Method for preparing dilute UHMWPE solution and detecting its dissolution degree

The invention relates to a method for preparing a dilute UHMWPE solution and detecting its dissolution degree, and the method comprises the following steps of weighing dry UHMWPE powder or fine fragments with the mass meter of m1, mixing UHMWPE with a solvent, performing mechanical stirring after placing the mixed solution at a high temperature and constant temperature for a period of time until the stirring torque is stable; filtering the mixed liquid through a filter screen, collecting UHMWPE gel particles on the filter screen, defining the mass meter after vacuum drying as m2 through the solvent extraction, and taking the value of m2/m1 as a parameter to judge the degree of UHMWPE dissolution. Compared with the prior art, the invention uses the m2/m1 ratio as the physical "gel" contentfor quantitatively evaluating the degree of UHMWPE dissolution, and has important guiding significance for the processing of UHMWPE fibers and separators. 本发明涉及一种UHMWPE稀溶液的制备及其溶解程度检测的方法，该方法为，称取干燥的UHMWPE粉末或细小碎片，质量计为m，将UHMWPE与溶