Knowde Enhanced TDS
Identification & Functionality
- Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Advantages
- Water-based for personal & environmental safety.
- Application is quick & easy for economical installation.
- Dries firmly & forms a strong, resilient seal.
- Creates a permanently flexible seal (even when system cycles between high and low temperatures).
- Resistant to fire, oxidation, cracking, moisture & water.
- Long service life.
- Quick & efficient clean up of tools & metal with hot water when sealant is still wet.
Applications & Uses
- Markets
- Compatible Substrates & Surfaces
- Uses
Childers® CHIL-FLEX™ CP-146 is used to seal all metal joints in high, medium and low pressure air handling ductwork systems. Application by trowel, brush or extrusion readily fills the joints of round, rectangular, rigid or flexible ductwork, diffusers and mixing boxes.
- Limitations
- Store and apply between 40ºF (4ºC) and 100ºF (38ºC); protect from freezing.
- To resist rain washoff, allow at least 16 hours drying time above 40ºF (4ºC), with a relative humidity of 50%. Higher humidity or lower temperatures may retard drying.
- Always test foil and paper facings for acceptable adhesion.
- Outdoor horizontal surfaces must always drain completely. A pitch of at least 1/4 inch per foot (2 cm/m) is required.
- If used between two impermeable surfaces, drying time will be extended.
- Material Preparation
All surfaces where sealant will be applied must be clean, dry, and free of oil or grease prior to application.Do not thin. Keep container closed when not in use.
- Application
Ul 181B Mastic Closure Of Ul 181 Flexible Air Ducts:
Apply to clean, dry, oil-free surfaces by brush, trowel, or power extrusion. Brush CP-146 out uniformly in a 2” wide coat over the joint at the nominal rate of 2 gal./100 sq. ft. (0.8 l/m2). Total coverage rate to be 45 – 55 sq. ft./gal (1.1 – 1.4 m2/l). Allow the completed joint to dry at least 24 hours above 70ºF (21ºC) before pressure testing. High humidities (over 70%) and/or cooler temperatures may retard drying. Total wet film thickness to be 32 mils ± 3 mils.
Other Sealing Applications – Not Ul 181:
Apply a continuous film of CP-146 Duct Sealant over all areas of the indoor or outdoor duct system where air leakage may occur. A brush may be used to work the sealant into joints and remove excess. On spiral ducts, apply a coat of CP-146 to the male end of the coupling prior to fitting the straight run of spiral duct over it. Brush excess CP-146 over the joint to complete the seal. Screw holes and flanges should also be sealed with a coat of CP-146. They may be applied to the inside or the outside of the duct.
Top Coating:
After it is completely dry, CP-146 may be top coated with good quality water-based paint.Power Extrusion:
CP-146 Duct Sealant may be applied using a wide variety of power (pressure) extrusion equipment suitable for use with water-based sealants. It is a soft buttery gel with a typical viscosity range of 130,000 – 180,000 cps. Corrosion resistant pumps and fittings are suggested.- Top Coating
After it is completely dry, Childers® CHIL-FLEX™ CP-146 may be top coated with good quality water-based paint.
- Clean Up
Use fresh water to clean brushes and equipment before product dries. Dry product may be removed with hot soapy water or strong solvents such as chlorinated solvent (non-flammable) or xylol (flammable).
Properties
- Color
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Average Non Volatile (By Weight) | 70.0 | % | ASTM D2369 |
| Clean Up | Warm, soapy water (wet) or xylol (dry) | — | — |
| Coverage (Dependent on Substrate, Film Thickness and Machine Settings) | 40.0 | sq. ft./U.S. gal. | — |
| Drying Time (Through) | 16-24 | Hours | — |
| Drying Time (To Touch) | 2.0 | Hours | — |
| Fungal Resistance | 0.0 | — | ASTM G21 |
| Service Temperature Range (Temperature to which dry adhesive is subjected.) | 20-200 | ºF | — |
| Shore Hardness (Type A) | 72.0 | — | ASTM D2240 |
| Water vapour Permeance (at 0.031 in. dry film thickness) | 0.5 – 1.3 | perms | ASTM F1249 |
| Wet Weight | 11.7 | lbs./U.S. gal. | ASTM D1475 |
Regulatory & Compliance
- Certifications & Compliance
- Certified
- MAS Certified Green®
- California Dept. of Public Health Standard Method v1.2
- VOC Emissions and Content requirements to contribute to Leed v4 EQ Credit: Low Emitting Materials – Paints and Coatings
- VOC Content: 24 g/l, less water and exempt solvents
- Collaborative for High Performance Schools EQ 7.1
- CP-146 Duct Sealant is produced under the classification and follow-up service of Underwriter’s Laboratories, Inc. and meets NFPA 90A and 90B 25/50 requirements
- CP-146 meets all SMACNA pressure classes up to 10" w.g. and SMACNA seal classes A, B and C on ducts constructed to SMACNA standards. It has been tested up to 15" w.g. and passed with no sealant blow out
- UL 181B-M Listed Control No. 6P84
Childers chil-flex™ sealant is listed by underwriters laboratories, inc. Under standard 181b, mastic closure of ul 181 flexible air ducts.
Technical Details & Test Data
- Surface Burning Test Characteristics ASTM E84
Applied to Inorganic Reinforced Cement Board
Flame Spread 0 Smoke Developed 0 Tested as applied in two 2 in. wide strips spaced 8 in. on center at a coverage rate of 45 sq. ft./gal.