Kynol NOVOLOID FIBERS
Kynol, generally known as novoloid fiber, is characterized by its high flame and chemical resistance. Novoloid fiber technology was initially developed in the United States with commercial production facilities later established in Japan. End uses for Kynol are varied and business development is focused primarily on specialty applications.
Made from an organic formula derived from three-dimensional cross-linked phenolic resin, Kynol exhibits unique properties that provide a distinct advantage in applications as diverse as electric arc protection, gaskets, mechanical packing and friction paper. Over the years, Kynol has also replaced asbestos in various industrial applications and is used as a precursor for carbon and activated carbon fibers materials.
Key characteristics of Kynol fibers, yarns and fabrics
Flame Resistance:
・Inherently flame resistant (contains no halogen or phosphorus)
・Limited oxygen index (L.O.I.) between 30 - 34
・Exhibits minimal shrinkage and smoke emission when exposed to flame
・Will gradually char until carbonized completely
・Due to 3-dimensional cross-linked chemical structure, the fibers are thermoset and will not melt
・Can withstand short-term heat exposure in temperatures > 1000C
・When exposed to extremely high air temperature the fibers carbonize and gradually decompose
・In conditions where there is long-term heat exposure, Kynol is recommended for temperatures < 150˚C (300˚F) in air and < 250˚C (482˚F) in absence of air
Chemical resistance:
・Strong resistance to acids, alkalis and organic solvents.
Main methylol groups found in Kynol
cross-linked to composite material to create a chemical bond.
Typical properties
Color | Gold |
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Diameter | 14~33μm |
Fiber length | 1~100 mm |
Specific gravity | 1.27 |
Tensile strength | 13~18cN/tex |
Elongation | 10~60% |
Modulus | 3000~4000 N/mm2 |
Moisture regain | <6.0% |
Combustibility (L.O.I) | 30~34% |
Heat resistance | 150~250℃ |
Specific heat | 1.6~1.8 J/g.℃ |
Thermal conductivity | 1.3~2.5×10-4 W/m.K.℃ |
Coefficient of thermal expansion | 10~30×10-6/℃ |
Thermo-Gravimetric Analytics
Smoke Emission
Chemical resistance
Affinity with resin
Kynol novoloid-based carbon products are well regarded for their high flexibility and workability (low modulus) and for excellent compatibility with resins and elastomers.
Kynol products
Fibers |
Staple: 2-5d x 51, 70, 100mm Non crimp & crimped Chopped 6mm Milled 2d, 5d, 10d |
Applications ・Joint Sheet ・Packing, Gasket ・Fire blocking layer for Seat ・Additive for FR materials ・Heat Insulators ・Clutch papers ・Woven Blake, Blake lining, Pad ・Industrial apparel, gloves ・Fire-fighting garment ・Electric cable cover |
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Yarns |
Spun Yarns Tow |
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Felts |
Weight 80~300g/㎡ |
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Woven fabrics | Weight 100~300g/㎡ |
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Aluminized | Weight 430~590g/㎡ |
Carbon Fibers
Kynol novoloid-based carbon products are well regarded for their high flexibility and workability (low module) and for excellent compatibility with resin and elastomer.
Activated Carbon Fibers
Kynol activated carbon products combine high effective surface area with good textile properties, and are available in wide range of forms including fibers, tows, felts, fabrics and papers.
Typical properties
Carbon Yarn |
Carbon yarns 1.0~3.0g/m |
Packing High-temp. insulator |
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Carbon Cloth |
Weight 300g/㎡ 95 wt.% Carbonized |
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Activated Carbon Fibers |
Specific surface area BET 800~2,000㎡/g |
Air filter Mask filter Water filter Electrode for EDLC Adsorbent for solvent recovery apparatus |
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Activated Carbon Felt |
Weight 70~200g/㎡ Specific surface area BET 800~1,800㎡/g |
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Activated Carbon Cloth |
Weight 90~200g/㎡ Specific surface area BET 800~1,800㎡/g |
Product list
From milled and staple fiber to yarns, fabrics and carbon precusors, our products address a wide variety of needs. Numerous products are available as regular production items. Please contact us to choose appropriate product for your application or to discuss development of a product to meet your specific requirements.
The below links provide our typical products for your reference: