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What is Nelcote E-761 PCB ?

This is an architectural grade resin that can help fabricate components in a wide range of industries, including aerospace and wind turbine manufacturing. Additionally, Nelcote E-761 Epoxy Prepreg offers exceptional formability, high shear strength, excellent surface hardness, and corrosion resistance. The resilient material also exhibits low viscosity for easy handling with no shrinkage or gel at room temperature.

Nelcote E-761 Epoxy Prepreg works well with Nelcote’s solvent-based 2K polyurethane topcoat and a polyester/polyamide prepreg as the substrate.

Nelcote E-761 Epoxy Prepreg is a high-speed resin with an epoxy equivalent weight of approximately 280. The material features three components that combine to form a material with good physical and thermal properties. As a result, Nelcote E-761 Epoxy Prepreg is compatible with a wide range of resins. We can use it for various adhesive applications, including adhesives for luggage tags, magnetic tape, and electric wire insulation.

Why use reinforced E-Glass?

Reinforced epoxy is ideal for advanced composite processing, industrial applications, and large-scale manufacturing. Reinforced formulations improve the strength of the material without increasing weight or altering the formability. As a result, E-Glass offers high mechanical strength and provides abrasion, impact, and fracture-resistance benefits.

Nelcote’s reinforced epoxy can provide significant improvements in mechanical strength. Furthermore, the material is compatible with a wide range of resins, including silicones, epoxies, and unsaturated polyesters. Nelcote’s reinforced epoxy prepreg also offers excellent electrical properties and thermal stability.

What additional properties can I expect from reinforced E-Glass?

The addition of glass fibers creates a stiffer, more uniform composite material with improved physical properties. E-Glass reinforced epoxy is ideal for creating a wide range of industrial composites and applications for the aerospace, automotive, and general manufacturing sectors. Therefore, the material offers superior strength, durability, and electrical properties.

The addition of 20 percent glass fibers improves the ultimate tensile strength and fracture toughness of epoxy by approximately 50 percent compared to conventional un-reinforced (non-reinforced) epoxy.

Product Forms

Nelcote E-761 Epoxy Prepreg, 120 E-Glass Reinforced contains a prepreg of 90 percent E-Glass fiber and 10 percent polyester fiber. The material has an epoxy equivalent weight of approximately 280, and it can be helpful in a wide range of applications. In addition, the material offers exceptional formability and high shear strength, along with excellent surface hardness.

Compatible with Autoclave, Vacuum Bag/Oven, or Press Cure processes:

We can cure E-761 in an autoclave, vacuum bag, or oven. Additionally, it has a pot life of approximately 7 hours at room temperature, which means users can begin to process the material as soon as it is delivered. Nelcote’s updated curing literature offers specific guidance on the curing process based on material composition and thickness. In addition, users can consult Rayming PCB & Assembly for more information about their available curing processes and material delivery options.

b)  Also available on aluminized fiberglass (TEF-7):

Nelcote also offers a version of E-761 prepreg adhered to an aluminized fiberglass carrier. This material has the same properties as the standard E-761 prepreg. As a result, it is available in varied thicknesses.

c)  Solution coated fabrics up to 60 inches wide:

Nelcote E-761 Epoxy Prepreg, 120 E-Glass Reinforced can be applied to various fabrics. Its properties are like those of conventional epoxy coatings. However, users need to care about the fabric and the curing process (as described above). Users should consult Nelcote sales representatives for available fabrics and coating thicknesses.

d)   Available on a wide variety of reinforcements:

Nelcote also offers a range of reinforced epoxies available on various reinforcements, including glass, quartz (including Astroquartz®), graphite, aramid, and various laminates. So, these epoxies are available in varying thicknesses, and they exist in various colors and sheens.

How do I get started with reinforced E-Glass?

Thermally cured property refers to the material’s thermal and mechanical properties. We usually describe it by high-temperature strength; glass fibers in reinforced epoxy (E-Glass) are comparable to Kevlar® in terms of high-temperature tensile strength, leading to a greater ability to withstand heat exposure during manufacturing /or transportation. In addition, reactive fiberglass in E-Glass is generally easier on the coated fabric than conventional fiberglass.

Nelcote E-761 Epoxy Pre-Preg, 120 E-Glass Reinforced is a high-speed material used to create advanced composite composites, which are lightweight and impact resistant. In addition, the material offers excellent formability. As a result, it can be helpful for various applications, including adhesives for luggage tags, magnetic tape, and electric wire insulation.

Applications

1. Widely specified on commercial and military aircraft programs:

Nelcote’s reinforced epoxy appears on several commercial and military aircraft programs. The material creates various structural panels, fuel cells, and interior components.

2.   MRI Resonators:

Nelcote reinforced epoxy is also used to create MRI resonators and nuclear spin couplings. The material features excellent stiffness and strength to resist heat/stress while maintaining mechanical properties that ensure good signal quality.

3. Sandwich Panels:

Nelcote reinforced epoxy is also used to create structural panels (e.g., sandwich panels in manufacturing, structures in military and critical infrastructures). The material offers high mechanical properties, improved strength, and superior abrasion resistance.

4.   Secondary Aircraft Structures:

Nelcote’s reinforced epoxy helps create secondary aircraft structures like fuel cells, wall and floor assemblies, and interior components. The material offers superior thermal, water, chemical, and electrical properties.

5.   Aircraft Interiors:

Nelcote reinforced epoxy also creates interior components such as bulkheads and fuselage skins. The material has excellent thermal, water, chemical, and electrical properties.

6.    Radomes:

Nelcote reinforced epoxy is also used to create radomes for the aerospace, defense, and satellite industries. The material offers excellent resistance against impacts, heat, and chemicals.

Features and benefits

1. Wet service temperatures up to 180°F:

Nelcote reinforced epoxy is available in a variety of thicknesses and colors. In addition, the material has excellent thermal, water, and chemical resistance (IP 45 ratings) and electrical properties. As a result, the material can be helpful in applications ranging from liquid nitrogen to high-temperature brazing (1200°F).

2.   Flame and fire retardant per FAR 25.853

Nelcote reinforced epoxy is rated for flame and fire retardant per FAA/DOT/FAR 25.853. In addition, the material has a UL94 V-0 rating when cured, which means we can use it in electrical panel insulation and wire harnesses.

3. Good electrical properties

Nelcote reinforced epoxy is an in-house developed material that offers excellent electrical properties in various applications.

4.   Flexible cure temperature range of 180°F to 250°F

Nelcote reinforced epoxy has a fully flexible cure temperature range of 180°F to 250°F. It means we can process it in various applications.

5. Controlled flow for ease of processing

Nelcote reinforced epoxy offers controlled flow for ease of processing. This allows the material to be processed at lower temperatures, preventing overheating and distortion.

6. Highly recyclable

Nelcote reinforced epoxy is highly recyclable. We can regenerate it at up to 90% of the original resin content, and it has excellent mechanical properties (e.g., temperature strength). The material also features a long storage life, making it cost-effective for its users.

7. Lightweight and lower density

Nelcote reinforced epoxy is a lightweight material that we can use to create in-house produced components with reduced weight. The material has lower density and tensile strength than carbon fiber, which makes it more cost-effective for its users.

8. High strength and stiffness resistance

Nelcote reinforced epoxy has high strength and stiffness resistance compared to conventional reinforced glass fibers.

9. Excellent physical and electrical properties

Nelcote reinforced epoxy has excellent physical properties (e.g., flexural modulus, tensile strength, hardness). The material has good surface flatness and smoothness due to the low coefficient of thermal expansion. The material also offers good electrical properties (e.g., high dielectric strength, resistivity, and thermal stability).

Conclusion

Reinforced epoxy is ideal for advanced composite processing, industrial applications, and large-scale manufacturing. Reinforced formulations improve the strength of the material without increasing weight or altering the formability. E-Glass offers high mechanical strength and provides abrasion, impact, and fracture-resistance benefits.

Nelcote’s reinforced epoxy can provide significant improvements in mechanical strength. In addition, the material is compatible with a wide range of resins, including silicones, epoxies, and unsaturated polyesters.