2573 PREPREG SYSTEM
2573 prepregs are highly toughened 120 to 135°C cure systems. Nano-technologies are applied to2573 prepregs to increase toughness and compressive strength, so the system is called NANOALLOY®. They are available in a variety of configurations, including unidirectional sheets and fabrics.

NEAT RESIN PHYSICAL PROPERTIESRESIN VISCOSITY CURVE
10000

METHODVALUETg (Dry)DMA@5℃/min
Cure condition:130℃×120min

1331000

η*[Pa*s]

PROPERTY

10010120406080

100120Temp.[ °C ]TYPICAL LAMINATE PROPERTIES
Prepreg TypeP 220_SCF TypeT800S

PROPERTY

METHOD

UNIT

VALUE

0° Tensile Strength*

Toray method (compliant with ASTM)

MPa

3530

0° Tensile Modulus*

Toray method (compliant with ASTM)

GPa

166

90° Tensile Strength

Toray method (compliant with ASTM)

MPa

80

0° Compressive Strength*

Toray method (compliant with SACMA (SRM1R))

MPa

1490

0° Flexural Strength*

Toray method (compliant with ASTM)

MPa

1690

0° Flexural Modulus*

Toray method (compliant with ASTM)

GPa

148

Inter-laminar Shear Strength

Toray method (compliant with ASTM)

MPa

87

±45° In Plane Shear Strength

Toray method (compliant with ASTM)

MPa

128

±45° In Plane Shear Modulus

Toray method (compliant with ASTM)

GPa

4.7

* Vf60%

1STORAGE LIFEBAGGING PROCEDURE
Vacuum Bag
Polyester Mat Surface Breather
Non-Perforated FEP Film

Storage temperature−18℃ or less

6 months

Prepreg

5℃ or less3 months

Non-Perforated FEP Film
Tool

20℃ or less

1.5 months

Fiber glass strand
Edge Breather
Vacuum Seal Tape

CURING CHARACTERISTICS
1401000120

Gel Time(sec.)

Cured Tg (℃)

10080

100604010200306090120120

Time(min)Cured Tg vs.curing time(@130℃)

140160180Temperature(℃)
Gel time vs. TemperatureSpecifications of Torayca® prepreg productsStandard length● Unidirectional prepreg : 100 m● Woven prepreg : 50 or 100 m

Packing form

The prepreg is rolled around a paper tube together with a silicon-coated separation paper,and the roll is packed in a sealed polyethylene bag to prevent moisture absorption.
● Diameter of paper tube for unidirectional prepreg : 300 mm in inner diameter● Diameter of paper tube for woven prepreg : 76 or 300 mm in inner diameter

Product shipment

The 180℃ curing type is shipped refrigerated (-18℃ or less).
The 130℃ curing type is shipped on regular trucks unless otherwise requested.

Handling precautions

1. Store the received prepreg in a freezer or refrigerator without delay.
2. Torayca® prepreg has been adjusted to have the best tackiness at room temperature (24 ± 3℃).
3. Mixing-in of impurities into the prepreg may cause curing problems or defective product.
4. Implement safety measures when handling the prepreg.
● Epoxy resin may cause inflammation to some people.
● Ventilate the work room well to prevent resin volatile matter from staying indoors.
● Torayca® is a good conductor. Give consideration to electrical apparatuses.
● Do not incinerate waste carbon fiber materials and carbon fiber induced products, but dispose of themcorrectly as industrial waste.

2

Handling precautions for carbon fiber
Carbon fiber is conducive. Implement dust-proof measures to prevent electrical equipment from shorting, malfunctioning, etc.,
due to fibers scattering and flying around in the work area.
No cases of health problems due to carbon fiber have been reported, but short fibers may attach to the skin or viscous membrane to cause
itchiness or inflammation. When handling carbon fiber, wear a mask, gloves and other protective equipment to prevent carbon fiber from being
inhaled or attaching to the skin.
Incinerating waste material of carbon fiber or carbon fiber composite material may cause fibers to scatter and fly around and cause electricalfailures. It is appropriate to bury such material as industrial waste.

Cautions
1. This product documentation does not guarantee the result or product safety/compliance achieved by applying the information provided herein.
When using the product, confirm its safety/compliance according to the purpose of use.
2. Our carbon fiber Torayca® products or technologies relating to the design, manufacturing or use thereof may be classified as the goods
specified in 1 to 15 of Appended Table 1 of the Export Trade Control Order, or as the technologies specified in 1 to 15 of Appended Table 1 of
the Foreign Exchange Order, or as other goods/technologies that may be specified by the government as being subject to export control fornational security reasons.
When exporting or providing to a non-resident any such Torayca® product or any such technology relating to the design, manufacture or use ofTorayca® product, an export permission or service transaction permission must be obtained from the Minister of Economy, Trade and Industry
or other necessary procedure must be taken according to the Foreign Exchange and Foreign Trade Act or other relevant law, notice, etc.

Torayca® is a registered trademark of Toray's high-performance carbon fiber.

2-1-1 Nihonbashi Muromachi, Chuo-ku, Tokyo 103-8666
TEL : +81(3)3245-5758 FAX ：+81(3)3245-5817
URL : www.cf-composites.toray
Updated August 3, 2021
Version Original3