With a high Boron Oxide content and a closed-cell structure, BOROSHIELD™ BLOCK, provides excellent resistance to acidic environments and, thanks to its impermeable structure, prevents flue gases from penetrating the protected surface.
BOROSHIELD™ BLOCK, is lightweight, has low thermal conductivity, and delivers reliable performance against condensed acids and waste gases.
BOROSHIELD™ BLOCK, is designed to protect stacks and flue gas ducts in coal-fired power plants and other industrial facilities against the adverse effects of flue gas.
Its multifunctional structure provides thermal insulation and acid resistance, delivering excellent performance on concrete, brick, steel and FRP surfaces.
Prevents corrosion caused by flue gas exposure
Prevents adverse effects caused by waste gas, moisture and condensation
Stable physical and geometric structure without deformation between –40℃ and 400℃
High strength and low thermal expansion
Closed-cell structure with excellent insulation performance
Easy to process thanks to its lightweight structure
| Description | Unit | Specification | Test Standard |
| Density | kg/m3 | 190 - 220 | ASTM C303 |
| Compressive Strength | MPa | ≥ 1,4 | ASTM C165 / ASTM C240 |
| Flexural Strength | MPa | ≥ 1,0 | ASTM C203 |
| Maximum Temperature Resistance | °C | 450 | |
| Moisture Absorption (Surface Wetting Only) | % | Max. 0.20 | ASTM C552 / ASTM C240 |
| Combustibility | - | Non-combustible (No) | ASTM E136 |
| Linear Coefficient of Thermal Expansion | K-1 | ≤ 5,5 × 10-6 / °C | ASTM E228 |
| Thermal Conductivity (at 38°C Mean Temperature) | W/(m·K) | ≤ 0,09 | ASTM C177 / ASTM C518 |
| Product Size | mm | 229 × 152 × 51 | ASTM C552 TABLE 2 |
| Color | - | Black | - |
| Appearance | - | Solid | - |
| Shelf Life | - | Unlimited | - |
| Description | Content (％) |
| B 2 O 3 | ≥ %10 |
| SiO2 | ≥ %70 |
| Product Type | Packaging Format |
| BOROSHIELD™ BLOCK 1½" (38mm)×6"(152mm)×9"(229mm) | 60 Blocks / Box |
| BOROSHIELD™ BLOCK 2" (51mm)×6"(152mm)×9"(229mm) | 48 Blocks / Box |
ELASTOSEAL™ Adhesive Membrane is an asphalt-urethane based elastic mastic formed by on-site mixing of Parts A and B. It provides high chemical resistance to acids, alkalis and salt solutions.
ELASTOSEAL™ Adhesive Membrane, used together with BOROSHIELD™ BLOCK, is designed with the composition and effects of flue gases emitted by coal-fired power plants in mind. Used as a bonding compound, the membrane also forms a chemically protective layer beneath the BOROSHIELD™ BLOCK layer. Together with BOROSHIELD™ BLOCK, it can be applied to concrete, brick, steel and FRP surfaces.
ELASTOSEAL™ Adhesive Membrane is also used to form horizontal and vertical joints between blocks. When applied over firebrick, it forms a lining layer with a different viscosity.
Superior corrosion protection against flue gas exposure
Retains flexibility throughout its service temperature range
Excellent chemical resistance to corrosive minerals present in acid and salt-solution vapors
Flowable and elastic structure that fills hairline cracks in concrete or brick surfaces
| Description | Unit | Results / Specification | Test Standard |
| Part A - Resin | |||
| Color | - | Black | |
| Density | g/ml | 1.20 - 1.30 | |
| Shelf Life (at 25-40°C ambient temperature) | months | 12 | |
| Shelf Life (at ambient temperature below 25°C) | months | 24 | |
| Packaging | - | 20 kg per plastic container | |
| Part B - Hardener | |||
| Color | - | Light Yellow | |
| Density | g/ml | 1.0 - 1.1 | |
| Shelf Life (at 25-40°C ambient temperature) | months | 12 | |
| Shelf Life (at ambient temperature below 25°C) | months | 24 | |
| Packaging | - | 1 kg per plastic bottle | |
| Part A and Part B Mixture | |||
| Color After Mixing | - | Black | |
| Mixing Ratio (Part A : Part B) | - | 20 : 1 | |
| Pot Life | minutes | ≥ 50 | |
| Tensile Strength | MPa | ≥ 1.50 | ASTM D 412 |
| Elongation at Break at 24°C | % | ≥ 150 | ASTM D 412 |
| Lap Shear Strength (Adhesion to Steel Surface) | MPa | ≥ 1.00 | ASTM D 1002 |
| Adhesion Strength (Pull-Off Strength) | MPa | ≥ 1.00 | ASTM D4541 / ISO 8339 |
ANCHORPRIME™ EP Primer is a polyamide epoxy primer consisting of high-solids Part A and epoxy primer hardener Part B. Conventional spray application is recommended, although it may also be applied by brush or roller. The recommended dry film thickness is 40μm - 80μm.
ANCHORPRIME™ EP Primer is applied to properly prepared steel surfaces (abrasive blasting and cleaning) before ELASTOSEAL™ Adhesive Membrane and BOROSHIELD™ BLOCK application to provide corrosion protection.
It can be applied to stainless steel, carbon steel and non-ferrous alloy surfaces forming stacks and flue gas ducts.
Prevents rust formation on abrasive-blasted steel surfaces
Provides protection against external effects before lining application thanks to its wide application-thickness tolerance
Provides optimum surface adhesion before ELASTOSEAL™ Membrane and BOROSHIELD™ BLOCK application
Easy application by conventional spray
Meets VOC (Volatile Organic Compound) emission standards ( <3.5 lb/gal, 0.42 kg/l )
Contains no lead or heavy metals
| Description | Unit | Results / Specification | Test Standard |
| Part A - Resin | |||
| Color | - | Red | |
| Density | g/ml | ≥ 1.50 | |
| Solid Content (by Weight) | % | ≥ 75 | GB/T1725-2007 |
| Shelf Life (at 25-40°C ambient temperature) | months | 12 | |
| Shelf Life (at ambient temperature below 25°C) | months | 24 | |
| Packaging | - | 18 kg (Metal pail) | |
| Part B - Resin | |||
| Color | - | Yellowish Brown | |
| Density | g/ml | ≥ 0.90 | |
| Shelf Life (at 25-40°C ambient temperature) | months | 12 | |
| Shelf Life (at ambient temperature below 25°C) | months | 24 | |
| Packaging | - | 3.6 kg (Metal can) | |
| Part A and Part B Mixture | |||
| Mixing Ratio (Part A : Part B) | - | 5 : 1 | |
| Color After Mixing | - | Red | |
| Pot Life | minutes | ≥ 120 | GB/T13477.5-2018 |
| Adhesion Strength | MPa | ≥ 2.00 | ASTM D 4541 |
| Lap Shear Strength | MPa | ≥ 2.00 | ASTM D1002 |
| Service Temperature | °C | -40 ~ 150 | |
| Dry Film Thickness | µm | ≥ 40 | |
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