WACKER® Crosslinker W

1 of 217 products in this brand
WACKER® Crosslinker W is a hydrogenpolysiloxane that contains a high percentage of reactive Si-H groups. It is specifically designed for the thermal curing of addition-crosslinking silicone rubbers, both solvent-based and solvent-free. The product exhibits high reactivity, allowing for good adhesion to the substrate. Additionally, it has low volatility and is free of solvents, halogens, and heavy metals.

Functions: Crosslinking Agent

Compatible Polymers & Resins: Silicones

Features: Good Adhesion, High Reactivity, Low Volatility

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Plastics & Elastomers Functions
Technologies

Features & Benefits

Applications & Uses

Compatible Polymers & Resins
Cure Method
Application Details

WACKER® CROSSLINKER W is employed in the curing of addition-crosslinking solvent-based and solvent-free silicone rubbers.

Processing

Should be mixed thoroughly with the silicone rubber according to the data sheet or brochures of the respective product.

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Density (at 23°C)1g/cm³
Hydrogen Content1.5wt %
Kinematic Viscosity (at 25°C)23mm²/sDIN 51562-1
Properties
  • High reactivity
  • Enabling good adhesion to the substrate
  • Low volatility
  • Free of solvents, halogens, heavy metals

Safety & Health

Safety Notes

Thermal stability

Provided that moisture is excluded and heating time is short, decomposition only occurs at temperatures greater than 300°C. Exposure to moisture results in decomposition at much lower temperatures, especially in the case of thin layers. Hydrogen is liberated during this process and an increase in viscosity and/or gelling is observed. In the presence of specific catalysts (e.g. organotitanium compounds), WACKER® CROSSLINKER W can undergo thermal depolymerization with liberation of volatile, hydrogen-containing silanes and siloxanes.

Reactivity, dangers

In the presence of specific catalysts (acids, amines, metals, metal salts, platinum catalysts), WACKER® CROSSLINKER W may react with water, alcohols and similar strong proton donors to liberate hydrogen. The reaction maybe particularly vigorous in the presence of traces of alkaline substances in the homogeneous mixture. Direct contact between WACKER® CROSSLINKER W and alkalies should be avoided at all costs. The same applies to strong oxidizing agents.

Packaging & Availability

Country Availability
Regional Availability
  • Africa
  • Asia
  • Europe
  • Latin America
  • Middle East
  • North America
  • Oceania
Packaging Information

This product is available in 5 kg canisters and 950 kg IBCs.