High Temperature Epoxy
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Available Kit Sizes:
**This epoxy resin system requires a heat post cure to achieve a complete cure. Using solar heat, infrared radiant heat, or the use of a processing oven can be used to post cure the resin system.
The MAX HTE A/B resin system will only achieve partial cure (B-Stage) at room temperature and will require exposure to elevated temperature for full cure state. Please review the cure schedule in the properties table for more curing details.
DESCRIPTION
MAX HTE A/B is a two-part epoxy based system especially formulated to provide structural strength at temperatures of up to 200oC or 390oF under pressure or load. It is formulated as an impregnating resin for fiberglass, Carbon Fiber, Kevlar, Spectra Fiber and other specialty materials that require heat performance.
At room temperature performance, MAX HTE exhibits exceptional toughness and other mechanical properties such as adhesion, compressive strength and flexural modulus. MAX HTE also provides excellent chemical and water resistance.
MAX HTE A/B can also be utilized as an adhesive, encapsulant or potting compound, tooling resin for high temperature applications.
Fillers and colorants can be added to modify it for a specific use.
MAX HTE provides a long pot life at room temperature suitable vacuum assisted resin transfer molding or VARTM, fiber pultrusion, pre-impregnation process with a relatively short heat cure time. It is specially designed to withstand continuous high temperature service, high impact resistance and exposure to harsh conditions.
MAX HTE A/B is 100 % solids, low odor and toxicity and does not contain
Ozone Depleting Chemicals (ODC).
When mixed and allowed to gel at room temperature, MAX HTE will harden to a glass-like consistency and will slightly re-flow when exposed to heat. It will require a short heat cure develop a stronger durability or handling strength. (1 Hour minimum at 80oC or 55oC for 2 Hours Minimum) MAX HTE will fully cure when the part is exposed to the operating temperature or by curing at the specified cure schedule as noted below. It will not reach 100% cure without exposure heat post cure.If an oven is not available, allowing the MAX HTE to cure under solar heat or by radiant infrared heat for at least 3 hours will provide enough cure advancement for it to be handled without shattering.
Exposing the assemble part to direct solar heat (sun exposure) for a longer period will provide enough heat cure for the part to be handled. It will require a higher temperature exposure to attain full cure. The initial heat exposure will prevent the resin from liquefaction or re-flow and allow enough physical strength for gentle handling.
Physical and Mechanical Properties
Physical Properties
Density |
1.10 G/CC |
Mixed Color |
Amber Liquid |
Mixed Viscosity |
3000-4000 CPS at 25˚C |
Mix Ratio |
28 to 30 Parts “B” to 100 Parts “A” By Weight |
Gel Time/Pot Life |
3 Hours at 25 ˚C |
Optimum Full Cure Time Schedule |
3 Hours at 25 ˚C plus 3 Hours At 130 ˚C Or 3 Hours at 25˚C plus 2 Hours At 155˚C |
Mechanical Properties
Specimens were cured 3 Hours at 25˚C plus 2 Hours At 155˚C
Hardness |
95 Shore Durometer D |
Tee-Peel Strength (7781 fiberglass/fiberglass) |
12 Pounds Per Inch Width |
Tensile Strength |
11.0 KSI At 25 ˚C |
Tensile Modulus |
372 KSI At 25 ˚C |
Tensile Shear Strength |
4200 PSI At 25 ˚C |
Test method ASTM D2557 Aluminum-Aluminum |
3300 PSI At 60 ˚C |
2900 PSI At 80 ˚C |
|
2200 PSI At 121 ˚C |
|
Compressive Strength |
15,000 PSI At 25 ˚C |
Glass Transition Temperature |
205 ˚C |
Chemical Resistance Test (120 days 77°F Immersion)
Specimens were cured 3 Hours at 25˚C plus 2 Hours At 155˚C
%Weight Change
Distilled Water | 1.63 |
Acetone | 6.86 |
Methanol | 7.04 |
Ethanol | 0.44 |
Toluene | 0.27 |
25% Acetic Acid | 12.95 |
30% Sulfuric Acid | 1.81 |
10% Nitric Acid | 3.73 |
10% Ammonium Hydroxide | 1.68 |
10% Sodium Hydroxide | 1.38 |
Motor Oil Soak | No Effect |
Brake Fluid Soak | 1.11 |
Gasoline | 5.79 |