Two interesting technologies developed by ISRO are now available for commercial exploration through transfer of know-how

High Emissivity Coating - HESC-29Indian Space Research Organisation at its Vikram Sarabhai Space Centre (VSSC) has developed a number of specialty coatings to meet the specific requirements in Launch Vehicles and Satellites. These coatings may also find various industrial applications. One such coating system is HESC- 29.

HESC-29 is a special coating system developed as a high temperature resistant enamel coating. This coating finds application as a high solar emissive topcoat on polymer composite surfaces. It is also used as a high emissive and thermal insulative coating on the PCB sensor cards for specific applications. This room temperature curable, silicone based coating system contains special inorganic fillers, which imparts high emissivity to the system. It can withstand temperatures in the range of 80 to 280?C. ISRO requires about 30 to 50 kg of this compound per annum. Other applications of HESC-28 include anticorrosion and weather/rain proof coating on metallic/composite substrates. The coating is weather and high temperature resistant and lasts long. It is a two-part resin system. When the two parts are mixed together and coated, curing takes place at ambient conditions. It can be easily coated/brushed on any substrates.

The technology of developing this high emissivity coating is available for know how transfer to entrepreneurs working in a similar field. Interested entrepreneurs are requested to contact the address given below with relevant particulars regarding their line of current activity, infrastructure available, market assessment of the product, financial arrangements made, turn over and sales of their products for the past few years.

Waterproofing Compound RWPC-03

RWPC-03 is a waterproofing compound developed by Indian Space Research Organisation at its Vikram Sarabhai Space Centre for the waterproofing of silica foam tiles and for silica felt/fabric based flexible insulation. It is an alkoxy silane based system, processed by controlled hydrolysis of siloxanes and is environment friendly. The treatment involves applying an aqueous solution of the organo-polysiloxane waterproofing agent on the substrate (preferably glass and silica based) and heating them to form a waterproofed article. In the case of silica tiles and silica felt/fabrics, water absorption could be brought down from 350% to <1.5% using this compound. It can potentially be used as general-purpose water proofing compound for silica based components including composites.

ISRO offers the know-how to capable small/medium scale specialty polymer manufacturers, looking for new product line. Interested parties are requested to write immediately with details of their present activities and product lines, capabilities, infrastructure, their own product assessment and their plans for implementing this technology.

For further information contact: Technology Transfer & Industrial Coordination Division, Vikram Sarabhai Space Centre, Indian Space Research Organisation, Thiruvananthapuram, Kerala 695 022. Tel: 0471-2564081, 2565133. Fax: 91-471-2564134. Email: a_muralidhar@ vssc.gov.in