Environmentally friendly and harmless high flame retardant coal mine water plugging and strengthening polymer material for coal rock mass and preparation method
A polymer material and high flame-retardant technology, applied in the field of polyurethane materials, can solve problems such as environmental pollution and flame-retardant performance degradation
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Embodiment 1
[0030] Example 1: The preparation method of phenolic phosphonate polyols is: 100g triphenyl phosphite, 50g DEG, 0.1g 2,6-di-tert-butyl p-cresol and 0.01g tetrabutyl titanate Ratio feeding in an autoclave to ensure the nitrogen environment in the autoclave, react at 135°C for 6 hours, cool down to 85°C, add 15g of formaldehyde, the reaction is exothermic, the temperature gradually rises to 105°C, and continue to react at 100°C for 4 hours. Remove unreacted formaldehyde, add 15g epoxy resin DYD-127, add ethylene oxide until the acid value drops below 5mgKOH / g, vacuum remove unreacted ethylene oxide, add 25g epoxy resin DYD-127 get the product. Phosphonate polyols with a phosphorus content of 4.88% were obtained after adsorption, filtration, distillation and other processes, and no hydrolysis was found during storage.
[0031] An environmentally friendly, harmless and highly flame-retardant polymer material for coal mine water plugging and reinforcement of coal rock mass. The ra...
Embodiment 2
[0032] Example 2: The preparation method of phenolic phosphonate polyols is: 150g triphenyl phosphite, 45g DEG, 0.1g 2,6-di-tert-butyl p-cresol and 0.01g tetrabutyl titanate Ratio feed in an autoclave to ensure the nitrogen environment in the autoclave, react at 135°C for 6 hours, cool down to 85°C, add 30g of formaldehyde, the reaction exotherms, the temperature gradually rises to 105°C, keep 100°C and continue to react for 4 hours. Remove unreacted formaldehyde, add 20g epoxy resin DYD-127, add ethylene oxide until the acid value drops below 5mgKOH / g, vacuum remove unreacted ethylene oxide, add 30g epoxy resin DYD-127 get the product. Phosphonate polyols with a phosphorus content of 5.45% were obtained after adsorption, filtration, distillation and other processes, and no hydrolysis was found during the storage period.
[0033] An environmentally friendly, harmless and highly flame-retardant polymer material for coal mine water plugging and reinforcement of coal rock mass. ...
Embodiment 3
[0034] Example 3: The preparation method of phenolic phosphonate polyols is: 170g triphenyl phosphite, 55g DEG, 0.1g 2,6-di-tert-butyl p-cresol and 0.01g tetrabutyl titanate Proportionally feed in an autoclave to ensure the nitrogen environment in the autoclave, react at 135°C for 6 hours, cool down to 85°C, add 35g of formaldehyde, the reaction is exothermic, the temperature gradually rises to 105°C, and continue to react at 100°C for 4 hours. Remove unreacted formaldehyde, add 40g epoxy resin DYD-127, add ethylene oxide until the acid value drops below 5mgKOH / g, vacuum remove unreacted ethylene oxide, add 35g epoxy resin DYD-127 get the product. Phosphonate polyols with a phosphorus content of 5.07% were obtained after adsorption, filtration, distillation and other processes, and no hydrolysis was found during the storage period.
[0035] An environmentally friendly, harmless and highly flame-retardant polymer material for coal mine water plugging and reinforcement of coal ...
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