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Reactivity of the raw materials and their effects on the structure and properties of rigid polyurethane foams

✍ Scribed by Harpal Singh; T. P. Sharma; A. K. Jain


Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
462 KB
Volume
106
Category
Article
ISSN
0021-8995

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## Abstract Rigid polyurethane foams (PUFs) were prepared from polymeric 4,4‐diphenylmethane diisocyanate (PMDI; having functionality of 2.9), polyether polyols, silicone surfactant, amine catalysts, and distilled water. The effects of reactivity on the properties such as density, compressive and f