PT2254 Epoxy Laminating System
DESCRIPTION
PT2254 is a general purpose unfilled laminating system for use in fabricating tooling or structures that will operate at room temperature in service. This system has a low mixed viscosity which allows it to penetrate even the thickest reinforcing fabric easily, and provides dense, void-free laminates. The two hardeners designed for use with this resin have working times long enough to enable the user to fabricate structures of all sizes with ease. PT2254 Part B has a pot life of 45 to 50 minutes, and the Part B1 has a pot life of 100 to 120 minutes. Tooling and parts made with PT2254 are tough, stable and provide dependable long term service in demanding applications.
PRODUCT SPECIFICATIONS
| PT2254 A | PT2254 B | PT2254 B1 | ASTM Method | |
| Color | Light Amber | Amber | Amber | Visual |
| Viscosity | 1800 cps | 1200 cps | 200 cps | D2392 |
| Specific Gravity, gms./cc | 1.10 | 1.04 | 1.05 | D1475 |
| Mix Ratio, by Weight | 100 : 18 | 100 : 19 | PTM&W | |
| Pot Life, 4 fl oz Mass @ 77°F | 45 – 50 min. | 110 – 120 min. | D2471 |
HANDLING & CURING
The PT2254 system will cure completely at normal ambient temperatures
with either of the Part B hardeners. In warmer summer temperatures, when
shop temperatures can get very high, the working time of these systems
is still long enough to allow time to complete a project. In colder
environments, make sure that the ambient shop temperature does not drop
below 65°F to insure proper curing of the material. If the temperature
is too low, the epoxy will remain in a partially cured condition, and
the tool or structure might distort or be overly susceptible to damage.
At the proper ambient temperature, PT2254 with Part B will cure
sufficient for handling in 12 to 16 hours, and full cure is achieved in
24 hours. When using the Part B1, handling time will increase to 18 to
20 hours, and full cure can take slightly over 24 hours in cooler
weather. As with most epoxies, this full cure can be accelerated with
the addition of heat after the material has gelled at room temperature.
If a heat cure is desired, make sure that the epoxy has gelled hard
before placing in an oven, to prevent stress buildup or distortion due
to rapid gelling under heat. A typical oven cure cycle would be 3 to 4
hours in an oven at 140°F to 165°F.
PACKAGING WEIGHTS
| Pail | Drum Kit | |
| PT2254 Part A | 44 lb. | 445 lb. |
| PT2254 Part B | 8 lb. | 2 @ 40 lb. ea. |
| PT2254 Part B1 | 8.5 lb. | 2 @ 43 lb. ea. |
Inasmuch
as PTM&W Industries, Inc. has no control over the use to which
others may put material, it does not guarantee that the same results as
those described herein will be obtained. The above data was obtained
under laboratory conditions, and to the best of our knowledge is
accurate. This information is presented in good faith to assist the
user in determining whether our products are suitable for his
application. No warranty or representation, however is intended or
made, nor is protection from any law or patent to be inferred, and all
patent rights are reserved. Before using, user shall determine the
suitability of the product for his intended use, and user assumes all
risk and liability whatsoever in connection therewith. In no event with
PTM&W Industries, Inc. be liable for incidental or consequential
damages. Buyer’s sole and exclusive remedy in such instances shall be
limited to replacement of the purchase price.
TYPICAL MECHANICAL PROPERTIES
| PT2254 A/B | PT2254 A/B1 | ASTM Method | |
| Mix Ratio, by Weight | 100 : 18 | 100 : 19 | PTM&W |
| Color | Translucent | Translucent | Visual |
| Mixed Viscosity, @77°F, centipoise, | 1300-1500 cps | 900-1000 cps | D2393 |
| Pot Life, 4 fl. oz. Mass @ 77°F | 45 – 50 min. | 110 – 120 min. | D2471 |
| Cured Hardness, Shore D | 81 Shore D | 82 Shore D | D2240 |
| Specific Gravity, grams, cc | 1.090 | 1.092 | D1475 |
| Density, lb./cu inch, lb./gallon | .0394, 9.1 | .0394, 9.11 | D792 |
| Specific Volume, cu. in./lb. | 25.39 | 25.36 | D792 |
| Tensile Strength, psi | 7,380 psi | 7,070 psi | D638 |
| Elongation @ Break %
| 1.79 % | 1.8 % | D638 |
| Tensile Modulus, psi | 369,442 psi | 339,350 psi | D638 |
| Flexural Strength, psi | 13,737 psi | 13,715 psi | D790 |
| Flexural Modulus, psi | 400,972 psi | 391,806 psi | D790 |
| Compressive Strength, psi | 11,697 psi | 10,750 psi | D695 |
| Glass Transition Temp., DSC: Tg | 180°F | 178°F | D3418 |
SAFETY & 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, all epoxy resins and hardeners can be irritating to the skin, and prolonged contact may result in sensitization; and breathing of mist or vapors may cause allergenic respiratory reactions, especially in highly sensitive individuals. As such, avoid contact with eyes and skin, and avoid breathing vapors. Wear protective rubber apron, clothing, gloves, face shield or other items are 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. Do not use any of these types of products until Material Safety Data Sheets have been read and understood.