Remix each of the 2 components (A and B part) every time before using. Mix Part A and Part B components according to recommended weight ratios.
The two components are thoroughly mixed using an electrical or pneumatic mixer, on a low speed setting so as to limit the inclusion of air in the mixture. A dispensing machine can also be used. The mixing can be made with a dynamic mixing head or a static mixer.
The mixture of the two components should be degassed to remove air bubbles which would reduce the mechanical and dielectric properties. Degassing is generally performed in a vacuum of 30 to 50 mbars for about ten minutes, releasing the vacuum twice in the chamber.
BLUESIL™ ESA 7252 QC A & B can be poured on to metals, glass, laminates or molded articles containing organic resins or silicones, or on all other materials. It is recommended to pour slowly the degassed BLUESIL™ ESA 7252 QC A & B mixture at the lowest point of the volume to be filled, to prevent the formation and entrapment of air bubbles. The container should not be filled completely, to allow the BLUESIL™ ESA 7252 QC A & B to expand at service temperatures.
At a temperature of 23°C, BLUESIL™ ESA 7252 QC A & B cures in approximately 8 hours.
Curing can be accelerated by external heat, and the higher the temperature the faster curing will be.
For example, at 150°C the product cures in about 5 minutes. Certain materials that the
BLUESIL™ ESA 7252 QC A & B may be in contact with when curing could inhibit the reaction.
Especially troublesome materials are: sulphur-containing cured natural and synthetic rubber
compounds (neoprene, latex, SBR), tin catalyzed silicone rubbers, amine catalyzed epoxies, PVC
stabilized with tin salts and some polyurethane elastomers.
An object encapsulated with BLUESIL™ ESA 7252 QC A & B can be repaired simply by cutting
away the ESA and replacing the missing elastomer with new BLUESIL™ ESA 7252 QC A & B,
which adheres very strongly to itself with no need for a primer.
|STORAGE -5°C ||Store in a cool, dry place with adequate ventilation. Keep away from incompatible materials, open flames, and high temperatures. Store in tightly closed original container. equipped with a degassing device. Suitable containers: polyethylene. Steel drums coated with epoxy-resin.||Please consult the Safety Data Sheet of this product.|
BLUESIL ESA 7252 QC B
BLUESIL™ ESA 7252 QC A & B is a quick curing two-component silicone elastomer which cures at room temperature, cure can be acceleration by the application of heat.
BLUESIL™ ESA 7252 QC A & B is supplied as a viscous liquid which is transformed, which after mixing and curing becomes a strong, elastic elastomer.
2 Part RTV
- Outstanding flame resistance
- Good thermal conductivity: dissipation of heat
- Low viscosity
- Fast curing product
- Non corrosive
- Potting: protection of electrical component, connection / junction box
- Encapsulating: connectors, captors, sensors in on board electronics
- Thermal and fire protection in aerospace
Asia Pacific;Europe Middle East Africa;Central and South America;North America
|For information about Storage and Shelf Life for this product, please download the Technical Data Sheet.|