The invention discloses a preparation method of an environment-friendly
stain-resistant
sponge brick. The preparation method comprises the following steps: adding water into a mixture of
cement, a aggregate and middle sand, and carrying out mixing by stirring to obtain a base material; then adding an additive A and an additive B into the prepared base material for mixing, carrying out vibration
compression molding on the material subjected to uniform mixing and stirring, carrying out demolding, carrying out
coating with
pigment, and naturally carrying out curing for 27 days to prepare a brickbody; and then
coating the prepared
brick body with a
stain-resistant
coating, and carrying out standing for 24 hours at normal temperature to obtain a finished product of the environment-friendly
stain-resistant
sponge brick. The additive A comprises the following raw materials:
ferrous sulfate,
magnesium fluosilicate,
sodium silicate and porous
calcium phosphate, and the additive B comprises thefollowing raw materials:
polypropylene (PE) fibers, polybutenoic acid, 1-boc-3-(amino)
azetidine, 2,2-di-(tert-butyl peroxy)
propane and
disodium laureth sulfosuccinate. The environment-friendly stain-resistant
sponge brick provided by the invention can be used for constructing sponge cities, is
environmentally friendly, and is resistant to stain, and meanwhile,
soil humidity can be kept.