Indoor waterproof decorative colored waterproof mortar for building outer wall

Abstract

The invention belongs to the technical field of mortar. The invention provides indoor waterproof decorative colored waterproof mortar for a building outer wall. Comprising the following components: 2.3 to 2.5 parts of polypropylene fiber, 65 to 68 parts of cement, 265 to 280 parts of sand, 38 to 43 parts of water, 1.5 to 1.6 parts of a water reducing agent, 5 to 7 parts of fly ash, 25 to 28 parts of slag, 1 to 2 parts of iron oxide, 1.5 to 2 parts of white carbon black, 1.6 to 1.8 parts of organic montmorillonite modified paraffin emulsion and 1.8 to 2.0 parts of cyclodextrin modified vermiculite. According to the invention, the splitting tensile strength and aging resistance of the prepared concrete mortar can be improved at the same time.

Description

Technical Field

[0001] This invention belongs to the field of mortar technology, specifically relating to colored waterproof mortar for interior and exterior waterproofing of buildings. Background Technology

[0002] Concrete mortar refers to a general term for engineering composite materials in which cementing materials bind aggregates together to form a whole. Generally speaking, concrete uses cement as a cementing material, sand and gravel as aggregates, and water in a specific ratio, then mixes them to form cement concrete, which is commonly used in construction and civil engineering. Concrete is one of the most widely used building materials in the world. Concrete often faces the problem of cracking during use: for example, in large-scale water conservancy projects, concrete is constantly exposed to a humid environment and bears enormous water pressure; its crack resistance directly affects the safety and durability of the project.

[0003] Existing technologies utilize fiber incorporation into concrete mortar to improve the crack resistance of concrete structures. Commonly used fibers in concrete structures include steel fibers, polypropylene fibers, and blends of several types. Among these, polypropylene fibers are particularly effective in reducing plastic cracks in concrete. For example, Chinese invention patent application CN115417643A discloses a high-crack-resistant fiber-reinforced concrete, prepared from the following components by weight: 6-8 parts polypropylene fibers, 130-150 parts water, 320-340 parts P.O42.5 cement, 550-570 parts sand, 1200-1400 parts coarse aggregate, 6-7 parts water-reducing agent, and 0.2-0.5 parts dispersant. By adding polypropylene fibers to the concrete, the crack resistance and durability of the concrete are enhanced, thus improving its crack resistance.

[0004] However, the poor adhesion between polypropylene fibers and the concrete matrix makes them easy to be pulled out under stress, which limits the fiber's ability to enhance the splitting tensile strength of concrete. Furthermore, polypropylene fibers have poor UV resistance. Long-term exposure to ultraviolet light will cause molecular chain breakage, weakening the concrete's crack control ability and thus reducing the retention rate of the splitting tensile strength of the concrete, i.e., reducing its aging resistance. Summary of the Invention

[0005] To address the problems existing in the background technology, the present invention provides a colored waterproof mortar for interior waterproofing of building exterior walls, which can simultaneously improve the splitting tensile strength and aging resistance (split tensile strength retention rate) of the prepared concrete mortar.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A colored waterproof mortar for interior and exterior waterproofing of buildings, comprising the following components by weight: 2.3-2.5 parts polypropylene fiber, 65-68 parts cement, 265-280 parts sand, 38-43 parts water, 1.5-1.6 parts water-reducing agent, 5-7 parts fly ash, 25-28 parts slag, 1-2 parts iron oxide, 1.5-2 parts silica, 1.6-1.8 parts organomontmorillonite modified paraffin emulsion, and 1.8-2.0 parts cyclodextrin modified vermiculite.

[0008] Preferably, the preparation method of the organomontmorillonite-modified paraffin emulsion is as follows:

[0009] A1. Disperse 2g of montmorillonite in 120-130g of deionized water, let stand for 24h, then take the upper suspension and pour it into the first flask, then add 0.3-0.4g of organic intercalating agent, stir at 450-550rpm for 3.5-4h at 80-85℃ to obtain an organic montmorillonite solution.

[0010] A2. Add 10-10.5g of paraffin wax to the second flask at 80-82℃. After melting, stir at 200-220rpm for 10-15min. Then add 0.25-0.3g of emulsifier and the organomontmorillonite solution obtained in A1. Stir at 450-550rpm for 30-35min, and then homogenize at 50-70MPa 3-5 times to obtain the organomontmorillonite modified paraffin wax emulsion.

[0011] Preferably, the organic intercalating agent is bis(dodecyl)dimethylammonium bromide.

[0012] Preferably, the emulsifier includes Span80 and Tween-80, and the mass ratio of the two is (1-1.2):1.

[0013] Preferably, the preparation method of the cyclodextrin-modified vermiculite is as follows:

[0014] B1. Vermiculite (20-40 mesh) is sequentially acidified, washed, dried, and ground to obtain pretreated vermiculite;

[0015] B2. Add 11g of β-cyclodextrin and 14.6g of KH560 to 100mL of DMF solution, stir to dissolve, add 0.4g of sodium hydroxide, heat to 60℃ and stir to react for 10h, cool, take out the unreacted sodium hydroxide solid, add 200-250mL of acetone and stir, a white precipitate will precipitate, filter, wash with acetone several times to obtain a white powder, dry to obtain cyclodextrin derivative;

[0016] B3. Dissolve 0.5-0.55g of the cyclodextrin derivative obtained from B2 in 10L of deionized water, adjust the pH to 4.0-5.0 with glacial acetic acid, hydrolyze with methanol solution at 35℃, add 0.5g of the pretreated vermiculite obtained from B1, sonicate for 30min, heat under reflux for 10-14h, filter, wash several times with deionized water and dry to obtain the cyclodextrin-modified vermiculite.

[0017] Preferably, the specific operation of B1 is as follows: 10g of vermiculite and 500mL of 4mol / L hydrochloric acid solution are added to a flask, heated and stirred in a water bath at 80-85℃ for 12h to obtain acidified vermiculite; the acidified vermiculite is washed with deionized water until no white precipitate is observed in the silver nitrate test of the washing solution to obtain washed vermiculite; the washed vermiculite is dried at 110-113℃ for 24-26h to obtain dried vermiculite; the dried vermiculite is ground and sieved to obtain pretreated vermiculite.

[0018] Preferably, in B2, the drying temperature is 30±2℃ and the drying time is 4-4.5h.

[0019] Preferably, in B3, the drying temperature is 105-110℃ and the drying time is 2-2.5h.

[0020] A preferred method for preparing colored waterproof mortar for interior and exterior waterproofing of building walls includes the following steps:

[0021] S1. Polypropylene fiber (modified with silane coupling agent), organomontmorillonite modified paraffin emulsion and cyclodextrin modified vermiculite are stirred and mixed to obtain fiber mixture;

[0022] S2. Mix cement, sand, fly ash, slag, iron oxide and precipitated silica to obtain the basic mixture;

[0023] S3. Mix water and water-reducing agent to obtain a water-reducing solution;

[0024] S4. Add the diluted aqueous solution obtained in S3 to the base mixture obtained in S2, stir and mix, then add the fiber mixture obtained in S1, and continue stirring and mixing to obtain the final product.

[0025] This application has the following beneficial effects:

[0026] 1. The present invention introduces an organomontmorillonite-modified paraffin emulsion into the raw material components of the decorative colored waterproof mortar (i.e., concrete mortar) for building exterior walls and interiors. The organomontmorillonite, through a dodecyl dimethyl ammonium bromide intercalating agent, expands the interlayer spacing to form a peeled structure. The expanded interlayer spacing exposes more silicon-oxygen tetrahedral active sites, which chemically adsorb onto the non-polar groups on the surface of polypropylene fibers through siloxane bonds. At the same time, the paraffin emulsion fills the micropores at the fiber-concrete interface, reducing the porosity of the concrete and decreasing stress concentration. Thus, through the dual (chemical adsorption + physical filling) synergistic effect, the interfacial bonding strength between the fiber and the concrete matrix is ​​improved, the fiber pull-out work is increased, and the splitting tensile strength of the concrete mortar is improved.

[0027] 2. The present invention introduces cyclodextrin-modified vermiculite into the mortar raw material components. The hydrophobic cavities of β-cyclodextrin can selectively partially encapsulate the tertiary carbon-hydrogen bonds in the polypropylene molecular chain, forming a physical shielding layer to block the free radical chain reaction initiated by ultraviolet rays. At the same time, the lamellar structure of vermiculite has a high reflectivity to ultraviolet rays, which can reduce the penetration of light into the interior of concrete. The cyclodextrin modification expands the interlayer spacing of vermiculite through intercalation, enhances the multiple scattering of ultraviolet rays between layers, prolongs the light path, and improves the shielding efficiency. Thus, through a dual protection mechanism (cyclodextrin forming a molecular-level protective layer on the surface of polypropylene fibers + vermiculite reflecting / scattering ultraviolet rays on a macroscopic scale), the photo-oxidation rate is synergistically reduced, and the splitting tensile strength retention rate of concrete mortar is improved.

[0028] 3. Cement releases Ca during hydration. 2+ Ca 2+ The bridging of organo-montmorillonite and vermiculite forms an organic-inorganic hybrid layer, namely, the organo-montmorillonite (organic modified layer) in the organo-montmorillonite modified paraffin emulsion and the vermiculite (inorganic layer) in the cyclodextrin modified vermiculite are connected by Ca... 2+ Alternating stacking can form a multi-layered composite structure similar to a "sandwich"; this organic-inorganic hybrid layer combines the interfacial bonding effect of organomontmorillonite and the ultraviolet scattering / reflection effect of vermiculite, thereby synergistically improving the splitting tensile strength and aging resistance (splitting tensile strength retention rate) of concrete mortar. Attached Figure Description

[0029] Figure 1 A comparative trend chart of the splitting tensile strength test data of concrete mortar cube specimens prepared in Examples 1-4 and Comparative Examples 1-3 of the present invention before and after aging under ultraviolet irradiation.

[0030] Figure 2 A comparative trend chart of the splitting tensile strength retention rate of concrete mortar cube specimens prepared in Examples 1-4 and Comparative Examples 1-3 of the present invention after aging under ultraviolet irradiation. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] Unless otherwise specified, the raw materials used in the embodiments and comparative examples of this application are all commercially available.

[0033] Example 1

[0034] (I) The preparation method of organomontmorillonite modified paraffin emulsion is as follows:

[0035] A1. Disperse 2g of montmorillonite in 125g of deionized water, let stand for 24h, then take the upper suspension and pour it into the first flask, then add 0.35g of the organic intercalating agent didodecyldimethylammonium bromide, and stir at 520rpm for 3.8h at 84℃ to obtain an organic montmorillonite solution.

[0036] A2. Add 10.2g of paraffin wax to the second flask at 80℃, melt it, and stir at 210rpm for 12min. Then add 0.28g of emulsifier and the organomontmorillonite solution obtained in A1, stir at 520rpm for 32min, and homogenize four times at 60MPa to obtain the organomontmorillonite-modified paraffin wax emulsion. The emulsifiers include Span80 and Tween-80, and the mass ratio of Span80 to Tween-80 is 1.1:1.

[0037] (II) The preparation method of cyclodextrin-modified vermiculite is as follows:

[0038] B1. Add 10g of vermiculite (20-40 mesh) and 500mL of 4mol / L hydrochloric acid solution to a flask, heat in a water bath at 82℃ and stir at 180rpm for 12h to obtain acidified vermiculite. Wash the acidified vermiculite with deionized water until no white precipitate is observed in the silver nitrate test of the washing solution to obtain washed vermiculite. Dry the washed vermiculite at 112℃ for 24h to obtain dried vermiculite. Grind and sieve the dried vermiculite to obtain pretreated vermiculite.

[0039] B2. Add 11g of β-cyclodextrin and 14.6g of KH560 to 100mL of DMF solution, stir to dissolve, add 0.4g of sodium hydroxide, heat to 60℃ and stir for 10h, cool, take out the unreacted sodium hydroxide solid, add 220mL of acetone and stir, a white precipitate precipitates, filter, wash three times with acetone to obtain a white powder, dry at 30℃ for 4.2h to obtain cyclodextrin derivative.

[0040] B3. Dissolve 0.52g of the cyclodextrin derivative obtained from B2 in 10L of deionized water, adjust the pH to 4.5 with glacial acetic acid, add methanol (60% by volume) at 35℃ for hydrolysis for 24h, add 0.5g of the pretreated vermiculite obtained from B1, sonicate at 50KHz for 30min, heat under reflux for 12h, filter, wash three times with deionized water, and dry in an oven at 108℃ for 2.2h to obtain cyclodextrin modified vermiculite.

[0041] (III) A method for preparing a colored waterproof mortar for interior waterproofing of building exterior walls, comprising the following steps:

[0042] S1. By weight, first add 2.4 parts of polypropylene fiber to the mixer and stir at low speed of 150 rpm for 2 minutes to disperse it; then slowly add 1.7 parts of organomontmorillonite modified paraffin emulsion and 1.9 parts of cyclodextrin modified vermiculite, increase the speed to 280 rpm and stir for 6 minutes, then reduce the speed to 100 rpm and continue stirring for 3 minutes to obtain the fiber mixture.

[0043] The polypropylene fiber is modified with a silane coupling agent. The specific treatment method is as follows: a 10% (w / w) ethanol aqueous solution (i.e., 10g ethanol dissolved in 90g deionized water) is prepared as the hydrolysis medium solution. Vinyltriethoxysilane is added at a mass of 1.5% of the hydrolysis medium solution mass. After stirring at 300rpm for 1 hour at a constant temperature of 60℃ in a water bath, the polypropylene fiber is completely immersed in the solution. After soaking at room temperature for 4 hours, the fiber is removed and repeatedly washed with acetone 3 times to remove excess coupling agent from the fiber surface. The fiber is then dried in an 80℃ hot air circulating oven for 50 minutes to obtain the final product.

[0044] S2. Mix 67 parts cement, 270 parts sand, 6 parts fly ash, 26 parts slag, 1.5 parts iron oxide and 1.8 parts silica at 200 rpm for 5 minutes to obtain the basic mixture.

[0045] The cement is P·O 42.5 grade Portland cement with a specific surface area ≥350m² / kg. The sand is Zone II medium sand with a fineness modulus of 2.3-3.0 and a mud content ≤2%. The fly ash is Class F, Grade II, with a loss on ignition ≤5%. The slag is S95 grade granulated blast furnace slag powder with an activity index ≥7d 95%. The silica is hydrophobic silica.

[0046] S3. Heat 40 parts of water to about 40°C, slowly add 1.55 parts of polycarboxylate high-performance water-reducing agent, and stir at high speed of 1000 rpm for 5 minutes. Let it stand to defoam for 10 minutes until there are no visible bubbles on the surface of the solution to obtain the water-reducing solution.

[0047] S4. Add the diluted aqueous solution obtained in S3 to the base mixture obtained in S2. First, stir at low speed of 100 rpm for 1 minute to wet it, then stir at high speed of 300 rpm for 3 minutes. Then add the fiber mixture obtained in S1, stir at low speed of 150 rpm for 3 minutes, and then stir at high speed of 300 rpm for 3 minutes to obtain the colored waterproof mortar for interior waterproofing of building exterior walls.

[0048] When using this concrete mortar, it requires molding and curing: after pouring, it should be compacted by vibrating table (frequency 50Hz, amplitude 0.5mm) for 20s; cover with plastic film to keep it moist, and cure under standard conditions (temperature 20±2℃, humidity ≥95%) until the specified age (28d).

[0049] Example 2

[0050] The difference between this embodiment and Embodiment 1 is that: a method for preparing a colored waterproof mortar for interior waterproofing and decoration of building exterior walls includes the following steps:

[0051] S1. By weight, 2.3 parts of polypropylene fiber, 1.6 parts of organomontmorillonite modified paraffin emulsion and 1.8 parts of cyclodextrin modified vermiculite are mixed to obtain fiber mixture.

[0052] S2. Mix 65 parts cement, 265 parts sand, 5 parts fly ash, 25 parts slag, 1 part iron oxide and 1.5 parts precipitated silica to obtain the basic mixture.

[0053] S3. Mix 38 parts water and 1.5 parts water-reducing agent to obtain a water-reducing solution.

[0054] S4. Add the diluted aqueous solution obtained in S3 to the base mixture obtained in S2, stir and mix, then add the fiber mixture obtained in S1, and continue stirring and mixing to obtain the colored waterproof mortar for interior and exterior waterproofing of buildings.

[0055] Example 3

[0056] The difference between this embodiment and Embodiment 1 is that: a method for preparing a colored waterproof mortar for interior waterproofing and decoration of building exterior walls includes the following steps:

[0057] S1. By weight, 2.5 parts of polypropylene fiber, 1.8 parts of organomontmorillonite modified paraffin emulsion and 2.0 parts of cyclodextrin modified vermiculite are mixed to obtain fiber mixture.

[0058] S2. Mix 68 parts cement, 280 parts sand, 7 parts fly ash, 28 parts slag, 2 parts iron oxide and 2 parts precipitated silica to obtain the basic mixture.

[0059] S3. Mix 43 parts water and 1.6 parts water-reducing agent to obtain a water-reducing solution.

[0060] S4. Add the diluted aqueous solution obtained in S3 to the base mixture obtained in S2, stir and mix, then add the fiber mixture obtained in S1, and continue stirring and mixing to obtain the colored waterproof mortar for interior and exterior waterproofing of buildings.

[0061] Example 4

[0062] The difference between this embodiment and Embodiment 1 is that: a method for preparing a colored waterproof mortar for interior waterproofing and decoration of building exterior walls includes the following steps:

[0063] S1. By weight, 2.3 parts of polypropylene fiber, 1.8 parts of organomontmorillonite modified paraffin emulsion and 2.0 parts of cyclodextrin modified vermiculite are mixed to obtain fiber mixture.

[0064] S2. Mix 64 parts cement, 275 parts sand, 6 parts fly ash, 25 parts slag, 2 parts iron oxide and 1.5 parts silica to obtain the basic mixture.

[0065] S3. Mix 42 parts water and 1.6 parts water-reducing agent to obtain a water-reducing solution.

[0066] S4. Add the diluted aqueous solution obtained in S3 to the base mixture obtained in S2, stir and mix, then add the fiber mixture obtained in S1, and continue stirring and mixing to obtain the colored waterproof mortar for interior and exterior waterproofing of buildings.

[0067] Comparative Example 1

[0068] The only difference between this comparative example and Example 1 is that the organic montmorillonite-modified paraffin emulsion and cyclodextrin-modified vermiculite are not added in the preparation of the decorative colored waterproof mortar for interior and exterior building walls.

[0069] Specifically, a method for preparing a colored waterproof mortar for interior waterproofing and decoration of building exterior walls includes the following steps:

[0070] S1. Mix 67 parts cement, 270 parts sand, 6 parts fly ash, 26 parts slag, 1.5 parts iron oxide and 1.8 parts silica to obtain the basic mixture.

[0071] S2. Mix 40 parts water and 1.55 parts water-reducing agent to obtain a water-reducing solution.

[0072] S4. Add the diluted solution obtained in S2 to the base mixture obtained in S1, stir and mix, then add 2.4 parts of polypropylene fiber, and continue stirring and mixing to obtain the colored waterproof mortar for interior and exterior waterproofing of buildings.

[0073] Comparative Example 2

[0074] The only difference between this comparative example and Example 1 is that no organic montmorillonite-modified paraffin emulsion is added in the preparation of the decorative colored waterproof mortar for interior and exterior building walls.

[0075] Specifically, a method for preparing a colored waterproof mortar for interior waterproofing and decoration of building exterior walls includes the following steps:

[0076] S1. By weight, 2.4 parts of polypropylene fiber and 1.9 parts of cyclodextrin-modified vermiculite are mixed to obtain fiber mixture.

[0077] S2. Mix 67 parts cement, 270 parts sand, 6 parts fly ash, 26 parts slag, 1.5 parts iron oxide and 1.8 parts silica to obtain the basic mixture.

[0078] S3. Mix 40 parts water and 1.55 parts water-reducing agent to obtain a water-reducing solution.

[0079] S4. Add the diluted aqueous solution obtained in S3 to the base mixture obtained in S2, stir and mix, then add the fiber mixture obtained in S1, and continue stirring and mixing to obtain the colored waterproof mortar for interior and exterior waterproofing of buildings.

[0080] Comparative Example 3

[0081] The only difference between this comparative example and Example 1 is that cyclodextrin-modified vermiculite is not added in the preparation of the decorative colored waterproof mortar for interior and exterior building walls.

[0082] Specifically, a method for preparing a colored waterproof mortar for interior waterproofing and decoration of building exterior walls includes the following steps:

[0083] S1. By weight, 2.4 parts of polypropylene fiber and 1.7 parts of organomontmorillonite modified paraffin emulsion are stirred and mixed to obtain fiber mixture.

[0084] S2. Mix 67 parts cement, 270 parts sand, 6 parts fly ash, 26 parts slag, 1.5 parts iron oxide and 1.8 parts silica to obtain the basic mixture.

[0085] S3. Mix 40 parts water and 1.55 parts water-reducing agent to obtain a water-reducing solution.

[0086] S4. Add the diluted aqueous solution obtained in S3 to the base mixture obtained in S2, stir and mix, then add the fiber mixture obtained in S1, and continue stirring and mixing to obtain the colored waterproof mortar for interior and exterior waterproofing of buildings.

[0087] Experimental Examples: ① The initial splitting tensile strength (accurate to 0.01 MPa) of concrete cube specimens prepared in Examples 1-4 and Comparative Example 1-3 was directly determined according to GB-T 50081-2019 "Standard for Test Methods of Physical and Mechanical Properties of Concrete". ② After aging with ultraviolet light (60℃ light irradiation - UVB-313 enhanced short-wave ultraviolet irradiation for 7 days), the splitting tensile strength of the concrete cube specimens prepared in Examples 1-4 and Comparative Example 1-3 was determined again (accurate to 0.01 MPa); the splitting tensile strength retention rate was calculated using the formula: Splitting tensile strength retention rate (%) = Splitting tensile strength after aging / Initial splitting tensile strength × 100%.

[0088] Experimental results: see Table 1.

[0089] Table 1. Experimental Data

[0090]

[0091] Results Analysis: Analysis of Examples 1-4, combined with data from Table 1 and... Figures 1-2 As can be seen, the splitting tensile strength of the concrete mortar cube specimens prepared by the present invention (Examples 1-4) is as high as 7.08 MPa or more. After aging by ultraviolet irradiation (60℃ light irradiation-UVB-313 enhanced short-wave ultraviolet irradiation for 7 days), the splitting tensile strength retention rate is as high as 93.02% or more.

[0092] Analyze Example 1 and Comparative Examples 1-3 and combine the data in Table 1 and Figures 1-2 Specifically, comparing Comparative Examples 1 and 3, it can be seen that, compared to Comparative Example 1, the addition of organo-montmorillonite-modified paraffin emulsion in the preparation of concrete mortar in Comparative Example 3 significantly increased the splitting tensile strength of the prepared concrete mortar cube specimens from 6.21 MPa (Comparative Example 1) to 6.82 MPa (Comparative Example 3). This indicates that the addition of organo-montmorillonite-modified paraffin emulsion can effectively improve the splitting tensile strength of the prepared concrete mortar.

[0093] Specifically, comparing Comparative Example 1 and Comparative Example 2, it can be seen that, compared to Comparative Example 1, the addition of cyclodextrin-modified vermiculite in the preparation of concrete mortar in Comparative Example 2 resulted in no significant change in the splitting tensile strength of the prepared concrete mortar cube specimens. However, after ultraviolet irradiation aging (60℃ light irradiation - UVB-313 enhanced short-wave ultraviolet irradiation for 7 days), the splitting tensile strength retention rate significantly increased from 85.51% (Comparative Example 1) to 90.56% (Comparative Example 2). This indicates that the addition of cyclodextrin-modified vermiculite can effectively improve the ultraviolet aging resistance of the prepared concrete mortar.

[0094] In comparison with Example 1, it can be seen that when organic montmorillonite-modified paraffin emulsion and cyclodextrin-modified vermiculite are added simultaneously in the preparation of concrete mortar, the two can produce a synergistic effect, which can synergistically improve the splitting tensile strength and UV aging resistance (split tensile strength retention rate) of the prepared concrete mortar.

[0095] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A building exterior wall indoor waterproof decorative type color waterproof mortar, characterized in that, By weight parts, including the following components: polypropylene fiber 2.3-2.5 parts, cement 65-68 parts, sand 265-280 parts, water 38-43 parts, water reducing agent 1.5-1.6 parts, fly ash 5-7 parts, slag 25-28 parts, iron oxide 1-2 parts, white carbon black 1.5-2 parts, organic montmorillonite modified paraffin emulsion 1.6-1.8 parts and cyclodextrin modified vermiculite 1.8-2.0 parts.

2. The indoor waterproof decorative color waterproof mortar for building exterior wall according to claim 1, characterized in that, The preparation method of the organic montmorillonite modified paraffin emulsion is as follows: A1, 2g of montmorillonite is dispersed in 120-130g of deionized water, and after standing for 24h, the upper suspension is poured into a first flask, 0.3-0.4g of organic intercalation agent is added, and stirring is carried out at 80-85℃, to obtain an organic montmorillonite solution; A2, 10-10.5g of paraffin is added to a second flask at 80-82℃, melted and stirred, then 0.25-0.3g of emulsifier and the organic montmorillonite solution obtained in A1 are added, stirred and homogenized 3-5 times, to obtain the organic montmorillonite modified paraffin emulsion.

3. The indoor waterproof decorative color waterproof mortar for building exterior wall according to claim 2, characterized in that, The organic intercalation agent is didodecyldimethylammonium bromide.

4. The indoor waterproof decorative color waterproof mortar for building exterior wall according to claim 2, characterized in that, The emulsifier includes Span80 and Tween-80, and the mass ratio of the two is (1-1.2):

1.

5. The indoor waterproof decorative color waterproof mortar for building exterior wall according to claim 1, characterized in that, The preparation method of the cyclodextrin modified vermiculite is as follows: B1, the vermiculite is sequentially acidified, washed, dried, ground, and the pretreated vermiculite is obtained; B2, 11g of β-cyclodextrin and 14.6g of KH560 are added to 100mL of DMF solution, stirred and dissolved, 0.4g of sodium hydroxide is added, heated and stirred to react, cooled, added with acetone and stirred, filtered, washed with acetone for several times, and dried, to obtain a cyclodextrin derivative; B3, 0.5-0.55g of the cyclodextrin derivative obtained in B2 is dissolved in 10L of deionized water, the PH is adjusted to 4.0-5.0, hydrolysis is carried out at 35℃ after adding a methanol solution, 0.5g of the pretreated vermiculite obtained in B1 is added, ultrasonic is carried out for 30min, heated and refluxed for 10-14h, filtered, washed with deionized water for several times and dried, to obtain the cyclodextrin modified vermiculite.

6. The indoor waterproof decorative color waterproof mortar for building exterior wall according to claim 5, characterized in that, The specific operation of B1 is as follows: 10g of vermiculite and 500mL of hydrochloric acid solution with a concentration of 4mol / L are added to a flask, heated and stirred in a water bath at 80-85℃ for 12h, to obtain acidified vermiculite; the acidified vermiculite is washed with deionized water until no white precipitate is observed in the silver nitrate test of the washing liquid, to obtain washed vermiculite; The washed vermiculite is dried at 110-113℃ for 24-26h, to obtain dried vermiculite; The dried vermiculite is ground and sieved, to obtain pretreated vermiculite.

7. The indoor waterproof decorative color waterproof mortar for building exterior wall according to claim 5, characterized in that, In B2, the drying temperature is 30±2℃, and the drying time is 4-4.5h.

8. The indoor waterproof decorative color waterproof mortar for building exterior wall according to claim 5, characterized in that, In B3, the drying temperature is 105-110℃, and the drying time is 2-2.5h.

9. The architectural exterior wall interior waterproofing decorative color waterproofing mortar according to any one of claims 1-8, characterized in that, The preparation method includes the following steps: S1, polypropylene fiber, organic montmorillonite modified paraffin emulsion and cyclodextrin modified vermiculite are stirred and mixed, to obtain a fiber mixture; S2, cement, sand, fly ash, slag, iron oxide and white carbon black are stirred and mixed, to obtain a basic mixture; S3, water and water reducing agent are stirred and mixed, to obtain a water reducing solution; S4, adding the water solution obtained in S3 into the base mixture obtained in S2, stirring and mixing, then adding the fiber mixture obtained in S1, continuously stirring and mixing, and obtaining the product.

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