Release Agent Selection for Composites
| Factor | FEP Film | PVA Solution | Wax Paste | Semi-Permanent |
|---|---|---|---|---|
| Initial Cost | $$$ | $ | $ | $$ |
| Cost per Release | $$ | $ | $ | $ |
| Application Time | 2 min (lay film) | 15 min (spray+dry) | 20 min (apply+buff) | 10 min (wipe) |
| Release Quality | Excellent | Good | Fair–Good | Good |
| Surface Contamination | Zero | Water-soluble residue | Wax transfer possible | Silicone trace |
| Secondary Bonding | Ready | Requires cleaning | Requires cleaning | Requires cleaning |
| Temperature Limit | 200°C | 80°C | 120°C | 200°C |
| Reuse | 5–20 cycles | Single use | Single use | 5–30 cycles |
Decision Guide
- Aerospace prepreg (autoclave) → FEP film (zero contamination requirement)
- Tooling prototype (hand layup) → PVA or wax (low cost, single use)
- Production RTM (>50 parts/mold) → Semi-permanent (best per-cycle economics)
- Medical composite → FEP film (biocompatibility, no transfer)
Need a Sample or Quote?
Resinspot supplies all composite chemicals mentioned above. Low MOQ, sample-friendly, reply within 24 hours.