SHD Prepreg composite material
Cyanate Ester prepreg

CEM100

Cyanate Ester, Very High Service Temp
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Key Features & Benefits

Key Feature Cures at medium temperatures with excellent high temperature performance
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 21 days at 70°F
TG Onset* 653°F -DMA
TG Peak* 752°F -DMA
Toughened No
Cure Autoclave
Availability All sites

CEM100 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 to meet your cost and manufacturing requirements.

Why choose this material

CEM100 offers a higher temperature solution for semi-structural applications. Good dielectric properties. Available from all SHD sites in the UK, US and Europe.

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) Military drone

Recommended markets

Automotive Aerospace Defense

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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Defense

SHD Composites is actively working on many defense programs with customers around the world
Find out more

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

Is this a suitable prepreg for parts exposed to very high temperatures?

CEM100 is designed for aerospace and motorsport parts exposed to extreme heat. After post-curing, it can handle service temperatures up to 340°C (644°F), with localised exposure up to 400°C. 

02

What is cyanate ester prepreg used for?

Cyanate ester prepregs are used for parts that need to stay stable at very high temperatures. CEM100 is suited to applications such as aerospace components, brake ducts, heat shields and other demanding motorsport parts. 

03

Can CEM100 be used for motorsport heat shields and brake ducts?

Yes. SHD specifically lists CEM100 for motorsport brake ducts and heat shields. Its high heat resistance makes it suitable for parts positioned close to engines, brakes and other hot areas. 

04

Does CEM100 work for aerospace and space applications?

Yes. CEM100 is designed for high-temperature aerospace and space components. It also offers low shrinkage and low thermal expansion, helping parts stay stable when exposed to large temperature changes. If you require enhanced dielectric performance, CEM101 is the ideal choice.

05

Why choose cyanate ester prepreg instead of epoxy?

Cyanate ester systems are often chosen when standard epoxy prepregs cannot cope with the required heat. CEM100 offers much higher temperature resistance, making it a better fit for extreme-temperature aerospace and motorsport applications. 

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