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首先利用共混改性以及注塑成型的方法制备了聚丙烯(PP)与纳米竹炭粉(NBC)复合材料,然后利用XRD、DSC、SEM等手段系统分析了复合材料结构与性能的关系。结果表明:当NBC添加量超过9.0%时,两相相容性变差;复合材料的相对结晶度和熔点均随着NBC添加量的增加呈现先升高后降低的趋势;复合材料中PP主要以α-晶型存在,当纳米竹炭粉的含量较低(9.0%以内)时,诱导生长γ-晶型PP晶体;而当纳米竹炭粉含量较大(9.0%以上)时,诱导生长β-晶型;通过DSC与XRD分析可知,β-晶型与γ-晶型均易在升温过程中转变为α-晶型。
Firstly, polypropylene (PP) and nanocrystalline bamboo charcoal powder (NBC) were prepared by blending and injection molding. Then the relationship between structure and properties of the composites was systematically analyzed by means of XRD, DSC and SEM. The results showed that the compatibility of two phases decreased when the content of NBC was over 9.0%. The relative crystallinity and melting point of the composites increased first and then decreased with the addition of NBC. The main PP in the composites Γ-crystal PP crystals were induced when the content of nano-bamboo charcoal powder was low (less than 9.0%). However, when the content of nano-bamboo charcoal powder was larger than 9.0%, the β- Crystallography; By DSC and XRD analysis shows that, β-and γ-crystal form are easily transformed into α-crystalline form during heating.