Preparation method for water-repellent oil-repellent superhydrophobic fabric surface
A water-repellent, oil-repellent, super-repellent technology, applied in textiles, papermaking, fiber treatment, etc., can solve the problems of complex operation of water-repellent, oil-repellent and super-repellent surfaces, environmental pollution, etc., achieve good super-hydrophobicity, and simple and easy process The effect of mild operation and reaction conditions
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[0032] The invention provides a method for preparing the surface of a water-repellent and oil-repellent super-repellent fabric, comprising the following steps:
[0033] (1) weigh cotton fabric, prepare cotton cellulose macromolecular initiator under the effect of initiator, catalyzer;
[0034] (2) Graft monomer GMA on the cotton cellulose macroinitiator of above-mentioned preparation, reaction system vacuumizes nitrogen, obtains the cotton cellulose of grafting GMA, the cotton cellulose of the grafting GMA of gained is soaked in acid In solution, the epoxy groups on it are hydrolyzed to form a hydroxyl-rich cellulose surface; and
[0035] (3) The cotton cellulose grafted with GMA on the hydroxyl-rich cellulose surface prepared above undergoes an acylation reaction with a low surface energy monomer to obtain a water- and oil-repellent super-repellent surface.
[0036]In order to make the above objects, features and advantages of the present invention more comprehensible, the p...
Embodiment 1
[0053] In this embodiment, the water-repellent and oil-repellent super-repellent surface is prepared according to the following steps:
[0054] The first step, the preparation of cotton cellulose macromolecular initiator
[0055] The pretreatment of cotton fabrics in the experiment included soaping, ethanol ultrasonic cleaning for 20 minutes, THF ultrasonic cleaning for 10 minutes, and low temperature drying and cooling for later use. Weigh about 1g of cotton fabric, calculate the amount of each reagent according to the mass ratio m (cotton: 2-bromoisobutyryl bromide: DMAP: triethylamine) = 1:2:0.5:0.9, add 50ml THF to the round bottom flask , then add DMAP and triethylamine, cool the round-bottomed flask to 10°C in an ice bath, add the initiator 2-bromoisobutyryl bromide dropwise, then add the cotton fabric, react for 1 hour and then heat up to 30°C The reaction was continued for 24h, and the whole reaction was carried out under the stirring of the magnetic rotor. After the...
Embodiment 2
[0061] In this embodiment, the water-repellent and oil-repellent super-repellent surface is prepared according to the following steps:
[0062] The first step, the preparation of cotton cellulose macromolecular initiator
[0063] The pretreatment of cotton fabrics in the experiment included soaping, ethanol ultrasonic cleaning for 20 minutes, THF ultrasonic cleaning for 10 minutes, and low temperature drying and cooling for later use. Weigh about 1g of cotton fabric, calculate the amount of each reagent according to the mass ratio m (cotton: 2-bromoisobutyryl bromide: DMAP: triethylamine) = 1:2:0.5:0.9, add 50mlTHF to the round bottom flask, Then add DMAP and triethylamine, cool the round-bottomed flask to 10°C in an ice bath, add the initiator 2-bromoisobutyryl bromide dropwise, then add the cotton fabric, and heat up to 30°C after reacting for 1 hour to continue The reaction was carried out for 24 hours, and the whole reaction was carried out under the stirring of the magne...
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