Technical textile Fibres used in technical textiles
1. INSTITUTE OF CHEMICAL TECHNOLOGY
MUMBAI
BY- KANHAYA LAL KUMAWAT
FIBRES USED IN TECHNICAL TEXTILES
2. What are Technical Textiles?
Textile Institute Manchester defines technical textiles in the following words:
"Materials and products intended for end-uses other than non-protective clothing,
household furnishing, and floor covering, where the fabric or fibrous component is
selected principally but not exclusively for its performance and properties as opposed to
its aesthetic or decorative characteristics" (Textile Terms and Definitions, TI,
Manchester, 10theEd.)
3. Technical Textiles can also be defined as:
Technical textiles are materials meeting high technical
and quality requirements (mechanical, thermal, electrical,
durability...) giving them the ability to offer technical functions"
4. Fibres used in Technical textiles:
Conventional fibres
High strength and high modulus organic fibres
High chemical and combustion resistant fibres
High performance inorganic fibres
Ultra fine and novelty fibres
7. High strength and high modulus organic
fibres:
Dyneema or spectra: Weight for weight this fibre genus is claimed to be
15 times stronger than steel and twice as strong as aromatic polyamides
such as Kevlar. It is also low in density, chemically inert and abrasion
resistant.
8. High strength and high modulus organic
fibres:
Other high tenacity and high modulus fibres include the isotropically
spun Technora (Teijin) and Supara, based upon para-aramid
copolymers, with slightly lower maximum strength and modulus
values than Kevlar.
9. High chemical and combustion resistant fibres
LOI and tenacity range of some high chemical and
combustion resistant fibres:
10. High performance inorganic fibres
Glass
Asbestos
Carbon
Inorganic fibres are produced in microcrystalline form and not more in
the normal textile-fibre form.
11. Ultra fine and novelty fibres:
Ultra-fine or microfibres were developed partly because of improved
precision in engineering techniques and better production controls, and
partly because of the need for lightweight, soft waterproof fabrics that
eliminate the more conventional coating or lamination processes.
These are usually made from polyester and nylon polymers.
12. Ultra fine and novelty fibres contd…
Cripy 65 is a scented fibre produced by Mitsubishi Rayon (R) who have
enclosed a fragrant essence in isolated cavities along the length of
hollow polyester fibres.
The scent is gradually released to give a consistent and pleasant aroma
13. Major 10 fibres used in technical textiles :
Polyethylene
Polyester
Nylon
Carbon
Polypropylene
Glass
Viscose
Metal
Acrylic and
Protein
14. Polyethylene fibre
It has the following properties:-
Very good ultra violet resistance
Excellent electrical and chemical resistance
Low moisture absorption level
Very good abrasion resistance
Low specific gravity
Higher energy is needed to break because of specific modulus and
high specific strength
15. Applications of polyethylene
• Medical implants
• Cable and marine ropes
• Sail cloth
• Composites like Pressure vessel boat hulls, sports equipment, impact shields
• Fish netting
• Concrete reinforcement
• Protective clothing
• Can be used in radar protective cover because of its low dielectric constant
• Can be used as a lining material of a pond which collects evaporation of water and containment
from industrial plants
• Useful in geotextile applications
16. Carbon fibre• Properties:
• Physical strength
• Specific toughness
• Light weight
• High dimensional stability
• Low coefficient of thermal expansion
• Low abrasion
• Good vibration strength, damping and toughness
• Biological inertness and x-ray permeability
• Chemical inertness
• High corrosion resistance
• Fatigue resistance, self-lubrication, high damping
• Electrical conductivity
• Electromagnetic properties
17. Application of Carbon Fibre:
• Sporting goods, aerospace, marine and road transport
• Pickup arms, audio equipment, robot arm, loudspeakers
• Medical applications in x-ray and surgery equipment, ligament
and tendon repair and in implants
• Nuclear field, chemical industry, pumps, seals, valves and its
components in process plants
• Radiological equipment
• Novel tooling, brushes, automobile hoods casings and bases for
electronic equipment
• Missiles, aircraft brakes, aerospace antenna and support structure
• Large telescopes, waveguides for stable high-frequency (GHz)
precision measurement frames and optical benches
18. Glass fibre
Properties
High strength
Non flammable
Relatively insensitive to moisture
Good electrical insulation
High production rates
Relatively low density
Good chemical resistance
Relatively low fatigue resistance
Good strength properties in various conditions
Relatively low density
Low modulus
Good electrical resistance
Low cost
19. Application of glass fibre
Reinforcement material in polymer matrix composites
Laminate structures can be used in storage tanks
Woven fabrics are used in production of surfboards,
composite panels and other similar devices
Useful for good thermal insulation
20. Metal fibre
Properties:
Good thermal and electrical conduction
Wear resistance and corrosion
Elastic module and high intensity
Protection from magnetism and static and radiation
Better shield effect
21. Applications of metal fiber
Automotive manufacturing
Petro chemistry
Environmental protection
Automobile safe gasbag
Shield dress of protection from magnetism
Bulletproof vests
Anti-fake material
Dust proof ultra clean clothes
22. Growth rates and estimated market size of technical textiles during
2007-12