Calcium Sulphate Fiber (CSW) also called Gypsum Fiber.

Incorporating calcium sulfate fibers, specifically in the form of calcium sulfate whiskers (CSWs), into structural adhesives offers several notable advantages:

• Enhanced Mechanical Strength: CSWs possess high tensile strength and stiffness. When used as fillers, they can significantly improve the mechanical properties of the adhesive, leading to stronger and more durable bonds.
• Improved Toughness: The fibrous nature of CSWs allows them to bridge cracks and deflect crack propagation within the adhesive matrix. This mechanism enhances the toughness of the adhesive, making it more resistant to fracture under stress.
• Thermal Stability: CSWs exhibit good thermal stability and high-temperature resistance, maintaining their structural integrity at elevated temperatures. This property is beneficial for adhesives exposed to high-temperature environments. 
• Chemical Resistance: CSWs are chemically stable and resistant to various chemicals, including acids and alkalis. This characteristic enhances the durability of the adhesive when exposed to corrosive substances. 
• Improved Interfacial Adhesion: Surface modification of CSWs can increase their compatibility with polymer matrices, leading to better interfacial adhesion between the filler and the adhesive. This results in a more homogeneous distribution and improved overall performance of the adhesive.