A series of hydrazide compounds were synthesized and employed as nucleating agents for isotactic polypropylene (iPP). The effect of different structures of hydrazide compounds on the crystallization and melting behaviour of iPP was studied by differential scanning calorimetry (DSC). The results demonstrate that almost all nucleating agents are α-nucleating agents, some of which are highly efficient nucleating agents. In the case of the same substituent, the greater the number of hydrazide groups, the better the nucleation effect. The crystallization peak temperature (T_c) of iPP nucleated with dihydrazide is 3–4 °C higher than that of monohydrazide. When the substituent of the dihydrazide compound is hydrogen, ethyl and nonyl, their nucleating ability is relatively weak, but in the state of phenyl and cyclohexyl substitution, the T_c of iPP nucleated with dihydrazide nucleating agent is 8.5 °C than pure iPP. When the intermediate group of the dihydrazide compound is a long-chain alkyl, a phenyl, a cyclohexyl, and a naphthyl group, the phenyl group and the cyclohexyl group still exhibit an excellent effect, the T_c of nucleated iPP is raised by about 10 °C.

合成了一系列酰肼化合物，并将其用作全同立构聚丙烯（iPP）的成核剂。通过差示扫描量热法（DSC）研究了酰肼化合物不同结构对iPP结晶和熔融行为的影响。结果表明，几乎所有成核剂都是α成核剂，其中一些是高效成核剂。在相同取代基的情况下，酰肼基团的数目越多，成核效果越好。结晶峰温度（T _c）与二酰肼成核的iPP比一酰肼高3–4°C。当二酰肼化合物的取代基为氢，乙基和壬基时，它们的成核能力相对较弱，但是在苯基和环己基取代的状态下，被二酰肼成核剂成核的iPP的T _c比纯iPP的8.5°C。当二酰肼化合物的中间基团是长链烷基，苯基，环己基和萘基时，苯基和环己基仍然显示出优异的效果，成核的iPP的T _c升高约10。 ℃。