PT2752 A/B High Strength Toughened Infusion & Laminating System

DESCRIPTION

PT2752 is a high strength toughened epoxy system that is an ideal material for the production of very durable parts and structures which possess very high cured properties. With a low mixed viscosity, it is well suited to the resin infusion process, where it flows readily into the reinforcing fabric. It also performs very well in traditional hand lay-up operations and proves to be a quite versatile material for producing all types of parts and structures. Parts and structures that are subjected to high stress loads and severe impact abuse are good candidates for the tough nature of PT2752.


PRODUCT SPECIFICATIONS
 PT2752 A
PT2752 B
ASTM Method
ColorLight Amber
Light Amber
Visual
Viscosity
13,000 cps
60 cps
D2392
Specific Gravity, gms./cc
1.16.96D1475
Mix Ratio, by Weight
100 : 40
PTM&W
Pot Life, 4 fl oz Mass @ 77°F
55 – 66 min.
D2471

HANDLING & CURING

The high performance ingredients and additives used in PT2752 require a heat cure to develop optimum properties with this system. PT2752 will gel hard overnight at room temperature, but the material is brittle at this stage. Even after 3 weeks at room temperature, the material will achieve only 2/3 of ultimate properties, and it is still brittle! It must be given some heat to cure sufficiently for service. Also, the part or structure must be supported during heat cure to prevent sag or distortion at elevated temperature before full cure. The amount and duration of the heat cure needed can be determined by the end use of the part or structure. The more heat applied, the higher the resulting strengths and heat resistance. The following test results can be used to determine the cure cycle best suited to your application:

Allow to Gel @ Room Temp.
Initial Cure
Post Cure
% of Full Cure Attained
6 – 8 Hours
Overnight @ 115°F
 79 %
Overnight @ Room Temp.
 5 – 6 Hours @ 150°F
85 %
6 – 8 Hours
Overnight @ 150°F
 98 %
6 – 8 Hours
Overnight @ 150°F
2 – 3 Hours @ 175-180°F
100%

PACKAGING WEIGHTS

Gallon Kit
PailDrum Kit
PT2752 Part A 9 lb.
35 lb.
450 lb.
PT2752 Part B
3.6 lb.
2 @ 7 lb. ea.180 lb.
Kit12.6 lb.
49 lb.
630 lb.

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
 PT2752 A/B
ASTM Method
Mix Ratio, by Weight
100 : 40
PTM&W
ColorLight Amber
Visual
Mixed Viscosity, @77°F, centipoise
650 cps
D2393
Pot Life, 4 fl. oz. Mass @ 77°F
55 – 65 min.
D2471
Cured Hardness, Shore D
87 Shore D
D2240
Specific Gravity, grams, cc
1.09D1475
Density,  lb./cu in,  lb./gallon
.0394,  9.1 lb.
D792
Specific Volume,  cu. in./lb.
25.4D792
Tensile Strength, psi (Cast Bar)
8,968 psi
D638
Elongation at Break, % (Cast Bar)
8.54 %
D638
Tensile Modulus, psi (Cast Bar) 421,855 psi
D638
 Glass Laminate
Carbon Laminate
 
Tensile Strength, psi (Laminate)
51,800 psi
90,854 psi
D638
Elongation at Break, % (Laminate)
1.77 %
1.41 %
D638
Tensile Modulus, psi (Laminate)
3,796,836 psi
6,373,907 psi
D638
Flexural Strength, psi (Cast Bar) 15,393 psi
D790
Flexural Modulus, psi (Cast Bar)
455,033 psi
D790
Flexural Strength, psi (Laminate)
57,435 psi
95,926 psi
D790
Flexural Modulus, psi (Laminate)
3,363,756 psi
5,317,661 psi
D790
Compressive Strength, psi
12,656 psi
D695
Compressive Modulus, psi 467,834 psi
D695
Izod Impact Strength, Method A, Notched ft.lb./in. of Notch
2.184D256
Glass Transition Temp.,  DMA  Tg, E’
                                             Tg, Peak
170°F
189°F
D4065
Coefficient of Thermal Expansion,
Range 40°C to 80°C
4.75 x 10-5 in./in./°F
D696

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.