Optimization of Exothermic, Foaming, and Mechanical Properties of Modified Polyurethane as Filling Material for Goaf Sealing Wall

Table 7

Results of uniaxial compressive strength.

No.	Factors				Index
		Polyether polyolsa : b	Catalyst A33	Surfactant BL-8468	UCS of PCS (MPa)	UCS of CCS (MPa)	UCS of CFS (MPa)
1		9 : 11	0.5	0.5	5.94	0.89	1.49
2		9 : 11	0.8	0.6	3.26	0.18	1.31
3		9 : 11	1.0	0.7	1.16	0.22	0.99
4		9 : 11	1.2	0.8	3.37	0.16	1.63
5		10 : 10	0.5	0.6	6.42	0.25	0.92
6		10 : 10	0.8	0.5	3.74	0.39	0.58
7		10 : 10	1.0	0.8	2.29	0.14	0.89
8		10 : 10	1.2	0.7	2.19	0.44	0.65
9		11 : 9	0.5	0.7	6.06	0.36	1.20
10		11 : 9	0.8	0.8	4.90	0.21	1.48
11		11 : 9	1.0	0.5	7.97	0.29	1.23
12		11 : 9	1.2	0.6	5.98	0.44	0.99
13		8 : 12	0.5	0.8	6.51	0.15	1.18
14		8 : 12	0.8	0.7	8.45	0.13	1.42
15		8 : 12	1.0	0.6	4.95	0.52	0.58
16		8 : 12	1.2	0.5	2.93	0.21	0.83
UCS of PCS		3.433	6.232	5.145
		3.660	5.088	5.152
		6.228	4.093	4.465
		5.710	3.618	4.268
		2.795	2.614	0.884
UCS of CCS		0.362	0.412	0.445
		0.305	0.228	0.348
		0.325	0.292	0.287
		0.253	0.313	0.165
		0.109	0.184	0.280
UCS of CFS		1.355	1.198	1.032
		0.760	1.198	0.950
		1.225	0.922	1.065
		1.002	1.025	1.295
		0.595	0.276	0.345