Preparation and Sealing Performance of a New Coal Dust Polymer Composite Sealing Material

Table 2

Scheme of the orthogonal test.

Test group	Coal-dust content (%) (A)	Water-material ratio (B)	Cross-linking agent content (%) (C)
1	(A1) 50	(B1) 1.0 : 1	(C1) 1.5
2	50	(B2) 1.2 : 1	(C2) 2.0
3	50	(B3) 1.5 : 1	(C3) 2.5
4	50	(B4) 1.9 : 1	(C4) 3.0
5	(A2) 75	1.0 : 1	2.0
6	75	1.2 : 1	1.5
7	75	1.5 : 1	3.0
8	75	1.9 : 1	2.5
9	(A3) 100	1.0 : 1	2.5
10	100	1.2 : 1	3.0
11	100	1.5 : 1	1.5
12	100	1.9 : 1	2.0
13	(A4) 125	1.0 : 1	3.0
14	125	1.2 : 1	2.5
15	125	1.5 : 1	2.0
16	125	1.9 : 1	1.5