NT-350 MODIFIED EPOXY

The NT-350 Enduredge Max represents the next generation in prepreg resin technology.

This novel prepreg product offers outstanding surface finish and laminate quality using vacuum bag only processing. Unlimited out-time (no refrigerated storage) with zero change in process parameters over time.

NT-350 allows the parts builder to efficiently build large out-of-autoclave structures with near zero voids (<1%) without complicated debulking processes or elaborate cure cycles. While NT-350 was designed for OOA processing, it is perfectly suitable for in-autoclave processes as well. NT-350 achieves full mechanical properties during its initial cure cycle; Tg can be increased by post curing. NT-350 is designed for aerospace secondary and primary structures, space and satellite structures and radomes.

Ideal Applications

  • Radomes
  • Secondary Aerospace Structures
  • Space and Satellite Applications
  • Urban Air Mobility
  • Unmanned Aircraft
  • High Performance Automotive

Product Features

  • Excellent Mechanical Properties – full mechanicals without post-cure
  • No Freezer Storage; >12 months out-time at ambient storage conditions (70-80°F)
  • Excellent Mechanical Properties with Vacuum Bag Only processing
  • Unique engineered air release channels allows excellent OOA processing
  • Very thick laminates can be produced without any debulk steps
  • No changes in laminate processing conditions or rheology over time
  • Optimized for high quality surface finish

Neat Resin Properties

Density 1.17 g/cc

Dk=2.78; Df=0.013

Moisture absorption 2.2%

DRY TgWET Tg
315°F (157°C) 250°F (120°C)

Prepreg Mechanical Properties on Carbon (Vacuum Bag Only)

PROPERTY (0°)METHODCARBON FIBER
Tensile StrengthASTM D3039121 ksi (836 MPa)
Tensile Modulus ASTM D30399.52 Msi (65.4 GPa)
Compressive StrengthASTM D664193.7 ksi (648 MPa)
Compressive ModulusASTM D66419.71 Msi (66.7 GPa)
Flexural StrengthASTM D7264138 ksi (952 MPa)
Flexural ModulusASTM D72648.8 Msi (56.1 GPa)
Short Beam Shear StrengthASTM D23449.1 ksi (62.4 MPa)
Open Hole CompressionASTM D648442 ksi

Data normalized to 60% fiber volume
* OHC 3K 2×2 twill AS4D 0/45 all others on 3K Grafil TR30S 2×2 twill

Prepreg Mechanical Properties on Uni-Directional Fibers

PROPERTYMETHODRESULT
Tensile StrengthASTM D3039355 ksi (2451 MPa)
Tensile Modulus ASTM D303921.9 Msi (150.4 GPa)
Compressive StrengthASTM D6641208.9 ksi (1440 MPa)
Compressive ModulusASTM D664120.4 Msi (140.6 GPa)
Flexural StrengthASTM D7264170.9 ksi (1178.3 MPa)
Flexural ModulusASTM D726419.9 Msi (137.1 GPa)
Short Beam Shear StrengthASTM D234412.4 ksi (85.0 GPa)

Hexel IM-7 fiber NT-350 resin system autoclave cured

Normalized to 57% finer content (except SBS)

NT-300 MODIFIED EPOXY

This entry-level system was designed to be used for out-of-autoclave processing. NT-300 boasts excellent strength and toughness while providing an outstanding surface finish making it ideal for any parts requiring high cosmetically appealing appearance.

Neither vacuum bag nor autoclave cure is needed with NT-300. Achieve autoclave cure like quality using vacuum bag only processing AND get less than 1% void content. The proprietary unique resin system doesn’t require freezer storage and can be stored at room temperature for up to a year without any changes in rheology or processing conditions.

Ideal Applications

  • Automotive
  • Transportation
  • Sporting Goods
  • Applications that require cosmetic appearance

Product Features

  • Excellent Mechanical Properties – full mechanicals without post-cure
  • No Freezer Storage; >12 months out-time at ambient storage conditions (70-80°F)
  • Excellent Mechanical Properties with Vacuum Bag Only processing
  • Unique engineered air release channels allows excellent OOA processing
  • Very thick laminates can be produced without any debulk steps (laminates up to 30 plies can be achieved without additional debulk cycles)
  • No changes in laminate processing conditions or rheology over time
  • 300 Tg with post cure
  • 260 Tg with standard cure

Neat Resin Properties

Density 1.17 g/cc

DRY TgWET Tg
300°F (148°C)270°F (132°C)

Prepreg Mechanical Properties on Carbon (Vacuum Bag Only)

PROPERTY (0°)METHODCARBON FIBER
Flexural StrengthASTM D7264140 ksi (965 MPa)
Flexural ModulusASTM D72649.1 Msi (62.7 GPa)
Short Beam Shear StrengthASTM D23449.5 ksi (65.5 MPa)

Data normalized to 60% fiber volume
* OHC 3K 2×2 twill AS4D 0/45 all others on 3K Grafil TR30S 2×2 twill

Scroll to Top

more info

Please fill out the form if you are interested in receiving a Technical Data Sheet and/or a Safety Data Sheet.