Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- Product Highlights
- One-part, self-leveling, solvent-free silicone material
- Cures at room temperature upon exposure to atmospheric moisture
Applications & Uses
- Applications
- Applications
- Bonds aggressively to most surfaces including: glass, ceramics, most metals, natural and synthetic fibers, wood, painted surfaces, many plastics and other silicone rubbers
- Instructions for Use
Apply R4-1140, supplied in cartridges, with the use of an appropriate caulking gun. Do not store alcohol near the worksite as traces of alcohol inhibit the catalytic system of the adhesive.
Surface Preparation
Thoroughly clean surfaces being bonded or built-up with silicone adhesive using a non-oily cleaner or mild soap to remove any surface contaminants. Do not use synthetic detergents or oil-based soaps, as they may be absorbed and subsequently leach out. Rinse copiously with hot water and follow with a thorough rinse using distilled water. Use compatible degreasers to clean metal surfaces.
Bonding Applications
Spread a layer of silicone adhesive on one of the surfaces. Squeeze both surfaces together to bond. Apply sufficient pressure to ensure full contact without forcing the silicone adhesive from between the pieces.
Curing Time
Curing or vulcanization time depends upon the thickness of the silicone adhesive layer, relative humidity, and accessibility of atmospheric moisture to the curing adhesive. For sections of typical thickness, a relative humidity level between 20-60% is recommended to cure the adhesive at room temperature.
Generally the adhesive forms a thick, tack-free outer skin for thick section films within a few minutes after application. The vulcanization rate slows when exposing very thin films to excessive humidity ( 80% relative air humidity). For films below 80 microns, the relative air humidity should be within 30 - 50%.
Because R4-1140 cures upon exposure to moisture vapor, keep the tubes tightly closed when not in use. A plug of cured material may form in the tip of the tube. Remove or dispense the plug from the tube before using.
Properties
- Appearance
- Translucent
- Typical Properties
- Cured Properties
| Value | Units | Test Method / Conditions | |
| Extrusion Rat e | 100.0 | g/minute | — |
| Durometer Type A | 25.0 | — | — |
| Elongat ion | 750.0 | % | — |
| Flow Rat e | 2 (50.8 ) | in (mm) | — |
| Mix Rat io | 1 PART | — | — |
| Specific Gravity | 1.12 | — | — |
| Stress at Strain | 110 (0.76) | psi (MPa) | — |
| Tack Free Time | 10.0 | minutes | — |
| Tear | 100 (17.64 ) | ppi (kN/m) | — |
| Tensile | 1,400 (9.66 ) | psi (MPa) | — |
| Volat ile Content | 2.4 | % | — |
| Value | Units | Test Method / Conditions | |
| Cure System | Acetoxy | — | — |
| Cure at RTV | 72.0 | hours | — |
Packaging & Availability
- Country Availability
- Regional Availability