Organic/inorganic hybrid injection filling material and preparation method thereof
A kind of grouting filling material and inorganic technology, applied in the field of modified polymer materials, can solve the problems of expensive use, poor mechanical properties, low reaction heat release, etc., and achieve high foaming ratio, good flame retardancy, and low viscosity Effect
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[0052] Example 1. Preparation of organic-inorganic hybrid grouting filling material
[0053] In the reaction kettle, first add 95wt% sodium silicate, start stirring at 25°C, slowly add 5wt% 2,4,6-tris[(dimethylamino)methyl]phenol dropwise, after 1 hour dropwise addition, continue stirring After half an hour, discharging and packaging to obtain component A.
[0054] In the sandwich reactor, first add 15wt% of low unsaturation polyether polyol MN-700 (polypropylene oxide ether triol with a number average molecular weight of 700) at a temperature of 105~110℃ (during the reaction) The temperature is fluctuating), dehydration for 2.5 hours under the condition of -0.1MPa vacuum, cooling to 50℃, adding 70wt% of polymethylene polyphenyl isocyanate M20S and 2wt% of 1,4-butanediol, and Keep the reaction for 30 minutes, raise the temperature to 72°C, keep the temperature constant, react for 1 hour, and lower the temperature to 40°C, add 10wt% dibutyl phthalate and 3wt% of additives (2.4wt%AK...
Example Embodiment
[0056] Example 2. Preparation of organic-inorganic hybrid grouting filling material
[0057] In the reaction kettle, first add 93wt% potassium silicate, start stirring at 25°C, slowly add 7wt% pentamethyldiethylenetriamine dropwise, finish the dripping in 1 hour, continue stirring for half an hour, discharge, and package to obtain the components A.
[0058] In the sandwich reactor, first add 25wt% of polyether polyol DL-1000 (polypropylene oxide ether glycol with a number average molecular weight of 1000) at a temperature of 105~110℃ (the temperature fluctuates during the reaction) ), vacuum degree -0.08Mpa, dehydration for 2.5 hours, cooling to 45°C, adding 60wt% diphenylmethane diisocyanate, and keeping the reaction for 20min, heating to 80°C, keeping the temperature constant, reacting for 2 hours, cooling to At 50℃, add 13wt% diisononyl phthalate and 3wt% additives (2.5wt% AK-8803 foam stabilizer, 0.2wt% antioxidant 168 and 0.3wt% UV-P), and mix well , Discharge, filter, and p...
Example Embodiment
[0060] Example 3. Preparation of organic-inorganic hybrid grouting filling material
[0061] In the reaction kettle, first add 90wt% sodium silicate, start stirring at 25°C, slowly add 10wt% 1,3,5-tris(dimethylaminopropyl)hexahydrotriazine dropwise, and finish the addition in 1 hour. Continue to stir for half an hour, discharging, and packaging to obtain component A.
[0062] In the sandwich reactor, first add 10wt% of polyether polyol DL-400 (polypropylene oxide ether glycol with a number average molecular weight of 400) at a temperature of 105~110℃ (the temperature fluctuates during the reaction) ), vacuum degree -0.09Mpa, dehydration for 3 hours, cooling to 40°C, adding 75wt% polymethylene polyphenyl isocyanate PM-200 and 3wt% hexanediol, and keeping the reaction for 30min, heating to 70°C, Keep the temperature unchanged, react for 1.5 hours, cool to 40°C, add 10wt% diethylene glycol butyl ether acetate and 2wt% additives (1.5wt% AK-8805 foam stabilizer and 0.5wt% antioxidant 2...
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