The invention belongs to the field of composite materials, and particularly relates to
coral sand breathable impermeable sand and a preparation method thereof.
Coral sand is generated by long-term evolution of marine microorganisms, belongs to biochemical
sedimentary rock, and is completely different from desert silica sand used for preparing breathable impermeable sand in the prior art, and a precedent for successfully preparing the breathable impermeable material from the
coral sand does not exist in the prior art. According to the invention,
coral sand particles, a filler, a laminating agent and an
adhesive are mixed according to a specific ratio, and the particle size of the
coral sand particles is limited to be 50 to 200 meshes, so that the
coral sand breathable impermeable sand withbreathable impermeable effects is obtained. And the filler can be selected from one or more of
cement,
styrene-acrylic
emulsion,
silicone acrylic
emulsion, kaolin and
rosin. The most preferable filleris a mixed filler of kaolin and
rosin, and when the filler is selected, the air permeability and the
water resistance of the obtained
coral sand breathable impermeable sand can be optimal.