Needle Single Crystal Calcium Sulphate Whisker CAS 7778-18-9 10101-41-4

Needle Single Crystal Calcium Sulphate Whisker CAS 7778-18-9 10101-41-4 Calcium Sulfate Whisker

Description:
Calcium sulfate whiskers, also known as gypsum whiskers, are microscopic crystalline fibers composed of calcium sulfate dihydrate (CaSO4 · 2H2O). They have a needle-like or whisker-like shape and are typically several micrometers in length and only a few hundred nanometers in diameter. These whiskers are produced through controlled crystallization processes from supersaturated calcium sulfate solutions.

Data Sheet:
 

• Chemical Formula: CaSO4 · 2H2O
• Density: Approximately 2.32 g/cm3
• Melting Point: 1450 °C
• Solubility: Soluble in water
• Crystal Structure: Orthorhombic
• Aspect Ratio: High aspect ratio, typically several micrometers in length and few hundred nanometers in diameter
• Purity: Varies depending on the manufacturing process and specific application

Function:
Calcium sulfate whiskers serve various functions based on their unique properties. Some of the key functions include:

1. Reinforcement: Calcium sulfate whiskers act as reinforcing agents in composite materials, enhancing their mechanical properties, such as strength, stiffness, and impact resistance.

2. Fire Resistance: These whiskers improve the fire resistance and reduce flammability when incorporated into materials like plastics or coatings.

3. Thermal Insulation: Calcium sulfate whiskers have low thermal conductivity, making them useful as fillers in insulation materials to reduce heat transfer and enhance energy efficiency.

4. Rheology Modifier: Whiskers can act as rheology modifiers in formulations such as paints, adhesives, and coatings, improving viscosity control, thixotropy, and sag resistance.

5. Filtration: The fine structure of calcium sulfate whiskers makes them suitable for filtration applications, such as in water treatment, air purification, and Chemical processes.

Application:
Calcium sulfate whiskers find application in various industries and research fields. Some notable applications include:

1. Composite Materials: Whiskers are used as reinforcements in polymer composites to enhance their mechanical properties.

2. Fire-Resistant Materials: They are incorporated into plastics, coatings, and construction materials to improve fire resistance and reduce flammability.

3. Insulation Materials: Whiskers are added to insulation materials like foams, boards, and coatings to enhance thermal insulation properties.

4. Paints, Adhesives, and Coatings: Calcium sulfate whiskers act as rheology modifiers, improving the performance and application properties of these formulations.

5. Filtration Systems: The fine structure of whiskers makes them suitable as filter media in water treatment, air purification, and Chemical processes.

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