A nanocomposite fluorine-free fabric waterproof finishing agent and its preparation method and application
A nano-composite, waterproof finishing technology, applied in textiles and papermaking, fiber treatment, plant fibers, etc., can solve problems such as poor hand feeling, affecting fabric comfort, fabric roughness, etc., achieve good hand feel and softness, durable and stable water repellency Performance, long-lasting effect of excellent water repellency
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Embodiment 1
[0038]Dissolve 10g of cationic silica hydrosol with an average particle size of 30nm and a mass content of 25%, 2g of octadecyltrimethylammonium chloride, and 1g of AEO-9 in 60g of deionized water under stirring to obtain a premixed Emulsion, and then a mixed solution of 10 g of α, ω-dihydroxypolydimethylsiloxane with a molecular chain of 2000, 12 g of n-octyltriethoxysilane and 5 g of oxidized polyethylene wax with a molecular weight of 1000 under stirring conditions Gradually add to the above pre-mixed emulsion, heat up to 90°C, mix and stir for 30 minutes, then homogenize for 10 minutes at 90°C with a high-shear disperser, cool down to room temperature to obtain an organic silicon nanocomposite fluorine-free waterproof with an average particle size of 120nm agent dispersion with a solid content of 32.5%.
Embodiment 2
[0040] Dissolve 10g of cationic silica hydrosol with an average particle size of 20nm and a mass content of 20%, 3g of octadecyltrimethylammonium chloride, and 1g of AEO-7 in 65g of deionized water under stirring to obtain a premixed Emulsion, and then a mixed solution of 10 g of α, ω-dihydroxypolydimethylsiloxane with a molecular chain of 5000, 10 g of n-octyl triethoxysilane and 5 g of oxidized polyethylene wax with a molecular weight of 2000 under stirring conditions Gradually added to the above premixed emulsion, heated to 95°C, mixed and stirred for 30 minutes, then homogenized by a high-shear disperser at 95°C for 10 minutes, cooled to room temperature to obtain a silicone nanocomposite inorganic compound with an average particle size of 100nm Fluorine water repellent dispersion with a solid content of 31%.
Embodiment 3
[0042] Dissolve 3g of cationic silica hydrosol with an average particle size of 20nm and a mass content of 20%, 2g of octadecyltrimethylammonium chloride, and 2g of AEO-5 in 62g of deionized water under stirring to obtain a premixed Emulsion, and then a mixed solution of 15 g of α, ω-dihydroxypolydimethylsiloxane with a molecular chain of 10000, 5 g of n-octyltriethoxysilane and 8 g of polyethylene wax with a molecular weight of 1600 was gradually mixed under stirring conditions. Add it to the above pre-mixed emulsion, raise the temperature to 90°C, mix and stir for 30 minutes, then homogenize it through a high-shear disperser at 90°C for 10 minutes, and cool down to room temperature to obtain a silicone nanocomposite fluorine-free waterproof with an average particle size of 80nm agent dispersion with a solid content of 32.6%.
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