Description
Chem-Set SI Surface Insensitive Cyanoacrylates are modified ethyl cyanoacrylate adhesives designed for fast bonding on difficult-to-bond or less reactive surfaces. These adhesives maintain rapid cure speeds across a wide range of substrates while offering the same viscosity flexibility as standard CA grades.
Available in viscosities from ultra-low to non-sag gel, the SI Series allows users to match flow and gap-filling requirements while maintaining consistent performance. All grades cure rapidly at room temperature using ambient moisture, delivering handling strength in seconds.
Key Product Details
| Property | Value |
|---|---|
| Chemistry | Modified Ethyl Cyanoacrylate |
| Appearance | Clear |
| Available Viscosities | 5, 30, 120, 500, 1000, 1500, 2000, 3200, 5000 cps, 100,000+ cps (Gel) |
| Fixture Time | 5–10 seconds (most grades) |
| Fixture Time (Gel) | 25–30 seconds |
| Bond Strength (Steel) | >2,200 PSI |
| Bond Strength (Aluminum) | >1,800 PSI |
| Bond Strength (ABS/PVC/Plastics) | ~900 PSI |
| Cure Mechanism | Moisture cure |
| Electrical Properties | Volume resistivity: 2 to 10 x 10¹⁵ |
| Chemical Resistance | 100% strength retention after 500 hrs (gasoline, IPA, ethanol, motor oil) |
Data consistent across viscosity grades
Performance in Production
- Designed for consistent cure on difficult or less reactive substrates
- Fast fixture times of 5–10 seconds across most viscosities
- Gel version provides non-sag performance for vertical applications
- Low viscosity grades wick into tight assemblies and can be post applied
- Higher viscosities compensate for larger gaps
- Cure speed increases with humidity and tighter bond lines
- Maintains bond strength after prolonged chemical exposure
Common Applications
- Bonding plastics including ABS, PVC, polycarbonate, and acrylic
- Metal bonding including steel, aluminum, and brass
- Rubber and elastomer bonding including neoprene, nitrile, and EPDM
- Applications involving less reactive or contaminated surfaces
- Wicking into pre-assembled parts (low viscosity grades)
- Gap filling and vertical bonding (high viscosity and gel grades)
Available Sizes or Variants
Viscosity Options (User Selectable):
- 5 cps
- 30 cps
- 120 cps
- 500 cps
- 1,000 cps
- 1,500 cps
- 2,000 cps
- 3,200 cps
- 5,000 cps
- 100,000+ cps (Gel, non-sag)
Packaging Options (Dependent on Grade):
- 1 oz bottle
- 2 oz bottle
- 1 lb bottle
- 4.4 lb bottle
- 20 gram (gel)
- 1/10 gallon (gel)
Alternative Formulations (Same Platform, Different Performance)
- Chem-Set CA Series (Standard Ethyl)
General purpose cyanoacrylate for fast bonding on most substrates - Chem-Set TS Series (Toughened)
Designed for improved impact resistance and flexibility
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