The invention discloses a production technology for physical foaming
cement insulation boards, and belongs to the field of
building insulation materials. The technology comprises the steps that 1,
general purpose portland cement, a composite
aluminosilicate mineral admixture and a composite additive are metered and prestirred to obtain
solid materials, and water is added for
wet grinding to obtain non-bleeding unstratified
slurry; 2,
fiber is added into the
slurry, and then high-speed stirring and dispersion are performed; then, foams with the
diameter smaller than 0.3 mm are added to form foam bodies; 3, the foams obtained in the second step are molded by means of a mold, maintained and demolded and then
cut into boards, high-molecular
polymer waterproof
lotion uniformly permeates microholes of the boards, and artificial
drying or natural air-
drying is performed to obtain the physical foaming
cement insulation boards. According to the technology, high-pressure
permeation equipment is adopted for enabling the high-molecular
polymer waterproof
lotion to rapidly and uniformly permeate the microholes of the boards,
polymer inside the
lotion will form films on the walls of the microholes after artificial
drying or natural air-drying, passages of pores are blocked, the water
absorption rate of the insulation boards can be effectively lowered, the
toughness and strength of the boards can be improved, and board cracks are avoided.