ABSTRACT
A determination method of the composition of polyamide/polyethylene blends was studied by differential scanning calorimetry. Through the study of the influence factors such as heating rate, cooling rate, sample mass and sample thickness, the best thickness is (0.7±0.1)mm , the best sample mass is (5±1)mg, and 10°C/min is the optimum temperature rise and fall rate. The comparative study of actual blend samples found that, the accuracy of melting enthalpy normalization method is better. For PE/PA blend system, the repeatability of PE and PA is between 0.65% and 5.85%.
