CN103342906A - Copper powder pigment and manufacturing method thereof by dry milling - Google Patents
Copper powder pigment and manufacturing method thereof by dry milling Download PDFInfo
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- CN103342906A CN103342906A CN2013102801438A CN201310280143A CN103342906A CN 103342906 A CN103342906 A CN 103342906A CN 2013102801438 A CN2013102801438 A CN 2013102801438A CN 201310280143 A CN201310280143 A CN 201310280143A CN 103342906 A CN103342906 A CN 103342906A
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Abstract
The invention provides a copper powder pigment which is prepared by mixing the following components in parts by weight: 95-98% of copper powder, 1.5-4% of stearic acid, 0.4-0.8% of coupling agent and 0.1-0.2% of dispersing agent. The manufacturing method of the copper powder pigment by dry milling comprises the following steps: ball milling, graded screening, synthesis of primary finished product, and synthesis of secondary finished product. The high-polymer coupling agent with coordination group is used as a protective agent, and the stearic acid has the effect of assisting milling, thereby integrally changing the milling mode; the graded uniform-speed impact-free grinding, three-stage screening and two-stage discharging are utilized to enhance the radius-thickness ratio and particle uniformity of the product; and the dual oxidation-resistant configuration effectively solves the problem of high oxidation tendency of the copper powder surface in the working process, thereby obtaining the flake copper powder pigment with strong oxidation resistance and enduring, bright and adjustable color.
Description
Technical field
The present invention relates to the manufacturing technology field of solid metal powder pigment, especially relate to a kind of copper powder pigment and dry grinding manufacture method thereof.
Background technology
Metallic pigment are to process a class pigment that makes by metal-powder, metal oxide by proper method, have metalluster, and it is widely used in coatings industry and makes fancy paint.Main kind has: aluminium powder, copper powder, zinc powder, lead powder, titanium valve and Stainless Steel Powder; Wherein make the golden powder to bronze-colored gloss of tool with the alloy of metallic copper or its zinc, tin etc.The zinc powder that conventional copper powder manufacturers provides contains different-grain diameter, all not to the further screening of this blended zinc powder end, so that be unfavorable for that in use the user optionally adds according to purposes, namely can't satisfy the bright and new of coating, smooth smooth effect, it is anti-oxidant that present screening production unit is still waiting to solve the particulate of metal-powder in the industry, the control of micro mist size-grade distribution, related production technical barriers such as the control of powder micro-shape and transformation, therefore be necessary to provide a kind of from prescription, processing parameter is to the manufacture method of proprietary production line, to satisfy the constantly demand of development of industry.
Summary of the invention
The objective of the invention is to solve the problems of the prior art, and a kind of have epigranular and stable copper powder pigment and the dry grinding manufacture method thereof of good metalluster, water surface opacifying power and oxidation-resistance are provided.
The technical solution adopted in the present invention is such: a kind of copper powder pigment is mixed by following component and weight proportion: copper powder: 95%～98%; Stearic acid: 1.5%～4%; Coupling agent: 0.4%～0.8%; Dispersion agent: 0.1%～0.2%.
Preferably, a kind of copper powder pigment is mixed by following component and weight proportion: copper powder: 95%; Stearic acid: 4%; Coupling agent: 0.8%; Dispersion agent: 0.2%.
Preferably, a kind of copper powder pigment is mixed by following component and weight proportion: copper powder: 98%; Stearic acid: 1.5%; Coupling agent: 0.4%; Dispersion agent: 0.1%.
Preferably, a kind of copper powder pigment is mixed by following component and weight proportion: copper powder: 96%; Stearic acid: 3.2%; Coupling agent: 0.6%; Dispersion agent: 0.2%.
Preferably, described coupling agent adopts phthalate ester coupling agent.
The dry grinding manufacture method of copper powder pigment may further comprise the steps:
(1) ball milling: in horizontal ball mill, be built-in with a plurality of ball milling, copper powder is put into the raw material hopper, and to allocate the weight percent that accounts for copper powder into be 1.5%～2% coupling agent, by feeder control weight feed, and be blown in the horizontal ball mill by the copper powder of blower fan after will be quantitatively, keeping the temperature in the horizontal ball mill is 40～70 ℃, is 20～80r/min in conjunction with Frequency Converter Control horizontal ball mill rotating speed; Carry out ball milling work, controlling per 30 minutes powder outlet quantity is 1.5kg～2.5 kg, thereby obtains the copper powder of scroll sheet;
(2) gradation sizing: with the copper powder after grinding in the step (1), after being blown into first grading machine screening successively by blower fan, the copper powder that grain is big carries the return of serve grinding machine to continue to grind, the copper powder that granularity is little is transported in second grading machine, after second grading machine rescreens branch, obtain one-level copper powder and secondary copper powder; Wherein the one-level copper powder is transported to first batch hopper, and the secondary copper powder is transported to second batch hopper through dust-precipitator; The copper powder size that described granularity is big is to be not less than 1.5 times of finished product average particle diameter, the copper powder size that granularity is little is 1.5 times less than finished product average particle diameter, described one-level copper powder size is to be not less than 1.2 times of finished product average particle diameter, and the secondary copper powder size is 1.2 times less than finished product average particle diameter;
(3) first step finished product is synthetic: should by sensor meter double infection with the one-level copper powder in first batch hopper in the step (2), and through the self-feeder of first batch hopper, accurately quantitatively be transported in the first polishing ball mill, in addition first join the mixed powder that stearic acid and dispersion agent are housed in the powder bucket, wherein the ratio of the mixed weight between stearic acid and the dispersion agent is: 1:(0.06～0.08); And by first feeder of joining the powder bucket, measure through first batch hopper, thereby add the weight percent account for the one-level copper powder and be 1.5%～3% mixed powder, be transported in the first polishing ball mill, keeping the temperature in the first polishing ball mill is 20～50 ℃, is 10～20r/min in conjunction with the Frequency Converter Control first polishing drum's speed of rotation; Carry out polishing work, controlling powder outlet quantity hourly is 4kg～12kg, thereby discharging obtains into the one-level finished product copper powder pigment of flat shape or scroll sheet;
(4) second stage finished product is synthetic: should by sensor meter double infection with the secondary copper powder in second batch hopper in the step (2), and through the self-feeder of second batch hopper, accurately quantitatively be transported in the second polishing ball mill, in addition second join the mixed powder that stearic acid and dispersion agent are housed in the powder bucket, wherein the ratio of the mixed weight between stearic acid and the dispersion agent is: 1:(0.06～0.08); And by second feeder of joining the powder bucket, measure through second batch hopper, thereby add the weight percent account for the secondary copper powder and be 1.5%～3% mixed powder, be transported in the second polishing ball mill, keeping the temperature in the second polishing ball mill is 20～50 ℃, is 10～20r/min in conjunction with the Frequency Converter Control first polishing drum's speed of rotation; Carry out polishing work, controlling powder outlet quantity hourly is 4kg～12 kg, thereby discharging obtains into the secondary finished product copper powder pigment of flat shape or scroll sheet.
Preferably, the specification of described finished product average particle diameter is 60um, 48um, 36um, 27um, 20um, 15um, 11um, 8um, 6um, 5um, 4um, 3um any specification wherein.
Preferably, of the ball milling in described horizontal ball mill employing diameter is granulated glass sphere or zirconium oxide bead or the fluorine carbon steel pearl of 2mm～9mm; It is granulated glass sphere or zirconium oxide bead or the fluorine carbon steel pearl of 1mm～3mm that ball milling in the described first polishing ball mill and the second polishing ball mill adopts diameter.
Preferably, infrared measurement of temperature is adopted in temperature control on ball mill in described step (1), (3), (4), the first polishing ball mill and the second polishing ball mill, and in conjunction with temperature alarming device, when temperature surpasses the warning temperature value of setting, after 2～3 minutes, production system will be out of service automatically.
Preferably, described blower fan is circumscribed with anemoscope and air compressor machine, and anemoscope auto-control compressor operation is for blower fan provides required constant wind speed.
By adopting the aforementioned techniques scheme; the invention has the beneficial effects as follows: adopt to have the polymer coupler of coordinating group as protective material; stearic acid plays grinding aid effectiveness; adopt dual anti-oxidant configuration; the whole mode that grinds that changes; use classification at the uniform velocity not have impact grinding; three grades of screenings; the two-stage discharging; radius-thickness ratio and the uniform particles of product have been improved; effectively solve surperficial easy-oxidizing hard topic in the copper powder course of processing, thereby obtain grain size category distribution, strong, fast in colour, the bright-coloured adjustable flake copper pigment of oxidation-resistance.
Embodiment
Describe the present invention particularly with embodiment below, scope of the present invention is not subjected to the restriction of embodiment.
A kind of copper powder pigment of the present invention can be mixed by following component and weight proportion, and its corresponding embodiment 1-3 proportioning is as follows:
| ? | Copper powder | Stearic acid | Coupling agent | Dispersion agent |
| Embodiment 1 | 95% | 4% | 0.8% | 0.2% |
| Embodiment 2 | 98% | 1.5% | 0.4% | 0.1% |
| Embodiment 3 | 96% | 3.2% | 0.6% | 0.2% |
Wherein, preferred forms adopts phthalate ester coupling agent with coupling agent.
The dry grinding manufacture method of copper powder pigment may further comprise the steps:
(1) ball milling: in horizontal ball mill, adopting diameter is that the glass sphere of 1mm-9mm or zirconium oxide bead or fluorine carbon steel pearl are as ball milling, copper powder is put into the raw material hopper, and to allocate the weight percent that accounts for copper powder into be 1.5%～2% coupling agent, by feeder control weight feed, and the copper powder after inciting somebody to action quantitatively by blower fan is blown in the ball mill, adopt infrared measurement of temperature, keeping the temperature in the ball mill is 40～70 ℃, and in conjunction with temperature alarming device, when temperature surpasses the warning temperature value of setting, after 2～3 minutes, production system will be out of service automatically, and production safety is reliable, be 20～80r/min in conjunction with the Frequency Converter Control drum's speed of rotation; Carry out ball milling work, blower fan is circumscribed with anemoscope and air compressor machine in addition, and anemoscope auto-control compressor operation is for blower fan provides required constant wind speed, be 1.5kg～2.5 kg thereby effectively control per 30 minutes powder outlet quantity, thereby obtain the copper powder of scroll sheet;
(2) gradation sizing: with the copper powder after grinding in the step (1), after being blown into first grading machine screening successively by blower fan, the copper powder that granularity is big carries the return of serve grinding machine to continue to grind, the copper powder that granularity is little is transported in second grading machine, after second grading machine rescreens branch, obtain one-level copper powder and secondary copper powder; Wherein the one-level copper powder is transported to first batch hopper, and the secondary copper powder is transported to second batch hopper through dust-precipitator; The copper powder size that described granularity is big is to be not less than 1.5 times of finished product average particle diameter, the copper powder size that granularity is little is 1.5 times less than finished product average particle diameter, described one-level copper powder size is to be not less than 1.2 times of finished product average particle diameter, and the secondary copper powder size is 1.2 times less than finished product average particle diameter.
According to the required specification of selecting finished product average particle diameter for use of the condition of production, the finished product average particle diameter of ordinary production is 60um, 48um, 36um, 27um, 20um, 15um, 11um, 8um, 6um, 5um, 4um, 3um, more than several specifications, thereby make things convenient for manufacturer according to the corresponding outfit of s own situation.
(3) first step finished product is synthetic: the one-level copper powder in first batch hopper in the step (2) is heavy by the sensor meter, and in the feeder of first batch hopper is transported to the first polishing ball mill, in addition first join the mixed powder that stearic acid and dispersion agent are housed in the powder bucket, wherein the ratio of the mixed weight between stearic acid and the dispersion agent is: 1:0.07; And by first feeder of joining the powder bucket, measure through first batch hopper, thereby add the weight percent account for the one-level copper powder and be 1%～2% mixed powder, be transported in the first polishing ball mill, keeping the temperature in the first polishing ball mill is 20～50 ℃, is 10～20r/min in conjunction with the Frequency Converter Control first polishing drum's speed of rotation; Carry out polishing work, controlling powder outlet quantity hourly is 4kg～12 kg, thereby discharging obtains into the one-level finished product copper powder pigment of flat shape or scroll sheet;
(4) second stage finished product is synthetic: the secondary copper powder in second batch hopper in the step (2) is heavy by the sensor meter, and in the feeder of second batch hopper is transported to the second polishing ball mill, in addition second join the mixed powder that stearic acid and dispersion agent are housed in the powder bucket, wherein the ratio of the mixed weight between stearic acid and the dispersion agent is: 1:0.07; And by second feeder of joining the powder bucket, measure through second batch hopper, thereby add the weight percent account for the secondary copper powder and be 1%～2% mixed powder, be transported in the second polishing ball mill, keeping the temperature in the second polishing ball mill is 20～50 ℃, is 10～20r/min in conjunction with the Frequency Converter Control first polishing drum's speed of rotation; Carry out polishing work, controlling powder outlet quantity hourly is 4kg～12 kg, thereby discharging obtains into the secondary finished product copper powder pigment of flat shape or scroll sheet;
Adopt copper powder pigment of the present invention and dry method manufacture method, use ball milling-gradation sizing-classification ball milling polishing, thereby produce multistage finished product copper powder pigment, after also can carrying out two-shipper ball milling-gradation sizing-classification ball milling polishing or carrying out ball milling polishing-gradation sizing-two-shipper ball milling in addition, corresponding structure production is arranged in proper order, and can be according to customer demand, carry out rotating speed, the parameter specification of grading machine is adjusted, it is convenient that equipment is adjusted the cloth order, the practicality height, thereby realize that pigment powder reaches regular shape, fine size and be difficult for oxidation, photosensitivity is strong, the effect that opacifying power is big, integral production process Environmental Safety is reliable.
Above-described, only be preferred embodiment of the present invention, can not limit scope of the invention process, every equalization of doing according to the present patent application claim changes and decorates, and all should still belong in the scope that the present invention contains.
Claims (10)
1. a copper powder pigment is characterized in that, is mixed by following component and weight proportion: copper powder: 95%～98%; Stearic acid: 1.5%～4%; Coupling agent: 0.4%～0.8%; Dispersion agent: 0.1%～0.2%.
2. copper powder pigment according to claim 1 is characterized in that, is mixed by following component and weight proportion: copper powder: 95%; Stearic acid: 4%; Coupling agent: 0.8%; Dispersion agent: 0.2%.
3. copper powder pigment according to claim 1 is characterized in that, is mixed by following component and weight proportion: copper powder: 98%; Stearic acid: 1.5%; Coupling agent: 0.4%; Dispersion agent: 0.1%.
4. copper powder pigment according to claim 1 is characterized in that, is mixed by following component and weight proportion: copper powder: 96%; Stearic acid: 3.2%; Coupling agent: 0.6%; Dispersion agent: 0.2%.
5. according to the arbitrary described copper powder pigment of claim 1 to 4, it is characterized in that: described coupling agent adopts phthalate ester coupling agent.
6. the dry grinding manufacture method of copper powder pigment according to claim 1 is characterized in that: may further comprise the steps:
(1) ball milling: in horizontal ball mill, be built-in with a plurality of ball milling, copper powder is put into the raw material hopper, and to allocate the weight percent that accounts for copper powder into be 1.5%～2% coupling agent, by feeder control weight feed, and be blown in the horizontal ball mill by the copper powder of blower fan after will be quantitatively, keeping the temperature in the horizontal ball mill is 40～70 ℃, is 20～80r/min in conjunction with Frequency Converter Control horizontal ball mill rotating speed; Carry out ball milling work, controlling per 30 minutes powder outlet quantity is 1.5kg～2.5 kg, thereby obtains the copper powder of scroll sheet;
(2) gradation sizing: with the copper powder after grinding in the step (1), after being blown into first grading machine screening successively by blower fan, the copper powder that granularity is big carries the return of serve grinding machine to continue to grind, the copper powder that granularity is little is transported in second grading machine, after second grading machine rescreens branch, obtain one-level copper powder and secondary copper powder; Wherein the one-level copper powder is transported to first batch hopper, and the secondary copper powder is transported to second batch hopper through dust-precipitator; The copper powder size that described granularity is big is to be not less than 1.5 times of finished product average particle diameter, the copper powder size that granularity is little is 1.5 times less than finished product average particle diameter, described one-level copper powder size is to be not less than 1.2 times of finished product average particle diameter, and the secondary copper powder size is 1.2 times less than finished product average particle diameter;
(3) first step finished product is synthetic: should by sensor meter double infection with the one-level copper powder in first batch hopper in the step (2), and through the self-feeder of first batch hopper, accurately quantitatively be transported in the first polishing ball mill, in addition first join the mixed powder that stearic acid and dispersion agent are housed in the powder bucket, wherein the ratio of the mixed weight between stearic acid and the dispersion agent is: 1:(0.06～0.08); And by first feeder of joining the powder bucket, measure through first batch hopper, thereby add the weight percent account for the one-level copper powder and be 1.5%～3% mixed powder, be transported in the first polishing ball mill, keeping the temperature in the first polishing ball mill is 20～50 ℃, is 10～20r/min in conjunction with the Frequency Converter Control first polishing drum's speed of rotation; Carry out polishing work, controlling powder outlet quantity hourly is 4kg～12kg, thereby discharging obtains into the one-level finished product copper powder pigment of flat shape or scroll sheet;
(4) second stage finished product is synthetic: should by sensor meter double infection with the secondary copper powder in second batch hopper in the step (2), and through the self-feeder of second batch hopper, accurately quantitatively be transported in the second polishing ball mill, in addition second join the mixed powder that stearic acid and dispersion agent are housed in the powder bucket, wherein the ratio of the mixed weight between stearic acid and the dispersion agent is: 1:(0.06～0.08); And by second feeder of joining the powder bucket, measure through second batch hopper, thereby add the weight percent account for the secondary copper powder and be 1.5%～3% mixed powder, be transported in the second polishing ball mill, keeping the temperature in the second polishing ball mill is 20～50 ℃, is 10～20r/min in conjunction with the Frequency Converter Control first polishing drum's speed of rotation; Carry out polishing work, controlling powder outlet quantity hourly is 4kg～12 kg, thereby discharging obtains into the secondary finished product copper powder pigment of flat shape or scroll sheet.
7. the dry grinding manufacture method of copper powder pigment according to claim 6, it is characterized in that: the specification of described finished product average particle diameter is 60um, 48um, 36um, 27um, 20um, 15um, 11um, 8um, 6um, 5um, 4um, 3um any specification wherein.
8. the dry grinding manufacture method of copper powder pigment according to claim 6 is characterized in that: it is granulated glass sphere or zirconium oxide bead or the fluorine carbon steel pearl of 2mm～9mm that ball milling in the described horizontal ball mill adopts diameter; It is granulated glass sphere or zirconium oxide bead or the fluorine carbon steel pearl of 1mm～3mm that ball milling in the described first polishing ball mill and the second polishing ball mill adopts diameter.
9. the dry grinding manufacture method of copper powder pigment according to claim 6, it is characterized in that: infrared measurement of temperature is adopted in the temperature control on the ball mill in described step (1), (3), (4), the first polishing ball mill and the second polishing ball mill, and in conjunction with temperature alarming device, when temperature surpasses the warning temperature value of setting, after 2～3 minutes, production system will be out of service automatically.
10. the dry grinding manufacture method of copper powder pigment according to claim 6, it is characterized in that: described blower fan is circumscribed with anemoscope and air compressor machine, and anemoscope auto-control compressor operation is for blower fan provides required constant wind speed.
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| CN201310280143.8A CN103342906B (en) | 2013-07-05 | 2013-07-05 | Copper powder pigment and manufacturing method thereof by dry milling |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102888020A (en) * | 2012-09-24 | 2013-01-23 | 陈旭 | Preparation method for brucite inorganic flame retardant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102888020A (en) * | 2012-09-24 | 2013-01-23 | 陈旭 | Preparation method for brucite inorganic flame retardant |
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