The invention discloses a thermal-insulation paint for building external walls, which is prepared from the following raw materials in parts by weight: an
epoxy resin, bismaleimide, di-tert
alcohol propenyl borate,
foam glass, an
ethylene-
vinyl acetate copolymer, 3,3'-(p-phenyleneoxy)bis(2,4,5-triphenyl)
cyclopentadiene ketone, nano
alumina-
silica fiber, a dispersing agent, a thickener, a defoaming agent and a
wetting agent. The paint has the advantages of low
raw material loss, simple technique, hard paint film, favorable glossiness, high
impact resistance, low
cracking tendency, soft
tactile sensation, high decorating property, high
weather resistance, high scrub resistance, high
adhesive force, long service life, no special smell, no
heavy metals (such as mercury, lead and the like), no volatile
formaldehyde, synergistic actions among substance molecules, very high stability, high adhesiveness and high film formation efficiency, enhances the density of the
coating film, and improves the film formation quality. Thus, the film has the advantages of high
adhesive force, no bubble or crack, high compactness, high uniformity and the like.