Indoor powder coating
A technology for powder coatings and raw materials, applied in powder coatings, polyester coatings, epoxy resin coatings, etc., can solve problems such as insufficient utilization of red mud, achieve good environmental and economic benefits, high filling amount, and simple process operation. Effect
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[0042] The preparation method of described modified red mud powder comprises the following steps:
[0043] (1) Wash the red mud with water. After the red mud is tested to have a pH value of 8.2-9.6, it is filtered to obtain clean red mud. The clean red mud is dried until the water content is ≤ 5.2%;
[0044] (2) ultrafine grinding the clean red mud prepared in step (1), and sieving to obtain a clean red mud powder larger than 300 meshes;
[0045] (3) Add modifier I to the clean red mud powder prepared in step (2), said modifier I is composed of diethanolamide stearic acid monoglyceride, ethylene-bis(N-ethanesulfonic acid - sodium lauramide), the addition of the modifier I is 3.4-4.6% of the clean red mud powder mass, the diethanolamide monoglyceride stearate, ethylene-bis(N-ethylene The mass ratio of sulfonic acid-dodecylamide) sodium is 6.3-10.8:3.4-7.6, the temperature is controlled at 56-65°C, and the mixture is stirred at a speed of 800-1000r / min for 20-30min to obtain mi...
Embodiment 1
[0080] A preparation method of modified red mud powder, comprising the following steps:
[0081] (1) The red mud discarded in the alumina production process is washed with water to remove the Na in the red mud 2 O and other water-soluble substances are washed away, and the washed red mud is tested to have a pH value of 8.9, then press-filtered to become clean red mud, and the clean red mud is dried to a water content of 5%;
[0082] (2) ultrafine grinding the clean red mud prepared in step (1), and sieving to obtain a clean red mud powder larger than 300 meshes;
[0083] (3) Add modifier I to the clean red mud powder prepared in step (2), said modifier I is composed of diethanolamide stearic acid monoglyceride, ethylene-bis(N-ethanesulfonic acid - lauramide) sodium composition, the addition of the modifier I is 4.2% of the clean red mud powder quality, the diethanolamide monoglyceride stearate, ethylene-bis(N-ethanesulfonic acid - the mass ratio of sodium dodecylamide) is 9....
Embodiment 2
[0104] A preparation method of modified red mud powder, comprising the following steps:
[0105] (1) The red mud discarded in the alumina production process is washed with water to remove the Na in the red mud 2 O and other water-soluble substances are washed away, and the washed red mud is tested to have a pH value of 8.5, then press-filtered to become clean red mud, and the clean red mud is dried to a water content of 4.9%;
[0106] (2) ultrafine grinding the clean red mud prepared in step (1), and sieving to obtain a clean red mud powder larger than 300 meshes;
[0107] (3) Add modifier I to the clean red mud powder prepared in step (2), said modifier I is composed of diethanolamide stearic acid monoglyceride, ethylene-bis(N-ethanesulfonic acid - lauramide) sodium composition, the addition of the modifier I is 3.8% of the clean red mud powder quality, the diethanolamide monoglyceride stearate, ethylene-bis(N-ethanesulfonic acid - the mass ratio of sodium dodecylamide) is ...
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Abstract
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