Carbon Nanotube Layer for Reduction of Fiber Print-Through in Carbon Fiber Composites

Table 3

2D parameters of roughness measurement of materials .

Composite designation							-
	Measurement; (nm)	Reduction; (%)	Measurement; (nm)	Reduction; (%)	Measurement; (nm)	Reduction; (%)	Measurement; (nm)	Reduction; (%)
IM7	2528	- - -	11010	- - -	15623	X	4613	X
IM7/LY556	552	78	3815	65	7283	53	3468	25%
IM7/1T	875	65	3119	72	7018	55	3899	15%
IM7/1A	307	88	1537	86	2739	82	1202	74%
IM7/1TD	254	90	1229	89	1954	87	725	84%
IM7/1AP	117	95	816	93	1401	91	585	87%
IM7/1AP(4)-3R	100	96	628	94	959	94	331	93%
IM7/1AP-3R	122	95	645	94	980	94	335	93%
IM7/2AP-3R	230	91	1267	88	1570	90	302	93%

Results present the average of values for both directions studied. The percentage of reduction is relative to IM7 composite (without any additional surface layer).