Water content of modified polyester chips were determined by pressure-difference method after being dried and solidstatepolycondensation.
介绍了用压差法测定改性聚酯切片经干燥和固相聚合后的含水率。
2
The third generation PET new technique(NG3) is introduced, the process is from esterification autoclave to column reactor then to modified solidstatepolycondensation system.