Preparation and Properties of Polyurethane/Molecular Sieve Powder Flame Retardant Synthetic Paper
Flame retardant polyurethane synthetic paper was synthesized through the blending wet phase transfer technique,utilizing thermoplastic polyurethane and molecular sieve powder.The flame retardancy,thermal stability,ink absorption,printing quality,and water resistance of the synthetic paper were analyzed using SEM,LOI,and TG characterization techniques.Results indicate that the incorporation of molecular sieve powder into PU synthetic paper enhances its flame retardancy and thermal stability.Specifically,with the addition of 30％molecular sieve powder,the limiting oxygen index value of the synthetic paper increased to 28.5％,while the carbon formation rate rose to 23.84％.Moreover,the ink contact angle measured at 51.67°,and the ink absorption rate reached 86.3％.Additionally,the synthetic paper exhibited favorable printing,writing,and water resistance properties.
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