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Due to the outstanding properties in respect to heat resistance, tensile strength and cut resistance, Twaron® is increasingly used for heat and cut protective clothing. Apart of 100% Twaron® spun yarn, also blends with other high performance fibers are used.
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Recently, several Twaron®-based geotextiles have been developed and proven their success. When applied in the construction business, these geotextiles provide extra rigidity to the structure, permitting construction work on a very thin foundation layer. In addition, Twaron®'s excellent properties guarantee minimum cracking of the asphalt layer throughout a road's service life.
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Twaron® aramid fibers are used in all kinds of composite parts. Its unique combination of properties makes it suitable for a wide range of high performance applications. Twaron® aramid fibers combine the following properties: a high performance/low weight ratio, a high damage tolerance and a good abrasion resistance.
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Twaron® and Technora® high-performance fibers are used in all kinds of composite parts. Their unique combination of properties makes them very suitable for a wide range of engineering plastics.
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Different types of Twaron® pulp are used in: friction materials, sealing materials, technical paper and braided packings.
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Twaron®, Technora® and Teijinconex® fibers are excellently suited for reinforcing mechanical rubber goods, such as hoses, transmission belts, and conveyor belts. Every application makes its specific demands on reinforcing materials.
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Optical Fiber Cables are designed to guarantee the integrity of data transmission through the optical fibers in the cable by protecting the Optical Fibers against mechanical stress during the life of the cable. In order to do so, a peripheral reinforcement of man-made fibers like Twaron® and Technora®, is necessary. In addition to protection, other demands on the cable can be made like non-conductivity, weight or diameter limitations, and specifications concerning flexibility and handling.
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Twaron® and Technora®'s unique combination of properties makes them an excellent material for the reinforcement of ropes and cables with advantages over both synthetic yarns and steel.
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As the result of its superior performance/weight ration, aramid has become the first choice reinforcing material for high performance tires. Whether in car or motorcycle tires, whether optimized towards speed, handling or comfort, Twaron® is increasingly used by the major tire producers to further improve performance while minimizing tire weight.
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Twaron® has excellent energy absorption properties and offers an effective and comfortable ballistic solution with an outstanding cost-performance ratio. At this moment, Twaron® in its many varieties has been implemented in numerous ballistic solutions and saving thousands of lives worldwide.
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KERMEL company manufactures two types of meta aramid fibres:
- Kermel® is a highly technological meta aramid fibre, predominantly used in the manufacture of heat and flame resistant protective clothing.
- Kermel® Tech fibre is dedicated to industrial applications such as hot gas filtration.
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Nextel Ceramic Fibers
3M™ Nextel™ Continuous Ceramic Oxide Fibers 312, 440, 550, 610 and 720 represent a major advancement in refractory fiber technology. This family of metal oxide fibers can be readily converted into ceramic textile products which meet demanding performance requirements in high temperature operating environments. Nextel™ Ceramic Textiles are typically used in aerospace, outerspace and industrial applications.
Because the filaments are continuous and strong, Nextel™ Ceramic Textiles can be produced without the aid of other fibers or wire inserts. Rovings, yarns, fabrics, tapes, sleevings and sewing threads are typical products.
Features of 3M™ Nextel™ Fibers:
- Low elongation at operating temperatures
- Low shrinkage at operating temperatures
- Good chemical resistance
- Low thermal conductivity
- Thermal shock resistance
- Low porosity
- Unique electrical properties
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Chopped fibers are used in compression and injection molding compounds to produce machine parts, gears, chemical valves and computer housings. The finished products have excellent corrosion, creep and fatigue resistance plus high strength and stiffness characteristics.
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Made from 3M™ Nextel™ Fibers, these chopped fibers are used in composite applications. The fibers, commonly chopped to 1/8", 1/4" and 1/2" lengths, are widely known for their role in ceramic underbody tiles which protect NASA's Space Shuttles.
NOTE: These fibers are considered non-respirable. Fibers with diameters greater than 3 microns are considered nonrespirable in humans. 3M™ Nextel™ 312, 440, 550, 610 and 720 Ceramic fibers are 7-13 microns in diameter and therefore pose no known chronic health effects.
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OC® Chopped Strands and Milled Fibers are reinforcements used in thermoplastic and thermoset applications for excellent dimensional stability, shrinkage control, high modulus and chemical resistance. OC® Chopped Strands are cut to a specified length and engineered to improve processing productivity, exceeding the flowability of competitive chopped strands. Unlike chopped strands, OC® Milled Fibers are hammer milled to a specific density to meet customer processing needs. Thermoplastic and thermoset applications include under-the-hood automotive components and appliance housings.
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Chopped strands ER 2011 are made of boroaluminosilcate glass, comprising less than 1% alkalies. It is characterized by good strand integrity. Chopped strands are not stuck together, and their ends are not fuzzy. Chopped strands have the same, repeatable length of fibre sections. The size type put on the filament enables to process it with non-saturated polyester resins as well as phenolic and melamine ones. Chopped strands ER 2011 are for producing polyester moulding compounds of DMC and BMC type. Products made of these compounds can be formed by pressing or injection. Chopped strands ER-2011 can be used to produce articles from phenolic, amino resins and poly-amides as their reinforcement.
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AGY's 401 S-2 Glass Chopped Strands are a unique product developed to meet the needs of the ceramic reinforcement market, as well as other high performance filler materials applications.
The 401 S-2 Glass chopped strands consist of numerous E to L filament continuous fibers cut into short pieces of consistent length. The standard length for the chopped strand product is ¼", or 6.4mm. Other lengths can be produced to order, but are considered non-standard products. The 401 size chemistry designation is applied to the chopped strand fibers. This chemistry is a multi-compatible size, suitable for use in epoxy, urethane, phenolic, and polyamide resin systems, and is also compatible with standard ceramic slurry processes. The 401 S-2 Glass Chopped Strands are designed for use in a variety of processes including compound molding, injection molding, and ceramic casting.
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SIGRAFIL®T is a partially carbonized polyacrylonitrile (PAN) fiber for specific industrial applications.
Applications:
The balance of mechanical properties, chemical resistance and thermal stability of SIGRAFIL® T staple fiber renders it ideal for industrial uses, e.g. as an asbestos replacement in industrial packings and gaskets.
Specific applications:
* Partially carbonized fibers for seals
Key benefits:
Fiber
* High chemical and hydrolytic resistance
* High thermal stability in oxidizing atmosphere
* Low thermal shrinkage
* Adjustable electrical conductivity (low to none)
* Physiological harmlessness
Process
* Superior blending and handling characteristics
* Compatible with most resin/gasket formulations
* Suitable for textile processing
Forms supplied:
SIGRAFIL® T is available as continuous tow and precision cut staple fiber.
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For more than thirty years, Kermel® fibre has had tremendous success in providing innovative solutions for firefighter clothing.
KERMEL has always worked in close relationship with many fire brigades and fire department supply.
KERMEL has developed a very wide range of solutions made out from its Kermel® fibre, from fire resistant knitted underwear to fire suits :
Fire suits
Kermel fire reistant fibre is used in :
- the outer fabric
- the membrane support
- the thermal barrier
- the lining.
These elements are the parts of a multi-layer complex.
The multi-functional nature of this firefighter clothing hinges around four aspects :
- protection
- the integrity of the complex
- comfort
- appearance
Along with our partners, we can offer fire suits made from our fibre which meet the ever-increasing requirements of standard EN 469 in terms of protection, durability and comfort.
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Kermel fibre is a polyamide-imide, classified as a meta-aramid.
Many assets thanks to its chemical structure:
Non-flammability
It is permanently non-flammable by nature. Industrial protective clothing made from Kermel® aramid fibre thus offers maximum protection at very high temperatures (up to 1,000°C), contrary to protective clothing only treated with a fire-retardant that deteriorates over time.
Thermal insulation
Kermel® aramid fibre is an excellent thermal insulator, providing efficient protection from heat, even in lightweight protective clothing.
Thermostability
Kermel® fabrics are flame stable and protective clothing integrity is maintained for a relatively long time, thus allowing for sufficient egress time.
Resistance to chemicals
The chemical inertness of Kermel® aramid fibres provides efficient protection against the majority of chemical agents, even at high concentrations under the effect of splashing.
Permanent colour
The main advantage of Kermel® over competing fibres is the fact that it is solution-dyed during the manufacturing process. This property allows exceptional color fastness. KERMEL offers a range of over 40 colours for your industrial protective clothing !
Extreme comfort
The fibre's low modulus results in Kermel® aramid fabric and knitwear having unequalled drape, softness and comfort.
Impressive appearance
Kermel® does not pill: industrial protective clothing stay looking perfect over time.
Good mechanical resistance
Its high resistance to abrasion allows for the creation of extremely durable industrial protective clothing, that do not deteriorate during industrial wash cycles.
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KERMEL, the leading European company on the market of aramid fibres dedicated to protective clothing against heat and flames, has developed a wide range of innovative textile solutions made out of its Kermel fibres.
The main users are:
- fire-fighters
- military and police forces
- personnel working in hazardous environment
Kermel fibre offers protection against very high temperatures and provide an unequalled level of comfort to workwear.
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HexTow™ fibers from Hexcel are produced in a continuous operation in which the polyacrylonitrile precursor undergoes a series of precisely controlled processes. Exposure to extremely high temperatures chemically changes the precursor, yielding high strength-to-weight and high stiffness-to-weight properties through oxidation, carbonization and graphitization. The successive surface treatment and sizing stages improve bonding and handleability. The resulting carbon fiber is stronger than steel, lighter than aluminum and as stiff as titanium. It can be supplied in two basic forms: Continuous Fiber and Chopped Fiber.
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OC� Milled Fibers are glass fibers, coated with a specific sizing to enhance resin compatibility, and then milled to a specific bulk density. OC� Milled Fibers are produced in two general product forms - powder and floccular - and are used in both thermoplastics and thermosets. In the powder form, molders obtain good flowability with a high bulk density, and benefit from increased productivity and lower manufacturing costs. Molders looking for lower bulk density use the floccular product form with longer glass filaments. Both product forms offer excellent dimensional stability, shrinkage control, high modulus and acid resistance in applications.
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The para-aramidic fibres are of a polymeric nature with exceptional cut-resistance and break resistance properties.
The para-aramidic fibres provide an extremely high impact resistance (anti-ballistic properties), besides cuts and have an important capacity to absorb kinetic energy and vibrations. Over and above all of this an optimum resistance to fire and heat, to chemical agents, a good level of thermal non-conductivity and electrical insulation properties can be added.
Characteristics of the para-aramidic fibre
- High traction resistance
- Extremely light weight
- High impact resistance
- Extremely high absorption of kinetic energy caused by impacts
- Optimum resistance to cuts
- Good resistance to wear and tear
- Thermal and electrical insulation
- Resistance to fire
- Non generation of secondary fragments after impact
- Difficult to impregnate (important for the production of composites, but can be improved by a scouring treatment)
- High cost
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Carbon products: We manufacturer all the grades of 'standard' multiaxial carbon fabrics, plus many unique products that are only possible with our fibre-spreading technology. We work with all the premium fibre producers, and most of our products are made from HS T700 or equivalent.
All fabrics available cut into tapes
These are only our standard products. We also manufacture a very large range of bespoke fabrics to exactly meet our customers' needs.
ST = Stabilised (lightweight yarn layer in 0 &90)
HD = High Drape
UB = Unbalanced
TE = Tapered Edge
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We offer a broad portfolio of high-performance textile products made from carbon-, glass- and aramid fibers. As a leading manufacturer of carbon products we can draw on several decades of experience. The majority of our reinforcement materials are processed into components made from composite materials. Common processing methods include wet lamination, molding, RTM, and the production of prepreg materials.
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MAPEWRAP C BI-AX : Balanced high strength bidirectional carbon fibre fabric. Mapewrap C BI-AX is a bidirectional carbon fibre fabric characterised by a high modulus of elasticity and very high tensile strength. Mapewrap C BI-AX is suitable for repairing concrete structures and to improve flexural and shear strength of reinforced concrete structures damaged by physical-mechanical action, for confinement of axial loaded or concrete elements subjected to compressive and bending stress and for seismic strengthening in earthquake areas.
MAPEWRAP C UNI-AX : High strength unidirectional continuous carbon fibre fabric. Mapewrap C UNI-AX is a uni-directional continuous carbon fibre fabric characterised by a high modulus of elasticity and very high tensile strength. Mapewrap C UNI-AX is suitable for repairing reinforced concrete structures damaged by physical-mechanical action, for confinement of axial loaded or concrete elements subjected to compressive and bending stress and for seismic strengthening in earthquake areas.
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The carbon fibres are composed of a minimum of 95% of graphite structure. The carbon fibre is generally produced from a polymer called polyacrylonitrile (PAN), which is spun first, and then in successive controlled stages is carboninized at about 1800°C.
The result of this process is a very light fibre (density 1,78 g/cm3), very resistant (Tenacity 4800Mpa, modulus of elasticity 240 GPa) and flexible, therefore it is quite easy to process.
Characteristics of carbon fibre
- Elevated resistance to traction
- Elevated modulus of elasticity (traction and compression)
- Extremely light weight
- Low elongation at break
- Very high flexibility
- Easy to impregnate
- Highly fragile
- High cost
- Low resistance to impact
- Electrical conductivity
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