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UPR Unsaturated Polyester Resin for PUTTY

UPR Unsaturated Polyester Resin for PUTTY

Unsaturated polyester resin is a condensation polymer formed by the reaction of polyols and saturated/unsaturated dibasic acids at 190-220℃ until the expected acid value or viscosity is met. After reaction procedure, addition of certain amount of styrene monomer to formed a unsaturated polyester resin. It possesses good mechanical and electric properties, corrosion resistance. Curing can occur at room temperaturewithout any heating equipment, and makes it easier to manufacture large objects.

TC191 general purpose polyester resin features low viscosity, good mechanical strength and high ductility, suitable for all kinds of hand layup FRP products.

unsaturated polyester resin property

Item

Range

unit

Testing method

appearance

Light yellow viscous liquid

GB/T 8237.4.1.1

Acid value

  25-30

mgKOH/g

GB/T 2895

Viscosity,25℃

0.25-0.45

Pa.s

GB/T 7193.1

Solid content

61-70

%

GB/T 7193.3

Gel time ,25℃

9-17

min

GB/T 7193-2008

Gel time testing: 50% Cyclohexanone peroxide paste: 4%, promoter E1:4%

unsaturated polyester resin casting body property

Item

Unit

Measured value

Testing method

Barco hardness

——

41

GB 3854—83

Heat distortion temperature

70

GB 1634—04

Bending strength

MPa

112

GB/T 2570—95

Tensile Strength

MPa

60

GB/T 2568—95

Elongation at break

%

3.5

GB/T 2568—95

Impact strength

KJ/m2

10.2

GB/T 2571—95

Notes:1.casting body preparation method according to GB8237-87

2. Curing system: hardener 55%MEKP:2% , promoter E1:2%  

post cure system:60℃×2h + 80℃×2h      

unsaturated polyester resin FRP typical data

Item

Unit

Measured data

Testing method

 Bending strength

MPa

365

GB/T1449—83

Tensile Strength

MPa

290

GB/T1447—83

Impact strength

KJ/m2

235

GB/T 1451—83

Notes:1.casting body preparation method according to GB8237-87

Curing system: hardener 55%MEKP:2% , promoter E1:2%  

post cure system:            60℃×3h + 110℃×3h

unsaturated polyester resin package and storage conditions

Packed in metal barrel , 220kg/barrel (about 85.6 gallons)

Try to prevent liquid resin from directly sunshine and heat resource

Prohibit open before use

Flammable, should keep away from open fire

Shelf life is 6 month under 25℃

Store and operate in a dry, well-ventilated place

Please read MSDS carefully before use this product