Leecast 23-130-5
- Chemical Family
- Polyurethanes (PU)
LEECAST 23-130-5 is a unique urethane system that contains neither MOCA nor TDI. LEECAST 23-130-5 is designed to provide excellent dielectric properties over a wide temperature range. It has good low temperature flexibility and is ideally suited for protecting pressure sensitive glass diodes and other fragile electrical circuitry in UL-listed products. Its low viscosity and long pot life make it attractive for penetrating complex modules and for the aggregate casting method of encapsulation and potting. LEECAST 23-130-5 also features excellent reversion resistance and hydrolytic stability.
Product families
- Polyurethanes
Other characteristics
- Brand
- Leecast
- Polymer Name
- Polyurethane (unspecified)
- Safety
LEECAST 23-130-5 Part B is a super cooled liquid and may crystallize. Store at 75–95oF. If crystallization occurs, heat to 120oF in a vented oven. Do not overheat. Avoid skin contact and do not inhale vapors. Always use in a well-ventilated area.
- Appearance
- Amber liquid, Black liquid
- Shelf LIfe
- 12 months
- Technology
- Plastics
- Handling and Mixing
LEECAST 23-130-5 may be mixed and poured at room temperature without de-airing. Air bubbles mixed into the system will rise out of the liquid before gellation. A typical cure cycle is overnight at 25oC plus 2 hours at 80oC or 72 hours at 25oC.
- Plastics and Elastomers Functions
- Resin
Technical data
Table 1 of 2
25 rows| Characteristic | Value | Unit |
|---|---|---|
| Hardness Change (1000 hours, 56ºC) | 3 | Shore A |
| Viscosity (25ºC) (Part A) | 2000 | cps |
| Hardness Change | -8 | Shore A |
| Density (PART A) | 7.5 | lbs./gal |
| Hardness (25ºC) | 45 | Shore A |
| Hardness (-40ºC) | 65 | Shore A |
| Viscosity (25ºC) (Part B) | 30 | cps |
| Hardness (85ºC) | 30 | Shore A |
| Density (PART B) | 10.3 | lbs./gal |
| Tensile Strength (25ºC) | 350 | psi |
| Tensile Modulus (-40 ºC at 10% elongation) | 75 | psi |
| Tensile Modulus (-40 ºC at 50% elongation) | 260 | psi |
Table 2 of 2
6 rows| Characteristic | Value | Unit |
|---|---|---|
| Mix Ratio, by weight, (PART A) | 100 | — |
| Gel Time (25ºC) (100 g) (PART A) | 45 - 60 | minutes |
| Cure Time (at 25ºC) (PART A) | 72 | hours |
| Mix Ratio, by weight, (PART B) | 16 | — |
| Gel Time (25ºC) (100 g) (PART B) | 45 - 60 | minutes |
| Cure Time (at 25ºC) (PART B) | 72 | hours |
