Method and equipment for preparing easily dispersed aluminum powder pigment through direct ball milling
A technology that is easy to disperse and aluminum powder is applied in separation methods, inorganic pigment treatment, chemical instruments and methods, etc. It can solve the problems of high energy consumption, high cost, cumbersome operation of aluminum powder pigments, etc., and achieve low energy consumption and prevent oxidation , The effect of streamlining equipment
Active Publication Date: 2020-05-19
曲靖华益兴新材料有限公司
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Problems solved by technology
[0006] The invention provides a method and equipment for preparing easily dispersible aluminum powder pigments by direct ball milling to solve the technical problems of cumbersome operation, high cost and high energy consumption in the prior art for preparing aluminum powder pigments
Method used
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Embodiment 1
[0046] 1) use figure 1 For the equipment shown, nitrogen gas is blown into the ball mill 1 with grinding balls added in advance, and aluminum powder pigments, acrylic resins, and ball milling aids with a particle size of 8-10 μm are added to the ball mill 1 for grinding, and the heat generated by the grinding makes the resin It becomes glassy and coated on the surface of aluminum powder pigment, wherein, the mass ratio of aluminum powder pigment: resin powder: ball milling aid is 1: 0.2: 0.05, and the mass ratio of grinding ball to the sum of the mass of aluminum powder pigment and resin 1:0.5, the glass transition temperature of acrylic resin is 60°C, adjust the flow rate and temperature of the cooling medium circulation system 16, so that the temperature of the hot zone of the ball mill 1 is 60-65°C, and the temperature of the cold zone is 25-50°C.
[0047] 2) The aluminum powder and pigment powder raised during the ball milling process is discharged from the discharge port ...
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Abstract
The invention discloses a method and equipment for preparing an easily dispersed aluminum powder pigment through direct ball milling. The method comprises the following steps of (1) blowing inert gasinto a ball mill, adding an aluminum powder pigment, resin and a ball-milling assistant into the ball mill for grinding, enabling the resin to become glassy through heat produced by grinding, and coating or bonding the surface of the aluminum powder pigment with the resin so as to form a resin coating; and (2) discharging the powder raised in the ball milling process from a discharge hole throughcontrolling the flow velocity of the inert gas, classifying and screening the powder for the first time so as to obtain heavier powder and an air flow containing lighter powder, returning the heavierpowder to the ball mill for re-grinding, classifying and separating the air flow containing the lighter powder for the second time, and obtaining the easily dispersed aluminum powder pigment. According to the method provided by the invention, a grinding process of the aluminum powder pigment is combined with a bonding process of the aluminum powder pigment and the resin, so that the process and the equipment are simplified, the cost is saved, the dispersibility of the prepared aluminum powder pigment in the resin is good, and an applied metal effect is good.
Description
technical field [0001] The present invention relates to the technical field of powder preparation, in particular to a method for preparing easily dispersible aluminum pigment by direct ball milling, and also relates to a device for implementing the method for preparing easily dispersible aluminum pigment by direct ball milling. Background technique [0002] Powder coating is a powdery substance composed of resins, pigments, fillers and additives, among which the resin component as the main film-forming substance can be a resin and its curing system, or a mixture of several resins. Metal powder coatings refer to various powder coatings that contain metallic pigments to give the coated board a metallic or pearlescent luster. There are many varieties of metallic pigments that can be used in powder coatings, such as: aluminum silver powder pigments, pearlescent pigments, copper gold powder pigments and other metallic pigments (such as nickel powder, stainless steel powder, etc.)...
Claims
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IPC IPC(8): B02C17/10B02C17/18B02C23/24B02C23/02B01D50/00C09C1/64C09C3/04C09C3/10C09C3/00
CPCB01D50/00B02C17/10B02C17/18B02C17/183B02C17/1875C09C1/646C09C3/006C09C3/041C09C3/10
Inventor 周掌叶梁晓斌曾孟金赵守元
Owner 曲靖华益兴新材料有限公司
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