Abstract: 1,3,5-benzenetricarboxylic acid tris (cyclohexylamide) (BTCA-TCHA) was synthesized and used as a nucleating agent of isotatic polypropylene, and its effects on mechanical properties, crystallization and melting behaviors of isotatic polypropylene were studied. When the loading of BTCA-TCHA was 0.2 %, tensile strength and flexural modulus of isotatic polypropylene were increased by 9.72 % and 12.4 %, respectively, and haze value decreased by 53.5 %. When the cooling rate was 20 ℃/min, crystallization peak temperature was increased from 114.6 ℃ of virgin isotatic polypropylene to 126.8 ℃.

Key words: 1, 3, 5- benzenetricarboxylic acid tris (cyclohexylamide), nucleating agent, synthesis, nucleation efficiency, isotatic polypropylene, application