Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
- Product Families
Features & Benefits
Applications & Uses
- Applications
- Application Area
- General Uses
- Dairy and meat processing plant brick floors
- Chemical processing floors
- Caulking Granite Blocks in pickling tanks
- Chemical unloading areas
- Handling Characteristics
Blome Sealant 72R is available in different grades for relatively horizontal surfaces. It may be poured in place and pumped with a caulk gun suitable for two-component materials
- Floor Joint Design
For maximum sealant performance, the following design principles should be followed. A closed cell backer rod should be inserted into the joint, after surface preparation, at a depth equal to ½ of the joint width. Minimum joint width and depth of sealant should be no less than ¼”.
- Surface Preparation
All surfaces must be clean and dry, void of oil, grease, rust, dirt or other contaminants that may inhibit proper adhesion. For porous surfaces such as concrete, wire brushing is recommended and for non-porous surfaces such as steel, solvent wiping may be adequate. For maximum adhesion it is recommended that surfaces be primed with Blome Primer 75. Damp surfaces or potentially damp surfaces should be primed with Blome ECR540 Moisture Tolerant Epoxy.
- Masking & Protection
Since installation of Blome Sealant 72R should follow completion of the floor surface, it may be advisable to mask the surfaces adjacent to the joint to minimize cleanup of the finished floor surface. Avoid foot traffic for 8-12 hours and 24 hours for vehicle traffic
- Application Equipment
Blome Sealant 72R is normally installed with simple equipment. For best results, pour into joints using a pour-can with a spout that has been shaped to fit the joint. This fills the joint from the bottom up and produces a better joint with fewer air bubbles trapped within the sealant. It may also be pumped with equipment suitable for viscous, two- component materials.
- Mixing Technique
We recommend using Jiffy type mixers for all mixing and stirring. While operating the mixer, avoid plunging it up and down in the bucket. This can fold air into the resin, which may result in bubbles and voids in the cured sealant. Be especially careful not to allow water to enter the mix.
- Working Time
The working time for Blome Sealant 72R is a very reasonable 40-60 minutes at 75°F. Ensure that the joints are ready for installation of the sealant before mixing.
- Mixing & Application
- Atmospheric temperature must be 60°F or above to permit proper mixing and pouring
- Premix each component, then add Component 2 to Component 1
- Using a drill motor and an agitator having a 5-inch or larger diameter blade, thoroughly mix for 3 to 5 minutes
- Pour into horizontal joints as soon as mixed. Sloping joints can be poured 15 minutes after mixing (when material begins to increase in viscosity).
- Touch-Up & Recoating
Short filled joint sealant or air pockets are best repaired by full removal of the sealant in the affected area and re-installation of the sealant.
- Clean Up
Hand tools and equipment may be cleaned with xylene or MEK after use. Cured material may be difficult to remove.
Properties
- Cured Properties
- Wet Properties
| Value | Units | Test Method / Conditions | |
| Elongation | 147.0 | % | — |
| Tensile Strength | 216.0 | psi | — |
| Elastic Recovery | 99.0 | % | — |
| Bond Strength to Steel | 135.0 | psi | — |
| Coefficient of Linear Expansion | 26 x 10⁻⁵ | in./in./°F | — |
| Flow (200°F) | None | — | — |
| Thermal Shock | No cracking or disbonding | — | — |
| Rapid Temperature Change | No cracking or disbonding | — | — |
| Operating Temperature Range | -80 to 140 | °F | — |
| Value | Units | Test Method / Conditions | |
| Solids (Volume) | 100.0 | % | — |
| Pot Life (75°F, 1 Gallon) | 40-60 | min | — |
| Initial Set (75°F) | 6 - 8 | h | — |
| Ready for Service Cure (75°F) | 24.0 | h | — |
| Final Cure (75°F) | 7.0 | days | — |
Technical Details & Test Data
- Estimated Linear Feet per Gallon of Joint Sealant
DEPTH WIDTH ½” ¾” 1” 1 ¼” 1 ½” 1 ¾” 2” ½” 77’ - - - - - - ¾” 51.3’ 34.2’ - - - - - 1” 38.5’ 25.7’ 19.3’ - - - - 1 ¼” 30.8’ 20.5’ 15.4’ 12.3’ - - - 1 ½” 25.7’ 17.1’ 12.8’ 10.7’ 8.6’ - - 1 ¾” 22’ 14.7’ 11’ 8.8’ 7.3’ 6.3’ - 2” 19.3’ 12.8’ 9.6’ 7.7’ 6.4’ 5.5’ 4.8’
Safety & Health
- Caution
Blome Sealant 72R may cause skin irritation with prolonged or repeated contact. Avoid skin contact and follow the material safety data sheet, which is available for each product.
Packaging & Availability
- Packaging
Blome Sealant 72R is supplied as a two-component material, packaged in either pre-measured one-gallon units or in four-gallon units.
Storage & Handling
- Storage
- Store unopened components in a dry place, out of direct sunlight and protected from the elements
- Storage temperature should be 60-85°F
- Properly stored, Blome Sealant 72R will have a minimum shelf life of 12 months.
- Keep away from heat and flame
- For the 24 to 48 hours just prior to use, adjust the storage temperature to 70-85°F to facilitate handling.