Popis
Air Set Cements set or cure through loss of moisture by evaporation. Atmospheric conditions therefore affect the drying rate. Air Set Cements are used mainly in thin film applications (applied in thicknesses less than 1/4″).
Selection Criteria for Cements:
1. Type of Application Potting, sealing, encapsulating, assembling, bonding. Is a thick or thin film of cement required? This dictates whether or not an air set or a chemical set cement should be used.
2. Thermal Considerations What is the maximum temperature that the cement must withstand? What degree of thermal conductivity is needed? What degree of thermal expansion is allowed? These parameters are then matched to the appropriate cement.
3. Substrate What materials will the cement be in contact with?
4. Application Considerations Pot life, set time, method of dispensing, batch size, cure procedure.
5. Miscellaneous Considerations Porosity, moisture absorption, electrical resistance, volume stability, clearances/tolerances.
SPECIFICATIONS:
OMEGABOND 300 – for Assembling, Sealing, Insulating. One part cement, just mix with water.
Temperature up to 980°C.
OMEGABOND 400 – for Coating, Embedding, Insulating. One part cement, just mix with water.
Temperature up to 1425°C.
OMEGABOND Thinning Liquid, used to dampen porous substrates before application of mixed OB-300 or OB-400 cements
