OPS 75 (DF259) Surface Carbon Prepreg for Tooling

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.
The standard system comprises of 1 layer of OPS75 surface ply and 1 layer of PSB75 bulk ply.
Typical applications: Automotive Body Panels – Out of Autoclave 
 

Key Features & Benefits

• Cure temperature from 65°C to 130°C
• Service temperature up to 130°C after post cure
• Work life at 20°C: 21 days
• Storage life at -18°C: 12 months
• Very low VOC content – no added solvents during manufacture
• Rapid lay-up – up to 50% faster than conventional systems
• High class finish with reduced pre-paint preparation
• Out of autoclave
• Suitable for rapid prototype tooling applications
• Roll width: 1250 mm

Selective impregnation technology carbon-epoxy surface film prepreg containing an E-glass surface tissue of 49 g/m² attached to a 3K 2x2 Twill 199 g/m² carbon fabric.

This prepreg is especially designed for the manufacturing of high performance carbon/epoxy prepreg moulds cured in oven and under vacuum.

Total weight per m²: 750 g (500 g of epoxy resin + 200 g of carbon fabric + 50 g of glass tissue).
One cured layer total thickness: 0.65 mm.

Vacuum curing conditions: 16 hours at 65 °C, 5 hours at 80 ºC and others.

Recommended Cure Cycle:

• 1st dwell at 75°C for 1h, at a ramp rate of 1°C/min under full vacuum
• 2nd dwell at 120°C for 1h, at a ramp rate of 2-3°C/min under full vacuum
  

For optimum performance, it is recommended that the part is subject to a post cure to 150°C for 2 hours.  
 
Resulting panel thickness for OPS75 surface and PSB75 bulking after full consolidation, around 1.5-1.7mm. For additional thickness and stiffness if required, additional PSB75 bulk or OPS75 surface plies may be used.
 
Other cure cycles and additional reinforcements are available on request.
 
Use of perforated release film is recommended.
 
Curing Schedule is meant to be 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 per minute during initial cure.

Ramp rates must not exceed 0.3°C per minute during post cure (free standing).
 
 

READ THE TECHNICAL DATA SHEET AND ASK FOR ADVICE IN CASE OF ANY DOUBT

Type of supply

Carbon-epoxy surface film prepreg OPS 75 (DF259)  for Tooling x 1 m2, supplied rolled in cardboard box

Carbon-epoxy surface film prepreg OPS 75 (DF259)  for Tooling x 5 m2, supplied rolled in cardboard box

Carbon-epoxy surface film prepreg OPS 75 (DF259) for Tooling x 25 m2, supplied rolled in cardboard box