For some polymer materials, it is difficult to grind into fine particles. What kind of sample preparation method is used?

For some polymer materials, it is difficult to grind into fine particles, and the sample preparation methods can be hot pressing method, slicing method and solution method.

1. hot pressing method: put the polymer sample directly into a hot press, heat it to a certain temperature, and then apply a certain pressure for hot pressing. This method can prepare polymer samples with uniform density and regular shape.

2. Slicing method: Slice the polymer material with a slicer, and then slice it with a slicer or slicer into the required shape and size.

3. Solution method: the polymer sample is dissolved in a suitable solvent to make a solution, and then the polymer sample with the required shape and size is prepared by solution preparation methods (such as spin coating, spray coating, dip coating, etc.). ).