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Preparation and characterization of polyether‐based polyurethane dolomite composite
Author(s) -
Ali Vazid,
Haque Fozia Z.,
Zulfequar M.,
Husain M.
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.24839
Subject(s) - polyol , polyurethane , materials science , shore durometer , composite number , ultimate tensile strength , polypropylene glycol , composite material , diethylene glycol , polypropylene , swelling , ethylene glycol , chemical engineering , polyethylene glycol , engineering
A polyether polyol‐based two‐component polyurethane composite was prepared by a reaction of polypropylene glycol (PPG) and diethylene glycol (DEG) used as a crosslinker. The final reaction for the preparation of composite is carried out with processed polyether polyol and diphenylmethane 4,4′‐diisocyanate (MDI). The physicochemical properties of processed polyether polyol have been measured, such as viscosity, moisture content, and hydroxyl value. The composite has been formed with loading of inorganic filler dolomite [MgCa(CO 3 ) 2 ] with different filler ratios. It shows good adhesive strength and mechanical properties. Composite samples have also been studied for the effects of acids and bases, swelling in solvents, physical and mechanical properties such as compression strength, shore hardness A and D, tensile strength, and elongation. Some electrical properties have also been studied, viz. thermal conductivity, volume resistivity, and dielectric strength. A comparison of prepared polyether‐based polyurethane composite with some conventional polymeric materials suggests their suitability for various applications. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 2337–2342, 2007