High-performance spray-applied waterproof acrylate material and preparation method thereof

Abstract

The invention discloses a high-performance spray-applied waterproof acrylate material and a preparation method thereof. The high-performance spray-applied waterproof acrylate material is prepared fromthe following raw materials: 40 to 95 parts of an aqueous acrylate solution, 1 to 30 parts of a compound containing two C=C double bonds which are connected via a flexible carbon chain, 0.5 to 10 parts of an oxidizing agent, 0.5 to 10 parts of a reducing agent, 0 to 10 parts of pigment and 0 to 10 parts of a cosolvent. The waterproof acrylate material of the invention can effectively overcome theproblem that a film formed by the spray-applied waterproof acrylate material cracks at low humidity from molecular structure, can retain moisture in a long period of time, and is applicable to waterproof projects like subways, urban underground utility tunnels, tunnels and underground constructions.

Description

technical field [0001] The invention belongs to the field of waterproof materials, and more specifically relates to a high-performance acrylate spray film waterproof material and a preparation method thereof. Background technique [0002] Waterproof materials are used as building envelopes to prevent the penetration of rainwater, snowwater and groundwater; to prevent the erosion of moisture, steam and other harmful gases and liquids in the air; as a separation structure to prevent seepage of water supply and drainage. These anti-penetration, leakage and erosion materials are collectively referred to as waterproof materials. There are many kinds of waterproof materials, and new waterproof materials emerge in endlessly. [0003] Japanese Patent No. 61-19683 discloses a film-forming component using acrylic acid or its derivatives, and simultaneously contains oxidizing agents, reducing agents, aggregate filling components and auxiliary components, and water, etc. as film-formin...

AI Technical Summary

Problems solved by technology

Wherein CN1803948A reports that the tensile strength of the sprayed film material formed by acrylate is low, especially the strength is reduced under the alkaline environment, which cannot meet the engineering needs, so the degree of crosslinking is enhanced by adding 300-600 mesh light magnesium oxide, thereby increase material strength

However, simply increasing the strength of the material can alleviate the problem of easy cracking of the material, but it cannot fundamentally solve the problem of brittleness of the material.

[0004] When the relative humidity of the construction environment is lower than 90%, the waterproof coating layer formed by the acrylic spray film material on the treated base surface is relatively brittle, and it is easy to cause the waterproof layer to fail due to structural deformation and damage.

CN105315737 discloses a magnesium acrylic spray film waterproof material containing continuous basalt fibers for the cracking of the coating film of the acrylate spray film material at low humidity, but this patent document does not fundamentally solve the problem that the material itself suffers from dehydration in a dry environment. This leads to the brittleness of the material, and adding continuous basalt fiber to the liquid material of the acrylic spray film material, because the continuous basalt fiber has a long particle size and is randomly distributed in the liquid material, it will easily cause blockage of the spraying equipment to a certain extent. Affect construction

Acrylic spray film materials are placed under low humidity for a period of time, and the coating film is easy to crack, which has seriously restricted the application and development of acrylate spray film materials

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