Research Article
Optimization of Exothermic, Foaming, and Mechanical Properties of Modified Polyurethane as Filling Material for Goaf Sealing Wall
Table 8
Results of variance analysis of compressive strength.
| | Factors | Square of deviance | Degree of freedom | F | Fα = 0.1 | Significant level |
| | Polyether polyols a : b | 24.113 | 3 | 1.692 | 2.810 | Significant | | Catalyst A33 | 16.105 | 3 | 1.130 | 2.810 | | | Surfactant BL-8468 | 2.527 | 3 | 0.177 | 2.810 | | | Error | 42.74 | | | | | | Sum | 85.485 | 9 | | | |
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