SNT Business

Introduction to melt-blown/ nano fiber/ carbon fiber technologies

Nano fiber technology

Introduction to nano fiber technology

Electro-spinning method refers to a process of manufacturing fibrous materials by supplying a fixed amount of polymer solution or melts by a metering pump, passing them through small orifices, and applying high-voltage power.

The discharged solution or melts form Tayler cones due to applied high-voltage power and generate small nano fibers after a process of stretching, whipping, splitting, etc.

Nano fibers are obtained as a form of web in the trapping device earthed or charged with electricity to the opposite polarity.

For nanofibers, the fiber diameter is controlled and the physical properties of nanofiber web determined by the viscosity, flowability, high voltage, lithification rate, volatilization rate of solvents, etc.

Main features and applications

Innovative functionality

Nano-size of fibers which surpass the physicochemical limit of existing fibers
Next-generation material expected to have innovative functionality and extensive applications
Dream material which combines both the advantages of fibers and precision of thin films and implements excellent functionality

High-functional fiber

Fiber with the precision of thin films and physicochemical properties in which air/ water penetrates and breathes selectively
High-functional fiber: More than 10 times of efficiency compared with existing materials (strength, lightness, flame-resistant, anti-fouling, and anti-bacterial effects)
Biological/ chemical protection for military purposes

High-efficiency/ high-performance

High-efficiency and high-performance material which has much wider specific surface area than microfiber materials and smaller sizes of pore than bacteria
Fiber whose yarn diameter is less than 1 ㎛ (10 to 100 times thinner than microfibers)
Higher surface area per unit volume (1/10 to 1/100 of super fine microfibers) light weight
Smart fabric which blocks micro particles or bacteria due to small spacing and has good breathability and wind-breaking ability

Applications (Textile product group)

Slide Spunbond 70 fibers/c㎡
16 microns diameter
0.3 ㎡/g nanofiber separator, meltblown spinning system Flashspun 400
10 microns
1 ㎡/g hybrid meltblown technology, analysis cooperation viscometer Meltblown 4000
3 microns
2 ㎡/g meltblown spinning system, hybrid meltblown technology Glass Fiber 110,000
0.4 microns
8 ㎡/g analysis cooperation viscometer, analysis cooperation Ion coater Expanded PTEE 1-2 million
0.08 microns
21 ㎡/g nanofiber korea, pitch based ACF Source : Tucker Norton, Ph.D(Dupont), “Hybrid Membrane Technology”, Filtration & Separation Vol 44(2007), p28-30

Nanofiber Applications

Slide Healthcare - Drug delivery
- Biosensors
- Wound dressing
- Wound healing ; antibacterial
- Protective clothing
- Hemostatic devices
- Antimicrobial filter Microreactors snt nanofiber, nanofiber separator Tissue engineering Scaffolds - Muscles
- Bones
- Cartilages
- Skins
- Blood vessels
- Neural tissues
- Others snt spinning system, snt nanofiber Polymer Nanofiber Sensors - Physical applications
- Chemical applications
- Biological applications
- Nano sensors
- Electronic/optical nano-devices pitch based ACF system, snt spinning system Reinforced composites Energy generation and storage - Supercapacitors
- Solar cells
- Fuel cells
- Photovoltaic cells
- Hydrogen storage
- Battery & Separator
- Printable electronics nanofiber korea, pitch based ACF Environmental applications - Separation
- Noise reduction
- Desalination
- Filtration(water, Air, Engine)
- Adsorption(heavy metal ions
& organic compounds
- Insect repellent/blocking analysis cooperation Ion coater, nanofiber korea Catalyst & enzyme carriers - Catalyst for chemical reactions
- Enzyme for biological processes analysis cooperation viscometer, analysis cooperation Ion coater pitch based ACF, pitch based ACF system