What about the key points for selecting flour mesh?...

1. Nylon filter cloth. Nylon is also called nylon, which is an aliphatic polyamide chemical fiber. Some of the advantages of nylon wear resistance are also very good. Nylon filter cloth can be used at temperatures up to 100 ° C and alkali resistance, second only to carbon tetrafluoride fibers. However, the nylon filter cloth is not resistant to acid. In the case of concentrated sulfuric acid and concentrated hydrochloric acid, it will chemically dissolve and dissolve; it is easily oxidized by an oxidizing agent, and when it encounters a high temperature or a high concentration of an oxidizing agent, the oxidation speed is fast. The nylon filter cloth can be dissolved in an organic solvent such as phenol or concentrated formic acid.

2, polyester filter cloth. Polyester is a polyester chemical fiber, known as polyethylene terephthalate. Polyester has good tensile strength, abrasion resistance and dimensional stability, and is especially suitable for drum vacuum filter and belt press filter. Its chemical stability is not very good, but it is resistant to oxidation by oxidants and reducing agents, and it is also good in acid resistance. However, it is not resistant to concentrated sulfuric acid and phosphoric acid. When high temperature and high concentration of alkali occur, chemical reactions occur to dissolve the polyester. The solvent of phenol is swollen with increasing concentration and temperature, and is hydrolyzed in humid air at a high temperature, so the use temperature is lower than that of other synthetic fibers, and is about 80 °C