KHT Amine Silicone Curing Catalyst
Name
KHT Amine Silicone Curing CatalystProduct description
A specialised liquid amine-type vulcanising agent for crosslinking two-component room-temperature-curing silicone compounds, SKTN rubbers and hydroxyl-terminated polymers.
KHT acts as an internal primer and significantly improves the silicone’s inherent adhesion to substrates without additional priming.
TDS
Our products
Amine catalyst for room-temperature curing of silicone compounds with improved adhesion to metals, plastics, glass and ceramics.
Fields of application
- Curing of silicone potting and sealing compounds.
- Encapsulation of electronic equipment and PCBs requiring enhanced adhesion.
- Polymerisation of organosilicon sealants, SKTN rubbers and special-purpose pastes.
Benefits
- Improves adhesion to metals, plastics, glass and ceramics.
- Provides uniform bulk curing without a layer-depth limitation.
- Allows gel time and pot life to be adjusted through catalyst concentration.
- Does not impair the dielectric strength of electrical-insulating silicones.
- Does not promote corrosion of most structural metals and alloys in the cured compound.
Application methods
- Add 3–5 wt.% KHT to the silicone base using accurate scales or a syringe.
- Mix immediately for 3–5 minutes, paying particular attention to the bottom and walls of the container.
- Apply or pour into the prepared enclosure or mould within the available pot life.
Application
Reducing the dosage to 1 wt.% slows the process; increasing it to 7 wt.% sharply accelerates gelation. At the standard dosage, pot life is 15–45 minutes.
Storage
The catalyst reacts with atmospheric moisture: close the container tightly immediately after dispensing.
Store in the original container in a dry, cool place protected from sunlight, heat and open flame.
Safety information
- Use with effective supply and exhaust ventilation.
- Wear chemically resistant gloves, safety glasses and protective clothing.
- In case of skin contact, wash immediately with plenty of soap and water.
Physico-chemical properties
| Parameter | Value |
|---|---|
| Appearance | Homogeneous, clear, colourless liquid |
| Curing system | Amine, room-temperature vulcanisation |
| Recommended dosage | 3–5 wt.% of the silicone base |
| Allowable range | 1–7 wt.% |
| Pot life at 3–5 wt.% | 15–45 min |
| Onset of cure | 0.5–6 h |
| Full polymerisation | 72 h |