Usaturated polyester resins
DESCRIPTION
Unsaturated polyester (UP) resins is liquid product containing linear unsaturated polyester polymers (50-70%) and mainly styrene (30-50%). The role of styrene is first to dissolve the polymers for good application properties when adding the reinforcement and secondly to take part in the curing process by cross linking the linear polymers and creating the final reinforced structure or composite.
 
 

CHRACTERISTICS

 
Appearance (Raw)
Turbid
Mechanical Properties
High Strength
Appearance (Finished Product)
Glossy
Moulding
SMC/BMC
Main Application
Water Tank Panel, Industrial Parts
 
 
RESIN PROPERTIES
Specific Weight @25⁰C
@25⁰C
1.10
Acid Value
–
16 – 24 mgKOH/g
Viscosity
@25⁰C
1300 – 1700 mPa.s
Solid Content
–
61 – 67 %
Reactivity (SPI)
Test Temperature
82.2℃
Catalyst System
1.0 pbw BPO
Gel Time
9 ~ 11 min
Peak Exothermic Temperature
215 ~ 275℃ 
 
 
CURED RESIN PROPERTIES (NON-REINFORCED)

Mechanical Properties
Barcol Hardness (934-1)
50
Tensile ASTM D 638
Tensile Strength
55 MPa
Tensile Modulus
3000 MPa
Elongation at Break
2.3 %
Flexural ASTM D 790
Flexural strength
100 MPa
Flexural modulus
3100 MPa
Thermo Mechanical Properties
HDT ASTM D 648
120℃
Post cure
Room temp.*6hrs, 80℃*2hrs and 120℃*1hr
Post cure
Room temp.*6hrs, 80℃*2hrs & 120℃*1hr & 150℃*1hr
    
 
 
SHELF LIFE
6 months from the date of production when stored in original sealed containers below 25℃, away from direct heat, sunlight and rain. This usage life is cut in half for every 10℃ over 25℃.
 
 

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