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IOTA HTV 314 is a general‑purpose fumed high‑temperature‑vulcanized silicone rubber, covering a full range of hardness grades. It features fast vulcanization speed, high mechanical strength and excellent processability. The material has passed ROHS, REACH and LFGB tests, and is suitable for manufacturing protective sleeves, kitchenware components, silicone wallets, silicone watch bands and other conventional silicone goods.
This series is formulated for peroxide curing with DBPH‑50. Reference curing condition: 1% addition of 50% DBPH peroxide, compression molding at 175℃ for 5 min under 15 MPa, tested on 2 mm‑thick test specimens. The table below lists typical performance data for reference only and shall not be treated as formal product specifications.
| Item | IOTA HTV 314‑30 | IOTA HTV 314‑40 | IOTA HTV 314‑50 | IOTA HTV 314‑60 | IOTA HTV 314‑70 | IOTA HTV 314‑80 |
|---|---|---|---|---|---|---|
| Appearance | Translucent | Translucent | Translucent | Translucent | Translucent | Translucent |
| Plasticity | 140 | 180 | 210 | 240 | 280 | 310 |
| Hardness (Shore A) | 30 | 40 | 50 | 60 | 70 | 80 |
| Density(g/cm³) | 1.08 | 1.11 | 1.14 | 1.17 | 1.20 | 1.22 |
| Tensile Strength(MPa) | 9 | 9.5 | 11 | 10.5 | 10.5 | 9 |
| Elongation at Break(%) | 900 | 700 | 650 | 600 | 450 | 350 |
| Tear Strength(kN/m) | 18 | 22 | 25 | 30 | 30 | 30 |
Notes:
- All typical data above are obtained with 1.0 % DBPH peroxide, compression cured at 175 ℃ for 5 min on 2 mm test sheets.
- Do not use these data directly for formal product specification. Please contact our sales team for formal specification confirmation.
| Check Item | Remarks |
|---|---|
| Hardness Grade | Select Shore A 30‑80 grades according to compression set, resilience, hand‑feel and assembly requirements of finished parts |
| Curing Agent Dosage | DBPH loading shall be fine‑tuned according to equipment and part thickness; do not copy reference ratio blindly |
| Compliance Documents | Cross‑check model and batch number for ROHS / REACH / LFGB reports. TDS offers technical parameters and cannot replace compliance statements alone |
| Post‑curing | Kitchen‑ware silicone articles require proper post‑baking to satisfy food‑contact end‑use requirements |
Q1: Can all grades of IOTA HTV 314 be directly used for food‑contact articles?
A: Raw‑material LFGB test does not guarantee automatic compliance of final goods. Finished silicone articles still need verification considering part thickness, molding process, post‑baking, contacting media and service temperature before food‑contact application.
Q2: Should I strictly adopt 1 % DBPH addition for all products?
A: It is only laboratory reference condition. For thick‑wall articles or different compression molding machines, perform vulcanization trials to adjust peroxide dosage, temperature and dwell time to avoid under‑cure or bubble defects.
Q3: Can I use raw material beyond 18‑month shelf‑life?
A: Do not feed directly into production. Retest critical indexes including hardness, tensile strength, elongation and tear strength. Proceed only when test results meet usage requirements.
Q4: Does translucent raw rubber guarantee high transparency of finished goods?
A: The gum stock is translucent. Final transparency is affected by curing agent, color masterbatch, fillers and molding conditions. Sampling trial production is recommended for high‑transparency requirements.
