Preparation method for filter screen filler, filter screen and applications
A technology of filter screen and filler, which is applied in the field of preparation of filter screen filler, which can solve the problems of fast equipment corrosion, high energy consumption, and lack of oil-water separation function, and achieve the effect of excellent corrosion resistance and long service life
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Embodiment 1
[0029] The carbon fiber filaments with a tensile force of 30T were made into fragments about 3 cm long, and the carbon fiber filaments were treated in concentrated nitric acid solution for 24 hours to form a layer containing hydroxyl groups. Fluoroorganosilane (5,5,6,6,7,7,8,8-octafluorodecylsilane, 250 mL of DMSO solution with a mass concentration of 5%) was mixed with small fragments of carbon fibers ( 100 g) was put into a flask, heated to 50° C., and stirred for 24 hours. Wash with DMSO and distilled water successively to remove excess organosilane. Use double-substituted long-chain organosilane (1,5-disilylpentane as crosslinking agent, 250mL of DMSO solution with a mass concentration of 0.15%) to carry out structural curing and shaping of the above-mentioned surface-modified carbon fiber, (structure as figure 1 shown). Its hydrophobic properties such as figure 2 As shown, a filter packing with a pore size of 2.0 μm can be prepared (such as image 3 shown).
[0030]...
Embodiment 2
[0032] The carbon fiber filaments with a tensile force of 30T were made into fragments about 3 cm long, and the carbon fiber filaments were treated in concentrated nitric acid solution for 24 hours to form a layer containing hydroxyl groups. Fluoroorganosilane (5,5,6,6,7,7,8,8-octafluorodecylsilane, 250 mL of DMSO solution with a mass concentration of 15%) and small fragments of carbon fibers ( 100 g) was put into a flask, heated to 50° C., and stirred for 24 hours. Wash with DMSO and distilled water successively to remove excess organosilane. Using disubstituted long-chain organosilane (1,5-disilylpentane as a crosslinking agent, 250 mL of DMSO solution with a mass concentration of 0.10%) was used to perform structural curing and shaping of the above-mentioned surface-modified carbon fibers. A filter packing with a pore size of 18.0 μm can be prepared.
[0033] like Figure 4 As shown, the filter filler is cut and filled into the double-layer carbon fiber mesh, and the two...
Embodiment 3
[0035] The carbon fiber filaments with a tensile force of 30T were made into fragments about 3 cm long, and the carbon fiber filaments were treated in concentrated nitric acid solution for 24 hours to form a layer containing hydroxyl groups. Fluoroorganosilane (5,5,6,6,7,7,8,8-octafluorodecylsilane, 250 mL of DMSO solution with a mass concentration of 15%) and small fragments of carbon fibers ( 100 g) was put into a flask, heated to 50° C., and stirred for 24 hours. Wash with DMSO and distilled water successively to remove excess organosilane. Using disubstituted long-chain organosilane (1,5-disilylpentane as a crosslinking agent, 250 mL of DMSO solution with a mass concentration of 0.05%) was used to perform structural curing and shaping of the above-mentioned surface-modified carbon fibers. A filter packing with a pore size of 78.0 μm can be prepared.
[0036] like Figure 4 As shown, the filter filler is cut and filled into the double-layer carbon fiber mesh, and the two e...
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