A kind of emulsion and preparation method thereof
An emulsion, phase inversion technology, applied in coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of insufficient anti-corrosion performance, difficult deep grinding, poor corrosion resistance, etc., saving manpower and reducing pinholes , the effect of low price
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Embodiment 1
[0023] (1) Purification of humic acid: Take 30g of humic acid in a 350ml three-neck bottle equipped with a stirrer, add 200ml of absolute ethanol, heat the three-necked bottle in a water bath, start the stirrer (speed 200r / min ), until the liquid boils, take out and filter, and vacuum dry at 45°C for 12 hours to obtain the purified humic acid;
[0024] (2) Preparation of emulsion: Add 5g of water-based epoxy resin into a three-neck bottle equipped with a thermometer and a stirrer, stir for 15min (rotation speed: 200r / min), add 2g of purified humic acid, and add 3 drops of concentrated sulfuric acid As a reaction catalyst, the reaction was continued at 50°C for 3 hours, 50ml of water was slowly added, and an emulsion was obtained by phase inversion method.
Embodiment 2
[0026] (1) Purification of humic acid: Take 30g of humic acid in a 350ml three-neck bottle equipped with a stirrer, add 200ml of absolute ethanol, heat the three-necked bottle in a water bath, start the stirrer (speed 200r / min ), until the liquid boils, take out and filter, and vacuum dry at 45°C for 12 hours to obtain the purified humic acid;
[0027] (2) Preparation of emulsion: Add 5g of water-based epoxy resin into a three-neck bottle equipped with a thermometer and a stirrer, stir for 25min (rotation speed: 220r / min), add 3g of purified humic acid, and add 5 drops of concentrated sulfuric acid As a reaction catalyst, the reaction was continued at 50°C for 3 hours, 50ml of water was slowly added, and an emulsion was obtained by phase inversion method.
Embodiment 3
[0029] (1) Purification of humic acid: Take 30g of humic acid in a 350ml three-neck bottle equipped with a stirrer, add 200ml of absolute ethanol, heat the three-necked bottle in a water bath, start the stirrer (speed 200r / min ), until the liquid boils, take out and filter, and vacuum dry at 45°C for 12 hours to obtain the purified humic acid;
[0030] (2) Preparation of emulsion: Add 5g of water-based epoxy resin into a three-neck bottle equipped with a thermometer and a stirrer, stir for 20min (rotation speed: 250r / min), add 2g of purified humic acid, and add 5 drops of concentrated sulfuric acid As a reaction catalyst, the reaction was continued at 50°C for 3 hours, 50ml of water was slowly added, and an emulsion was obtained by phase inversion method.
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