Underground space polymer spray film waterproof material and preparation method thereof

Abstract

The invention discloses an underground space polymer spray film waterproof material and a preparation method thereof. The underground space polymer spray film waterproof material is prepared from thefollowing raw materials in parts by weight: 5-80 parts of macromolecular emulsion powder, 20-50 parts of filler, 10-50 parts of a curing agent and 1-5 parts of a rheological additive. According to theunderground space polymer spray film waterproof material, a self-crosslinked macromolecular emulsion is formed by using a special cross-linking agent; the water resistance of the emulsion is improved; a post-crosslinking technology is introduced through a spray powder drying process, so that the water resistance of the formed film is further improved; special protective glue is firstly used as aprotection agent for drying spray powder; the stability of the spray powder is improved; the spraying temperature is increased; the solubility and the adhesion of the emulsion powder are further improved; the polymer spray film waterproof material has high strength, high adhesion, high seepage resistance, flame resistance, high water resistance and high storage stability; the production process ofthe underground space polymer spray film waterproof material is simple, easily controllable, green and environmentally friendly.

Description

technical field [0001] The invention belongs to the field of building waterproofing, and more specifically relates to a polymer spray film waterproofing material for underground space and a preparation method thereof. Background technique [0002] In infrastructure construction underground projects and tunnels, there are high requirements for waterproof and anti-seepage. At present, underground projects basically use EVA waterproof boards, HDPE pre-paved anti-adhesive films, and acrylate spray films. From the actual waterproof effect Look, to a certain extent, the anti-seepage problem of underground engineering has been solved. However, in terms of function, due to the complicated construction and many welds, there are many weak links, and because the waterproof board cannot be bonded with concrete, it will lead to the possibility of water leakage. , and although the HDPE self-adhesive adhesive film is bonded to the secondary lining, the hot melt adhesive on its surface must...

AI Technical Summary

Problems solved by technology

[0002] In infrastructure construction underground projects and tunnels, there are high requirements for waterproof and anti-seepage. At present, underground projects basically use EVA waterproof boards, HDPE pre-laid anti-adhesive films, and acrylate spray films. From the actual waterproof effect Look, the anti-seepage problem of underground engineering has been solved to a certain extent. However, in terms of function, due to the complicated construction and many welds, there are many weak links, and because the waterproof board cannot be bonded with concrete, it will lead to the possibility of water leakage. , and although the HDPE self-adhesive adhesive film is bonded to the secondary lining, the hot melt adhesive on its surface must have good durability to achieve this, otherwise there will be hidden dangers of debonding, which may eventually lead to serious seepage of the tunnel. leak

[0003] The acrylate spray film material can only play a good role in the presence of water. Because its principle is water absorption and swelling, the mechanical properties will decrease after water absorption and saturation, and as a preventive waterproof layer, it will crack when it dries, resulting in loss of waterproof effect. , there is a big defect

[0004] Therefore, there are still many defects that have not been overcome in the existing waterproof materials.

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