carbon fiber prepreg1
carbon fiber prerpreg2
manufacturing Carbon fiber prepreg

Carbon Fiber Prepregs

Carbon fiber prepregs are manufactured by 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 our prepreg rolls are 1m / 1.27m wide; Length is 50/100 meters.  10m rolls are available for sample orders

We have Carbon fiber prepregs in Unidirectional, Plain and Twill  weaves.

Category:

Advantages of using prepreg

  • Easy to process
  • Stable size, Easy to mould
  • Resistant to temperature and aging
  • Little unravel during transportation

Scope of application 

  • Manufacturing Fishing rods, tennis rackets, skate boards
  • Aerospace industry
  • Automobiles, yachts, Ships
  • Construction reinforcement

List of Woven Carbon Fiber Prepregs (Plain and Twill)

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 gsm 0.60mm

List of  Unidirectional Carbon Fiber Prepregs(UD)

dry weight resin content final weight thickness
20 gsm 50% 40 gsm 0.03mm
30 gsm 40% 50 gsm 0.05mm
54   gsm 38% 78   gsm 0.06mm
75 gsm 32% 110 gsm 0.075mm
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

All these above UD prepregs can be produced with/without scrim.

For more information on the strength of these UD prepregs, please visit this link.

We also supply Carbon fiber prepregs of other weights than mentioned above. Resin Content can be varied based on clients’ requirements.

Methods of Curing

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

  • Autoclave
  • Out of Autoclave
  • Heat-press moulding
  • Heat-shrink wrapped

Ideal curing process for our prepregs (made using TNYPH-42 resin) 

  • Once you take out the prepreg from the freezer, let it defrost overnight.
  • For curing, first, cure it at about 80C for about 30 minutes
  • Then raise to 120C, for 120 minutes.. If 130 C, only 60 minutes. About 4 hours if at 100 C
  • Wait until the temperature lowers to 60 C , then remove mould

This is the process for our default/standard resin system, we also supply prepregs made using other epoxy resin systems with different Tg and curing temperatures.

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 stored in a freezer (at about -18°C) then our prepreg can last for more than 6 months.

We also supply Kevlar Prepreg and fiberglass prepreg

List of Resin systems used in prepregs supplied by CA Composites
Resin

Name

 Glass Transition (Tg) Curing Condition Remarks
TNYPH-23 100-110 120 minutes at 90 C + 120 minutes at 100 C standard resin/slightly lower curing temp
TNYPH-42 120-130 30 minutes at 80 C + 100-120 minutes at 120-125C Standard tg/standard curing temp
JS-YPH170 175-180 30 minutes at 80 C + 90 minutes at 150 C moderately high tg
TN-YPH170 170-190 30 minutes at 80 C + 45 minutes at 160 C moderately high tg
JS-YPH200 195-205 30 minutes at 150 C + 120 minutes at 200 C (after cure) highest Tg
TN-FR-Epoxy 120-130 30 minutes at 80 C + 30 minutes at 150 C (or 90 minutes at 120 C) Flame Retardant/ UL94 V-0 compliant
JS-FR-Epoxy 120-130 30 minutes at 80 C + 90 minutes at 120 C Flame Retardant/ UL94 V-0 compliant
JS-YPH150 140-150 5-10 minutes at 150 C Superfast curing and moderately high tg

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