12k 400 GSM Carbon fiber prepreg

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 carbon fiber prepreg rolls are 1m / 1.27m wide; the Length is 50/100 meters.

10m rolls are available for sample orders.

12k 400 GSM Carbon fiber prepreg

 

Resin type

TNYPH-42T
Minimum cure temperature 115 ℃
TG start 135℃
TG peak 145℃
 Fibre Zhongfu SYT49
Reinforcement type  Twill (and plain)
fiber count/cm warp:2.5
weft:2.5
 Cure time/temperature 90℃*120min+100℃*100min-120min; Can be adjusted accordingly
Fiber weight (g/㎡) 400±5%
Prepreg weight (g/㎡) 666±5
Prepreg resin content (%) 40±3
Out-life at 20℃ 25 Days
Storage life at 0℃ 4 months

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 

  • 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 the 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.

Options on resin systems for Prepregs

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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