Buck Woodcraft
120 49th Street, Marathon, Fl. 33050
Phone: 305-743-4090
Fax: 305-743-2951
Business Hours:
9 a.m. - 4 p.m. EST. Monday thru Friday
E-Mail: john@buckwoodcraft.com
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Nida-Core Application & Technical Information
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(The following material is drawn from Nida-Core product literature and is provided strictly for your information.)
Nida-Core is an extruded polypropylene honeycomb. Nida-Core's products combine an aerospace technology (honeycomb) with a standard material polypropylene, and an economical manufacturing process--extrusion. Nida-Core honeycomb materials offer the following properties:
Mechanical strength & rigidity
•
Nida-Core cells are solid with each other along their whole length,
affording the unit excellent compressive strength and good shear strength.
• Nida-Core maintains the required rigidity with a substantial
reduction in weight.
• The non-woven polyester scrim,
thermo-fused to the cells, offers superior bond and peel strengths.
Water, corrosion, chemical resistance
• Nida-Core has excellent characteristics of resistance to water, to
corrosion, to bacteria, and to most chemical products.
•Thousands of boats are built every year using Nida-Core as a strong and rot-prooof core.
Superior insulation
• Nida-Core is a great heat insulator, with a R factor of 3.3, up to
5.5 for foam-filled Nida-Core.
• Nida-Core also provides superior sound deadening properties.
Easy
to use
• The unique properties of extruded polypropylene honeycomb allows
superior conformability.
•Nida-Core products are ideal for a very wide variety of facings, whether conventional like wood, laminates, metals...or more innovative like fiber glass reinforced thermoplastics or technical textile
•Implementation is easy: laminating, gluing, welding or simple cutting.
Impact and fatigue resistant
• Nida-Core polypropylene's toughness provides excellent impact
properties.
• Polypropylene's resiliency, combined with Nida-Core's outstanding bonding
properties, results in a higher fatigue resistance.
Environmentally Friendly
Plastic
Honeycomb materials contribute in
the fight against noise through their structure. They are rot-proof and
corrosion-proof. Nida-Core honeycomb materials are currently used to
transform flows which are initially turbulent into laminar flows. And
Nida-Core's plastic materials are recyclable.
Nida-Core H8-PP Polypropylene Honeycomb
Specifications
Nida-Core H8-PP is a true
hexagonal cell honeycomb extruded from polypropylene. To facilitate use
with adhesives and laminating resins, a non-woven polyester scrim has been
thermo-fused to both sides of the core. To prevent filling the cells with
resin, a polypropylene barrier film is bonded under the scrim. For thermal
fusing to polypropylene matrix skins the core can be supplied without
scrim and film. While Nida-Core, uniquely, will conform to very compound
contours with moderate pressure or vacuum, it is also available scored on
2" centers for open contact mold lamination. Color is clear translucent
although it may be tinted on special order.
PHYSICAL AND MECHANICAL
PROPERTIES
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SI units
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English
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Cell size (diametrically opposed cell walls) Density Compressive strength (NFT 56101) Modulus of Elasticity Tensile Strength (NFT 56130) Shear Strength (NFT 56118) Shear Modulus Effective Temperature Range |
8
mm 80 kg/m3 1.3 MPa 15 MPa .5 MPa .5 MPa 8 MPa -40 to +110C |
5/16" 4.8 lb/ft3 188 psi 2175 psi 72.5 psi 72.5 psi 1160 psi -40 to +230F |
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| Thermal Conductivity (by Fourier Law where 10% of the conductive path is poly-propylene and 90% is air) |
k=.03
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| Water Absorption (24 hours) |
0.1 %
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| Flammability (Available with flame retardant polypropylene or phenolic foam fill) |
normal
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| Sound attenuation |
greater than 22dB
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Fabrication, Joining & Finishing Alternatives
