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High-temperature epoxy resin T26

Summary

T26 is a one-part structural resin for producing composites with low porosity and increased operating temperature.

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Description
Specifications
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Description

T26 is a one-part structural resin for producing polymer composites with low porosity and increased operating temperature. This resin has a low viscosity at temperatures above 60°C, which provides its high processability and the possibility to manufacture composites with vacuum infusion and RTM.

It is our best-seller for applications that requires high-grade epoxy resin.

Advantages:

  • T26 is a one-component structural resin with high mechanical performance and operating temperatures up to 150°C;
  • Low moisture absorption;
  • High impact resistance characteristics;
  • Wide processing window for impregnation - not less than 7 hours at the temperature of 110°C;
  • Curing temperature is 180°C;
  • Impregnation temperature is 110°C;
  • Glass-transition temperature is 172°C.

Neat resin characteristics

Tensile strength, MPa

ASTM D638

95

Tensile modulus, GPa

ASTM D638

3.1

Flexural strength, MPa

ASTM D790

152

Dry glass transition temperature, Tg, °С

ASTM E1640

202

Fracture toughness, KIC, MPa ∙ m1/2

ASTM D5045

0.624

Strain energy release, GIC, J/m2

ASTM D5045

188

CTE, K-1

ASTM E831

72•10-6

Density, g/cm3

ASTM D792

1.17

Moisture absorption, % (54h, boiling water)

 

1.6


Properties of CFRP

FABRICS: Samples for testing were obtained by vacuum infusion based on T26 resin and carbon fabric (CF) 22508 (sateen 8H, 200 g/m2, 3K, 3.95 GPa) or plasticized carbon fabric (PCF) 22508 covered by veil.

Properties and conditions

Test method CF PCF

Tensile strength 0°σ11+, MPa at 25°C

ASTM D3039

910

904

Tensile strength 90°σ22+, MPa at 25°C

ASTM D3039

881

904

Tensile modulus 0°E11+, GPa at 25°C

ASTM D3039

65

66

Tensile modulus 90°E22+, GPa at 25°C

ASTM D3039

66

66

Compression strength 0° σ11-, MPa at 25°C

ASTM D6641

643

638

Compression strength 90° σ22-, GPa at 25°C

ASTM D6641

679

608

Shear strength τ13 , MPa at 25°C

ASTM D2344

74

66

Shear strength τ13 , MPa at 120°C

ASTM D2344

51

40

Shear strength τ13 , MPa at 150°C

ASTM D2344

45

34

Shear strength τ12  , MPa at 25°C

ASTM D3518

84

79

Shear modulus G12 , GPa at 25°C

ASTM D3518

4.5

4.3

Compression after impact 6.67 J/mm, MPa

ASTM D7137 

225

301

Delamination area, mm2

ASTM D7137 

679

483

Strain energy release GIC, kJ/m2

ASTM D5528

0.4-0.5

0.8-2.8

UD TAPES: Samples for testing were obtained by vacuum infusion based on T26 resin and UD tape covered by veil 11424 (200 g/m2, 12K, 4.5 GPa/240 GPa).

Tensile strength 0°σ11+, MPa

ASTM D3039

1886

Compression strength 0° σ11-, MPa at 25°С

ASTM D6641

1210

Compression strength 0° σ11-, MPa at 80°С

ASTM D6641

920

Compression strength 0° σ11-, MPa at 120°С

ASTM D6641

772

Compression strength 0° σ11-, MPa at 150°С

ASTM D6641

691

Tensile strength 90° σ22+, MPa

ASTM D3039

59

Compression strength 90° σ22-, MPa

ASTM D6641

166

Tensile modulus 0° E11+, GPa

ASTM D3039

108

Tensile modulus 90° E22+, GPa

ASTM D3039

7,0

Shear strength τ13 , MPa at 25°С

ASTM D2344

69

Shear strength τ13 , MPa at 80°С

ASTM D2344

46

Shear strength τ13 , MPa at 120°С

ASTM D2344

34

Shear strength τ13 , MPa at 150°С

ASTM D2344

28

Shear strength τ12 , MPa

ASTM D3518

80

Shear modulus G12, GPa

ASTM D3518

4,0

Compression after impact 6,67 J/mm, MPa

ASTM D7137

340

Viscosity

Viscosoty T26(1)

Viscosity T26(2)

Application area

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