PC-780 is a rapid setting, 100% solids, flexible, aromatic two-component polyurea. This odorless volatile- free elastomeric is specially designed to be applied to various substrates including concrete, metal, geotextile and other lining membranes. PC-780 gels in 15 seconds—it can be applied in single or multiple applications without the concern of sagging. PC-780 offers a tack-free time of about 3 minutes and a low amount of stress shrinkage from curing at <0.7%.
Mix Ratio by Volume
Gel Time (Seconds)
15 – 20
Tack-Free Time (Minutes)
Shore A Hardness ASTM D2240
80 – 85
Shore D Hardness, ASTM D2240
Elongation, ASTM D638, Type IV
Tensile Strength (PSI), ASTM D638, Type IV
Tear Strength (lb./in.), ASTM D624, Die C
Taber Abrasion, ASTM D4060
(CS-17 Wheel, 1000 Cycles)
Water Vapor Transmission, ASTM E96, Proc A, permeability (80 mils), grams/Pa*s*m
The values stated in this technical data sheet are produced under controlled laboratory conditions.