Discussion on the identification methods for blended products of polyamidoester and polyester
By performing DSC melting point tests on blends of polyamidoester and polyester fibers at different ratios during first and second heating cycles,and comparing with the melting point method using a microscope,it was demonstrated that in the sec-ond heating cycle test of DSC,the melting point of polyamidoester or polyester fibers cannot be directly obtained when the content is low in the blended sample.There are cases of missed inspections.Additionally,the melting point method using a microscope is more clear and intuitive for distinguishing the melting points of polyamidoester and polyester fibers in blended samples compared to the DSC melting point method,especially for samples with low polyamidoester content.Therefore,the melting point method us-ing a microscope is more suitable for identifying blends of polyamidoester and polyester fibers than the DSC melting point method,providing a practical theoretical basis for the identification of blended products containing polyamidoester and polyester fibers.
polyamidoesterpolyestermicroscope melting point methodidentification
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