Polyurethane elastic concrete and preparation method thereof
A polyurethane elastic and concrete technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of affecting driving comfort, poor high and low temperature resistance, insufficient waterproof ability, etc., to eliminate car jumping phenomenon, low porosity, and the effect of improving bulk performance
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Embodiment 1
[0035] (1) The multi-walled carbon nanotubes are acidified with mixed acid to carboxylate their surface end groups to obtain carboxylated multi-walled carbon nanotubes.
[0036] (2) Weigh 0.3 parts of carboxylated multi-walled carbon nanotubes, add 30 parts of diphenylmethane diisocyanate (MDI) and 57 parts of dehydrated polyether polyols successively, and ultrasonically disperse for 30 min while stirring under nitrogen protection, The temperature is heated to 80° C., and the reaction is continued for 4 hours to obtain a multi-walled carbon nanotube-polyisocyanate prepolymer composite component. After cooling, continue to add 13 parts of dibutyl phthalate (DBP), mix and stir evenly, that is, component A.
[0037] (3) Weigh 60 parts of dehydrated polyoxypropylene glycol, 0.3 part of carboxylated multi-walled carbon nanotubes and 3 drops of 4-dimethylaminopyridine, mix uniformly under nitrogen protection, and ultrasonically disperse for 30 minutes, then heat up to 65° C. , and ...
Embodiment 2
[0042] (1) using mixed acid to acidify graphene to carboxylate its surface end groups to obtain carboxylated graphene.
[0043] (2) take by weighing 0.2 parts of carboxylated graphene, add 38 parts of isophorone diisocyanate (IPDI) and 52 parts of dehydrated polyester polyols successively, ultrasonically disperse 30min while stirring under nitrogen protection, and heat up to 80° C., continue to react for 4 h to obtain the graphene-polyisocyanate prepolymer composite component. After cooling, continue to add 10 parts of dioctyl phthalate (DOP), mix and stir evenly, that is, component A.
[0044] (3) Weigh 75 parts of dehydrated polyoxypropylene glycol, 0.2 part of carboxylated graphene and 4 drops of 4-dimethylaminopyridine, mix them evenly under nitrogen protection, and ultrasonically disperse for 30min, heat up to 65°C, and react by reflux. 12h, the graphene-polyoxypropylene glycol composite component was obtained. Continue to add 10 parts of 3,3'-dichloro-4,4'-diaminodiphe...
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