Preparation method of functionalized photocatalyst fibers
A functional and photocatalyst technology, applied in the field of fiber manufacturing, can solve the problems of photocatalytic purification efficiency, photocatalytic performance is difficult to be widely applied, etc., and achieve the effect of industrialization promotion, powerful function and complex process
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[0013] The preparation method (method for short) of the functionalized photocatalyst fiber designed by the present invention adopts the following technology:
[0014] (1) Preparation of functionalized nano-TiO2 powder
[0015] 5.0g of ferric chloride and 3.0g of graphene oxide were added to 1000ml of nano-TiO2 hydrosol, stirred at high speed for 2h at room temperature, then cooled, filtered and baked at high temperature to obtain surface-coated iron and graphene The functionalized nano-TiO2 powder; the specifications of the graphene oxide are, the average thickness is 1.5nm, and the average bulk density is 0.68g / m 3 ; The hydrosol is required to be a broad spectrum response type with an average particle size of 2-3 nm;
[0016] (2) Preparation of functionalized PET masterbatch containing nano-TiO2
[0017] Put the mass fraction of 15-45% functionalized nano-TiO2 powder, 1.0-2.0% polyethylene dispersant and 53-84% PET chips into a high-speed mixer to mix uniformly, and then u...
Example Embodiment
[0025] Example 1
[0026] A functionalized photocatalyst fiber was prepared.
[0027] (1) Preparation of functionalized nano-TiO2 powder
[0028] 5.0g ferric chloride and 3.0g graphene oxide (average thickness: 1.5nm, average bulk density: 0.68g / m 3 ) into 1000ml of nano-TiO2 hydrosol (average mass content of nano-TiO2 particles with an average particle size of 2-3nm: 2.50%), and stirred at high speed for 2h at room temperature, then cooled, filtered and baked at 120°C Then, the functionalized nano-TiO2 powder coated with iron and graphene on the surface is obtained.
[0029] (2) Preparation of functionalized PET masterbatch:
[0030]Put 15% mass fraction of functionalized nano-TiO2 powder, 1.0% polyethylene dispersant (relative molecular weight 2000) and 84% PET chips into a high-speed mixer to mix uniformly, and then use an extruder at 180 ° C to carry out Melt, mix and extrude, cool in a water bath and use a pelletizer for pelletizing, and finally obtain functionalized ...
Example Embodiment
[0034] Example 2
[0035] A functionalized photocatalyst fiber was prepared.
[0036] (1) Preparation of functionalized nano-TiO2 powder
[0037] The steps are the same as in Example 1.
[0038] (2) Preparation of functionalized PET masterbatch
[0039] Put 30% functionalized nano-TiO2 powder, 1.5% polyethylene dispersant (relative molecular weight 2000) and 68.5% PET chips into a high-speed mixer to mix uniformly, and then use an extruder to melt at 200 °C Mixed and extruded, cooled in a water bath, and pelletized by a pelletizer, and finally dried in a vacuum to obtain functionalized PET masterbatches.
[0040] (3) Spinning of skin-core functionalized photocatalyst fibers
[0041] First, the mass fraction of 35% nano-TiO 2 The functionalized PET masterbatch and 65% PET chips were vacuum-dried for 1 h, and then mixed and melt-spun at 280 °C by a twin-screw composite spinning machine equipped with a skin-core composite spinning assembly, and then passed through a stretchi...
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