Gillcore® HK is a Kevlar® N636 reinforced honeycomb. N636 is the commercial designation for DuPont's Kevlar paper for use in honeycomb core. It offers a significant 25% weight savings over Nomex® honeycomb.

Gillcore® HK is a Kevlar® aramid fiber reinforced honeycomb which is coated with heat resistant phenolic resin. Kevlar® honeycomb cores exhibit enhanced performance characteristics over Nomex® honeycomb core in the areas of weight, strength, stiffness and fatigue. Gillcore® HK provides a wide range of honeycomb types, including different cell sizes, cell geometries, paper thicknesses and densities, for commercial, military, aerospace and defense applications.

Reinforcement

Para-Aramid Kevlar paper

Resin

Phenolic

Description Example

HK – 1/8 – 2.5 – OX

 

HK: designates aerospace grade Kevlar aramid fiber

 

1/8 (i.e.): cell size: 1/8, 3/16, 5/32 inches

 

2.5 (i.e.): nominal density: 2.0, 2.5, 3.0, 4.0, 4.5, 6.0lb/ft3

 

OX (i.e.): over expanded cells

Configurations

HK131, HK132, HK141, HK162, HK163, HK262, HK322, HK1033, HK1061, HK2061, HK3061O

 

Direction

Hexagonal Core (ribbon dimension as block width)

Hexagonal Core (ribbon dimension as block length)

Overexpanded Core

L (Ribbon dimension)

Typical 48”

 

 

 

Maximum 65”

Maximum 96”

Maximum 50”

W (Dimension normal to ribbon)

Typical 96”

 

 

 

Maximum 144”

Maximum 48”

Maximum 144”

Thickness

0.200 – 34”

0.200 – 34”

0.200 – 34”

Structural Orientation

Compressive:

Bare

 

 

Stabilized

 

Plate Shear:

L Direction

 

 

W Direction

Safety Datasheet

Highlights:

·         Physical state: Solid

·         Appearance: Flat Sheets and blocks

·         Color: Brown

·         Odor: Slight

·         pH: Not Applicable

·         Boiling point: Not Applicable

·         Flash point: Not Applicable

·         Vapor pressure: Not Applicable

·         Relative density: Not Applicable

·         Solubility: Insoluble in water

·         Reactivity: Not reactive under normal use and conditions

·         Chemical stability: Stable under normal use and conditions

·         Possibility of hazardous reactions: Hazardous polymerization will not occur

·         Incompatible materials: Strong oxidizing agents, strong acids and bases, especially oxalic and hydrofluoric acid and acyl halides

·         Hazardous decomposition products: Toxic fumes and gases, carbon dioxide, carbon monoxide, hydrogen cyanide, oxides of nitrogen and other toxic and irritation gases can be produced depending on condition of combustion

Technical Datasheet

Highlights:

·         Extremely high toughness, shear strength and shear modulus

·         Corrosion resistance

·         Fire resistant (self-extinguishing)

·         Excellent thermal stability

·         Good formability for curve forming

Applications:

·         Exterior aircraft panels including trailing and leading edges, flaps, ailerons, radomes, fairings, helicopter blades, access panels and doors.

·         Sports and leisure industry such as surfboards, dividing berthing areas, staterooms and hulls for high-performance boats and ships.

·         Ceilings, walls and floors of portable structures. Heat formability for complex and contour components

Specifications:

·         Gillcore Kevlar honeycomb core is qualified to the following specifications:

·         Boeing BMS 8-124, Class 6, Type V, Grades 2.5, 3.0,4.0, 6.0; and Type VI, Grade 2.5

·         Airbus Industrie: AIMS 11-01-004 Grades D, F, P, T, W (ABS5341-A3, A5, C1, C5, C8)

·         Bell Helicopter: 299-947-386: Type 1, Grade A, Classes 2.0, 3.0, 4.5, and 6.0

·         Northrop-Grumman: ACS-MRS-5301, Class 1, 1/8” cell, 6 pcf density

·         Lockheed-Martin: 5PTMDL17-D

·         Meets flammability requirements of FAR 25.853 for cabin interiors and FAR 25.855 for cargo interiors