Sikagard®-170 CR
(former MasterProtect® 170CR)
EPOXY COATING WITH 98% SULFURIC-ACID RESISTANCE
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Sikagard®-170 CR is a high-build, 100% solids epoxy coating. It provides resistance to harsh chemicals, including 98% sulfuric acid, and can be used as a topcoat over epoxy and polyurethane coatings.
- Hard-wearing surface for durable, low-maintenance flooring.
- Chemical resistant for excellent resistance to sulfuric acid and a wide range of industrial chemicals.
- 100% solids system for solvent-free and nearly odor-free application.
- Liquid applied for seamless protection of concrete.
- Usable with aggregate broadcast for a slip-resistant floor finish.
Usage
- Horizontal and vertical
- Chemical-resistant industrial flooring
- Primary containment of water and wastewater
- Secondary containment of many chemicals
- Floors, gutters, and troughs
- Manholes, wet wells, and lift stations
- Walls
- Wastewater treatment plants
- Pulp and paper mills
- Metal-treatment plants
- Battery storage areas
- Production areas
- Food-processing plants
- Waste areas
Advantages
- Hard-wearing surface for durable, low-maintenance flooring.
- Chemical resistant for excellent resistance to sulfuric acid and a wide range of industrial chemicals.
- 100% solids system for solvent-free and nearly odor-free application.
- Liquid applied for seamless protection of concrete.
- Usable with aggregate broadcast for a slip-resistant floor finish.
Packaging
3 Gal (11.4 L) Kit:
- Part A: Two 1 Gal (3.8 L) Pails (Pigmented)
- Part B: 1 Gal (3.8 L) Pail (Clear)
Kit - 14.3 Gallon - 3 (5 Gallon Container Pails)
- Part A: Two- 5 Gal (18.9 L) Pails
- Part B: One- 5 Gal (18.9 L) Pail
Color
Gray
Product Details
Chemical Base
Sikagard®-170 CR is a 100% solids Novolac Epoxy
Shelf Life
2 years when properly stored
Storage Conditions
Store and transport in unopened containers in a cool, clean, dry area. Keep from freezing.
Viscosity
Mixed Viscosity
4,000 cps at 75° F (24° C) | (ASTM D 2393) |
Shore D Hardness
80–82 | (ASTM D 2240) |
Abrasion Resistance
40 L/mil coating | (ASTM D 968) |
Compressive Strength
14,300 psi (99 MPa) | (ASTM D 695) |
Tensile Strength
5,700 psi (39 MPa) | (ASTM D 638) |
Slant Shear Strength
2,640 psi (18.2 MPa), 100% concrete failure after 14-day moist cure | (ASTM C 882) |
Chemical Resistance
Chemical | Results |
Hydrochloric acid, 50% | Regular contact |
Hydrofluoric acid, 50% | Regular contact |
Nitric acid, 25% | Occasional contact |
Sulfuric acid, 10% | Regular contact |
Sulfuric acid, 25% | Regular contact |
Sulfuric acid, 50% | Regular contact |
Sulfuric acid, 98% | Regular contact |
Phosphoric acid, 50% | Regular contact |
Acetic acid ,10% | Regular contact |
Sodium hydroxide, 50% | Regular contact |
Ammonia, 10% | Regular contact |
Bleach concentrate | Regular contact |
Bleach, 5% | Regular contact |
Urea (saturated) | Regular contact |
Sugar (saturated) | Regular contact |
Sodium chloride (saturated) | Regular contact |
Methanol | Regular contact |
Butanol | Regular contact |
Acetone | Occasional contact |
Mineral spirits | Regular contact |
Xylene | Regular contact |
Lubrication oil | Regular contact |
Gasoline | Regular contact |
Skydrol | Regular contact |
Based on 7-day immersion test at 70° F (21° C) after a 7 day cure at 70° F (21° C) and 50% relative humidity
Application
Mixing Ratio
2 to 1 by volume
Ambient Air Temperature
50–120 ° F (10–49 ° C)
Pot Life
30–45 min at 75° F (24° C) | (ASTM D 2471) |
Cure Time
Initial Cure
24 hrs at 75° F (24° C)
Light Traffic
16 hrs at 75° F (24° C)
Full Chemical Resistance
7 days at 75° F (24° C)
Tack Free Time
4–6 hrs at 75° F (24° C)
Coverage
80 ft2 per gal (2 m2/L) at 20 mils
APPLICATION INSTRUCTIONS
- The minimum ambient, surface, and material temperature should be 50° F (10° C) and rising at the time of application.
- Acceptable service temperatures vary depending on the type and frequency of chemical exposure. Contact Technical Service regarding your unique project considerations.
- For professional use only; not for sale to or use by the general public.
- Make certain the most current versions of the product data sheet and SDS are being used.
- Proper application is the responsibility of the user. Field visits by Sika personnel are for the purpose of making technical recommendations only and are not for supervising or providing quality control on the jobsite.
SUBSTRATE PREPARATION
- The surface must be clean, structurally sound, and fully cured for 28 days.
- Mechanically profile the surface of both old and new concrete by shotblasting to ICRI CSP 4, then remove dust by vacuuming.
- Prime with SikaEmaco® P 130
Priming
- Prime the prepared substrate with SikaEmaco® P 130. Apply SikaEmaco® P 130 at a coverage rate of 150–300 ft2/gallon (3.6–7.4 m2/L). Refer to the SikaEmaco® P 130 data sheet for more details or call Sika Technical Service.
- Allow SikaEmaco® P 130 to become tack-free (approximately 3–4 hours) before applying Sikagard®-170 CR.
MIXING
- Precondition all components to 70° F (21° C) for 24 hours before using.
- Thoroughly stir each separate component (epoxy resin Part A and the hardener Part B) before mixing the 2 components together.
- The mix ratio by volume is 2:1 (A:B). Combine 1 part B with 2 parts A in a clean, suitably sized container. Scrape the sides of the containers to remove as much material as possible to ensure an accurate mixing ratio.
- Mix the components together using a slow-speed (400–600 rpm) drill with a Jiffy mixer for at least 3 minutes until uniform in color with no streaks of color in the mixture.
APPLICATION
As A Coating For Concrete Substrates
- Apply the mixed product to the clean, primed surface with a roller or brush. Use the shortest nap roller suitable for the prepared substrate profile.
- Backroll the coating to ensure good wetting of the substrate, uniform thickness of the coating, and removal of any roller marks.
- Apply two 20-mil coats at the rate of 80 ft2/ gal (2 m2/L) per coat.
- To make the coating slip-resistant, broadcast clean, dry sand into the first coat while it is wet. Apply sand to the point of saturation (approximately 80 lbs/100 ft2 [3.9 kg/m2]). When the coating is dry, sweep excess sand and apply the second coat of Sikagard®-170 CR.
- Recoating must be done within 24 hours at 70° F (21° C). After 24 hours, mechanically abrade the entire surface of the coating and clean it with acetone or xylene. Allow Sikagard®-170 CR to dry and reapply the coating within 1 hour.
As A Topcoat For Epoxy Or Polyurethane Floor And Wall Coatings
- When applying Sikagard®-170 CR over an existing coating, first conduct a test application.
- Lightly sand the surface with medium sandpaper or a 60–80 mesh 3M screen back. Vacuum up all dust and solvent and wipe the floor with acetone. Allow to dry.
- Apply the Sikagard®-170 CR within 1 hour and according to application instructions.
As A Trowel-down Topping
- After mixing, slowly add 2–3 parts clean, dry sand by volume to 1 part mixed Sikagard®-170 CR epoxy by volume.
- Trowel or screed the sand-modified Sikagard®-170 CR to the desired thickness (minimum ¼" or 6 mm).
CURING TREATMENT
Tack-free: approximately 4–6 hours
Traffic ready: 24 hours
Fully cured: 7 days at 75° F (24° C) and 50% relative humidity
CLEANING OF TOOLS
- Clean equipment immediately after use with xylene.
- Clean hands and skin immediately with soap and water, industrial hand cleaner, or denatured alcohol.
- Cured material can be removed by mechanical means only.