A kind of preparation method of hydrophobically modified melamine sponge
A technology of melamine sponge and polycyanamide sponge, which is applied in the direction of general water supply saving, chemical instruments and methods, and other chemical processes, can solve the problems of high cost, limited application of graphene-based oil-absorbing materials, cumbersome and complicated preparation process, etc. Achieve the effects of low production cost, good recycling performance, and simple preparation process
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Embodiment 1
[0062] A. Preparation of hydrophobically modified solution
[0063] 0.1 g of graphite particles (with a particle size of 325 mesh) were added to 5 g of methyl acrylate, and dispersed by ultrasonic, the ultrasonic power was 300 W, and the ultrasonic time was 5 min.
[0064] Then 15g of water was added, followed by 0.2mg of stearyldimethylbenzylammonium chloride (surfactant), 0.05g of azobisisobutyronitrile (initiator) and 0.06g of divinylbenzene ( DVB, cross-linking agent), and blended by a homogenizer for 30 s to obtain an oil (polymethyl acrylate phase) water-in-water (water phase) inverse Pickering emulsion in which graphite is dispersed in flakes.
[0065] B, the preparation of hydrophobically modified melamine sponge
[0066] The melamine sponge was repeatedly rinsed with deionized water for 3 times, and then dried in an oven at 80 °C for 24 h to complete the pretreatment.
[0067] The pretreated melamine sponge is impregnated with the hydrophobically modified solution p...
Embodiment 2
[0073] A. Preparation of hydrophobically modified solution
[0074] 0.15g of graphite particles (with a particle size of 10000 mesh) were added to 5g of butyl acrylate, and dispersed by ultrasonic, the ultrasonic power was 300W, and the ultrasonic time was 5min.
[0075] Then 16 g of water were added, followed by 0.1 mg of sorbitan monolaurate-80 (surfactant), 0.06 g of azobisisobutyronitrile (initiator) and 0.1 g of ethylene glycol bismethyl Acrylate (EGDMA, cross-linking agent) was blended by a homogenizer for 30s to obtain an oil (polybutyl acrylate phase)-in-water (water phase) inverse Pickering emulsion in which graphite was dispersed in flakes.
[0076] B, the preparation of hydrophobically modified melamine sponge
[0077] The melamine sponge was repeatedly rinsed with deionized water for 3 times, and then dried in an oven at 80 °C for 24 h to complete the pretreatment.
[0078] The pretreated melamine sponge is impregnated with the hydrophobic modification solution p...
Embodiment 3
[0084] A. Preparation of hydrophobically modified solution
[0085] 0.1 g of graphite particles (with a particle size of 10,000 mesh) were added to 5 g of isoprene, and dispersed by ultrasonic, the ultrasonic power was 300 W, and the ultrasonic time was 5 min.
[0086] Then 17 g of water were added, followed by 0.2 mg of sodium lauryl sulfate (surfactant), 0.07 g of azobisisoheptanenitrile (initiator) and 0.15 g of N,N-methylenebisacryloyl Esteramine (MBA, cross-linking agent), blended by mechanical stirring at a speed of 500r / min for 10min to obtain a water-in-oil (aqueous phase) type inverse skin with graphite dispersed in flakes Klein lotion.
[0087] B, the preparation of hydrophobically modified melamine sponge
[0088] The melamine sponge was repeatedly rinsed with deionized water for 5 times, and then dried in an oven at 80 °C for 24 h to complete the pretreatment.
[0089] The pretreated melamine sponge is impregnated with the hydrophobically modified solution prepa...
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