Carboline Thermaline Heat Shield is a two-component, extreme performance coating for hot, cryogenic, and cycling exposures. Thermaline Heat Shield contains a unique blend of plate-like reinforcing pigments fortified with an inert polymeric matrix. The resulting film provides an outstanding barrier against corrosives and harsh exposures typically seen in elevated temperature environments.

This versatile coating is ideal for all piping, vessels and equipment operating from cryogenic conditions up to 1200°F. It is particularly well suited to prevent corrosion under insulated equipment/piping for both carbon steel substrates and stainless steels. This fortified coating has superior shop handling properties over standard silicone coatings (see Curing). It is recommended for CS-6 and SS-5 systems of NACE SP0198 Standard Practice for coatings to control corrosion under insulation (CUI).

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• Features and Benefits
• Product Specification
• Drying Times
• Surface Preparation
• Application Methods
• Application Conditions
• Health and Safety

Features and Benefits

• Unique reinforced but flexible polymer film
• Versatile use from cryogenic to 650°C exposures
• Dries to handle without heat cure 
• Outstanding barrier properties
• Protects steel from thermal wet cyclic conditions
• Suitable for both shop and field application
• Provides corrosion protection even with ambient temperature cure
• Meets ISO 12944-6 C5-M Medium
• Self-priming or apply over Carbozinc 11 primers when uninsulated
• Protects stainless steels from chlorides and stress corrosion cracking
• Very fast recoat times

Product Specification

Drying Times

• These times are based on the recommended dry film thicknesses, 3.5 to 5 mils. Excessive film thickness or inadequate ventilating conditions after application require longer dry times and will cause premature failure in extreme cases. Lower humidity may lengthen dry time
• Note: Avoid rapid temperature excursion for the first heat cycle; particularly early in the cure. A gentle heat rise through 500°F will achieve maximum film durability. For recoat time via brush or roller, follow the dry to handle time (thumb twist test). This product has superior handling properties over standard silicones (harder film) but has some thumbnail softness until it has undergone a heat excursion. In these cases, use padded slings and dunnage. Typical dry-to-ship time is 24 hours

Surface Preparation

Application Methods

Application Conditions

• This product simply requires the substrate temperature to be above the dew point
• Condensation due to substrate temperatures below the dew point can cause flash rusting on prepared steel and interfere with proper adhesion to the substrate
• Special application techniques may be required above or below normal application conditions

Health and Safety

Clean Up

• Use Thinner 2 or acetone
• In case of spillage, absorb and dispose of in accordance with local applicable regulations

Ventilation

• When used in enclosed areas, thorough air circulation must be used during and after application until the coating is cured
• The ventilation system should be capable of preventing the solvent vapor concentration from reaching the lower explosion limit for the solvents used
• User should test and monitor exposure levels to ensure all personnel are below guidelines. If not sure or if not able to monitor levels, use MSHA/NIOSH approved respirator

Caution

• This product contains flammable solvents
• Keep away from sparks and open flames
• All electrical equipment and installations should be made and grounded in accordance with regulations
• In areas where explosion hazards exist, workers should be required to use non-ferrous tools and wear conductive and non-sparking shoes

• Refer to the product data sheet and safety data sheet in the attachments section above for further details