CAJ | 학술논문

以埃洛石纳米管（HNT）掺杂的Ziegler-Natta催化剂（MgCl2/TiCl4）催化丙烯聚合，制备了HNT含量（w）为（20～168）×10-6的聚丙烯树脂（PP-HNT），研究了添加极少量HNT对聚丙烯性能的影响。实验结果显示，HNT的掺杂对MgCl2/TiCl4催化剂的活性和立构选择性无显著影响；直接从反应器中获得的PP-HNT树脂具有良好的颗粒形态，其中HNT粒子分散均匀；PP-HNT树脂的相对分子质量、等规度和熔融温度、熔融焓均与普通聚丙烯树脂相近，但除断裂伸长率外的各项力学性能相比后者均有明显提高，当HNT含量（w）仅为56×10-6时，PP-HNT树脂的拉伸屈服强度、杨氏模量和弯曲模量分别提高了18%，34%，31%；与普通聚丙烯树脂相比，PP-HNT树脂的热稳定性显著提高。
이애락석납미관（HNT）참잡적Ziegler-Natta최화제（MgCl2/TiCl4）최화병희취합，제비료HNT함량（w）위（20～168）×10-6적취병희수지（PP-HNT），연구료첨가겁소량HNT대취병희성능적영향。실험결과현시，HNT적참잡대MgCl2/TiCl4최화제적활성화립구선택성무현저영향；직접종반응기중획득적PP-HNT수지구유량호적과립형태，기중HNT입자분산균균；PP-HNT수지적상대분자질량、등규도화용융온도、용융함균여보통취병희수지상근，단제단렬신장솔외적각항역학성능상비후자균유명현제고，당HNT함량（w）부위56×10-6시，PP-HNT수지적랍신굴복강도、양씨모량화만곡모량분별제고료18%，34%，31%；여보통취병희수지상비，PP-HNT수지적열은정성현저제고。
Polypropylene(PP) resins containing halloysite nanotubes(HNT) of (20-168)×10-6(w) were prepared using a Ziegler-Natta catalyst(MgCl2/TiCl4) doped with HNT. It was found that the effects of HNT on the activity and stereo-selectivity of the parent catalyst were not significant. The PP-HNT resins directly prepared in a polymerization reactor displayed good particle morphology and HNT was dispersed in the resins well. Similar to general PP resins in viscosity-average molecular weight, isotacticity,melting temperature and melting enthalpy,the PP-HNT resins were noticeably superior to the general PP resins in mechanical properties except for elongation at break. When HNT content(w) was 56×10-6,the tensile yield strength,Young’s modulus and flexural modulus of the PP-HNT resin increased by 18%,34% and 31%,respectively. The thermal stabilityof the PP-HNT resins in nitrogen was measured by means of TG,which was much higher than that of general PP resins.