Resin Research Technical Data Sheets 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, transportation, architectural and general 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, transportation, architectural, and general composites, surf and sailboards, hand lay up applications, coatings 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. Composite Pro System Resin Research Composite Pro is a bisphenol A resin based epoxy resin, modified cycloaliphatic amine curing agent system designed primarily for marine, transportation, architectural, and general composite use. Special features of this system include low viscosity, non-blushing characteristics, low vapor, excellent color, high gloss, excellent resistance to water vapor pressure, excellent U.V. stability and high strength.  It's low viscosity facilitates easy wetting of fabric intensive laminates in both hand lay up and infusion. physical state Low 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, transportation, architectural, and general composite use, hand lay up and infusion applications, coatings Handling Precautions Refer to material data safety sheet on system 2050/3100 Resin/hardener 2050/3100 2070/3100 2090/3100   Mix by Volume 3 to 1 3 to 1 3 to 1   Mix by Weight   100 to 30    100 to 30    100 to 30   Tensile Strength     11,200     10,300     10,400   Tensile Modulus    470,000     445,000    415,000   Flexural Strength    13,700     14,900     15,300   Flexural Modulas   530,000    510,000    475,000   Barcol Hardness       85       84        82   HDT     126F     124F      119F   Compressn. Yield   16,100   15,400    13,500   Elongation %     2.7      4.1       5.6   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