Patent ID: 11104612

Abstract:
The present invention provides a rapid-hardening underground pipeline grouting repair polymer and a preparing method thereof for underground pipes. The rapid-hardening underground pipeline grouting repair polymer comprises the base resin and the hardener, weight ratio of which is 2:1-1:1. The base resin comprises 50 to 160 parts by weight of an isocyanate; 20 to 100 parts of a chlorophosphate mixture with a density over 1400 kg/m3; a parts by weight ratio of the isocyanate and chlorophosphate is 1:1-4:1. The hardener comprises 30 to 60 parts by weight of a chlorophosphate mixture with a density over 1400 kg/m3, 5 to 15 parts of a propyl formate, a methyl propionate or a mixture of a propyl formate and a methyl propionate, 15 to 55 parts of a polyol, 1 to 3 parts of a surfactant, 2 to 6 parts of a catalyst, 0 to 0.5 parts of water and 0 to 1 parts of a colorant.