RTM

RTM is the process designed for the impregnation of multiple reinforcement layers using pressure (and in some cases vacuum) in a closed mold.

The resin system is injected under pressure, which is then maintained throughout the polymerization process.

High Pressure RTM (or Fast RTM) is based on the same principle, but unlike standard RTM, this process requires significantly higher mixing, injection and curing pressures (typically 15 bars or greater).

Main benefits
:

  • Fast RTM process meets the automotive industry’s requirements with regard to automation and cycle time in mass production
•
  • High quality composites
  • Good surface finish
  • Closed process
  • Design flexibility

 


Product Designation Features Mixed Viscosity
(cpa/°F)
Gel Time
(Min./°F)
Cure Cycle
(Time/°F)
Tg (DSC/DMA)
(°F)
Flexural Strength
(kpsi)
Fracture Properties
K‚á´„
(ˆšin*lb/in²)
G‚á´„ (In*lb/in²)
Araldite LY 1564 / Hardener XB 3403 Long open time 250 – 300 40 – 50 / 176
17 – 23 / 212
8 – 13 / 230
8hrs / 176 158 – 166 15.2 – 16.7 1,044 – 1,154 1.48 – 1.71
Araldite LY 1564 / Hardener XB 3458 Fast / Low viscosity / HP – RTM 250 – 300 30 – 37 / 104
6 – 10 / 140
2 – 4 / 176
10 min / 176
20 min / 212
198 – 201 18.1 – 20.3 1,349 – 1,649 2.39 – 2.96
Araldite LY 3585 / Aradur 3475 Moderate viscosity / Fast cure 900 – 1,100 36 – 50 / 104
1 – 2 / 230
2 min / 239 221 – 239 N/A 728 – 819 0.92 – 1.26
Araldite LY 1564 / Aradur 22962 Low viscosity / Intermediate temperature use 120 – 150 20 – 30 / 176
8 – 13 / 212
4 – 7 / 230
15 min / 248
2 hrs / 302
273 – 302 17.4 – 19.6 879 – 1,044 1.14 – 1.48
Araldite LY 1564 / Aradur 2954 Low viscosity / High temperature resistance 200 – 300 34 – 45 / 176
16 – 18 / 212
3 – 4 / 284
1 hr / 176
8 hrs / 284
294 – 317 17.4 – 18.0 758 – 835 0.8 – 1.0
Araldite LY 1556 /
Aradur 3473
Low viscosity / High temperature resistance 5,200 – 6,000 68 – 78 / 248 2 hrs / 248
4 hrs / 356
370 – 375 16.0 – 17.4 720 – 800 1.04 – 1.25
Araldite LY 5210 / Aradur 3473 Very high temperature resistance 1,150 – 1,350 75 – 90 / 248
23 – 29 / 300
9 – 11 / 350
2 hrs / 212
2 hrs / 284
2 hrs / 400
410 – 420 17.1 630 – 700 .65 – .80

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