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Thermaguard™ CUI 300

1 of 6 products in this brand
Thermaguard™ CUI 300 is a unique inorganic single component, ambient curing polysiloxane coating formulated specifically to provide corrosion protection to under insulation environments where wet & dry cycling can occur. Novel technology which offers high solids chemistry, low VOC for demanding environmental regulations and safety aspects during hot application. The coating conforms to the NACE SP0198-2017 classification for Corrosion Under Insulation (CUI) in both cryogenic & elevated temperature applications. Through specific formulation technology Thermaguard™ CUI 300 can withstand temperatures from -196 to 300°C, fully curing at ambient conditions eliminating the need for heat curing prior to service. Thermaguard™ CUI 300 has exceptional resistance to thermal cycling, hot saline water immersion & chemical exposure throughout its operating temperature range. Thermaguard™ CUI 300 can be used in both OEM (shop application) & maintenance work due to having surface tolerance to rusted steels, which have been marginally prepared (St 2/3). Additionally, the product can be applied in service to hot equipment operating up to 300°C, removing the need for plant shut down periods.

Product Type: 1K (1 component) Coating

Compatible Substrates & Surfaces: Metal, Stainless Steel, Steel

Features: Chemical Resistant, Corrosion Resistant, Good Thermal Stability

Application Method: Brush, Roller, Spray

Chemical Family: Siloxanes

    Knowde Enhanced TDS

    Identification & Functionality

    Chemical Family
    Product chemistry

    A single component, ambient curing, pure inorganic polysiloxane. Conforms to the NACE SP0198-2017 classification.

    Features & Benefits

    Labeling Claims

    Applications & Uses

    Application Method
    Compatible Substrates & Surfaces
    Cure Method
    Intended applications

    For Under Insulation applications where severe corrosive environments can °Ccur such as salt water immersion & acid exposure in elevated temperatures. Such facilities include, petr°Chemical, chemical plants, offshore, power, refining, and generic pr°Cessing; pipework, vessels, tanks, heat exchangers, stacks, chimneys, steamlines etc. operating within -196 to 300°C temperature range.

    Application methods

    Airless, airspray and brush & roller

    Substrate temperature & conditions

    Ambient substrate temperature application should remain between 10 to 50°C and remain 3°C above the dew point and relative humidity should be 35 - 85% during application. For various temperature applications thinning is:

    •  Thermaguard™ X21; 10 to 60°C
    • Thermaguard™ S100; 60 to 150°C
    • Thermaguard™ S200; 150 to 260°C
    Application

    Airless

    Pump: 30:1 or higher

    Tip size: 0.015 - 0.023 inch

    Pressure: 2321 - 2901 psi / 160 - 200 bar

    Thinning:

    Thermaguard™ X21, 10 to 60°C (0 - 3%)

    Thermaguard™ S100, 50 to 150°C (5 - 10%)

    Remove all mesh filters.

    Airspray (conventional)

    Pressure: 30 psi / 2.1 bar

    Nozzle orifice: 1.8 - 2.2mm

    Thinning: Thermaguard™ X21, 10 to 60°C (4 - 8%)

    Thermaguard™ S100, 60 to 150°C (6 - 10%)

    Thermaguard™ S200, 150 to 260°C (8 - 12%)

    Brush/roller

    Thinning:

    Thermaguard™ X21, 10 to 60°C (0 - 3%)

    Thermaguard™ S100, 60 to 150°C (0 - 10%)

    Thermaguard™ S200, 150 to 260°C (6 - 12%)

    For elevated temperature application, be sure that brush bristle and roller nap are tolerant of the substrate temperatures.

    Mixing

    Thermaguard™ CUI 300 is a single component product, settling can °Ccur during transport & storage. The material should always be mixed using a mechanical agitation ensuring all settled-out pigments are dispersed until a uniform consistency is reached.

    Reactivity

    Thermaguard™ CUI 300 is reactive with moisture, skinning can °Ccur once opened. To prevent skinning keep covered at all times.

    Reducer

    Thermaguard™ X21 (10 to 60°C application)

    Thermaguard™ S100 (60 to 150°C application)

    Thermaguard™ S200 (150 to 260°C application)

    Clean up

    Use Thermaguard™ X21 for cleaning after product use. Ensuring all material is flushed from application equipment.

    Properties

    Typical Properties
    ValueUnitsTest Method / Conditions
    Flashpoint30°CISO 1523
    Specific gravity1.9g/mL
    Temperature resistance-196 to 300°C
    Theoretical spreading rate at 100µm DFT9m2/l
    VOC Content (90 %)96.11g/L
    Volume solids90%

    Technical Details & Test Data

    Surface preparation

    Intended for insulated steel surfaces, both carbon & stainless. Substrates must be clean, dry and free from any contamination. All oil, dirt, grease, dust, foreign material and loose rust must be removed prior to coating.

    Insulated or exterior exposed carbon steel

    Abrasive blast clean to Sa 2½ (ISO 8501-1:2007) or SSPC-SP10. The resulting surface profile (Rz) should be 30 - 50µm. All sharp edges & rough welds should be rounded off.

    Thermaguard™ CUI 300 has surface tolerance to maintenance work applications where tight adhering or flash rusted steel surfaces are present & blasting is not possible. In such circumstances pr°Ceed with the following pretreatment; remove all loose adhering rust & rust scale and follow St 2/3 surface preparation with Rz >30µm prior to application.

    Insulated or exterior exposed stainless steel

    Abrasive sweep clean using a non-metallic & chloride free abrasive (aluminum oxide or garnet). The resulting surface profile (Rz) should be 30 - 50µm. All sharp edges & rough welds should be rounded off.

    System specifications

    Thermaguard™ CUI 300 in a 2-coat application for CUI or exposed corrosion protection as a direct to metal (DTM) coating system.

    Carbon or stainless steel ambient spray, brush or roller (10 to 50°C) application:

    • Thermaguard™ CUI 300: 100 - 150µm DFT
    • Thermaguard™ CUI 300: 100 - 150µm DF

    Application of Thermaguard™ CUI 300 by airless or airspray are the preferred application methods when applied over Sa 2½ prepared carbon steel or abrasively swept stainless steel (Rz >30µm). New build applications should adopt a stripe coating method to ensure edges have adequate film build.

    Maintenance application (St 2/3), brush & roller (10 to 50°C) application:

    • Thermaguard™ CUI 300: 75 - 125µm DFT
    • Thermaguard™ CUI 300: 75 - 125µm DFT
    • Thermaguard™ CUI 300: 75 - 125µm DFT

    At higher temperature applications, further coats maybe necessary to build the film to a total 250 - 300µm DFT.

    Coating & curing schedule

    Spreading rate information

    DFT Theoretical spreading rate
    100 9 m2/l
    150 6.0 m2/l

    Film thickness information

    DFT/WFT Minimum (µm) Maximum (µm)
    Dry film thickness 100 150
    Wet film thickness 111 167

    Drying & recoating information

    Temperature (°C) Touch dry (hours) Overcoating time (hours) Dry to handle (hours)
    3 2 10-18 30-38
    10 1 4 24-30
    23 0.5 2 16-24
    38 0.25 1 8-16
    130 - - -

    Notes: drying times can vary upon different environmental conditions. Coating should be applied within the information supplied to ensure drying & overcoating times are not affected. Product is fully cured from ambient conditions & does not require heating to obtain mechanical & corrosion protection. Unlimited overcoat time even after exposure to elevated temperatures.

    Safety & Health

    Safety precautions

    This product is for use only by professional applicators in accordance with information in this Technical Data Sheet (TDS) and the applicable Material Safety Data Sheet (MSDS). Refer to the product MSDS before using this material. All usage of this product must be kept in compliance with l°Cal, health, safety & environmental conditions & regulations.

    Packaging & Availability

    Packaging

    Single component material

    10 liter cans, 19.10 kg per can.

    Storage & Handling

    Storage & shelf life

    Material should be stored in a dry, shaded environment away from heat & ignition sources. Do not allow material to freeze. Shelf life is minimum 12 months at 23°C.