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Study of Polymer Binders to Develop Low Emissive Paints for Thermal Radiation Management Applications

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Title Study of Polymer Binders to Develop Low Emissive Paints for Thermal Radiation Management Applications
 
Creator Dev, Om
Dayal, Shanker
Dubey, Ashish
Dixit, Alok K
 
Subject Low emissive coatings
Thermal signature
Temperature control
Camouflage and stealth
Cool roof
 
Description 347-353
The management of thermal emittance always possess challenges in both military and civil domains. The low emissive
materials in form of paints offers viable solution for minimising thermal emittance of military objects for camouflage and
enhancing infrared reflectivity of roof to reduce cooling loads. Binder apart from pigments is one of the critical components
of low emissive paint formulation to decide its ultimate performance. For selection of appropriate resin and binder, a
comparative study of five prevalent polymers viz. polyurethane (PU), poly vinyl chloride (PVC), polyethylene (PE),
polypropylene (PP) and poly methyl methacrylate (PMMA) has been carried out. Polymeric film of thickness 100μm of
each of the polymer is prepared by Elcometer 4340 motorized film applicator. Infrared spectra and thermogravimetric
profile have been obtained by Bruker make Tensor 27 FTIR in spectral range 4000 – 600 cm-1 and TGA Q 500. Film
formation of PU is excellent and transmission in 3-5 μm is almost 100%. Hence, it may be chosen as binder in low emissive
paint for MWIR band. PVC and PMMA among the polymers offer excellent transmission 87-99% in both thermal
transmission windows 3-5 μm and 8-12 μm. Thermogravimetric (TG) profile of polymer films evident of thermal stability
of PVC, PMMA and PU polymers up to 200 °C. Infrared transmission, TG profile and film formability manifest that both
binders- PVC and PMMA are suitable for development of low emissive paints applicable up to temperature 200 °C for both
IR transmission windows to evade thermal detectors working for detection of military objects and reducing cooling load in
buildings by enhancing reflectivity of roof by application of low emissive paint.
 
Date 2022-04-12T09:31:02Z
2022-04-12T09:31:02Z
2022-04
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscair.res.in/handle/123456789/59518
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJPAP Vol.60(04) [April 2022]