CONATHANE® EN-2550

About
CONATHANE EN-2550 is a two-part, filled polyurethane resin system formulated for casting high-voltage transformers and potting or encapsulating electronic devices. The system features good handling properties at room temperature, good working life, and minimum processing hazards. CONATHANE EN-2550 can be cured at room or elevated temperatures without the formation of voids. The cured compound has excellent water resistance, and is resistant to thermal shock. Other beneficial characteristics of this system include low exotherm, low stresses during cure, low shrinkage, and very good electrical properties.&&

Product Description
SupplierCytec Industries
GenericPUR
Material StatusCommercial: Active
FeaturesExcellent Processability,Good Electrical Properties,Low Exotherm,Antimicrobial properties,Low contractility,Good thermal shock resistance,V-0
AvailabilitysNorth America

Technical Data
PHYSICALNominal valueUnitTest method
Density 
1.23g/cm³
1.52g/cm³
Water absorption rate 
25 ℃, 24 hours, in water0.075%
7days0.19%
25 ℃, 7 days, in water1.5%
Solid content 
100%

elastic bodyNominal valueUnitTest method
tear strength41.2kN/m

Electrical performanceNominal valueUnitTest method
Surface resistivity 
6.1E+17ohms
1.5E+14ohms
7.8E+11ohms
Volume resistivity 
25 ℃2.1E+14ohms·cm
60 ℃1.1E+13ohms·cm
120 ℃1.4E+11ohms·cm
Dielectric strength 
0.406 mm43kV/mm
0.813 mm33kV/mm
1.57 mm21kV/mm
Dielectric constant 
25 ℃,100 Hz4.38 
25 ℃,1 kHz4.13 
25 ℃,1 MHz3.81 
Dissipation factor 
25℃,100 Hz0.096 
25℃,1 kHz0.034 
25℃,1 MHz0.020 
Arc resistance> 120sec
insulation resistance 
25℃3.0E+13ohms
60℃1.0E+11ohms
120℃1.2E+10ohms

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant levelV-0 UL 94

Thermosetting mixed viscosityNominal valueUnitTest method
25℃150cP
25℃17000cP
25℃3000cP
40℃1200cP

Supplementary informationNominal valueUnitTest method
Cold and hot shock test -10 cycles, -65 ℃ to 130 ℃passes 
Working period
234 gm mass to 100000 cps,25℃53.0min
Antifungal activityNon-nutrient 

Cured PropertiesNominal valueUnitTest method
Linear Shrinkage0.58%

MECHANICALNominal valueUnitTest method
Shore hardness
Shaw’s D50 
tensile strength12.4MPa
Tensile strain
fracture630%

THERMALNominal valueUnitTest method
Linear coefficient of thermal expansion
MD1.6E-41/℃
Thermal conductivity coefficient0.33W/m/K
Thermosetting components 
resin按重量计算的混合比: 17 
Hardening method按重量计算的混合比: 100 

Notes
1. Typical properties: these are not to be construed as specifications.
2. Resin
3. Hardener
4. 90°C
5. 60°C
6. 25°C
7. Mixed
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