A basement anti-seepage, flame-retardant and sound-insulating material

Abstract

The present invention relates to the field of building materials. In order to solve the problems that in the prior art, sound insulation materials do not have the ability of anti-seepage, and the sound insulation ability decreases after moisture absorption, and they are not suitable for basements, a basement anti-seepage, flame-retardant and sound insulation material is disclosed, which includes a base layer, a middle layer and a surface layer. The base layer is a permeable crystalline waterproof mortar; the middle layer is a foamed sound insulation cement mortar; the surface layer is a polymer-modified micro-cement waterproof mortar. This material can be used for basement protection and has the following beneficial effects: it has good waterproof, anti-seepage and flame-retardant effects, can effectively block the transmission of sound, and has the ability to absorb sound waves to reduce the echo phenomenon in the basement; the anti-seepage and sound insulation protection time of the material of the present invention is long.

Description

Technical Field

[0001] The present invention relates to the field of basement building materials, and particularly to a basement anti-leakage, flame-retardant and sound-insulating material. Background Art

[0002] To ensure the comfort of the living environment, sound insulation and sound absorption treatments need to be carried out on the building during construction and decoration. Most of the sound insulation and sound absorption materials used in buildings are porous materials, and the voids contained therein can enhance the attenuation effect on sound waves. For the basement structure, since it is relatively enclosed in the basement, it is easily troubled by echoes and porous materials are more needed to absorb sound waves. However, the basement is easily eroded by water vapor in the soil and has poor ventilation, which not only causes a relatively high humidity in the basement, but also allows a large amount of water vapor to enter the porous material, weakening the sound insulation and sound absorption effects and making the porous material prone to mildew.

[0003] For example, the "Fireproof Sound Insulation Mortar Material and Its Preparation Method" disclosed in the Chinese patent literature, with the publication number of CN113929407A, uses vitrified microspheres, rubber particles, and aluminum silicate fibers in the mortar to form a porous, loose, and breathable structure, so as to reflect and absorb sound waves in the sound propagation path to achieve a sound absorption effect. However, this material does not have a waterproof effect, and water vapor is likely to block the porous structure, so it is not suitable for use in the basement. Summary of the Invention

[0004] In order to overcome the problems of the existing sound insulation materials not having anti-seepage ability, the sound insulation ability decreasing after absorbing moisture, and not being suitable for basements, the present invention provides a basement anti-leakage, flame-retardant and sound-insulating material, which has good anti-seepage, flame-retardant and sound-insulating effects and can be used in basements to improve the comfort of basement use.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A basement anti-leakage, flame-retardant and sound-insulating material, comprising a base layer, a middle layer and a surface layer. By weight,

[0007] The base layer includes: 20-35 parts of portland cement, 10-20 parts of sulfoaluminate cement, 20-35 parts of silica sand, 0.1-0.3 parts of latex powder, 0.1-5 parts of crystallization agent, 0.2-0.5 parts of chelating agent, 0.05-0.15 parts of cellulose ether, 0.5-1.0 parts of water-reducing agent and 10-20 parts of water; the middle layer includes: 40-55 parts of portland cement, 10-15 parts of silica sand, 10-18 parts of hollow filler, 15-25 parts of rubber body, 0.1-0.5 parts of air-entraining agent, 0.2-0.5 parts of mineral fiber, 0.1-0.3 parts of water-reducing agent and 25-40 parts of water;

[0008] The surface layer comprises: 30-50 parts of white Portland cement, 30-50 parts of silica sand, 15-30 parts of polymer emulsion, 1-3 parts of flame retardant, 0.1-0.2 parts of water reducing agent, 0-2 parts of mineral pigment, and 25-45 parts of water.

[0009] The material of the present invention has a three-layer structure. The base layer is arranged in contact with the surface of the basement wall. The crystallization agent and chelating agent contained therein can enter the interior of the basement wall and generate crystals when encountering water, blocking the capillary structure of the wall, enhancing the waterproof and anti-seepage performance of the basement wall, and preventing moisture from seeping into the middle layer from the basement wall. Moreover, the base layer mortar uses a compound of Portland cement and sulfoaluminate cement, which can improve the density of the base layer mortar and also increase the curing speed, reducing the overall application construction time of the material; the air-entraining agent and hollow filler in the middle layer can introduce bubble structures into the mortar. The rubber body and mineral fibers have the effect of converting sound energy into heat energy through vibration, consuming sound energy. The combined action of the hollow filler, air-entraining agent, rubber body, and mineral fibers makes the middle layer have good sound insulation and sound absorption effects; the surface layer uses polymer-modified microcement, which has hydrophobic and flame retardant effects, preventing water vapor inside the basement from seeping into the middle layer through the surface layer. The color of the surface layer can be adjusted with mineral pigments and can be used to decorate the basement. And there is a density difference between the densities of the three-layer materials, so this structure also has the effect of improving the sound insulation and heat insulation performance of the overall material.

[0010] Preferably, the crystallization agent is one or more of tetraethyl orthosilicate, sodium silicate, calcium carbonate, calcium chloride, and ferric chloride.

[0011] Tetraethyl orthosilicate, sodium silicate, and ferric chloride can form a colloid, and calcium carbonate and calcium chloride provide calcium ions for the chelating agent.

[0012] Preferably, the chelating agent is two or more of polyphosphate, hexametaphosphate, gluconate, ethylenediaminetetraacetate, and ethylenediaminetetramethylene phosphate.

[0013] Using different chelating agents in combination can generate crystals of different sizes, which is beneficial to improving the blocking effect on voids.

[0014] Preferably, the latex powder is one or more of vinyl acetate-ethylene copolymer powder, acrylate-styrene copolymer powder, vinyl acetate-higher fatty acid vinyl ester copolymer powder, and vinyl acetate-acrylate-higher fatty acid vinyl ester terpolymer powder.

[0015] The latex powder is a water-soluble latex, which has the property of swelling upon water absorption, and can improve the compactness, toughness, and anti-seepage performance of the mortar. [[ID=2,3]]

[0016] Preferably, the polymer emulsion is obtained by mixing epoxy resin, organosilicon-modified acrylic resin, polyether-modified polysiloxane, non-ionic surfactant, curing agent, and water in a mass ratio of 50:(30 - 50):(5 - 15):(2 - 25):(6 - 15):(50 - 100).

[0017] The non-ionic surfactant in the polymer emulsion is used to improve the dispersion of the resin in the emulsion. After the epoxy resin, organosilicon-modified acrylic resin, and polyether-modified polysiloxane are compounded, they have good toughness and hydrophobic effects, which can improve the density, mechanical strength, and waterproofness of the surface layer.

[0018] Preferably, the water reducing agent is one or more of polycarboxylate water reducing agent, amino sulfonate water reducing agent, and naphthalene water reducing agent.

[0019] Preferably, the hollow filler is one or more of hollow glass microspheres, hollow silica microspheres, and hollow ceramic microspheres.

[0020] Preferably, the air-entraining agent is one or more of rosin air-entraining agent and saponin air-entraining agent.

[0021] Preferably, the cellulose ether is a non-ionic water-soluble cellulose ether.

[0022] More preferably, the cellulose ether is one or more of hydroxypropyl methyl cellulose, methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and hydroxyethyl methyl cellulose.

[0023] Preferably, the flame retardant is a phosphorus-nitrogen flame retardant.

[0024] Preferably, the thickness of the base layer is 1 - 5 mm, the thickness of the middle layer is 5 - 15 mm, and the thickness of the surface layer is 2 - 5 mm.

[0025] Therefore, the present invention can be used for basement protection and has the following beneficial effects: it has good waterproof, anti-seepage, and flame retardant effects, can effectively block the transmission of sound, and has the ability to absorb sound waves to reduce the echo phenomenon in the basement; the anti-seepage and sound insulation protection time of the materials of the present invention is long. Specific Embodiments

[0026] The following further describes the present invention in combination with specific implementation methods.

[0027] In the following implementation methods, the vinyl acetate-ethylene copolymer powder is purchased from Wuhan Jixin Yibang Biotechnology Co., Ltd.; hydroxypropyl cellulose and polycarboxylate water reducer are purchased from Shanghai Zengye Industry Co., Ltd.; high-efficiency naphthalene-based water reducer is purchased from Jinan Shunyang Chemical Technology Co., Ltd.; hollow glass microspheres are purchased from Wenzhou Weizhen New Materials Co., Ltd.; sepiolite fiber is purchased from Huizhong Mineral Products Co., Ltd., Lingshou County; APP flame retardant is purchased from Shouguang Pure Chemical Co., Ltd.; E44 epoxy resin is purchased from Nantong Xingchen Synthetic Materials Co., Ltd.; water-based organosilicon-modified acrylic resin, polyether-modified polydimethylsiloxane, OB-2 surfactant and HX-8001 water-based epoxy resin curing agent are purchased from Wuhan Huaxiang Kejie Biotechnology Co., Ltd.

[0028] Example 1

[0029] A basement anti-seepage, flame-retardant and sound-insulating material, including a base layer, a middle layer and a surface layer stacked in sequence,

[0030] The base layer is 2 mm and is obtained by stirring and mixing the following raw materials: 30 parts of Portland cement P.II, 10 parts of sulfoaluminate cement 525, 35 parts of fine silica sand, 0.3 part of vinyl acetate-ethylene copolymer powder, 1 part of sodium silicate, 3 parts of calcium chloride, 0.2 part of sodium hexametaphosphate, 0.3 part of sodium ethylenediaminetetraacetate, 0.15 part of hydroxypropyl cellulose, 0.5 part of polycarboxylate water reducer and 15 parts of water;

[0031] The middle layer is 10 mm and is obtained by stirring and mixing the following raw materials: 40 parts of Portland cement P.II, 15 parts of fine silica sand, 10 parts of hollow glass microspheres, 25 parts of rubber particles (particle size 1-2 mm), 0.5 part of sodium rosinate air-entraining agent, 0.2 part of sepiolite fiber, 0.1 part of polycarboxylate water reducer and 25 parts of water;

[0032] The surface layer is 3 mm and is obtained by stirring and mixing the following raw materials: 50 parts of white Portland cement P.W42.5, 30 parts of fine silica sand, 20 parts of polymer emulsion, 3 parts of APP flame retardant, 0.2 part of polycarboxylate water reducer and 25 parts of water, wherein the polymer emulsion is obtained by mixing E44 epoxy resin, water-based organosilicon-modified acrylic resin, polyether-modified polydimethylsiloxane, OB-2 surfactant, HX-8001 water-based epoxy resin curing agent and water in a mass ratio of 50:30:10:10:6:80;

[0033] Each layer is applied to the surface of the cement wall in sequence, and the next layer is applied after each layer is cured.

[0034] Example 2

[0035] A basement anti-seepage, flame-retardant and sound-insulating material, which is different from Example 1 in that the base layer is 1 mm, the middle layer is 5 mm, and the surface layer is 2 mm.

[0036] Example 3

[0037] A basement anti-seepage, flame-retardant and sound-insulating material, which is different from that of Example 1 in that the base layer is obtained by stirring and mixing the following raw materials: 20 parts of Portland cement P.II, 20 parts of sulfoaluminate cement 525, 20 parts of fine silica sand, 0.3 part of vinyl acetate-ethylene copolymer powder, 1 part of ferric chloride, 3 parts of calcium chloride, 0.2 part of ethylenediaminetetra(methylene phosphonic acid) sodium salt, 0.2 part of sodium polyphosphate, 0.15 part of hydroxypropyl cellulose, 0.5 part of high-efficiency naphthalene-based water reducer and 10 parts of water.

[0038] Example 4

[0039] A basement anti-seepage, flame-retardant and sound-insulating material, which is different from that of Example 1 in that the surface layer is obtained by stirring and mixing the following raw materials: 30 parts of white Portland cement P.W42.5, 20 parts of fine silica sand, 30 parts of polymer emulsion, 3 parts of APP flame retardant, 0.2 part of polycarboxylate water reducer, 1 part of iron oxide and 25 parts of water, wherein the polymer emulsion is obtained by mixing E44 epoxy resin, waterborne organosilicon-modified acrylic resin, polyether-modified polydimethylsiloxane, OB-2 surfactant, HX-8001 waterborne epoxy resin curing agent and water in a mass ratio of 50:50:15:10:15:100.

[0040] Comparative Example 1

[0041] A basement anti-seepage, flame-retardant and sound-insulating material, which is different from that of Example 1 in that it does not contain a base layer and the thickness of the middle layer is 12 mm.

[0042] Comparative Example 2

[0043] A basement anti-seepage, flame-retardant and sound-insulating material, which is different from that of Example 1 in that it does not contain a surface layer and the thickness of the middle layer is 13 mm.

[0044] Comparative Example 3

[0045] A basement anti-seepage, flame-retardant and sound-insulating material, which is different from that of Example 1 in that the chelating agent in its base layer is 0.5 part of ethylenediaminetetraacetic acid sodium salt.

[0046] Comparative Example 4

[0047] A basement anti-seepage, flame-retardant and sound-insulating material, which is different from that of Example 1 in that its base layer does not contain sulfoaluminate cement 525 but 40 parts of Portland cement P.II.

[0048] Comparative Example 5

[0049] A basement anti-seepage, flame-retardant and sound-insulating material, which is different from that of Example 1 in that the polymer emulsion on its surface layer is obtained by mixing E44 epoxy resin, waterborne organosilicon-modified acrylic resin, OB-2 surfactant, HX-8001 waterborne epoxy resin curing agent and water in a mass ratio of 60:30:10:6:80.

[0050] Detect the fire rating, sound insulation ability, sound absorption ability, back anti-seepage ability and front waterproof ability of the materials obtained in the above examples and comparative examples. The detection reference standards are "GB 8624-2012 Classification of the burning behavior of building materials and products", "GB / T19889.6-2005 Acoustics - Measurement of sound insulation in buildings and of building elements - Part 6: Laboratory measurement of impact sound insulation of floors", "GB / T19889.8-2006 Acoustics - Measurement of sound insulation in buildings and of building elements - Part 8: Laboratory measurement of the improvement of impact sound insulation of heavyweight standard floor coverings", "GB 18445-2012 Cement-based permeable crystalline waterproof materials" and "GB 10299-1988 Test method for hydrophobicity of thermal insulation materials". The test results are shown in the following table.

[0051] It can be seen from the data in the above table that the material of the present invention has good anti-seepage, sound insulation and sound absorption effects, and the surface of the material of the present invention also has good waterproof performance.

[0052] Comparing Comparative Examples 1-2 with Example 1, it can be seen that the base layer of the material of the present invention has an anti-seepage effect, the surface layer has a waterproof and flame-retardant effect, and the base layer and the surface layer are denser than the middle layer. Therefore, both of them have a certain sound insulation performance. When the base layer or the surface layer is missing, although the sound absorption effect is enhanced with the increase of the thickness of the middle layer, the sound insulation effect is weakened.

[0053] It can be seen from Comparative Example 3 that when only one chelating agent is used, its anti-seepage performance is weaker than that of Example 1 using two chelating agents; the test results of Comparative Example 4 show that the density of the mortar increases after the mixed use of Portland cement and sulfoaluminate cement, which can improve the sound insulation performance.

[0054] It can be seen from Comparative Example 5 that polyether-modified polysiloxane in the polymer emulsion of the surface layer has the effect of enhancing the hydrophobicity of the surface layer.

Claims

1. A basement anti-seepage, flame-retardant and sound-insulating material, characterized in that, It includes a base layer, a middle layer and a surface layer. By weight, The base layer includes: 20 - 35 parts of portland cement, 10 - 20 parts of sulfoaluminate cement, 20 - 35 parts of silica sand, 0.1 - 0.3 part of latex powder, 0.1 - 5 parts of crystallization agent, 0.2 - 0.5 part of chelating agent, 0.05 - 0.15 part of cellulose ether, 0.5 - 1.0 part of water-reducing agent and 10 - 20 parts of water; The middle layer includes: 40 - 55 parts of portland cement, 10 - 15 parts of silica sand, 10 - 18 parts of hollow filler, 15 - 25 parts of rubber body, 0.1 - 0.5 part of air-entraining agent, 0.2 - 0.5 part of mineral fiber, 0.1 - 0.3 part of water-reducing agent and 25 - 40 parts of water; The surface layer includes: 30 - 50 parts of white portland cement, 30 - 50 parts of silica sand, 15 - 30 parts of polymer emulsion, 1 - 3 parts of flame retardant, 0.1 - 0.2 part of water-reducing agent, 0 - 2 parts of mineral pigment and 20 - 40 parts of water.

2. The basement anti-seepage, flame-retardant and sound-insulating material according to claim 1, characterized in that, The crystallization agent is one or more of tetraethyl orthosilicate, sodium silicate, calcium carbonate, calcium chloride and ferric chloride.

3. A basement anti-seepage, flame-retardant and sound-insulating material according to claim 1 or 2, characterized in that, The chelating agent is two or more of polyphosphate, hexametaphosphate, gluconate and ethylenediaminetetraacetate.

4. A basement leak-proof, flame-retardant and sound-insulating material according to claim 1, characterized in that, The latex powder is one or more of vinyl acetate-ethylene copolymer powder, acrylate-styrene copolymer powder, vinyl acetate-higher fatty acid vinyl ester copolymer powder and vinyl acetate-acrylate-higher fatty acid vinyl ester terpolymer powder.

5. A basement leak-proof, flame-retardant and sound-insulating material according to claim 1, characterized in that, The polymer emulsion is obtained by mixing epoxy resin, organosilicon-modified acrylic resin, polyether-modified polysiloxane, non-ionic surfactant, curing agent and water in a mass ratio of 50:(30 - 50):(5 - 15):(2 - 25):(6 - 15):(50 - 100).

6. A basement leak-proof, flame-retardant and sound-insulating material according to claim 1 or 4 or 5, characterized in that The water-reducing agent is one or more of polycarboxylate water-reducing agent, amino sulfonate water-reducing agent and naphthalene series water-reducing agent.

7. The basement leakage-proof, flame-retardant and sound-insulating material according to claim 1, characterized in that, The hollow filler is one or more of hollow glass microspheres, hollow silica microspheres and hollow ceramic microspheres.

8. A basement anti-seepage, flame-retardant and sound-insulating material according to claim 1 or 7, characterized in that, The air-entraining agent is one or more of rosin-based air-entraining agent and saponin-based air-entraining agent.

9. The basement anti-seepage, flame-retardant and sound-insulating material according to claim 1, wherein, The cellulose ether is a non-ionic water-soluble cellulose ether.

10. A basement anti-seepage, flame-retardant and sound-insulating material according to claim 1 or 5, characterized in that, The thickness of the base layer is 1 - 5 mm, the thickness of the middle layer is 5 - 15 mm, and the thickness of the surface layer is 2 - 5 mm.

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