Nylon is the toughest and most durable synthetic filament available. Nylon bristles discourage bacterial growth and resist most acids. It is non-shedding, and is excellent for cleaning and scrubbing applications with its strong abrasion resistance properties. It does not scratch most surfaces. Nylon is a versatile synthetic fiber, manufactured mainly in the United States. Nylon has a high degree of durability, is resistant to most common chemicals and has excellent bend recovery. Three grades of nylon are available: Type 6, Type 6.6, and Type 6.12. The wear ability is similar between all three, however the higher the grade the less moisture it will absorb. The nylon that we stock is black or natural (clear or slightly white), and .003” to .050” in diameter. Crimped and/or level filaments are available.
Polypropylene is a popular synthetic filament used in a wide variety of applications. Like nylon, it is mainly manufactured in the United States. Its low specific gravity offers a low cost high performance fiber for wet or dry applications. Polypropylene has excellent stiffness when wet, is non-brittle, is inert to most solvents, oils, acids and chemicals, and is fungus resistant. The polypropylene, which we stock, is black or natural in color and .006” to .060” in diameter. Crimped and level filaments are available.
Tampico is a vegetable fiber obtained from the leaves of the agava lechuguilla plant, which grows in Mexico. The color is creamy white (slightly yellow) but can be dyed, usually dark gray. Tampico can be used either wet or dry. Its high absorbency rate makes it suitable for low abrasion scrubbing and washing applications. It is also heat, alkali and acid resistant.
Horse Hair soft, resilient and long lasting. Excellent for sweeping polished surfaces, Horse Hair works well for dusting, flux removal and general cleanup. It is non-conductive. The hair is collected and processed in the United States, Canada, Argentina and China. The value of the hair is determined by the length and stiffness, with the price increasing as the length and relative stiffness increase. The color is usually a brownish-black mix and is comparatively soft to slightly stiff depending on bristle length. Horsehair should be used dry for polishing, scratch free cleaning or sweeping, or in higher temperature applications (375 degrees max.).
Goat Hair is a very soft yet fine natural material with properties that make it excellent for use in fine polishing and cleaning. It is non-conductive.
Hog Bristle (or Chung King) is resilient and is the stiffest natural material available. A Hog Bristle brush will provide the best possible cleaning. It works well when dealing with sticky, crusty materials or viscous fluids. It is non-conductive.
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Nylon-AS eliminates the problem of static electricity in many applications by providing a rapid dissipation of static charge faster than standard nylon filaments.
Studies have shown that the ability of materials to dissipate charge generated on their own surface by contact or sliding actions is well matched by the decay of charge deposited from a high voltage corona discharge. Nylon-AS eliminates the problems generated by static electricity in many applications by providing a rapid dissipation of static charge.
Conductive materials have to be grounded in order to dissipate charges. Antistatic materials inhibit the generation of static charges.
Static decay is the time required for a sample to dissipate a percentage (90-99%) of an initial charge of 5 KV (both positive and negative). A charge is induced on the sample by contact with electrodes, and is then grounded. An electronic voltmeter makes electrostatic (non-contact) measurement of the charge on the sample.
| |
Charge Decay @ 21.1°C (70°F), 29% r.h. |
| SAMPLE |
t(5000 ? 50 V)
[sec] |
t(-5000 ? 50 V)
[sec] |
Average
[sec] |
| Nylon-AS (AntiStatic) Filaments |
2.06 |
1.53 |
1.8 |
| Standard Nylon Filaments |
100 |
100 |
100 |
Charge Decay: The migration of charge across or through a material leading to a reduction of charge density or surface potential at the area where the charge was deposited.
Charge Decay Time: The time required for the local charge density or surface potential to fall to a selected percentage of its initial value.
Corona: The generation of ions of either polarity by a high localized electric field
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Conductive Nylon 6.6 is a type 6.6 nylon with an electrically conductive carbon suffused onto the surface. The filaments have a round cross section and have a coating thickness of approximately 1 micron. Conductive Nylon is available in 0.28 mm (.011”), 0.41 mm (.016”) and 0.52 mm (.020”) diameters.
The conductivity is affected by humidity and is unaffected by solvents, except strong acids. It is suitable for uses up to 230 degrees (F) and will not crack off during flexing. The coating will wear off at about the same rate as the rest of the fiber.
| Typical Physical Properties |
0.28mm |
0.41mm |
0.52mm |
| Diameter, millimeter |
0.277 |
0.41 |
0.52 |
| Diameter, inches |
0.011 |
0.016 |
0.020 |
| Denier per filament |
630 |
1330 |
2150 |
| Breaking Load, grams |
3800 |
7050 |
9700 |
| Breaking Load, pounds |
8.4 |
15.5 |
21.5 |
| Elongation at Break, % |
34% |
30% |
30% |
| Initial Modulus MPa |
323 |
323 |
323 |
| Initial Modulus KPSI |
47 |
47 |
47 |
| Yield, meters per kg |
14200 |
6800 |
4200 |
| Yield, feet per pound |
21300 |
10200 |
6300 |
| Electrical Properties |
|
| Ave. Resistance, ohm/cm |
10 x 103 |
7 x 103 |
6 x 103 |
| Max. Resistance, ohm/cm |
15 x 103 |
10 x 103 |
9 x 103 |
| Specific Resistivity 8 ohm-cm |
Conductive nylon is available mixed with nonconductive fibers to provide a less expensive filling.
Thunderon® is a fiber that has been chemically bonded with a layer of copper sulfide. When this fine (.0015" diameter) conductive fiber nears the surface of static charged material, it will ionize the air, which acts as a carrier of electrons away from the charged material. The bristle material has the bend recovery and resilience associated with acrylic fiber. It can be mixed with Goat Hair or other materials to add stiffness without diminishing effects. This outer layer becomes a part of the host fiber itself, which precludes the 'flaking' problem experienced by other conductive fibers. The fiber diameter is as fine as .004 cm and its conductive layer is as thin as 300~1,000??. It has electrical specific resistance of 10-1 - 10-2 ??cm
| PHYSICAL PROPERTIES |
THUNDERON® |
| Form of Product |
Acrylic |
| Tenacity (g/d) |
2.8-3.0 |
| Elongation |
22.0-24.0 |
| Specific Gravity |
1.18 |
| Moisture Content % |
2.0 |
| Softening Point (º/C) |
190-240 |
| Specific Resistance [/cm] |
10-1-10-2 |
NOTE: Conductive fibers are NOT recommended for use with unencapsulated electronic microcircuits. Minute pieces of conductive material have been known to cause short circuits.
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Brass Alloy 260 - is a softer wire than stainless steel. This brass wire is 70% Copper and 30% Zinc. Precision Brush only uses the highest quality brass, which is highly conductive and corrosion resistant. This wire is used in the manufacture of all brass brushes Uses that include burnishing, polishing, non-sparking static removal and some de-burring or material removal.
Phosphor Bronze Alloy 510 - This wire is 95% Copper and 5% Tin. The addition of tin to copper effectively increases the fatigue strength. Phosphor Bronze is corrosion resistant, has good fatigue life, and has high electric conductivity, low elastic modulus and high tensile strength, making it an excellent product for
Stainless Steel is a highly corrosion-resistant wire to be used where contamination or rust is a problem. Fine wires .003" diameter, is excellent for burnishing without removing the base material. Stainless Steel is used to prevent harmful ferrous deposits on brushed parts. It is non-shedding
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