Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- FEATURES
- An elastomer with chemical resistance; comparable to many epoxies.
- Self-priming in most instances, with strong adhesion.
- Return to service within hours not days (foot traffic 1 hour, vehicle traffic 4 hours).
- Typically applied in a single ‘multi-pass’ application.
- Eco-friendly, 100% solids, and no VOCs.
Applications & Uses
- Applications
- Application Method
- RECOMMENDED USES
- Primary and secondary containment.
- Steel tanks, concrete tanks, and silos.
- Barge and ship holds.
- Oil and gas pipelines.
- Waste water treatment facilities.
- Chemical transportation.
- Industrial flooring.
- Pulp and paper industry.
- Asbestos and lead encapsulation.
- MIXING & THINNING
Thoroughly agitate the “B” component of this product prior to application. Use a SPI folding blade mixer, or equivalent equipment approved by SPI. Install mixer through the extra air specific 2” bung hole provided on all “B” drums. Care must be taken not to cross contaminate the individual components with the mixing equipment; for best mixing results, supply the SPI mixer with 25 cfm of air at 100 psi.Thinning is not required. Using any thinner may adverselyaffect product performance.
- GENERAL APPLICATION INSTRUCTIONS
Apply POLYSHIELD HT™ TRAFFIC COAT to only clean, dry, sound surfaces free of loose particles or other foreign matter. A primer may be required; subject to type and condition ofthe substrate. POLYSHIELD HT™ TRAFFIC COAT can be sprayedover a broad range of ambient temperatures. It is recommended that POLYSHIELD HT™ TRAFFIC COAT be sprayed in multi-directional (north-south/east-west) passes to ensure uniform thickness.
COMMON SUBSTRATES:
STEEL: 4-5 mil anchor profile is best for maximum adhesion andvaries per application and conditions; adhere to proper SSPC standards.
WOOD: Apply polyurea onto a clean, dry, and sanded surface; free from burrs, splinters and loose debris. (It is recommended to prime wood and other porous surfaces before application of heated, fast-set polyureas to reduce pin holing).
CONCRETE: Prepare concrete in accordance with SSPC/NACE Standards and SPI Concrete Prep Guide.
PREVIOUSLY APPLIED COATINGS: SPI recommends UB™(ULTRA BOND™) products over existing coatings that are past the recoat window and/or application over other coatings. The use of SPI Prep Wipe™ solution will tack up the existing polyurea coating and can help promote bonding of the POLYSHIELD HT™ SL. Contact SPI for additional information.
On all above listed substrates and others, please contact SPI Sales or Technical Support for more information specific to your application, including industry standards such as SSPC
and NACE. Adhesion tests are always recommended prior to application.
Properties
- Wet Properties
| Value | Units | Test Method / Conditions | |
| Solids by Volume | 100 | % | — |
| Solids by Weight | 100 | % | — |
| Volatile Organic Compounds (0 g/l) | 0 | lbs./gal. | — |
| Theoretical Coverage DFT (16 mils/gal) | 100 | sq. ft. | — |
| Weight per gallon (approx.) | 9.6 (4.35) | lbs. (kg) | — |
| Number of Coats | 1 - 2 | — | — |
| Mix Ratio | 1 “A” : 1 “B” | — | — |
| Viscosity at77°F (25°C) (B at 90°F 700 cPs) | A: 650 ± 50 B: 750 ± 50 | cPs | — |
Technical Details & Test Data
- DRY PROPERTIES*
Tensile Strength ASTM D638 ± 3,000 psi (21 MPa) Elongation ASTM D638 ± 100% Hardness (Shore A) ASTM D2240-81 65 ± 2 **Exposure Temperature -40°F - +200° (-45°C - +93°C) *All cured film properties are approximate since processing parameter, ad-mixture types, and quantities change physical properties of the cured elastomer. All samples for above tests were force cured 48 hours or aged for more than three weeks. It is recommended that the user perform their own independent testing.
** Test performed in a dry, static environment.
Gel ± 4sec Tack Free ± 10 sec Post Cure** 0 - 12 hours
Recoat 0 min - 6 hours
** Complete polymerization to achieve final strength can take up to several days or weeks, depending on a variety of conditions or product type. All samples for above tests were force cured 48 hours or aged for more than three weeks. It is recommended that the user perform their own independent testing.
The samples for tests were sprayed with Graco HXP3 @ 2500 psi dynamic (17 mpa). Primaries/Hose Heat 170°F (77°C,) MP Fusion gun with 29/29 mixing chamber with .040 ceramtip. Test results from SPI.- TEST INFORMATION
Mandrel Bend Test ASTM D522-93a Passed Mandrel Size 1” Test Temp - 40°F (-40°C) - IMMERSION
CHEMICAL WEIGHT GAIN % Acetic 50% 9.75% 11 months Crude Oil 3.7% 1 month Diesel 0.1% 3 years Gasoline (unleaded) 4.75% 17 months Sulphuric Acid 14%
Phosphoric Acid30% -0.86% 2 years Jet Fuel JP-1,2,3 1.4% 5 years Methanol 9.12% 19 months Skydrol 16.5% 1 year Sulphuric Acid 50% 6.15% 1 year Immersion samples were ‘free films’ (6 sides exposed). Inservice, containment liners have only one side of liner exposed to reagents. To calculate approximate chemical absorption, divide the weight gain percentage indicated on the adjacent chart by two. All tests performed at SPI location at room temperature. Certified free film samples are available for immersion evaluation.
- RECOMMENDED EQUIPMENT SETTINGS
MACHINES GRACO (Gusmer, Glasscraft)
E-XP2
H-XP2
H-XP3PMC PHX-40 GUNS: GRACO (Gusmer, Glasscraft) Fusion MP
GX7-DI
GX7-400- Standard 1:1 ratio, heated, plural-component equipmentdeveloping a minimum of 2500 psi (13.9 MPa) dynamicpressure with heating capabilities to 165°F (74°C) will adequately spray PTU®.
- Machines capable of producing a higher dynamic psi maybe required depending on the service environment thePTU® will be exposed to. Consult SPI technical servicepersonnel for additional information.
- Primary heater temperature 160-170°F (71-77°C).
- Hose temperature 160-170°F (71-77°C). A hose thermometer inserted under the insulation near the gun should reada minimum of 145-155°F (63-68°C).
- Physical properties will be enhanced when sprayed at higher pressure (3000 psi or more); utilizing an impingement mix gun such as MP Fusion or GX7-DI gun.
Do not use mixing chambers with output greater than 1.5gallons per minute.
- PARAMETERS & LIMITATIONS
- PTU™ is for professional use only. User must be proficient in the application of PTU™ and the use of the high pressure heated plural component equipment used to apply it.
- PTU™ must be stored at temperatures between 60—90°F (15—32°C).
- Liquid temperature in containers/drums during application 70—100°F (21—38°C).
- Apply PTU™ when surface and air temperatures are above 40°F (5°C) and the surface temperature is at least 5°F (3°C) above dew point and rising.
- Avoid moisture contamination in containers. Containers should not be resealed if contamination is suspected.CO2 created pressure can develop. Do not attempt to use contaminated material.
- Undried air exposed to liquid components will reduce physical properties of the cured coating.
Note: The material supplied is a two component system(component “A”/component “B”, which is used to formulatethis product. The quality and characteristics of the finished polymer is determined by the mixture and application of thetwo components by the person applying the polymers.
Packaging & Availability
- Packaging Type
- COLORS
PTU™ is available in SPI standard colors (Sand, MediumGrey, and Black).
Note: PTU™ is an aromatic polyurea. Therefore, with allaromatics, color change and superficial oxidation willoccur. SPI Aliphatic polyurea, urethane, polyaspartics, andother suitable topcoats can be used where long-term color stability and increased longevity in full sun exposure are ofcritical importance.
- PACKAGING
This product sold in standard 110 gallon drum and 550gallon tote sets. Available in other container sizes, Non-standardcontainers may require a longer lead time.
Storage & Handling
- Shelf Life
- 6 Months