It can be seen from the test results that vacuum drying and oven drying caused the slurry to lose a large amount of gel water at the end of the first drying, and at the same time, the pores became larger.
From the test results, it can be seen that vacuum drying and oven drying make the slurry lose a lot of gel water at the end of the first drying, while the capillary holes become large.