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Help CenterMaking Metallic Aluminum Paste for Coatings
Related Products
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Specifications
1,Leafing aluminium paste2,paste coatings raw material
3,superfic value 80%
3,bright white,metallic effect
4,made in china
About Aluminum Paste
Aluminum pastes |
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Aluminum pastes, a kind of metallic pigments, is formed by a great amount of tiny aluminum flakes. It is often used in dope, printing ink, and plastics. When used with other paints, special effect may appear. The particle diameter of aluminum pastes is larger than that of color pigments. While the particle size of color pigments is in the wavelength range of visible light, the flake diameter of special effect pigments is generally around 5-45μm.
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Particle shape |
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Particle shape varies from irregular flakes(cornflakes) to almost round particles(silver dollars). Silver dollars are the latest pigment generation and have excellent optical properties. They are produced in an extremely elaborate process using special, very fine granulates. Its regular particle shape decided its maximal light reflecting mill finish is hard to be curled and thus have excellent optical properties.Silver dollar series and super twinkling series are our main products and both of these two series are silver dollar series.
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Particle size |
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Particle size is one of the most important standards to differentiate varied aluminum pastes. Among the same series product, more coarse the particle diameter much more bright and white; more narrow the particle size, more excellent the coverage and looks very fine through visible lights though looks not so bright. D50, that’s medium particle size, is often used to label the particle size and its unit is μm that’s one thousand percent of millimeter.
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Particle size distribution |
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The granules of the aluminum flakes are very title so it is impossible that's every granule has the same size. The proportion of granules in different size is called particle size distribution. Particle size distribution thus has important effect on the optical properties of metallic pigments. More narrow the particle size distribution, more equal the size of the granules and more excellent the optical properties.
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Whiteness & brightness |
The metallic effect of car finishes is achieved by the reflection and scattering of light on the flakes, which are better or worse orientated in the film. |
Aluminum paste process
Non Leafing / Leafing
- Non-leafing aluminum pastes are completely wetted by the binder and thus spread evenly throughout the coating film. They are formed either by adding polar solvents to leafing pigments or, for example, by using oleic acid as a lubricant during milling.
- Unlike leafing aluminium pigments, which align themselves at the surface of the drying film, non-leafing pigments orient themselves randomly throughout the film.
- This configuration is produced because the individual particles contain a coating of oleic acid wich allows the pigment this random orientation, rather than a fatty acid that supports the physics of leafing.
- The ability of aluminium pigment particles to align themselves parallel to both the substrate and surface of a coating film as it dries is called 'Leafing'.
This phenomenon is a result of the stearic acid utilized during the production of the aluminium pigments coupled with the correct set of physical conditions necessary to support leafing.
This orientation at the surface provides the brilliance and performance characteristics required in most maintenance and trade sales coatings.
Leafing aluminium pigments are the best choice for :Industrial and trade sale coatings,Roof coatings
- Leafing aluminum pastes have a high surface tension and are thus not wetted by the binder and float on the surface of the coating film. This effect can be achieved by using stearic acid as a lubricant during milling process.
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Floating aluminum paste
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Grade
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Non-volatile (±2 )
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Mean diameter D-50 um |
Screen tailings | Superfical | Solvent | Water coverage |
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ku3205
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65 | 5 | 0.05 | 80 | INK/OIL | 35000(cm2/g)min |
Ku-3206 |
65
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8 | 0.1 | 80 | INK/OIL | 30000 (cm2/g)min |
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Ku-2601
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65 | 12 | 0.6 | 80 | MS/HA | 25000 (cm2/g)min |
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Ku-2501
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65 | 15 | 0.8 | 80 | MS/HA | 20000 (cm2/g)min |
Characteristics and Application
- Bright and white,floating high,dedicate coating.
- Paint applied to the preparation of various industries,such as Antirust Paint, coating of all kinds of ink and fabric,palstic Masterbatch release agent, thermostability paint and surface coatings.
- Floating alumnium paste can be widely used for internal and external paingting.
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