SHD Prepreg composite material
Epoxy prepreg

OPS75

Oven Panel System
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Key Features & Benefits

Key Feature Out of autoclave. High class finish with reduced pre-paint preparation
Application Automotive body panels with excellent retained surface finish once environmentally cycled
Initial Cure Temp 150°F- 265°F
Initial Cure Time Consult Data Sheet Hours
Post Cure Option No
Outlife 21 - see handling guide days at 70°F
TG Onset* 284°F -DMA
TG Peak* 320°F -DMA
Toughened Yes
Cure Autoclave and Oven
Availability All sites

OPS75 material is designed to give a high class finish with reduced pre-paint preparation and versatile out of autoclave curing. It can be supplied with carbon or glass fabric reinforcement.

Why choose this material

OPS75 delivers expectional surface finish components from out of autoclave processing. Post-processing steps are minimised.

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

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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.

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 3.0°C (5.4°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 prepreg is suited for automotive body panels without an autoclave?

OPS75 is designed for automotive body panels that need a high-quality surface without autoclave processing. It can be cured in an oven, making it a practical option for manufacturers without access to an autoclave. 

02

How can I reduce sanding and preparation before painting composite panels?

OPS75 is designed to produce a smooth, high-quality surface straight from the mould. This can reduce the amount of filling, sanding and other preparation needed before paint is applied. 

03

What prepreg is suitable for Class A automotive surfaces?

OPS75 is designed for premium automotive body panels where surface quality is important. SHD highlights its excellent retained surface finish for Class A applications, making it well suited to visible painted components. 

04

Is there a fast lay-up prepreg for automotive panels?

Yes. OPS75 is designed for rapid lay-up and can be deposited up to 50% faster than conventional systems. This can help shorten production time when making automotive body panels and similar parts. 

05

Can carbon fibre body panels be made without autoclave processing?

Yes. OPS75 can be supplied with carbon fibre reinforcement and is designed for out-of-autoclave processing. This makes it suitable for producing high-quality carbon fibre body panels using an oven-based manufacturing process. 

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