ISRO is offering technology for producing silica fibres by sol-gel process. The fibres can be used for high temperature insulation up to 1500 degrees C. The low temperature process (400 degrees C) adopted for developing silica fibres is more economical than the conventional technologies and can give high purity fine fibres. In addition, the fibres are hollow as well, thereby improving the insulation property further. Fibre Specifications:
• Composition : Silica (99.5%)
• Diameter : 1 – 20 µ
• Length : 5 – 20 mm
• Aspect ratio : 500 – 20,000
• Morphology : Amorphous (1400 o C)
• Heat Treatment : Up to 1400 o C
Similarly, ISRO is also offering technology for developing silica granules of fine sizes. The granules are produced from aero-gel chips and subsequently firing using microwaves. They can be used for high temperature insulation up to 1250 degrees C. Since they are hollow and weigh very less, they can also be used as filler materials for paints, polymer/ metal and ceramic matrices to reduce density and improve thermal properties.
Product specifications:
• Product Composition : SiO2 (99.5%)
• Diameter : <2 mm
• Bulk Density : <0.35 g/cc
• Morphology : Hollow, fibrous & Amorphous
FOR FURTHER DETAILS, CONTACT:
NewSpace India Limited (NSIL)
Email: contact-nsil@isro.gov.in
ALSO READ:
Bricks from construction waste
Superconducting nano technology from IISc
