Needle punched filter cloth

Needle punched felt are mainly used for liquid filtration, air filtration and dust collection. Compared with ordinary filter material, needle-punched felt has many advantage as following:

 

1. High hole rate and good air permeability can increase the loading ability of the equipment and reduce loss and energy consumption.

2. High efficiency of cleaning and low density of gas. Gas density can be greatly lower than the country standard stipulation.

3. After heating, singeing and coating treatment, the surface should be smooth, difficult to stop up and out of shape, easily-dedusting and long using-life usually 1 to 5 timeshare than mechanical filter cloth.

4. Extensive use and good chemical chemicals stability. It can filter normal atmospheric temperature or high temperature gas including corroding gas mixed with acid and alkali, water, oil.

 

Needle punched felt is widely used in metallurgy, chemical industry, building material, smelting, generating electricity, pottery, machinery, mine, petroleum, dyestuffs, food, grain processing, etc. It is an ideal medium to separate liquid from solid and ideal material to purify and filter gas.

 

Nomex filter cloth(also called aramide )

 

Nomex, a para-aramid also called Aramid 1313. Characterized by good heat resistance, high strength. It is a kind of material which can maintain stability for long time under 250 degree celsius.Acupuncture products are mainly used for high temperature filter material and insulation material. Dupont NOMEX paper, which is an aromatic polyamide, usually referred to as an aromatic polyamide, the molecular structure of this material is particularly stable, the NOMEX superior performance is resulting, it has excellent high temperature, flame retardant, non-toxic, and good electrical and mechanical properties.

 

The characters of the NOMEX

 

1, inherent dielectric strength

 

Product capability of after calendering treatment Nomex [1]; 18 ~ 40KV/mm short voltage field, without using varnish and the resin for further processing; NOMEX ®; product having a low dielectric constant, thus making the insulating and cooling more uniform electric field distribution in the medium;

 

2, the mechanical toughness

 

Calenders NOMEX ® [1]; strength of the product is very high elasticity, tear resistance and abrasion resistance are good, thinner products with flexibility;

 

3, the thermal stability

 

NOMEX ®; product has the recognition of the UL material temperature rating of 220 ° C, representatives placed 220 ° C continuous to maintain effective performance for more than 10 years;

 

4, the Chemical Compatibility

 

NOMEX ®; substantially independent of the impact of most solvent, and very acid-resistant, alkali corrosion, it is also compatible with all varnishes, adhesives, transformer liquid lubricants and Frozen agent. , NOMEX [1]; nor will it be insects, fungi and mold damage;

 

5, the low temperature performance

 

Under the boiling point of nitrogen (77K), NOMEX [1]; T410-type insulating paper and Nomex ®; 993,994 laminate tensile strength exceeds the value of the intensity at room temperature;

 

6. Moisture sensitive

 

NOMEX ®; products in the relative degree of humidity 95%, the dielectric strength is completely dry state of 90%, and the same time, many of the mechanical properties are actually improved;

 

7, resistance to radiation

 

Even ionizing radio intensity up to 800 Mrad (8 MB Gy), NOMEX ®; product also largely unaffected and still maintain its mechanical and electrical properties after 8 times this dose of radiation;

 

8, non-toxic / flame
 

 NOMEX ®; product does not have any known human or animal toxicity. NOMEX ®; product does not melt in the air, not combustion. And at 220 ° C when the limiting oxygen index (LOI) of greater than 20.8 (typically empty combustion threshold), and therefore does not burn. NOMEX ®; product meets the flammability requirements of UL94V-0 rated; enhanced transformer functions to increase motor life and reliability