Electroconductive Fibres New Chemical Technologies, Static control solutions, products - patented electroconductive technology presentation:

EUROPA NCT Sp z o.o. , 05-230 Kobyłka k/Warszawy, ul. Napoleona 2 , POLAND
Tel./fax 0048227861843, 0048227861849, europa@nct.pl

EURO-static - electroconductive and antibacterial fibres and yarns based on PAC and PACM are the core products offered by the Europa NCT Sp z o.o. The antistatic coat is formed by copper sulphides and silver, which has got semiconductive properties and therefore make the whole polymer electroconductive.

• PAC - polyacrylonitrile - level of resistance ~ 10¹ Ω x cm
• PAC-M -flame retardant modacrylic - level of resistance ~ 10² Ω x cm
  • Colors: olive green, malachite green, navy blue, dark gray,
  • Available: staple, sliver, to
  • Thickness: from 3,3 dtx
  • The other options under request

The carpet industry is the main purchaser of EURO-static electroconductive fibres. Even as small a content of EURO-static fibres as - 0,5-1,5% is enough to provide excellent antistatic properties to the whole carpet or covering. This effect is independent of humidity and remains unaffected by multiple washes and coverings or carpets themselves do not have to be earthed.

Added to automotive or furniture upholstery, just like carpets, EURO-static fibres eliminate, the problem of static electricity, i.e. those annoying discharges perceptible particularly in winter at low humidity, as well as the discharges which are especially dangerous to sensitive electronic devices, e.g. computers, meters, and measuring devices. Our electroconductive fibres perfectly blends with other fibers.

This property is applied in production of air blankets (blend with flame retardant acrylic) and antistatic filters (blend with PET). Up to 4% of electroconductive fibers in the blend provides perfect electrical properties of finished products.

Specific chemical composition of electroconductive fibres EURO-static provides good electromagnetic (including radar) waves screening properties. Such fibres are applied for military and special purposes.

From the end of 1998 - all electroconductive fibres and yarns EURO-static have antibacterial finishing. It gives new possibilities for application, from dry industrial filters to air conditioners for buildings or cars. We have performed tests confirming antibacterial properties on the following bacteria's strains:

• Staphylococcus aureus
• Enterococcus faecalis

Main application of Euro-static electroconductive fibres and yarns:

• carpets
• floor coverings
• automotive, airplane and furniture upholstery
• electromagnetic shields
• air / gas filters
• shielding of power and communication cables
• antistatic mats for computer and measurements stands
• working clothes
• air blankets
• antibacterial shoes inserts
• air conditioning equipment
• filters for vacuum cleaner
• brushes
• clothes with heating elements
• antistatic wipers for dust
• antistatic package for electronic and computer elements
• bags for air parcels
• antistatic addition for PP big-bags
• conveyers belts
• magnetic additions for paper
• military application
• antistatic gloves.

Electroconductive and Antistatic Yarns

On the basis of our Euro-static electroconductive fibers we produce following yarns: from 25 tex to 110 tex with 1, 2 and 3 plies. In the case of other yarn count - please contact us.

100% PAC and PACM electroconductive yarns

Bicomponent electroconductive yarns

Combination of PAC yarn and monofilament PET, PP, PA

Antistatic yarns

Combination of PAC and PET, PP, PA and other fibers

Core spun yarns

Core monofilament PET wrapped with electroconductive yarn

Yarn counts, count and direction of twists, colour, percentage of components in bicomponent yarns - according to customer's requirements

Level of electroconductivity: from 10¹ Ω

Contact:
EUROPA NCT Sp z o.o.
05-230 Kobyłka k/Warszawy
ul. Napoleona 2
POLAND
Tel./fax (+48 22), 786 18 43, 786 18 49
e-mail: europa@nct.pl
https://europa.nct.pl


Electrostatic discharge (ESD) is the sudden and momentary electric current that flows between two objects at different electrical potentials caused by direct contact or induced by an electrostatic field. [1] The term is usually used in the electronics and other industries to describe momentary unwanted currents that may cause damage to electronic equipment.

ESD is a serious issue in solid state electronics, such as integrated circuits. Integrated circuits are made from semiconductor materials such as silicon and insulating materials such as silicon dioxide. Either of these materials can suffer permanent damage when subjected to high voltages, as a result there are now a number of antistatic devices that help prevent static build up.

One of the causes of ESD events is static electricity. Static electricity is often generated through tribocharging, the separation of electric charges that occurs when two materials are brought into contact and then separated. Examples of tribocharging include walking on a rug, rubbing plastic comb against dry hair, ascending from a fabric car seat, or removing some types of plastic packaging. In all these cases, the friction between two materials results in tribocharging, thus creating a difference of electrical potential that can lead to an ESD event.

Another cause of ESD damage is through electrostatic induction. This occurs when an electrically charged object is placed near a conductive object isolated from ground. The presence of the charged object creates an electrostatic field that causes electrical charges on the surface of the other object to redistribute. Even though the net electrostatic charge of the object has not changed, it now has regions of excess positive and negative charges. An ESD event may occur when the object comes into contact with a conductive path. For example, charged regions on the surfaces of styrofoam cups or plastic bags can induce potential on nearby ESD sensitive components via electrostatic induction and an ESD event may occur if the component is touched with a metallic tool.

Prevention
A portion of a static discharger on an aircraft. Note the two sharp 3/8" metal micropoints and the protective yellow plastic.

Prevention of ESD bases on Electrostatic Protective Area (EPA). EPA can be a small working station or a large manufacturing area. The main principle of an EPA is that there are no highly charging materials in the vicinity of ESD sensitive electronics, all conductive materials are grounded, workers are grounded, and charge build-up on ESD sensitive electronics is prevented. International standards are used to define typical EPA and can be found for example from International Electrotechnical Commission (IEC) or American National Standards Institute (ANSI).

ESD prevention within an EPA may include using appropriate ESD-safe packing material, the use of conductive filaments on garments worn by assembly workers, conducting wrist straps and foot-straps to prevent high voltages from accumulating on workers' bodies, anti-static mats or conductive flooring materials to conduct harmful electric charges away from the work area, and humidity control. Humid conditions prevent electrostatic charge generation because the thin layer of moisture that accumulates on most surfaces serves to dissipate electric charges.

Ion generators are sometimes used to inject ions into the ambient airstream. Ionization systems help to neutralize charged surface regions on insulative or dielectric materials. Insulating materials prone to triboelectric charging should be kept away from sensitive devices to prevent accidental charging of devices through induction. On aircraft, static dischargers are used on the trailing edges of wings and other surfaces.

Manufacturers and users of integrated circuits must take precautions to avoid ESD. ESD prevention can be part of the device itself and include special design techniques for device input and output pins. External protection components can also be used with circuit layout.

Due to dielectric nature of electronics component and assemblies, electrostatic charging can not be completely prevented during handling of devices. Most of ESD sensitive electronic assemblies and components are also so small that manufacturing and handling is made with automated equipment. ESD prevention activities are therefore important with those processes where component is touching on equipment surfaces. In addition, it is important to prevent ESD when electrostatic discharge sensitive component is connected with other conductive parts of the product itself. An efficient way to prevent ESD is to use materials that are not too conductive but will slowly conduct static charges away. These materials are called static dissipative and have resistivity values in the range of 105 to 1011 Ohm-meters. Materials in automated manufacturing which will touch on conductive areas of ESD sensitive electronic should be made of dissipative material, and the dissipative material must be grounded.

An antistatic floor mat or ground mat is one of a number of antistatic devices designed to help eliminate static electricity. It does this by having a conductive material embedded within the mat that collects the static. The mat would need to be grounded (earthed). This is usually accomplished by plugging into the grounded line in an electrical outlet. It's important to discharge at a slow rate, therefore a resistor should be used in earthing the mat. Some ground mats allow you to connect an antistatic wrist strap to them.




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