球晶(高分子物理)
材料科学
战术性
复合材料
结晶
聚丙烯
云母
差示扫描量热法
艾氏冲击强度试验
韧性
色散(光学)
形态学(生物学)
光学显微镜
扫描电子显微镜
聚合物
化学工程
极限抗拉强度
聚合
物理
工程类
光学
热力学
生物
遗传学
作者
Qiang Dou,Ming‐Rui Meng,Lin Li
摘要
Abstract Pimelic acid (PA) is used as a new surface modifier for mica (MC). The effects of PA treatment on the crystallization, morphology, and mechanical properties of isotactic polypropylene (iPP)/MC composites have been investigated. FTIR analysis reveals that PA reacted with phlogopite MC, and pimelates are formed during the treatment. The results of wide angle X‐ray diffraction, differential scanning calorimetry, and polarized light microscopy prove that PA‐treated MC induces a large amount of β‐iPP and decreases the spherulite size of iPP. The results of SEM show that PA treatment improves the orientation and dispersion of MC plates in the matrix. The notched impact strength of the composites is improved dramatically by PA‐treated MC. The superior toughness is ascribed to the more ductile β spherulites, preferential orientation of MC plates, small spherulite size, and improved dispersion of MC plates in the matrix. POLYM. COMPOS., 31:1572–1584, 2010. © 2009 Society of Plastics Engineers
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