Page 32 - 《橡塑技术与装备》2021年6期（3月下半月 塑料）

橡塑技术与装备（塑料） CHINA RUBBER/PLASTICS TECHNOLOGY AND EQUIPMENT (PLASTICS)

3 结论 CSNPs 含量的增加，纳米复合材料的机械性能提高。
从以上的讨论可以得出，加入 CSNPs 后的 CSNPs 增强提高了拉伸强度，CSNPs 含量为 1% 时拉
CSNPP 5 纳米复合物与纯 PP 相比表现出更好的流变 伸强度达到最大。这表明，CSNPs 阻止了裂纹诱发，
性、热性能和机械性能。这些提高是由于聚合物壳层 提高了纳米复合物的拉伸强度和弹性。因此，CSNPs
通过作为介质或润滑剂的交联剂化学接枝到无机核芯 增强 PP 基体归结于以下的结合，即 CaCO 3 硬性核提
上，避免个别的无机粒子在长的聚合物链段间出现团 供了好的分散性，PMMA 壳提供了软化效应。所以，
聚而均匀分散。流变结果表明 ：随着 PP 中 CSNPs 含 通过增强 CSNPs 制备纳米复合物是一种极好的方法来
得到分散良好的纳米 -CaCO 3 。这就拓宽了 CSNPs 的
量的增加，初始扭矩和熔融黏度提高。纳米 -CaCO 3
作为核限制了部分 PMMA 接枝短链的运动。随着 工业应用。

Study on properties of nano core shell particle CaCO / PMMA
3
reinforced polypropylene composites

Zhang Lihua

(The Engineering & Technical College of Chengdu University of Technology, Chengdu 614000, Sichuan, China)
Abstract: Nano-sized calcium carbonate (nano - CaCO 3 ) / poly (methyl methacrylate) (PMMA) core shell
particles of 10~100 nm range were successfully prepared by atomization microemulsion method. The polymer
was grafted onto the surface of Nano-CaCO 3 with vinyltriethoxysilane as coupling agent. Transmission electron
microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction confirmed that Nano-
CaCO 3 encapsulated PMMA, indicating that there was a good interaction between Nano-CaCO 3 particles
and PMMA, which means that the polymer was successfully grafted onto the surface of Nano-CaCO 3 through
the coupling agent. Nano-CaCO 3 / PMMA with different contents (0.1% -1%) was mixed with polypropylene
by Brabender clay plasticity tester. PMMA grafted with Nano-CaCO 3 can obviously improve the dispersion of
Nano-CaCO 3 in PP matrix, and improve the thermal, rheological and mechanical properties of (Nano-CaCO 3
/ PMMA) / PP composites. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) showed
that Nano-CaCO 3 particles dispersed well in PP matrix through PMMA shell.
Key words: Core-shell nanoparticle; atomized microemulsion; thermal property; rheological property;
mechanical property

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