CN109293315B - Polymer cement waterproof mortar and preparation method thereof - Google Patents
Polymer cement waterproof mortar and preparation method thereof Download PDFInfo
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- CN109293315B CN109293315B CN201811434826.3A CN201811434826A CN109293315B CN 109293315 B CN109293315 B CN 109293315B CN 201811434826 A CN201811434826 A CN 201811434826A CN 109293315 B CN109293315 B CN 109293315B
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- waterproof mortar
- polymer cement
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses polymer cement waterproof mortar and a preparation method thereof. The polymer cement waterproof mortar comprises the following components in percentage by weight based on the total weight of the polymer cement waterproof mortar: 30-45 wt% of Portland cement, 5-8 wt% of active zeolite powder, 5-10 wt% of hollow glass beads, 28-51 wt% of sand, 1-3 wt% of modified flame retardant, 0.05-0.15 wt% of cellulose ether, 5-8 wt% of adhesive, 0.02-0.05 wt% of polypropylene fiber and 0.05-0.3 wt% of water reducing agent. According to the invention, the flame retardant modified by the powdery polyvinyl alcohol ester compound is added into the waterproof mortar, so that the flame retardant property of the polymer cement waterproof mortar is improved, and the anti-permeability property of the waterproof mortar is also improved.
Description
Technical Field
The invention belongs to the technical field of cement waterproof mortar, and particularly relates to polymer cement waterproof mortar and a preparation method thereof.
Background
With the social development, new building materials and construction technologies such as aerated concrete, frame structures and the like are continuously generated, but certain problems occur in the use process of the materials, particularly for the domestic and southern markets. The aerated concrete has high water absorption rate, and the inner wall of the southern building structure is often mildewed due to the high water absorption rate of the aerated concrete. Therefore, the building outer wall needs to be subjected to waterproof treatment in rainy regions, different waterproof materials are selected according to different facing materials, and the polymer cement waterproof mortar has higher cost performance as a rigid waterproof material.
At present, the construction thickness of the polymer cement waterproof mortar is 3-5 mm, in order to achieve a good waterproof effect, more than 5% of high-molecular polymer needs to be added, for example, in patent application CN2011103312961, the material has a low oxygen index due to high polymer content, particularly 10% of polymer parameter, and can be directly ignited. Therefore, construction management needs to be particularly enhanced at a construction site to avoid a fire as much as possible. Meanwhile, many domestic high-rise buildings are in shortage of workers, and the traditional polymer cement waterproof mortar is high in stacking density, so that the labor intensity is high, and the building is heavy in load.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the polymer cement waterproof mortar, and the modified flame retardant is introduced, so that the flame retardant effect is achieved, and the anti-permeability performance of the product is improved; meanwhile, the hollow glass beads are added to reduce the stacking density of the waterproof mortar, increase the coating area of a unit product and reduce the total construction cost of a project.
In order to achieve the above object, an aspect of the present invention provides a polymer cement waterproof mortar comprising, based on the total weight of the polymer cement waterproof mortar: 30-45 wt% of Portland cement, 5-8 wt% of active zeolite powder, 5-10 wt% of hollow glass beads, 28-51 wt% of sand, 1-3 wt% of modified flame retardant, 0.05-0.15 wt% of cellulose ether, 5-8 wt% of adhesive, 0.02-0.05 wt% of polypropylene fiber and 0.05-0.3 wt% of water reducing agent.
Another aspect of the present invention provides a method for preparing the polymer cement waterproof mortar, including: and uniformly mixing the portland cement, the active zeolite powder, the hollow glass microspheres, the sand, the modified flame retardant, the cellulose ether, the adhesive, the polypropylene fibers and the water reducing agent to obtain the polymer cement waterproof mortar.
The technical scheme of the invention has the following beneficial effects:
(1) according to the invention, the flame retardant modified by the powdery polyvinyl alcohol ester compound is added into the waterproof mortar, so that the flame retardant property of the polymer cement waterproof mortar is improved, and the anti-permeability property of the waterproof mortar is also improved.
(2) According to the invention, the hollow glass beads are added into the waterproof mortar, so that the coating amount of the waterproof mortar in unit area is reduced, and the construction cost is further reduced.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
One aspect of the present invention provides a polymer cement waterproof mortar comprising, based on the total weight of the polymer cement waterproof mortar: 30-45 wt% of Portland cement, 5-8 wt% of active zeolite powder, 5-10 wt% of hollow glass beads, 28-51 wt% of sand, 1-3 wt% of modified flame retardant, 0.05-0.15 wt% of cellulose ether, 5-8 wt% of adhesive, 0.02-0.05 wt% of polypropylene fiber and 0.05-0.3 wt% of water reducing agent.
According to the invention, preferably, the modified flame retardant comprises a powdery polyethylene glycol lipid compound and a flame retardant, and the mass ratio of the powdery polyethylene glycol lipid compound to the flame retardant is 1: 20-30 parts of; the flame retardant is preferably magnesium hydroxide and/or aluminum hydroxide.
In the invention, the surface of the flame retardant is modified by using the powdery polyethylene glycol ester compound, so that the flame retardant is easier to fill in fine gaps between a cement hydration product and sand grains, between the cement hydration product and an adhesive and the like, thereby forming a better compact structure and playing a better waterproof and anti-permeability effect.
According to the present invention, preferably, the powdered polyethylene glycol lipid compound is powdered polyethylene glycol stearate and/or powdered polyethylene glycol oleate.
According to the invention, the addition of the modified flame retardant not only improves the flame retardant effect of the polymer cement waterproof mortar, but also further improves the anti-permeability performance of the product compared with the unmodified flame retardant.
According to the present invention, preferably, the modified flame retardant is prepared by the following method: and uniformly mixing the powdery polyethylene glycol ester compound and the flame retardant to obtain the modified flame retardant.
According to the present invention, preferably, the portland cement is selected from at least one of portland cement No. 42.5, portland cement No. 42.5R, and portland cement No. 52.5;
the sand is water-washed river sand and/or quartz sand, and the average grain size of the sand is 70-120 meshes.
According to the present invention, preferably, the cellulose ether is hydroxyethyl methyl cellulose ether and/or hydroxypropyl methyl cellulose ether, and the viscosity of the cellulose ether is 5000-25000 mPa.s.
According to the invention, preferably, the adhesive is at least one selected from vinyl acetate and ethylene copolymerized rubber powder, ethylene, vinyl chloride and vinyl metasilicate ternary copolymerized rubber powder, vinyl acetate, ethylene and higher fatty acid vinyl ester ternary copolymerized rubber powder, vinyl acetate and higher fatty acid vinyl ester copolymerized rubber powder, vinyl acetate, acrylate and higher fatty acid vinyl ester ternary copolymerized rubber powder, acrylate and styrene copolymerized rubber powder and acrylic acid homopolymerized rubber powder.
Preferably, the adhesive is a mixture of vinyl acetate, ethylene and higher fatty acid vinyl ester ternary copolymer rubber powder and vinyl acetate and ethylene copolymer rubber powder, and the mass ratio of the vinyl acetate, the ethylene and higher fatty acid vinyl ester ternary copolymer rubber powder to the vinyl acetate and ethylene copolymer rubber powder is preferably 1 (2-3).
According to the invention, preferably, the water reducing agent is a melamine water reducing agent and/or a polycarboxylic acid water reducing agent.
According to the invention, the average particle size of the active zeolite powder is preferably 300-600 meshes; the average particle size of the hollow glass beads is 120-200 meshes; the length of the polypropylene fiber is 3-6 mm.
Another aspect of the present invention provides a method for preparing the polymer cement waterproof mortar, wherein the method comprises: and uniformly mixing the portland cement, the active zeolite powder, the hollow glass microspheres, the sand, the modified flame retardant, the cellulose ether, the adhesive, the polypropylene fibers and the water reducing agent to obtain the polymer cement waterproof mortar.
When the polymer cement waterproof mortar is used, the polymer cement waterproof mortar powder and water are uniformly mixed for construction, and preferably, the mass ratio of the polymer cement waterproof mortar powder to the water is 1: 0.20-0.25.
The invention is further illustrated by the following examples:
the portland cements used in the following examples and comparative examples were ordinary portland cement No. 42.5, ordinary portland cement No. 42.5R, and ordinary portland cement No. 52.5, available from tangshan eastern cement corporation; the active zeolite powder is purchased from a Lingshoushuze ore processing factory; hollow glass beads were purchased from a lingshou tianlong mineral processing plant; the washing river sand and the quartz sand are purchased from Tangshan Jingrun company; hydroxyethyl methyl cellulose ether and hydroxypropyl methyl cellulose ether were both purchased from Beijing Longhu science and technology Limited; vinyl acetate and ethylene copolymerized rubber powder, vinyl acetate, ethylene and high-grade fatty acid vinyl ester ternary copolymerized rubber powder, and acrylic ester and styrene copolymerized rubber powder are all purchased from Beijing Longhu science and technology Limited; the melamine water reducer and the polycarboxylic acid water reducer are purchased from Beijing Longhu science and technology Limited; polypropylene fibers were purchased from beijing longhu corporation; magnesium hydroxide was purchased from jongnan wolder chemical ltd; aluminum hydroxide was purchased from Jinquan chemical Co., Ltd, of Jinan; the polyethylene glycol stearate and polyethylene glycol oleate are both available from Hainan Huasi surfactant, Inc.
Example 1
This example provides a polymer cement waterproof mortar, which comprises the following components by weight (kg):
wherein, powdery polyethylene glycol stearate and magnesium hydroxide are uniformly mixed to obtain the modified flame retardant; the mass ratio of the polyethylene glycol stearate to the magnesium hydroxide is 1: 20;
the preparation method of the polymer cement waterproof mortar comprises the following steps: and uniformly mixing all the components of the polymer cement waterproof mortar to obtain the polymer cement waterproof mortar.
Example 2
This example provides a polymer cement waterproof mortar, which comprises the following components by weight (kg):
wherein, powdery polyethylene glycol stearate and aluminum hydroxide are uniformly mixed to obtain the modified flame retardant; the mass ratio of the polyethylene glycol stearate to the aluminum hydroxide is 1: 25;
the preparation method of the polymer cement waterproof mortar comprises the following steps: and uniformly mixing all the components of the polymer cement waterproof mortar to obtain the polymer cement waterproof mortar.
Example 3
This example provides a polymer cement waterproof mortar, which comprises the following components by weight (kg):
wherein, powdery polyethylene glycol stearate, magnesium hydroxide and aluminum hydroxide are uniformly mixed to obtain the modified flame retardant; the mass ratio of the polyethylene glycol stearate to the magnesium hydroxide to the aluminum hydroxide is 1: 15: 15;
the preparation method of the polymer cement waterproof mortar comprises the following steps: and uniformly mixing all the components of the polymer cement waterproof mortar to obtain the polymer cement waterproof mortar.
Example 4
This example provides a polymer cement waterproof mortar, which comprises the following components by weight (kg):
wherein, powdery polyethylene glycol stearate, magnesium hydroxide and aluminum hydroxide are uniformly mixed to obtain the modified flame retardant; the mass ratio of the polyethylene glycol stearate to the magnesium hydroxide to the aluminum hydroxide is 1: 15: 15;
the preparation method of the polymer cement waterproof mortar comprises the following steps: and uniformly mixing all the components of the polymer cement waterproof mortar to obtain the polymer cement waterproof mortar.
Example 5
This example provides a polymer cement waterproof mortar, which comprises the following components by weight (kg):
wherein, powdery polyethylene glycol oleate, magnesium hydroxide and aluminum hydroxide are uniformly mixed to obtain the modified flame retardant; the mass ratio of the polyethylene glycol oleate to the magnesium hydroxide to the aluminum hydroxide is 1: 10: 15;
the preparation method of the polymer cement waterproof mortar comprises the following steps: and uniformly mixing all the components of the polymer cement waterproof mortar to obtain the polymer cement waterproof mortar.
Example 6
This example provides a polymer cement waterproof mortar, which comprises the following components by weight (kg):
wherein, powdery polyethylene glycol stearate, magnesium hydroxide and aluminum hydroxide are uniformly mixed to obtain the modified flame retardant; the mass ratio of the polyethylene glycol stearate to the magnesium hydroxide to the aluminum hydroxide is 1: 15: 15;
the preparation method of the polymer cement waterproof mortar comprises the following steps: the components of the polymer cement waterproof mortar are uniformly mixed to prepare the polymer cement waterproof mortar
Example 7
This example provides a polymer cement waterproof mortar, which comprises the following components by weight (kg):
wherein, powdery polyethylene glycol stearate, magnesium hydroxide and aluminum hydroxide are uniformly mixed to obtain the modified flame retardant; the mass ratio of the polyethylene glycol stearate to the magnesium hydroxide to the aluminum hydroxide is 1: 15: 15;
the preparation method of the polymer cement waterproof mortar comprises the following steps: the components of the polymer cement waterproof mortar are uniformly mixed to prepare the polymer cement waterproof mortar
Comparative example 1
This comparative example provides a polymer cement waterproof mortar having the following specific weight (kg) of each component:
the preparation method of the polymer cement waterproof mortar comprises the following steps: and uniformly mixing all the components of the polymer cement waterproof mortar to obtain the polymer cement waterproof mortar.
Comparative example 2
This comparative example provides a polymer cement waterproof mortar having the following specific weight (kg) of each component:
the preparation method of the polymer cement waterproof mortar comprises the following steps: and uniformly mixing all the components of the polymer cement waterproof mortar to obtain the polymer cement waterproof mortar.
Comparative example 3
This comparative example provides a polymer cement waterproof mortar having the following specific weight (kg) of each component:
the preparation method of the polymer cement waterproof mortar comprises the following steps: and uniformly mixing all the components of the polymer cement waterproof mortar to obtain the polymer cement waterproof mortar.
Comparative example 4
This comparative example provides a polymer cement waterproof mortar having the following specific weight (kg) of each component:
the preparation method of the polymer cement waterproof mortar comprises the following steps: and uniformly mixing all the components of the polymer cement waterproof mortar to obtain the polymer cement waterproof mortar.
Test example
The performance tests (item numbers 1-13 in Table 1-Table 2) are carried out on the examples and the comparative examples according to the corresponding method in the trademark JC/T984-2011, and the specific test results are shown in Table 1-Table 2; the flame retardant properties were tested as follows: testing by a cone calorimeter, preparing the polymer cement waterproof mortar into a sample block of 70mm 10mm, curing for 28 days under standard conditions (the temperature is 23 +/-2 ℃, and the relative humidity is 50 +/-5 percent), and testing the heat radiation intensity to be 50KW/M2The coupons were tested for ignition time and average heat release rate.
TABLE 1
TABLE 2
As can be seen from tables 1 and 2, the impermeability of the coating films of examples 1 to 5 are better than those of comparative examples 1 to 4, and therefore, the addition of the modified flame retardant improves the flame retardancy of the polymer cement waterproof mortar, and simultaneously, compared with the case of adding the flame retardant alone (comparative examples 3 to 4), the impermeability of the waterproof mortar is also obviously improved; the comparison of examples 3, 4, 6 and 7 shows that the vinyl acetate, ethylene and higher fatty acid vinyl ester terpolymer rubber powder and vinyl acetate and ethylene copolymer rubber powder have the best effect when mixed and used, and not only can the compressive strength and the flexural strength be ensured, but also the water absorption rate can be effectively ensured. When the proportion of the vinyl acetate, ethylene and higher fatty acid vinyl ester ternary copolymer rubber powder in the rubber powder is increased, the compressive strength of the polymer cement waterproof mortar is reduced.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (7)
1. The polymer cement waterproof mortar is characterized by comprising the following components in percentage by weight based on the total weight of the polymer cement waterproof mortar: 30-45 wt% of Portland cement, 5-8 wt% of active zeolite powder, 5-10 wt% of hollow glass beads, 28-51 wt% of sand, 1-3 wt% of modified flame retardant, 0.05-0.15 wt% of cellulose ether, 5-8 wt% of adhesive, 0.02-0.05 wt% of polypropylene fiber and 0.05-0.3 wt% of water reducer;
the modified flame retardant comprises a powdery polyethylene glycol ester compound and a flame retardant; the mass ratio of the powdery polyethylene glycol lipid compound to the flame retardant is 1: 20-30 parts of;
the powdery polyethylene glycol lipid compound is powdery polyethylene glycol stearate and/or powdery polyethylene glycol oleate;
the flame retardant is magnesium hydroxide and/or aluminum hydroxide;
the adhesive is a mixture of vinyl acetate, ethylene and higher fatty acid vinyl ester terpolymer rubber powder and vinyl acetate and ethylene copolymer rubber powder; the mass ratio of the vinyl acetate, the ethylene and the higher fatty acid vinyl ester ternary copolymer rubber powder to the vinyl acetate and ethylene copolymer rubber powder is 1 (2-3);
the average particle size of the hollow glass beads is 120-200 meshes.
2. The polymer cement waterproof mortar of claim 1, wherein the modified flame retardant is prepared by the following method: and uniformly mixing the powdery polyethylene glycol ester compound and the flame retardant to obtain the modified flame retardant.
3. The polymer cement waterproof mortar of claim 1, wherein the portland cement is selected from at least one of portland cement No. 42.5, portland cement No. 42.5R, and portland cement No. 52.5;
the sand is water-washed river sand and/or quartz sand, and the average grain size of the sand is 70-120 meshes.
4. The polymer cement waterproofing mortar according to claim 1, wherein the cellulose ether is hydroxyethyl methyl cellulose ether and/or hydroxypropyl methyl cellulose ether, the cellulose ether having a viscosity of 5000-25000 mpa.s.
5. The polymer cement waterproofing mortar of claim 1, wherein the water reducer is a melamine water reducer and/or a polycarboxylic acid water reducer.
6. The polymer cement waterproof mortar as claimed in claim 1, wherein the average particle size of the active zeolite powder is 300-600 mesh; the length of the polypropylene fiber is 3-6 mm.
7. The method for preparing a polymer cement waterproof mortar according to any one of claims 1 to 6, characterized in that it comprises: and uniformly mixing the portland cement, the active zeolite powder, the hollow glass microspheres, the sand, the modified flame retardant, the cellulose ether, the adhesive, the polypropylene fibers and the water reducing agent to obtain the polymer cement waterproof mortar.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000016882A (en) * | 1998-07-02 | 2000-01-18 | Nippon Chemical Kogyo Kk | Hydraulically cured product and its production |
| CN102503304A (en) * | 2011-10-27 | 2012-06-20 | 北京东方雨虹防水技术股份有限公司 | Flame-retardant polymer cement waterproof mortar |
| CN103922672A (en) * | 2014-04-04 | 2014-07-16 | 河北聚丰华春保温材料有限公司 | Thermal insulation mortar and preparation method thereof |
| CN104341560A (en) * | 2014-10-31 | 2015-02-11 | 中科院广州化学有限公司 | High polymer waterproofing agent and synthesis method and application thereof |
| CN108101468A (en) * | 2017-12-04 | 2018-06-01 | 华砂砂浆有限责任公司 | A kind of tile grout |
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- 2018-11-28 CN CN201811434826.3A patent/CN109293315B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000016882A (en) * | 1998-07-02 | 2000-01-18 | Nippon Chemical Kogyo Kk | Hydraulically cured product and its production |
| CN102503304A (en) * | 2011-10-27 | 2012-06-20 | 北京东方雨虹防水技术股份有限公司 | Flame-retardant polymer cement waterproof mortar |
| CN103922672A (en) * | 2014-04-04 | 2014-07-16 | 河北聚丰华春保温材料有限公司 | Thermal insulation mortar and preparation method thereof |
| CN104341560A (en) * | 2014-10-31 | 2015-02-11 | 中科院广州化学有限公司 | High polymer waterproofing agent and synthesis method and application thereof |
| CN108101468A (en) * | 2017-12-04 | 2018-06-01 | 华砂砂浆有限责任公司 | A kind of tile grout |
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