PDMS Silicone Elastomer (Base SE-1700, High Viscosity, Clear)
General
Code: 253841
PDMS Silicone Elastomer (Base)
PDMS Silicone Elastomer (Base)
To create a complete texture:
use Base 10 sections: Curing Agent 1 part mix well
If there are bubbles May need to expel air bubbles as well Vacuum pot
Leave it at room temperature for about 2 hours, will cure completely by itself.
SYLGARD™ 184 vs DOWSIL™ SE 1700 (Technical Comparison)
SYLGARD™ 184 and DOWSIL™ SE 1700 are both platinum‑cured PDMS silicone elastomers from Dow, but they are designed for different mechanical behavior and applications. The comparison below is intended for materials engineers or formulators.
SYLGARD™ 184 vs SE 1700
| Property | SYLGARD™ 184 | DOWSIL™ SE 1700 |
|---|---|---|
| Silicone type | Two‑part PDMS elastomer | Two‑part PDMS elastomer |
| Typical mix ratio | 10:1 (base:curing agent) | Usually 10:1 |
| Viscosity (mixed) | ~3500 mPa·s | Higher viscosity |
| Shore hardness | ~43 Shore A | Softer elastomer (lower modulus) |
| Optical clarity | Transparent | Often opaque/white |
| Elastic modulus | Higher (stiffer) | Lower (more flexible) |
| Typical cure | Room‑temperature cure or heat‑accelerated | Room‑temperature cure or heat |
| Main applications | Microfluidics, encapsulation, optics | Stretchable electronics, soft robotics |
| Solvent swelling | Moderate | Higher swelling tendency |
Key functional differences
1) Mechanical stiffness
- SYLGARD™ 184: medium‑stiff elastomer, higher Young’s modulus, more dimensionally stable.
- SE 1700: much softer elastomer, higher elongation, more flexible and stretchable (often chosen for large deformation).
2) Solvent absorption
SE 1700 generally shows higher solvent absorption and swelling than SYLGARD™ 184, consistent with a looser network structure.
3) Optical properties
- SYLGARD™ 184: optically clear; commonly used in optics, microfluidic chips, and lenses.
- SE 1700: typically more opaque; less preferred for optical devices.
4) Processing
Both are platinum addition‑cure, 2‑component systems (mix and degas before casting). Practical tendencies:
| Aspect | Often better suited |
|---|---|
| Mixing and degassing | SYLGARD™ 184 |
| Very soft structures | SE 1700 |
| Mold replication / microfluidic molds | SYLGARD™ 184 |
Typical applications
SYLGARD™ 184
- Microfluidic chips
- MEMS devices
- Optical elastomers
- Electronic encapsulation
- Soft lithography
SE 1700
- Stretchable sensors
- Soft robotics
- Dielectric elastomer actuators
- Flexible electronics
Rule of thumb
| If you want | Choose |
|---|---|
| Optical clarity | SYLGARD™ 184 |
| Higher stiffness | SYLGARD™ 184 |
| Very soft elastomer | SE 1700 |
| Large strain / stretch | SE 1700 |
| Microfluidic molds | SYLGARD™ 184 |
Practical note (research use): Many labs blend SYLGARD™ 184 with SE 1700 to tune modulus and swelling, creating intermediate mechanical properties for soft actuators and flexible electronics.
- Cool (15-25C)
- 24 Months from manufacturing or testing date.
- Add at last step. Avoid temperature above 40C.
- Avoid heat above 40C
- 0.00 - 0.00
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