Modified asphalt waterproof membrane

Abstract

The invention discloses a modified asphalt waterproof coiled material, which comprises a base layer B, an upper surface layer A bonded to the base layer B, and a lower surface layer C bonded under the base layer B, wherein the upper surface layer A and the base layer B are , and the base layer B and the lower surface layer C are bonded with each other by elastomer modified asphalt, the base layer B is made of glass fiber film, the upper surface layer A is made of polyethylene film, high temperature resistant polyester film or fine sand, and the lower layer The surface layer C is made of polyethylene film; the elastomer modified asphalt is prepared according to the following steps: after carbon nanotubes are hydroxylated, then acidified to obtain the second material; MAH-g-SBS is mixed with the second material and then ultrasonically Disperse and age to obtain carbon nanotube-modified SBS; after heating the asphalt, add carbon nanotube-modified SBS, nano-zinc oxide and other materials in sequence, and continue to heat up to obtain a mixed material; after the mixed material is oxidized and polished, then add talc powder to obtain elastomer-modified asphalt.

Description

technical field [0001] The invention relates to the technical field of waterproof coiled material, in particular to a modified asphalt waterproof coiled material. Background technique [0002] Waterproof membrane is mainly used in building walls, roofs, tunnels, roads, landfills, etc., to resist external rainwater and groundwater leakage, a flexible building material product that can be rolled into rolls, as an engineering basis There is no leakage connection with the building, which is the waterproof barrier of the whole project. [0003] The current waterproof membrane is mainly bituminous waterproof membrane, including a base made of polyester felt, glass fiber felt or glass fiber reinforced polyester felt, an asphalt layer dipped on the surface of the base, and the isolation of the upper and lower surfaces. Material layer composition. Among them, the change of the components of the asphalt layer will greatly affect the performance of the waterproof membrane, such as ...

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Problems solved by technology

However, this kind of performance parameter is still difficult to resist in some relatively harsh environments. For example, under the influence of colder air in the north, the temperature may be lower than minus 30°C, and the coil is easy to be brittle. , the local ambient temperature may be higher than 100°C, which may cause the tire base to burn; in addition, during the dip coating process of the asphalt layer material, the fluidity of the SBS modified asphalt is poor in the state of molten dip coating at about 190°C , which is not conducive to uniform and smooth dip-coating on the surface of the tire base; therefore, the current SBS modified asphalt waterproof membrane still needs to be improved

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