InfraStructure Polyurea

No/Tear is a high strength energy absorbing super-polymer designed to deliver extensive elastomeric resiliency when subjected to explosive energy forces. It possesses extremely high material tear resistance and superior toughness. When subjected to an exothermic explosion, the super-polymer's molecular geometry is shifted to a very high energy state enabling it to absorb the blast's gaseous shock wave and kinetic energy of debris fragments. Military testing has demonstrated energy tranfer rates in the order of 250 psi/ms. There are 2 primary super-polymer formulations used in military protection appliations. No/Tear is used for explosive blast containment (TSWG) and Ultimate No/Tear is used for ballistic (TARDEC)shielding. Material thicknesses of the polymers are dictated by the required level of protective performance along with application specific substrate. Typical material substrates include high strength steel, 6061 Aluminum, high-flex composites, wood, masonry and concrete.

Physical application of No/Tear to these substrates requires a 2-component liquid pumping spray machine, safety wear gear and cleanup materials. The polymer is available in 55 gal containers. Material usage at 1/8" thickness covering 18 sq.ft. will require 1 gal. Surfaces must be prepped for cleanliness and/or use an adhesion promoter primer to acquire superior adhesion. Please contact our technical support group for specific substrate application procedures, spray machines, safety gear and clean-up kits. Cure time of the material is 1 minute and may be sprayed in temperatures of 20°F to 150°F. No/Tear operational temperatures range from 0°F to 260°F. Refer to MSDS for material and safety standard procedures.

PRODUCT DESCRIPTION

NO-TEAR- is a two component 100% solid Polyurea with superior performance in industrial applications. NO-TEAR displays extremely fast cure times with excellent adhesions to different substrates. NO-TEAR can be spray applied at temperatures ranging from 20?F to 150?F. NO-TEAR has excellent chemical and water resistance. NO-TEAR has a temperature range of -40?F to 350?F. NO-TEAR conforms to USDA and FDA guidelines for incidental food contact.
NOT OZONE DEPLETING.

PRIMARY APPLICATIONS

NO-TEAR adheres well to several substrates including concrete, steel, and wood. Some typical uses include:

SECONDARY CONTAINMENT
RAIL CARS
WASTEWATER LAGOON AND POOL LININGS
TABLE EDGING
COLD STORAGE AREAS
WASH BAY AND SHOWER LININGS
COOLING TOWERS
PETROCHEMICAL REFINERIES
OILFIELD PIPELINE COATINGS
WATER PROOFING
SEWER LINERS
MANHOLE RESTORATION
INDUSTRIAL FLOORING
BRIDGE COATINGS
ANTI-GRAFFITI

TYPICAL PHYSICAL PROPERTIES:
Tensile Strength (PSI) ASTM D412 3670
Elongation (%) ASTM D412 320
100% Modulus ASTM D412 2500
300 % Modulus ASTM D412 4150
Tear Strength (PLI) ASTM D2240 545
Hardness (Shore A) ASTM D1737 96
Flexibility (1/ 8 “ Mandrel) ASTM D1737 Pass
Flashpoint (?F) ASTM Pensky-Martin >200
Taber Abrasion (mg loss) ASTM D4060 25 CS18 WHEEL 1 kg per 1000 cycles
Viscosity B Side CPS 500
Viscosity A Side CPS 450
Ratio A / B PBV 1 : 1
Gardner Impact test ASTM D2794 > 325 inch lbs.

TYPICAL PROCESSING PROPERTIES:
Fast Slow
Gel Time seconds 9 22
Tack Free Time seconds 16 35
Open to Foot Traffic minutes 5 60
Open to Industrial Traffic minutes 60 120

RECOMMENDED EQUIPMENT SETTINGS:

A-Side Hose Temperature ?F 150
B-Side Hose Temperature ?F 150
Block Temperature ?F 150
Spray Pressure (PSI) Gusmer, GX-7 2000
Spray Pressure (PSI) GlasCraft, Probler 1500

SHELF LIFE AND STORAGE:

Six months in factory delivered unopened drums. Keep away from extreme heat, cold, and moisture. Maintain at a proper storage temperature of 60?F - 100?F.

APPLICATION EQUIPMENT:
This material must be applied utilizing a high-pressure plural component pump (1:1 by Volume) such as a GlasCraft-MX ? equipped with a Prober? Gun or a Gusmer? H-2035 proportioning unit and a Gusmer? GX-7 (400 Series) or GX-8 spray gun. This proportioning unit must be capable of supplying the correct pressure and heat for the required hose length on a consistent basis. This characteristic is mandatory to apply this elastomer in a consistent, efficient manner.

INSTALLATION RECOMMENDATIONS:
Substrate surfaces should be free of loose particles, rusts, voids and spills. Chloride, moisture and pH levels should be checked prior to application. Always agitate the B-side before using.
Old Concrete – Sandblasting, shot blasting or water blasting is highly recommended to remove surface contaminates. Any oils or fats must be removed prior to product application. Acid etching may be required (followed by a thorough rinsing) to open the pores of the concrete to accept a primer coat. Primer is recommended for NO-TEAR. A minimum 40-mil coating of NO-TEAR is generally recommended for chemical and abrasion resistance.
New Concrete – The concrete should be allowed to cure for a minimum of 30 days. Shot -blasting, sand blasting or acid etching (15% muriatic acid / 85% H2O) is required to remove the surface lattice that appeared during the curing process. EP Primer should be applied to reduce out gassing.
Carbon Steel – The steel must be prepared to a “near white metal,” equivalent to SSPC 10 or NACE 2. For immersion service, a 3-mil blast profile is recommended. A 2-mil blast profile is generally accepted. A 10 – 40 mil coat of NO-TEAR is generally recommended based on chemical resistance issues.
Substrate Repairs – All spalls and cracks should be repaired to ICRI standards. Expansion joints should be honored. Horizontal control joints can be filled with a joint filling material prior to the application of NO-TEAR.

COVERAGE CALCULATIONS:
Thickness Sq.Ft /gal Thickness Sq.Ft /gal
20 mils 70 30 mils 48
40 mils 36 50 mils 29
60 mils 24 80 mils 18
100 mils 14 250 mils 5.5

ADHESION RESULTS:

ASTM D-4541 Elcometer
Concrete (No primer) 400 psi ? Concrete Failure
Concrete (Epoxy) 300 psi ? Concrete Failure
Steel (No primer) >1500 psi ? Substrate Failure
Steel (Epoxy primer) > 900 psi ? Primer Failure
Wood (No primer) > 250 psi ? Delamination

CHEMICAL RESISTANCE:
Chemical Result (25?C)
Acetic Acid (100%) RC
Acetone RC
Ammonium Hydroxide (50%) R
Benzene RC
Brine-Saturated H2O (310g/l) R
Chlorinated H2O R
Clorox? (10%) H2O R
Diesel Fuel RC
Gasoline RC
Gasoline / 5 % MTBE RC
Gasoline / 5% Methanol RC
Hydrochloric Acid (20%) R
Hydrofluoric Acid (50%) R
Hydraulic Fluid (oil) RC
Isopropyl Alcohol R
Lactic Acid RC
MEK RC
Methanol R
Methylene Chloride C
Mineral Spirits RC
Motor Oil R
MTBE C
Muriatic Acid (10%) R
NaCl / H2O (10%) R
Nitric Acid (50%) R
Phosphoric Acid (10%) & (50%) R
Potassium Hydroxide (10%) R
Potassium Hydroxide (20%) R, Dis
Propylene Carbonate RC
Skydrol? C
Sodium Hydroxide (25%) & (50%) R
Sodium Hypochlorite (10%) R
Sodium Bicarbonate R
Stearic Acid R
Sugar / H2O R
Sulfuric Acid (10%) R
Sulfuric Acid (>50%) RC
Toluene R
1,1,1-Trichlorethane C
Trisodium Phosphate R
Vinegar / H2O (5%) R
H2O R
H2O (14 days @ 82?C) R
Xylene RC