The differential scanning calorimetry(DSC), X-ray diffraction(XRD) and polarizing optical microscopy(POM) were used to study the crystallization properties of the polypropylene 1102K and the contrast grade samples. The results indicated that 1102K has the highest crystallization and melting temperature, the higher crystallization rate, the better crystallinity and the higher isotactic index in the three samples.%通过差示扫描量热(DSC)，X射线衍射(XRD),偏光显微镜(POM)等手段，研究了聚丙烯(PP)1102K，T30S及F401对比牌号试样的结晶性能。结果表明,3个牌号的PP中，1102K结晶温度和熔融温度最高，结晶速率较快，结晶效果较好，结构规整性较高。
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