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strontium aluminate phosphorescent powder

Purple strontium aluminate phosphorescent glow powder pigment supplier

iSuoChem® purple phosphorescent pigment which is a kind of energy storage powder, is certificated by SGS, ISO17514, DIN67510 Part 1-4.

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Green luminescent powder for painting

Fluorescent Green coloring luminescent pigment manufacturer

Energy storage powder, iSuoChem® Luminous Pigment glows in the dark after absorbing different visible light and can reuse repeatedly. Certificates of SGS, ISO17514, DIN67510 Part 1-4 are available.

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fluorescent photoluminescent pigment

Photoluminescent blue-green ceramic glow in the dark pigment

iSuoChem® Fluorescent photoluminescent pigment glows blue-green color in the dark after absorbing different visible light and can reuse repeatedly.

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strontium aluminate glow powder for plastic

Wholesale Blue-green strontium aluminate glow in the dark powder

iSuoChem® glow in the dark powder glows blue-green light in the dark after absorbing different visible light and can reuse repeatedly.

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silver white mica powder for ink print

Fine rutile sterling mica base silver white pearl pigment manufacturer

REACH registration, SGS, ISO certification, low heavy metal content, 95%min color consistence, Malvern Particle size test, X-RITE color and brightness test, QUV test, to ensure good quality of pearlescent pigment.

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Multichrome Pigment

iSuoChem Refractive Metal Color Shifting Multichrome Pigment

iSuoChem® Multichrome Pigments are a special type of pigment that have the property of changing color as light changes.

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Silver Sparkling glitter powder

Hexagon Sparkling silver bulk glitter powder

iSuoChem® YS1001 Silver Sparkling glitter powder conforms to SGS, REACH, OEKO-TEXT Standard 100, free formaldehyde, free bisphenol A, solvent resistant, high temperature resistant, fashion colors, Various glitter powder for your choice.

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Optical Changeable lnk Pigment

Purple/kingfisher/Blue High Color Intensity Optical Changeable lnk Pigment

iSuoChem® HC17 Security Pigment is a kind of Optical Changeable lnk Pigment(OCIP), Optically Variable Pigment (OVP) and Optically Variable Magnetic Pigment (OVMP).

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What is the relationship between particle size and specific surface area in pigments?

Nov. 04,2024

What is the relationship between particle size and specific surface area in pigments?


Definition

1. What is pigment particle size: Pigment Particle Size refers to the volume size or dimension of a pigment particle. Pigment particles can be tiny particles and their sizes are usually measured in micrometers (μm) or nanometers (nm).

2. What is specific surface area: It is the surface area per unit mass or per unit volume of the pigment. In simple terms, it is the ratio of the total surface area of a pigment particle to its mass or volume.

Relationships between particle size and specific surface area in pigments

Pic# A


Relationships between particle size and specific surface area in pigments?

1. The effect of particle size on specific surface area. (See Pic#A)

1-1. As the size of a pigment particle decreases, its surface area increases. This is because the surface area of a particle is calculated from its surface area integral, and the smaller the particle, the greater the result of the surface area integral.

The smaller the particle, the greater the result of the surface area integration. On the other hand, as the size of the pigment particle increases, its surface area decreases.

2. The importance of specific surface area:

2-1. Specific surface area is an important index to measure the surface activity and reactivity of pigment. The larger the specific surface area is, the higher the surface activity and reactivity of the pigment is.

2-2. In practical application, the size of specific surface area affects the pigment's coloring power, covering power, light resistance, weather resistance and other properties.


What kind of important role does the relationship between specific surface area and particles play in Technical Data Sheet of pigments?

In fact, the relationship between specific surface area and particles mainly affects the index of oil absorption. Oil absorption, to a certain extent, can tell us how big the specific surface area of the pigment is. Specific surface area is like the “skin area” of the pigment. If the particles of the pigment are very small, then its “skin area” will be larger, and more oil needs to be infiltrated, so the oil absorption will be higher. On the other hand, if the pigment particles are very large, the “skin area” will be small, the oil needed will be less, and the oil absorption will be low.


Actual Cases from iSuoChem Effect Pigments:

1. Organic pigment. In this products, we usually use oil absorption in TDS. Like Pigment yellow PY 83, its oil absorption is 40-50 ml/100g.

2. Pearlescent pigment. Pearl pigment also uses oil absorption to tell the customers whether this code is what they need. Like AS300 Gold luster pearl pigment, its oil absorption is 70-90 g oil/100g powder.

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