配方类型:

ELASTOMERS, POLYMERS, AND RESINS

配方说明:

Unreinforced Casting Compounds (Hard)

配方组成:

Modulus (10^3 psi)/473
unsaturated isopolyester polyol and diisocyanate were thoroughly
mixed using a Cowles high-shear mixer. Moisture scavenger and catalysts
were added separately. Castings were cured for 16 h at 57 C and
post-cured for 2 h at 80 C.
Physical Properties
Methyl Ethyl Ketone Peroxide/-
Modulus (GPa)/3.26
Urethane Catalyst/0.04
Elongation (%)/5.2
Flexural Properties, ASTM D 790
Strength (psi)/19,200
Isocyanate Index/80
Strength (MPa)/132
Modulus (10^3 psi)528/
Modulus (GPa)/3.64
Izod Impact Resistance, ASTM D 256,
0.125 in. notched sample (ft-lb/in.)/1.5
(J/m)/8.0
Durometer Hardness, ASTM D 2240 Shore D rating/73
glass Transition Temperature ('C)/39
Diisocyanate/18.50
Benzoyl Peroxide/1.00
Diethylaniline/0.20
Moisture Scavanger/5.00
Tensile Properties, ASTM D 638
Isopolyester Polyol A/100.00
Strength (psi)/11,900
Cobalt Octoate (6%)/-
Strength (MPa)/8

配制方法: