classification
 
Water-repellent and oil-repellent needle-punched felt
2017/12/5 23:10:31 阅读次数:965

During operation of the bag filter , the gas contains more moisture and dust and oily dust deliquescent hygroscopic and easy , it is possible to generate a water film on the surface of dust or the film adhesion is increased , although this helps catch Dust collection , but it will make it difficult to clean the dust . Especially when the high temperature gas is in a high humidity state , condensation will occur due to the cooling effect of the external gas . This will not only cause the trapped dust to scale on the surface of the filter bag , or even clogging , but also corrosion of the structural material , so that dust increased running resistance , direct impact on the normal operation of the bag filter . in view of this , ordinary filter must be further improved in function , to suit this special working conditions To prevent or reduce the phenomenon of dust paste bag and improve the service life and work efficiency of the filter material.

In recent years , our company has used reactive fluoride additives to post-treat various filter materials such as polyester, polypropylene, anti-static needle felt aramid needle felt, etc. , and achieved ideal water and oil repellent effect . Not only water and oil repellent The grade test meets the national standard and does not affect the appearance style and internal indicators of the original needle felt .

Water repellent and oil Mechanism: formulated with reactive fluoride impregnated filter auxiliaries fluid , the working fluid in the macromolecular structure with a fibrous filter certain groups reacted , forming macromolecular chain, changing the fiber with water, oil affinity can , the surface tension of the filter is reduced , to less than the surface tension of water and oil , in order to achieve the purpose of water repellent and oil . after the water- and oil-repellent treated by a variety of media , can form a molecular barrier around the fiber surface , may be and all kinds of material to prevent water buildup and oil penetration . compared with the general media , not only with a water repellent and oil properties, but also in terms of dust , also has anti-adhesion and easy peeling . the product is especially suited to China''s rainy south or Area and air humidity filter .


Production process: fiber opening --- combing --- stacking net --- acupuncture --- main acupuncture --- calendering --- impregnation water and oil proof working fluid --- baking --- heat Stereotype --- finished product


product name

Polyester water and oil resistant needle felt

PPS water and oil resistant needle felt

Fiber composition

Polyester staple fiber 2.2D/1.56D

PPS staple fiber 2.2D100 %

Base fabric

Polyester filament

PPS staple fiber

Gram

550g/m2

500g/m2

thickness

1.9mm

1.7mm

Water resistance level

Level 4

Air permeability m3/m2/min@12.7mmH2O

12

Warp strength (N/5cm)

1000

800

Weft strength (N/5cm)

1800

1300

Longitudinal elongation at break

35 %

35 %

Latitudinal elongation at break

45 %

45 %

Continuous working temperature

130 °C

170 °C

Instant working temperature

150 °C

232 °C

Surface treatment

High temperature hot pressing setting and hair

Singeing pressure light oil treatment water repellent

   
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