SHD Prepreg composite material
Cyanate Ester prepreg

CEM160

Cyanate Ester, Higher Service Temp, Available on UD reinforcements
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Key Features & Benefits

Key Feature Cures at medium temperatures with excellent high temperature performance. UD reinforcements available
Application High service temp Automotive and Space components with low-outgassing requirements
Initial Cure Temp 250°F- 275°F
Initial Cure Time 3 Hours- 2 Hours
Post Cure Option Yes
Outlife Up to 21 days at 70°F
TG Onset* 527°F -DMA
TG Peak* 572°F -DMA
Toughened No
Cure Autoclave
Availability All sites

CEM160 is a cyanate ester prepreg designed to cure at medium temperatures, whilst producing durable components with excellent high temperature performance. It can be supplied on a variety of fabrics and in UD format to meet your cost and manufacturing requirements.

Why choose this material

Optimised for higher temperature UD materials. CEM160 also offers good dielectric properties.

Supplied with SHD's renowned service, including:

  • Short two-week lead times and low MOQs

  • Exceptional product quality

  • First class technical support

  • Excellent customer service

  • The same manufacturing equipment and processes across all sites

Advanced composite solutions for a car Advanced composite solutions for aerospace (passenger plane seating)

Recommended markets

Automotive Aerospace

Automotive

World-class performance with unmatched premium aesthetics for prestigious supercar and hypercar brands
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Aerospace

Advanced composites specified across major commercial aircraft today
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Technical Guidance Information

01

Storage and Out Life

This material should be kept frozen at -18°C (0°F). It must be kept sealed in a polythene bag which must not be opened until fully thawed to room temperature. If the material is not fully used, then the material must be resealed in the polythene bag to prevent moisture absorption.

Important Note

If bags are opened before fully cured, condensation may form on the material. Cyanate ester prepregs may react with moisture, which can affect the curing reaction and cause voidage. Great care must be taken to avoid contact with water. Thoroughly dry all tooling and fixtures before commencing lay-up.

02

Health and Safety

This material contains epoxy resin which can cause allergic reactions with skin contact and must avoid repeated and prolonged skin contact.

Please refer to the product Safety Data Sheet before using this material. The following precautions must be taken when using epoxy resin prepregs:

  • Overalls must be worn

  • Impervious gloves must be worn

  • Curing schedule is meant to be as a guide only and is subject to local conditions

  • To avoid exotherm, particular care must be taken with thick laminates

  • Ramp rates must not exceed 1.0°C (2.0°F)/min during initial cure and 0.3°C (0.5°F)/min during post cure

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Frequently Asked Questions

01

What is cyanate ester prepreg used for?

Cyanate ester prepregs are used for composite parts that need to perform reliably at high temperatures. CEM160 is designed for durable, heat-resistant components across demanding aerospace, motorsport and industrial applications. 

02

Is this a suitable product for high-temperature composite parts?

CEM160 is designed for components exposed to high temperatures while still offering practical processing. It cures at medium temperatures and provides strong heat resistance once fully cured, making it suitable for demanding structural applications. 

03

Can high-temperature prepreg be cured at moderate temperatures?

Yes. CEM160 is designed to cure at medium temperatures while still delivering excellent high-temperature performance. This can make manufacturing easier where extremely high curing temperatures are not practical. 

04

Can cyanate ester prepreg be supplied in different fibre formats including UD?

Yes. CEM160 can be supplied on a range of fabrics and in unidirectional (UD) format. This gives manufacturers more flexibility to choose a material format that suits the part, production method and cost requirements. 

05

Why choose cyanate ester prepreg instead of standard epoxy?

Cyanate ester prepregs are often chosen when greater heat resistance is needed than standard epoxy systems can provide. CEM160 combines high-temperature performance with a more manageable medium-temperature cure, helping balance performance with practical manufacturing. 

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