Preparation method of high-precision coating filter material
A production method and high-precision technology, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problems of easy filtration, poor folding resistance and wear resistance of glass fibers, and formation of protective films, so as to improve the filtration efficiency. Accuracy, extended service life, and improved corrosion resistance effects
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[0029] Example one
[0030] The manufacturing method of the high-precision coated filter material of the present invention includes the following steps:
[0031] 1. The woven 750g / ㎡ glass fiber filter cloth is subjected to thermal cleaning treatment, and various additives on the surface of the fabric are removed at high temperature to facilitate subsequent processing; the temperature of thermal cleaning is 450℃~500℃.
[0032] 2. The cleaned filter cloth is pre-impregnated, the immersion speed is 5m / min, and the treatment formula is as follows:
[0033]
[0034] 3. The pre-treated filter cloth enters the drying, drying and heat setting device for leveling treatment. The drying temperature is 160℃; the drying temperature is 220℃; the heat setting temperature is 290℃, and the drying, drying, and heat setting speed is 2m / min. The drying area can take away most of the moisture contained in the filter material with hot air. The high temperature in the drying and setting zone enables the P...
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[0038] Example two
[0039] The manufacturing method of the high-precision coated filter material of the present invention includes the following steps:
[0040] 1. The woven 500g / ㎡ glass fiber filter cloth is subjected to thermal cleaning treatment, and various additives on the surface of the fabric are removed at high temperature to facilitate subsequent processing; the temperature of thermal cleaning is 450℃~500℃.
[0041] 2. The cleaned filter cloth is pre-impregnated, the impregnation speed is 6m / min, and the treatment formula is as follows:
[0042]
[0043]
[0044] 3. The pre-treated filter cloth enters the drying, drying and heat setting device for leveling treatment. The drying temperature is 165°C; the drying temperature is 225°C; the heat setting temperature is 320°C, and the drying, drying, and heat setting speed is 3m / min. The drying area can take away most of the moisture contained in the filter material with hot air. The high temperature in the drying and setting zon...
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