抄録
Carbon fiber reinforced polypropylenes often exhibits poor mechanical properties because of short of bonding between fiber and matrix. Therefore, to fix the interfacial properties are important for material design. In this report, interfacial properties are studied quantitatively by interfacial share strength (IFSS) and evaluated the relationship between IFSS, composite strength and impact resistance. Composite strength and impact resistance are improved by increasing IFSS for fiber length is sufficiently short (like an injection molding). On the other hand, for composite with longer fiber length a superior impact resistance was observed with decreasing IFSS. Because longer fiber with low IFSS requires higher energy to pull out fiber from matrix than interfacial debonding.
