A self-adhesive polymer pre-laid waterproof membrane and its preparation method

Abstract

The invention relates to a self-sticking macromolecular pre-laid waterproof roll material and a preparation method. The waterproof roll material comprises a sheet macromolecular base material layer, a hot-melt pressure-sensitive adhesive layer formed on the sheet macromolecular base material layer and an anti-adhesion layer arranged on the hot-melt pressure-sensitive adhesive layer, wherein the anti-adhesion layer is anti-adhesion mineral particles, and the anti-adhesion mineral particles are formed by adding an additive to special white cement, performing even mixing and then performing hydration curing and smashing. The anti-adhesion mineral particles adopted by the waterproof roll material are artificially synthesized mineral particles and have larger specific surface area than natural mullite sand, has strong bonding power with a hot-melt pressure-sensitive adhesive and has stronger antiultraviolet capability. The particles have good integration with post-cast concrete, the mineral particles have a secondary hydration function, concrete and the mineral particles can form an effective integral structure after the roll material is cast with the concrete, accordingly water is prevented from permeating into a bonding interface of the concrete and the mineral particles from gaps between the mineral particles and the concrete, and a water breakthrough phenomenon is effectively controlled.

Description

technical field [0001] The invention belongs to the technical field of waterproof coiled materials, and in particular relates to a self-adhesive polymer pre-laid waterproof coiled material and a preparation method thereof. Background technique [0002] With the development of Chinese society and the acceleration of urbanization, more and more cities have begun to develop and utilize underground space resources, such as underground commercial facilities, underground parking stations, underground reservoirs, warehouses, subways, underground streets, underground passages, underground pipes, etc. Corridor project and so on. However, the effects of water channeling, leakage and settlement in underground waterproofing projects are still a major problem. How to provide direct full-bonded waterproofing protection for structural concrete is extremely challenging. [0003] In recent years, foreign advanced pre-paved anti-adhesive materials have been used tentatively in China, and th...

AI Technical Summary

Problems solved by technology

[0004] 1. Modified asphalt adhesives have poor high temperature and low temperature resistance, and construction is troublesome in summer and winter;

[0005] 2. There is no protective layer on the surface of the coiled material, and the self-adhesive adhesive in the coiled material is easily horny and cannot be bonded to the post-cast concrete when exposed to sunlight;

[0006] 3. There is no treatment on the surface of the coil, and the workers stick their feet when binding the steel bars on the surface of the coil;

[0007] 4. The cohesive strength of the modified asphalt adhesive is low, resulting in low bonding and peeling strength between the coiled material and the post-cast concrete

[0009] In the prior art, the UV aging resistance of the self-adhesive polymer membrane anti-sticking layer is poor, and the peeling strength between the coiled material and the post-cast concrete is not good, especially after the water immersion treatment, the anti-sticking layer is mostly made of natural Molai sand or Quartz sand has poor compatibility with post-cast concrete. During wet curing, water can easily penetrate into the interface between sand and concrete, resulting in low peel strength with post-cast concrete.

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