Study on Preparation and Characterization of Graphene Based on Ball Milling Method

Table 5

Factor-level table for experimental design.

Factor		Level
		1	2	3	4	5	6	7	8	9
/g		1	1.5	2	2.5	3	3.5	4	4.5	5
/g		1	1.5	2	2.5	3	3.5	4	4.5	5
/g	0.2 mm	6	0	0	3	0	3	2	3	2.5
	0.4 mm	0	6	0	0	3	3	2	2	1
	0.8 mm	0	0	6	3	3	0	2	1	2.5