SHD Prepreg composite material
Epoxy prepreg

MTC581

MED TEMP CURE, FLOW CONTROLLED & DAMAGE TOLERANT
Let’s Discuss your application needs

Key Features & Benefits

Key Feature Higher flow control compared to MTC580
Application A toughened, flow controlled, damage tolerant prepreg designed to be cured at 250°F
Initial Cure Temp 85°C- 121°C
Initial Cure Time 16 Hours- 1 Hours
Post Cure Option no
Outlife 30 days at 20°C
TG Onset* 121°C -DMA
TG Peak* 146°C -DMA
Toughened Yes
Cure Autoclave, Oven, and Press
Availability Usa

MTC581 is a highly toughened, flow controlled, damage tolerant prepreg intended for applications in Sporting Goods, Automotive / Motorsport and Aerospace designed to be cured at 250°F (121°C). This ‘hot melt’ system is solvent-free with excellent tack and drape characteristics and can be supplied on a broad range of woven reinforcements and unidirectional tapes to meet your cost and manufacturing requirements. Snap-curing versions are available, contact SHD for details.

Why choose this material

A toughened higher flow controlled component system optimised for press moulding, MTC581 also performs well with oven and autoclave processing.

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 solution for Motorsport Advanced composite solutions for a car Advanced composite solutions for aerospace (passenger plane seating) Jet plane Tooling Prepregs Natural Fibre Composites SHD support a number of markets, including Marine, Sport and Leisure, Defence, Industrial and Rail.

Recommended markets

Motorsport Automotive Aerospace Defence Tooling Sustainability Other Sectors

Motorsport

SHD Composites is the advanced prepreg partner behind winning race teams
Find out more

Automotive

World-class performance with unmatched premium aesthetics for prestigious supercar and hypercar brands
Find out more

Aerospace

Advanced composites specified across major commercial aircraft today
Find out more

Defence

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

Tooling

A tool for every geometry, a material for every tool
Find out more

Sustainability

Our enhanced sustainability product range has applications in all our key sectors including Aerospace, Automotive, Motorsport, Marine and Sport & Leisure.
Find out more

Other Sectors

Our products can be applied to a variety of markets, and this range of applications will always remain important for SHD.
Find out more

Technical Guidance Information

01

Storage and Out Life

This material should be kept frozen at 0°F (-18°C). Good industry standard handling practices for epoxy prepregs dictate that it should be kept sealed in a polythene bag, which is typically opened once 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.

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 5.4°F (3.0°C) /min during initial cure in autoclave and oven processes, and 0.5°F (0.3°C) /min during free standing post cure

Contact us

Talk to us about your composite application

Fill in this short contact form and a member of staff will be in touch as soon as possible.

More SHD products

Epoxy prepreg

LTC250-2XL
Low Temp Cure

Bio-Content prepreg

MTB350
Med Temp Cure - 30% bio-based

Epoxy prepreg

MTC275
Med Temp Cure, Out of Autoclave

Epoxy prepreg

MTC400
Med Temp Cure, High Temp Structural

Case Studies

Case Studies

SHD’s Innovative Solutions Drive Lightweight, Low-CO₂ Performance in the Shell Triple 10 Challenge Vehicle

Case Studies

Eclipse-Harp

USA

SHD Launches MTC521FR — The Clear Choice for Flame-Retardant Cosmetic Components

Case Studies

'Sustainability Showcase Car' Collaboration Highlight: CompPair

Case Studies

'Sustainability Showcase Car' Collaboration Highlight: Lineat

Case Studies

SHD Composite Materials exhibit at JEC with Sustainability Showcase Car
See all case studies

Frequently Asked Questions

01

Is this a suitable prepreg for press moulding high-performance parts?

MTC581 is designed for press moulding and offers controlled resin flow for more consistent results. It is well suited to automotive, motorsport, aerospace and sporting goods where strong, repeatable composite parts are needed. 

02

Is there a prepreg that works well on complex shapes?

Yes. MTC581 has excellent tack and drape, helping it stick during lay-up and follow curved or detailed shapes more easily. This can make it easier to produce complex composite parts. 

03

Can MTC581 be used without press moulding?

Yes. Although MTC581 is optimised for press moulding, it also performs well with oven and autoclave processing, giving manufacturers more flexibility in how parts are produced. 

04

What prepreg is suitable for impact-resistant composite parts?

MTC581 is a highly toughened, damage-tolerant prepreg designed for demanding components. This makes it a strong option for parts where durability and resistance to knocks, loads or repeated use are important. 

05

Is there a fast-curing prepreg for higher-volume production?

Yes. Snap-curing versions of MTC581 are available for projects where shorter production cycles are needed. This can make it a useful option for higher-volume manufacturing where speed and consistency are important. 

Accreditations

Ready to discuss your project?

Leave your details and we will contact you ASAP

Request a callback