Resin Research
Technical Data Sheet

Project 21 System

Resin Research Project 21 System is a bisphenol A resin based epoxy resin, modified cycloaliphatic amine curing agent system designed primarily for marine composite use. Special features of this system include medium viscosity, non-blushing characteristics, low vapor, excellent color, high gloss, excellent resistance to water vapor pressure, excellent U.V. stability and high strength.

physical state
medium viscosity water white to pale yellow liquid

storage life
At least 12 months in sealed containers at ambient temperatures.

typical properties
Color (Gardner) 1-3

Applications
Marine coatings and composites, surf and sailboards, hand lay up applications

Handling Precautions
Refer to material data safety sheet on system 2000/2100

Typical Physical Properties

Resin/hardener	1980/2100	2000/2100	2020/2100	2040/2100
Mix by Volume	2 to 1	2 to 1	2 to 1	2 to 1
Mix by Weight	100 to 45	100 to 45	100 to 45	100 to 45
Tensile Strength	10,800	9,800	10,300	9,300
Tensile Modulus	420,000	405,000	395,000	380,000
Flexural Strength	13,500	14,800	14,900	14,800
Flexural Modulas	510,000	480,000	455,000	380,000
Barcol Hardness	84	83	82	82
HDT	125F	122F	117F	115F
Compressn. Yield	16,100	15,400	13,500	11,700
Elongation %	2.3	3.8	5.1	6.5

Testing was done on room temperature specimans cured for two weeks. 

Typical values; these numbers should not be construed as specifications.

All tests were done on neat specimens and did not contain fillers or fiber reinforcements.

Resin Research East
131 Tomahawk Dr. #11
Indian Harbour Bch., FL 32937
321-779-2369

Resin Research West
4231 S. Fremont Av.
Tucson, AZ 85714
321-223-5276