Research Article
Experimental Study on Reducing the Heat of Curing Reaction of Polyurethane Polymer Grouting Material
Table 5
Experiment scheme with different prepolymer contents (%).
| | Experiment number | White material | Black material | | Prepolymer 1 (NOC of 18.5%) | Prepolymer 2 (NOC of 21.4%) | Prepolymer 3 (NOC of 16.6%) | Prepolymer 4 (NOC of 23.5%) | Polyphenyl polymethylene isocyanate | High-boiling point solvent |
| | 1 | 100 | 45 | 0 | 0 | 0 | 50 | 5 | | 2 | 100 | 0 | 45 | 0 | 0 | 50 | 5 | | 3 | 100 | 0 | 0 | 45 | 0 | 50 | 5 | | 4 | 100 | 0 | 0 | 0 | 45 | 50 | 5 |
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