The invention relates to a sound-absorbing
radiation protective paint, which comprises the following components in percentage by weight: 30 to 38 percent of porous
modified starch, 5.0 to 9.5 percent of
styrene-acrylic latex
emulsion, 33 to 41 percent of barite, 0.5 to 1 percent of
iron oxide, 0.25 to 1 percent of
sodium polycarboxylate dispersant, 0.01 to 1 percent of brightening agent, 1.0 to 6 percent of
titanium white, 0.5 to 1 percent of
defoamer, 0.01 to 1 percent of
mildew preventive, 13 to 18 percent of water, 0.4 to 1 percent of
ethylene glycol, 0.3 to 1 percent of film-forming auxiliary agent, 0.005 to 1 percent of anti-freeze agent, 0.5 to 1 percent of
graphite, 1 to 3 percent of
hydroxyethyl cellulose and 0.20 to 1 percent of
thickening agent. A preparation method of the sound-absorbing
radiation protective paint comprises the steps of: (a) premixing, namely stirring 1 / 2 water, the
sodium polycarboxylate dispersant, 1 / 2
defoamer, the
mildew preventive, the
thickening agent, the
hydroxyethyl cellulose and the brightening agent at
low speed to form
colloidal solution; (b) dispersing and
grinding, namely adding the
titanium white, the barite, the
graphite and the
iron oxide into the
colloidal solution and stirring the solution at high speed to prepare uniform
sizing agent; (c) paint mixing, namely adding crylic acid
emulsion, the film-forming auxiliary agent and the anti-freeze agent into the
sizing agent, uniformly stirring the
sizing agent, then dividing the porous
modified starch into 1 to 5 parts, and adding the porous
modified starch by 1 to 5 times into the mixture for low-speed and uniformly stirring the mixture; and (d) packaging the resulting product.