2008	mPa·s（50℃）	40000～60000
Density	GB/T  13354-1992	g/cm³（25℃）	1.08