Knowde Enhanced TDS
Identification & Functionality
- Product Type
- Technologies
Applications & Uses
Properties
- Mechanical Properties
| Value | Units | Test Method / Conditions | |
| Mix Ratio (By Weight) | 100:25:00 | Wt. | PTM&W |
| Mixed Viscosity (77°F) | 48000 | cps | D2393 |
| Pot Life (4 fl. Oz. Mass At 77°F) | 50 - 55 | min. | D2471 |
| Recommended Application Time | 25 | min. | PTM&W |
| Cured Hardness | 72 - 75 | Shore D | D2240 |
| Specific Gravity | 1.04 | — | D1475 |
| Density | 8.69 | lb./gallon | D792 |
| Specific Volume | 26.6 | cu. in./lb. | D792 |
| Tensile Strength | 4443 | psi | D638 |
| Elongation At Break | 8.1 | % | D638 |
| Tensile modulus | 386249 | psi | D638 |
| Flexural Strength | 8531 | psi | D790 |
| Flexural Modulus | 414422 | psi | D790 |
| Compressive Strength | 9098 | psi | D695 |
| Compressive Modulus | 337596 | psi | D695 |
| Glass Transition Temp. (DMA, Tg Peak) | 159 | °F | D4065 |
| Adhesive Lap Shear (Double Lap Shear in Compression, Substrate: Standard Filled 60-65 Shore D Tooling Board,Substrate Failure) | 860 | psi | Modified D3528 |
| Adhesive Lap Shear (Double Lap Shear in Compression, Substrate: Unfilled 85 Shore D Urethane Tooling Board) | 2400 | psi | Modified D3528 |
Safety & Health
- Safety And Handling
PTM&W epoxy products are made from raw materials carefully chosen to minimize or even eliminate toxic chemicals, and therefore offer the user high performance products with minimum hazard potential when properly used. Generally, the PTM&W epoxy resins and hardeners will present no handling problems if users exercise care to protect the skin and eyes, and if good ventilation is provided in the work areas. However, breathing of mist or vapors may cause allergenic respiratory reaction, especially in highly sensitive individuals. As such, avoid contact with eyes and skin, and avoid breathing vapors. Wear protective rubber apron, clothing, nitrile rubber gloves, face shield or other items as required to prevent contact with the skin. In case of skin contact, immediately wash with soap and water, followed by a rinse of the area with vinegar, and then a further wash with soap and water. The vinegar will neutralize the hardener and lessen the chances of long term effects. Use goggles, a face shield, safety glasses or other items as required to prevent contact with the eyes. If material gets into the eyes, immediately flush with water for at least 15 minutes and call a physician. Generally, keep the work area as uncluttered and clean as possible, and clean up any minor spills immediately to prevent accidental skin contact at a later time. Keep tools clean and properly stored. Dispose of trash and empty containers properly.
Packaging & Availability
- Packaging Weights
Quart Kit Gallon Kit Pail Kit ES6251 Part A 2 lb. 10 lb. 30 lb. ES6251 Part B .5 lb. 2.5 lb. 7.5 lb. (2 At 3.75 lb.)
Kit 2.5 lb. 12.5 lb. 37.5 lb.
Storage & Handling
- Handling And Curing
Both Part A and Part B of ES6251 must be premixed, with special attention paid to the Part B, which contains lightweight fillers that can float to the top of the container. When the Part B is opened, the fillers will be on top and can appear to be dry and flakey, with the liquid hardener below. The fillers must be mixed into the liquid portion until homogeneous. The Part A and Part B can then be combined at the correct mix ratio. As is typical of most epoxies, ES6251 will gradually thicken as it progresses to initial gel. Therefore, it is best to apply the mixed material to the surfaces to be bonded within the first 20 to 30 minutes after mixing, so that the adhesive will wet the surface properly. Apply ES6251 approximately 1/8” thick to one of the mating surfaces and clamp the two surfaces together. It will usually be possible to remove the clamps after 4 to 6 hours at room temperature (77o F minimum). It is recommended the bonded structure be allowed to cure overnight (15 + hours) before machining. Higher ambient temperatures will shorten these requirements and conversely, longer cure times will be required in cooler temperatures.