3i Composites Technology Center inquiry, ideas, innovation


Product & Material Development

The 3i Composites Technology Center is dedicated to the development of materials that exceed the limitations of conventional materials to deliver meaningful results to our customers. We're working with familiar and experimental resins, reinforcements, fillers and techniques, to produce formulas that push the limits of thermoset composites to new levels, exhibiting outstanding performance characteristics across a wide range of metrics.

We are advancing our expertise in:

  • Carbon fiber composite epoxies for lighter weight options

  • Benzoxazine composites for high temperature applications

  • Hybrid resins and reinforcements for higher strength materials

  • Thermally conductive composites

  • Eco-friendly natural fibers

  • Non-volatile pre-pregs


Carbon Fiber Thermosets

Our STC product line contains a line of products that include carbon fiber.

Carbon Fiber Mat SMC
Carbon Fiber SMC
Benzoxazine

Current STC® Product Development

Material Properties

Units

Fiberglass

Carbon Fiber

Polyester MDI

Vinyl Ester

Vinyl Ester MDI

Vinyl Ester

Vinyl Ester MDI

STC 2300 Series

STC 2100 Series

STC 2400 Series

STC 4100 Series

STC 4450 Series

Flexural Strength

MPa

483 to 689

414 to 503

558 to 593

283 to 296

248

Flexural Modulus

GPa

14 to 19

14 to 19

14 to 16

46 to 47

30

Tensile Strength

MPa

290 to 393

234 to 290

345 to 400

124 to 165

131

Tensile Modulus

GPa

14 to 17

18 to 31

12 to 31

47 to 60

57

Compressive Strength

MPa

414 to 558

283 to 565

338 to 476

469 to 552

503

Unnotched Izod Impact

J/m

3,256 to 3,737

2,135 to 5,071

4,591 to 5,818

2,295 to 2,616

1,601

Specific Gravity

g/cm3

1.84 to 1.91

1.65 to 2.08

1.77 to 1.93

1.39 to 1.48

1.37 to 1.43

Click to download a pdf
of Current STC® Product Development

STC Materials Strength and Stiffnes Chart
STC Materials Stiffnes to Weight Chart