Haprez™ 3748

About
A two part, room curing, laminating system, that provides excellent performance results at all operating temperatures up to 300°F. As such, it can be used for room temperature applications, as well as in critical high heat conditions. Easy to mix, gels rapidly, and provides excellent wetting or chopped or woven fiberglass. It is suitable for hand lay up, or can be sprayed with conventional internal mixing equipment. May be used in combination with a HAPCOAT surface coat system to provide a totally compatible laminate. Typical applications for HAPREZ 3748 are in vacuum forms, holding fixtures, rim molds, autoclave, vacuum bag molding, and any other applications where a strong laminate is necessary.&&

Product Description
Generic热塑性聚酯
Material StatusCommercial: Active
FeaturesHigh Heat Resistance,High pressure heat resistance,Quick wetting
AvailabilitysNorth America

Technical Data
PHYSICALNominal valueUnitTest method
Density1.25g/cm³

IMPACTNominal valueUnitTest method
Impact strength of cantilever beam notch24J/m

Electrical performanceNominal valueUnitTest method
Volume resistivity
25 ℃3.2E+10ohms·cm
Dielectric strength18kV/mm
Dielectric constant
25 ℃,1 Hz4.20 

Thermosetting mixed viscosityNominal valueUnitTest method
24℃4230cP

MECHANICALNominal valueUnitTest method
Shore hardness
Shaw’s D80 
tensile strength
limit65.5MPa
bending strength105MPa
compressive strength219MPa

THERMALNominal valueUnitTest method
Continuous use temperature149
Operating temperature
Intermitten177 to 204
Thermosetting components 
Component A按重量计算的混合比: 100 
Component B按重量计算的混合比: 16 
storage stability
25 ℃60min

Notes
1. Typical properties: these are not to be construed as specifications.
2. Range: 3500 to 5000
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