​ ​​CA COMPOSITES Limited

Carbon Fiber Prepreg


Carbon fiber prepregs are made from the infusion of carbon fiber cloths with a controlled amount of  epoxy resin. 

All our prepregs are protected with wax paper on one side and plastic film on the other. 

All prepreg rolls are 1m / 1.27m wide; Length is 50/100 meters

We have prepregs in Uniderectional, Plain and Twill  weaves.


Advantages of using prepreg


  • ​Easy to process

  • Stable size, Easy to mould

  • ​Resistant to temperature and ageing 

  • Doesn't unravel during transportation


Scope of application


  • ​​​Aerospace industry

  • Fishing rods, tennis rackets, skate boards

  • Automobiles, yachts, Ships

  • Concrete reinforcement​​​


​Unidirectional Carbon Fiber Prepregs(UD)


dry weight     

resin content    

final weight     

thickness       

54   gsm

60%

75   gsm

0.025mm

100 gsm

35%

155 gsm

0.1mm

150 gsm

35%

230 gsm

0.15mm

200 gsm

35%

300 gsm

0.20mm

300 gsm

35%

460 gsm

0.35mm



Woven Carbon Fiber Prepregs(Plain and Twill weaves)


dry weight     

resin content    

final weight      

thickness     

3k 200 gsm

40%

330 gsm

0.23mm

6k 320 gsm

40%

535 gsm

0.36mm

12K 400 gsm

45%

725 gsm

0.45mm

12K 600 gsm
 40%980 gsm0.60mm


We can also supply Carbon fiber prepregs of other weights than mentioned above.

Resin Content can be varied based on clients requirement.


Methods of Curing

Our Prepregs are extremely convenient to work with and can be cured or laminated in a variety of methods:

  • Autoclave

  • Out of Autoclave

  • Heat-press moulding ( this is how we make our laminated carbon fiber sheets)

  • Heat-shrink wrapped


For our prepregs , ideal curing process is :

1.      Once you take out the prepreg from freezer, let it defrost overnight.

2.      For curing, first cure it at about 80C for about 30 minutes

3.      Then raise to 120C, for 120 minutes.. If 130 C, only 60 minutes. About 4 hours if at 100 C

4.      Remove the mould at about 60 C.


Storage and Transportation


Our Prepregs can be stored at room temperature for about a month hence do not require freezer bags for transportation. But if you store it in a freezer at about -20°C then it can last more than 6 months