DE1519003B2 - Process for making an aluminum paste - Google Patents
Process for making an aluminum pasteInfo
- Publication number
- DE1519003B2 DE1519003B2 DE19621519003 DE1519003A DE1519003B2 DE 1519003 B2 DE1519003 B2 DE 1519003B2 DE 19621519003 DE19621519003 DE 19621519003 DE 1519003 A DE1519003 A DE 1519003A DE 1519003 B2 DE1519003 B2 DE 1519003B2
- Authority
- DE
- Germany
- Prior art keywords
- aluminum
- pastes
- paste
- flakes
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/068—Flake-like particles
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/62—Metallic pigments or fillers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/62—Metallic pigments or fillers
- C09C1/622—Comminution, shaping or abrasion of initially uncoated particles, possibly in presence of grinding aids, abrasives or chemical treating or coating agents; Particle solidification from melted or vaporised metal; Classification
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/62—Metallic pigments or fillers
- C09C1/64—Aluminium
- C09C1/644—Aluminium treated with organic compounds, e.g. polymers
- C09C1/646—Aluminium treated with organic compounds, e.g. polymers concomitant with mechanical comminution, shaping or abrasion of the particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Paints Or Removers (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Description
Die Erfindung betrifft ein Verfahren zur Herstellung von Pasten von Aluminiumschuppen, die sich in Wasser oder einem organischen Lösungsmittel gleichmäßig dispergieren lassen und eine sehr große Deckkraft besitzen. Sie kann man für Anstriche, Lacke oder zur Hervon Schaumbeton verwenden.The invention relates to a method of manufacture of pastes made of aluminum flakes, which are evenly dissolved in water or an organic solvent Allow to disperse and have a very high covering power. They can be used for paints, varnishes or for Hervon Use foam concrete.
Es ist bekannt, Produkte aus Aluminiumpulver und Stearin insbesondere in der Anstrichtechnik zu verwenden. Diese Produkte bilden mit Lösungsmitteln aus Erdöl, wie Toluol oder Xylol, eine Paste.It is known to use products made of aluminum powder and stearin, especially in painting technology. These products form a paste with petroleum solvents such as toluene or xylene.
Die Herstellung von Pasten aus Aluminiiimschuppen erfolgte bisher durch Vermählen von Aluminiumpulver mit Stearinsäure. Diese bekannten Pasten weisen jedoch einen sehr wesentlichen Nachteil auf, nachdem die an den Aluminiumschuppen haftende Stearinsäure eine Benetzung mit wäßrigen Anstrichmitteln im Rahmen der Verwendung der Aluminiumpasten verhindert.The manufacture of pastes from aluminum flakes was previously done by grinding aluminum powder with stearic acid. However, these known pastes have has a very significant disadvantage after the stearic acid adhering to the aluminum flakes prevents wetting with aqueous paints when using the aluminum pastes.
Man hat zum Anmachen von Aluminiumpasten auf die für die Anwendung geeignete Konsistenz verschiedene Kohlenwasserstoffe und mehrwertige Alkohole angewandt. Hier handelt es sich jedoch im Gegensatz zu dem erfindungsgemäßen Verfahren um die Bereitung einer streichfähigen Masse, nicht jedoch um die Herstellung der Aluminiumpaste selbst (französische Patentschrift 1147 873). · ..There are various ways to mix aluminum pastes to the right consistency for the application Hydrocarbons and polyhydric alcohols are used. However, this is the opposite to the method according to the invention to the preparation a spreadable mass, but not the production of the aluminum paste itself (French patent 1147 873). · ..
Die Erfindung betrifft die Herstellung von Pasten von Aluminiumschuppen, die sich einwandfrei in wäßrigen Flüssigkeiten dispergieren lassen. Das erfindungsgemäße Verfahren zur Herstellung von Pasten von Aluminiumschuppen durch Walzen eines Aluminiumpulvers in Gegenwart eines Mahlmediums in einem Kohlenwasserstoff-Verdünnungsmittel ist nun dadurch gekennzeichnet, daß das Aluminiumpulver mit 3 bis 15, vorzugsweise 5 bis 10 Gewichtsprozent eines Mischpolymerisats von Äthylenoxid und Propylenoxid mit einem Molekulargewicht von 1500 bis 2000 in mindestens 100 Gewichtsprozent gesättigtem Kohlenwasserstoff-Verdünnungsmittel gemahlen wird. Es wird dann überschüssiges Verdünnungsmittel entfernt, um die Paste einzudicken.The invention relates to the production of pastes from aluminum flakes, which are perfectly in aqueous Allow liquids to disperse. The process according to the invention for the production of pastes from aluminum flakes by rolling an aluminum powder in the presence of a milling media in a hydrocarbon diluent is now characterized in that the aluminum powder with 3 to 15, preferably 5 to 10 percent by weight of a copolymer of ethylene oxide and propylene oxide with a molecular weight of 1500 to 2000 in at least 100 weight percent saturated hydrocarbon diluent is milled. It will then Removed excess diluent to thicken the paste.
Durch das erfindungsgemäße Walzen des Aluminiumpulvers entstehen flache Flitter oder Schuppen, die eine sehr viel bessere Deckkraft besitzen als die der bekannten Aluminiumpasten. Darüber hinaus lassen sich die erfindungsgemäßen Pasten homogen in wäßrigen und organischen Lösungsmitteln dispergieren.The inventive rolling of the aluminum powder creates flat flakes or flakes, which have a much better coverage than that of the well-known aluminum pastes. In addition, let the pastes according to the invention disperse homogeneously in aqueous and organic solvents.
In dem erfindungsgemäßen Verfahren verwendet man handelsübliche Aluminiumpulver. Das Pulver besitzt eine oberflächliche Oxidhaut, die bei der Herstellung entsteht, wird jedoch keiner besonderen Behändlung unterworfen, auch nicht mit Stearinsäure. Die handelsüblichen Pulver enthalten 99% Aluminium; ihre mittlere Korngröße beträgt 60 μ.Commercially available aluminum powder is used in the process according to the invention. The powder possesses however, a superficial oxide skin that arises during manufacture does not require any special treatment subjected, not even with stearic acid. The commercially available powders contain 99% aluminum; their mean grain size is 60 μ.
Man kann das erfindungsgemäße Verfahren z. B. mit einer Kugelmühle, Hammermühle oder Schwingmühle durchführen. Das Mahlen geschieht vorzugsweise bei Raumtemperatur, die Dauer hängt von der Leistungsfähigkeit der Mühle ab. Der Zweck dieser Behandlung ist nicht so sehr, die Korngröße der Metallpulver herabzusetzen, sondern jedes Pulverteilchen zu einem Blättchen oder Flitter zu walzen, bei dem die Dicke gegenüber Länge und Breite sehr gering ist.You can use the inventive method z. B. with a ball mill, hammer mill or vibrating mill carry out. Grinding is preferably done at room temperature, the duration depends on the Performance of the mill. The purpose of this treatment isn't so much the grain size of the metal powder but to roll each powder particle into a sheet or tinsel, in which the Thickness compared to length and width is very small.
Wenn dies erreicht ist, so dickt man die Paste durch Entfernen des größtmöglichen Teils des Kohlenwasserstoff-Verdünnungsmittels mit Hilfe von Zentrifugen oder durch Filtrieren ein; das an der Aluminiumoberfläche absorbierte Mischpolymerisat wird dabei praktisch nicht entfernt. Man erhält so eine Paste mit etwa 50 % Aluminium.When this is achieved, the paste is thickened by removing as much of the hydrocarbon diluent as possible by means of centrifuges or by filtration; that on the aluminum surface absorbed copolymer is practically not removed. So you get a paste with about 50% aluminum.
Die Hauptanwendungsgebiete der erfindungsgemäß hergestellten Pasten liegen in der Herstellung von metallisierten Anstrichen, Hammerschlaglacken und von Schaumbeton. Da das verwendete Mischpolymerisat in Wasser löslich ist, so kann das in der Paste enthaltene Aluminium mit verdünnten Säuren oder Laugen reagieren, worauf die Anwendbarkeit dieser Pasten für verschiedene chemische Reaktionen, in denen feinverteiltes Aluminium benötigt wird, beruht.The main areas of application of the pastes produced according to the invention are in the production of metallized ones Paint, hammer finish and foam concrete. Because the copolymer used is soluble in water, the aluminum contained in the paste can be mixed with dilute acids or alkalis react to what the applicability of these pastes for various chemical reactions in which finely divided Aluminum is needed is based.
In eine Mühle mit Stahlkugeln wurde eingesetzt: 100 kg Aluminiumpulver (99 %ig), mittlere Korngröße 60 μ, 8 kg Äthylenoxid-Propylenoxid-Mischpolymerisat mit einem Molekulargewicht von ungefähr 1900 und einem Hydroxylwert von 58,8 und 200 kg Testbenzin und bei Raumtemperatur 36 Stunden gemahlen; dann wurde durch Zentrifugieren etwa 50% Testbenzin entfernt und die Paste dadurch eingedickt. Man erhielt eine mit Wasser benetzbare Paste von Aluminiumteilchen in Form von feinen Schuppen, deren Deckkraft einem Aluminiumpulver mit 3,6 m2/g entsprach. In a mill with steel balls were used: 100 kg aluminum powder (99%), average grain size 60 μ, 8 kg ethylene oxide-propylene oxide copolymer with a molecular weight of around 1900 and a hydroxyl value of 58.8 and 200 kg white spirit and at room temperature 36 Milled hours; then about 50% white spirit was removed by centrifugation and the paste was thereby thickened. A water-wettable paste of aluminum particles in the form of fine flakes was obtained, the hiding power of which corresponded to an aluminum powder of 3.6 m 2 / g.
Die Anwendung von reinerem Aluminiumpulver, beispielsweise 99,7 %igem, gestattet eine bemerkenswerte Steigerung der Deckkraft, selbst dann, wenn die durchschnittliche Korngröße nur 120 μ beträgt.The use of purer aluminum powder, for example 99.7%, allows a remarkable one Increased coverage, even if the average grain size is only 120 μ.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR872695A FR1306733A (en) | 1961-09-08 | 1961-09-08 | Metallic powders and pastes |
Publications (2)
Publication Number | Publication Date |
---|---|
DE1519003A1 DE1519003A1 (en) | 1969-01-30 |
DE1519003B2 true DE1519003B2 (en) | 1970-06-11 |
Family
ID=8762503
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19621519003 Pending DE1519003B2 (en) | 1961-09-08 | 1962-09-07 | Process for making an aluminum paste |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE622181A (en) |
CH (1) | CH412158A (en) |
DE (1) | DE1519003B2 (en) |
ES (1) | ES280582A1 (en) |
FR (1) | FR1306733A (en) |
GB (1) | GB1016893A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4574138A (en) * | 1984-01-09 | 1986-03-04 | Moran Jr James P | Rapid cure acrylic monomer systems containing elemental aluminum metal |
US4722960A (en) * | 1983-01-18 | 1988-02-02 | Loctite Corporation | Aluminum filled compositions |
CA2163529C (en) * | 1993-05-26 | 1999-11-16 | Colin Appleyard | Process for the production of a metal pigment dispersion for use in a paint or lacquer or an ink, and metal pigment dispersion obtained thereby |
WO2017207025A1 (en) * | 2016-05-31 | 2017-12-07 | Eckart Gmbh | Method for producing plastically deformed metal particles |
CN107486553B (en) * | 2016-06-12 | 2019-08-02 | 苏州铜宝锐新材料有限公司 | Aluminium cream and its application |
-
0
- BE BE622181D patent/BE622181A/xx unknown
-
1961
- 1961-09-08 FR FR872695A patent/FR1306733A/en not_active Expired
-
1962
- 1962-09-05 GB GB34034/62A patent/GB1016893A/en not_active Expired
- 1962-09-06 ES ES0280582A patent/ES280582A1/en not_active Expired
- 1962-09-06 CH CH1058062A patent/CH412158A/en unknown
- 1962-09-07 DE DE19621519003 patent/DE1519003B2/en active Pending
Also Published As
Publication number | Publication date |
---|---|
FR1306733A (en) | 1962-10-19 |
GB1016893A (en) | 1966-01-12 |
BE622181A (en) | |
DE1519003A1 (en) | 1969-01-30 |
ES280582A1 (en) | 1963-04-16 |
CH412158A (en) | 1966-04-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
E77 | Valid patent as to the heymanns-index 1977 |