Solar 120

Solar  120

Solar 120

Room Temperature Curing Silicone Sealant (RTV-2)

ALSTONE SOLAR 120 is a non-slump, condensation curing RTV-2 silicone sealant for the solar industry. When processed with a curing agent of the ALSTONE Catalyst T 77 series, a self bonding and durable silicone sealant is formed. Cured ALSTONE SOLAR 120 shows long-term stability against weathering, moisture and UV light. The silicone elastomer may continously be exposed to constantly changing climatic conditions, UV radiation and temperatures as high as 180 °C (356 °F) without damage.

PROPERTIES

UNCURED:

  • Non-slump paste
  • Fast curing at room temperature
  • To be cured with ALSTONE Catalyst T 77 or ALSTONE Catalyst T 77 PLUS (recommended mixing ratio: 10:1)

CURED:

  • Medium hardness
  • Primerless adhesion to many substrates (glass, ceramics, metals, plastics and powder coatings.
  • Recommended service temperature range -50 °C to +180 °C
  • Suitable for bonding applications.

SPECIFIC FEATURES

  • Condensation-curing
  • Electrically insulating
  • Non-slump
  • Self-adhesive
  • Shear thinning
  • Thixotropic
  • Two-component
  • UV & weathering-resistant

APPLICATIONS

  • Frame Bonding
  • Production of CPV Modules
  • Solar Thermal Energy

APPLICATION DETAILS

  • Fast-curing multi-purpose adhesive for the solar energy industry
  • Typical fields of application: frame sealing, bonding of junction boxes, fixation of backrails and mirror elements

PROCESSING

MIXING AND CURING:
ALSTONE SOLAR 120 is processed in combination with a curing agent, such as ALSTONE Catalyst T 77 or ALSTONE Catalyst T 77 PLUS. Prior to application the two compounds should be thoroughly mixed, either manually or by automatic metering lines equipped with static or dynamic mixing devices. The recommended mixing ratio is 10:1 by weight.
Potlife and curing speed can be modified within limits by adjusting the ratio of base compound (ALSTONE SOLAR 120) to curing agent (ALSTONE Catalyst T 77 or ALSTONE Catalyst T 77 PLUS). Varying the mixing ratio between 8:1 and 12:1 usually has a small effect on the properties of the cured sealant. However, if the mixing ratio differs substantially from the recommended scope, preliminary tests should be carried out to check the cured material’s suitability. General information about pot life and resulting curing times are given in the respective tables "Catalyzed".
Moreover Curing speed can be slightly accelerated by raising the temperature. Heating, however, must not exceed 60 °C before curing is completed.
After completion of the vulcanization process the product may continuously be exposed to constantly changing climatic conditions, UV radiation and high temperature without damage. Cured ALSTONE SOLAR 120 usually shows good primerless adhesion to many substrates, in particular to those materials which are typical of the solar industry (glass, anodized aluminium, Tedlar® films, PVF, PVDF, PPO, PPS etc.).

 

PACKAGING AND STORAGE


STORAGE

  • Store in a dry and cool place.
  • The 'Best use before end' date of each batch is shown on the product label.
  • Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.

 

SAFETY NOTES


During cure ALSTONE SOLAR 120 releases a total of 1.5 % alcohol. These vapours should not be inhaled for long periods or in high concentrations. Hence ventilation of the work place is recommended.

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