L-21 Novolac Epoxy Liner
L-21 is a medium viscosity, nonylphenol-free, high-functional novolac resin.
Overview
L-21 is a medium viscosity, nonylphenol-free, high-functional novolac resin. It has been designed as a chemical resistant liner for higher levels of protection than our standard Bisphenol A or Bisphenol F epoxies.
Uses and Benefits
L-21 is most often used as a high-build finish coat in areas that require high heat and/or a high degree of protection from chemical attack. It provides protection from acids, caustics and solvents.
Limitations
L-21 is designed to be applied between 10-16 mils. Ideal application temperatures to be between 60-90°F. Cooler temperatures will increase cure times. Warmer temperatures will decrease working and cure times. Verify that substrate temperature is above 5 degrees of dewpoint during application and cure of material to avoid a potential amine blush.
Preparation
The preparation method for each project is determined by a full understanding of the substrate to be coated, the chemistry of the coating system being used, the coating system thickness, and numerous other factors. The coating installer should fully read and understand ICRI Guideline NO. 310.2R-2013 and OSHA 29 CFR 1926.1153 before starting preparatory work. The aim, of preparing a substrate for coating applications, is to roughen the surface, remove weak layers, contaminants, dirt, debris and present a solid, clean, dry substrate for the primer. If unsure as to the level of preparation needed contact Polymer Nation at Lab@polymerNation.com.
Key Benefits
- Stain Resistant
- Durable
- Easy Maintenance
- Low Odor/VOCs
- Chemical Resistant
- Abrasion Resistant
- Medium Duty
- Wear and Chemical Resistant
- Self Leveling
- Slip Resistant
Technical Data
At a glance — the specs most teams decide on.
- Shore Hardness @ 24 Hours
- 65Shore D
- Shore Hardness @ 7 Days
- 80Shore D
- Gloss @ 60° Angle
- 80-85Applying material close to dew point will decrease gloss and may result in an amine blush
- VOCs of Mixed Material
- <50 g/lEPA Method 24
- Solids by Volume (Mixed)
- 100%
- Working Time
- 20-25 minutes
- Gel Time
- 45 min.Warmer temperatures will decrease gel time and lower temperatures will increase gel time
- Dry to Touch
- 6-8 hoursWarmer temperatures will reduce time and colder temperatures will increase time
- Through Dry
- 8-12 hoursWarmer temperatures will reduce time and colder temperatures will increase time
- Dry to Walk
- 12 HoursWarmer temperatures will reduce time and colder temperatures will increase time
- Dry to Lightly Use
- 18-24 hoursWarmer temperatures will reduce time and colder temperatures will increase time
- Full Cure
- 7 daysWarmer temperatures will reduce time and colder temperatures will increase time
- Number of Components
- 2
- Mix Ratio (Liquids by Volume)
- 2:1It is always preferred to mix the entire kit, whenever possible, to avoid off-ratio mixtures
- Mixed Viscosity @ 25°C/77°F
- 600-750 cPWarmer temperatures will reduce viscosity and lower temperatures will increase viscosity
- Ideal Application Temperature
- 60-90°FVerify that substrate temperature is above 5 degrees of dewpoint during application and cure of material to avoid a potential amine blush
- Application Thickness
- 10-16 mils
- Coverage Per Mix
- 100-160 sq.ft./gal.
- Odor
- SubtleMeasuring odor offensiveness is difficult so experience with chemicals has been consulted here
- Storage Temperature
- 60-80 degrees FStore material between 60-90 degrees F in a protected dry location.
Colors & Packaging
Colors
Tap a color to enlarge. Swatches are a representative guide — request a physical sample for color-critical work.
Packaging
- Available sizes
- 3 Gallons15 Gallons165 Gallons
- Note
- Material can be supplied in larger packaging upon request and with minimum quantities
Where It's Used
Markets
Mixing & Application
It is always recommended to mix the entire kit, whenever possible, to avoid off-ratio mixtures. Mix ratio is 2 parts L-21 Part A to 1 part L-21 Part B. Combine all of part A and B into a single container, large enough to except the entire kit. Mix using a 350 RPM mixer using an appropriate mixing blade for 1.5 – 2.5 minutes making sure to not introduce excessive air into the material.
Disposal: Dispose of material, containers, solvents, etc., per Federal, State and local guidelines, rules and laws.
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