Prepregs

Prepregs

  • Prepregs

Prepregs

Prepreg Materials

Pre-impregnated materials (prepregs) are reinforcement fibres or fabrics into which a pre-catalysed resin system has been impregnated by a machine. The resin systems in these materials react very slowly at room temperature, giving rise to working times of many days or months. Prepreg resins can only be fully cured by heating them to the prescribed cure temperature. The accuracy of the machinery used to combine the fabric or fibre with the resin ensures that laminates produced from prepregs have more consistent and higher fibre contents than can be achieved by wet lay-up techniques. This allows the use of very tough, strong resin systems that would be too high in viscosity to be impregnated by hand.

SPRINT™ Materials

SPRINT™ materials consist of a layer of fibre reinforcement either side of a pre-cast, pre-catalysed resin film with a very lightweight tack film on one face. The material therefore has the appearance of dry reinforcement, which has resin concealed at its centre. SPRINT™ materials are produced by a process that differs from conventional prepreg so that the fibres in the reinforcements remain dry and un-impregnated by the resin. SPRINT™ materials are laid up in a mould and vacuum bagged as for conventional prepreg. However, when the vacuum is applied, the air transport properties of the dry reinforcement enable air trapped in the fibre bundles and between layers to be easily removed. When the temperature is then raised for the cure, the resin film softens and flows into the air-free reinforcement. The void content of the resultant laminate is extremely low (typically 0-0.5%).

Product Selector

Range

 Gurit Products 

Main Features

Cure

Recommended Processing Method

Max Tg1

Typical Applications

75

SE 75
SF 75-90
SFG 75-90
SA 75-90
MP 75-90
  • High performance system
  • Versatile fast curing from 70 to 120°C
  • Optimised handling and out life for large structure manufacture

35 mins at 120°C

12 hrs @ 70°C
  • Vacuum Bagging

125°C
  • Race boats
  • Agricultural booms
  • Super yachts
  • Commercial boat components
  • Production boat components
  • Wind Turbines
  • Radomes

90

 ST 90 SPRINT
SF 75-90
SFG 75-90
SA 75-90
MP 75-90
  • Fast curing system for large industrial composite structures.
  • Available in prepreg and semi-preg formats
  • Optimised for heavy weight glass and carbon reinforcements (300 – 1800gsm)

12 hrs @ 70°C

 45 mins at 120°C
  • Vacuum Bagging

120°C

140

 SE 140
  • High performance fast curing systems for press and autoclave applications
  • Flow controlled to produce high quality parts with high cosmetic finish
  • Hot in Hot Out (HiHo) capability without post cure in

Press: HiHo 10 mins at 135°C

Autoclave: 20 mins at 135°C
  • Autoclave
  • Press Moulding
  • Vacuum Bagging

140°C
  • Car body panels
  • Cosmetic parts
  • Structural components
  • Medical prosthetics
180 SE 180  Press: HiHo 5 mins at 150°C 175°C

130FR

 SE 130FR
ST 130FR
SF 130FR
  • Non halogen fire retardant system capable of meeting stringent fire standards.
  • Fast curing and optimised with ancillary products to manufacture high quality monolithic and sandwich structures at lowest total manufacturing cost

6 hrs @ 85°C

45 mins at 120°C
  • Autoclave
  • Press Moulding
  • Vacuum Bagging

120°C
  • Rail exterior structures and panels
  • Commercial marine panels
  • Civil engineering structures

 

Gurit SPRINT™ - an advanced prepreg

 

 

  • Neo 570C
    Neo 570C

    The Neo 570c project commenced in earnest in 2019. Working with longtime partner and Gurit distributor Resintex, the NEO team selected a full complement of Gurit products to achieve the weight savings needed, opting for a full prepreg carbon fiber hull, deck, structure and interior.

    https://neoyachts.com/

    Download (PDF)

  • Baltic 67
    Baltic 67 Performance cruiser

    Baltic Yachts drew on their 48 years of design and building experience to create a full composite boat, with a glass hull and full carbon deck. From concept right through each of the build stages, they worked in conjunction with Gurit Engineering and materials supply to realise their vision. Using Gurit epoxy SPRINT™ and Corecell™ M foam, Baltic were able to produce a strong, lightweight structure with a significant performance edge.

    www.balticyachts.fi

    Download (PDF)

  • Urban Automotive
    Urban Automotive

    Urban Automotive are creators and modifiers of some of the most exclusive vehicles on the planet, using industry leading techniques to tailor bespoke vehicles for their clientele.
    They elected to feature Gurit’s SFP (Short Fibre Prepreg) in the manufacture of their carbon fibre parts, due to its distinctive cosmetic finish.

    https://www.urban-automotive.co.uk/

    Download PDF

  • Brunswick
    Carbon4Stack by Voith and Gurit

    "The Voith Roving Applicator NextGen brings the manufacturing of composite material to an all new level. It is a very innovative way to process CFRP material which is flexible, automated and offers an impressively high quality. Our pilot customers are delighted, and so are we."

    Piet Heydorn, Gurit Technical Sales Manager EMEA

    https://compositestacks.com/

    Download (PDF)

Neo 570C

Baltic 67 Performance cruiser

Urban Automotive

Carbon4Stack by Voith and Gurit