It is found that the PBT/PET polyblend shows a good compatibility.Intrinsic viscosity of the blend strengthens with the increment of PBT, PET and PET promote the crystallization each other.

• 研究发现：PBT／PET共混纤维属相容性较好的相容体系，特性粘度随PBT含量的增加而增加，PBT／PET存在相互促进结晶的作用。