CN109574591B - Leveling mortar with waterproof function - Google Patents
Leveling mortar with waterproof function Download PDFInfo
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- CN109574591B CN109574591B CN201811572849.0A CN201811572849A CN109574591B CN 109574591 B CN109574591 B CN 109574591B CN 201811572849 A CN201811572849 A CN 201811572849A CN 109574591 B CN109574591 B CN 109574591B
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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
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2682—Halogen containing polymers, e.g. PVC
-
- 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)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the field of building materials, and particularly discloses leveling mortar with a waterproof function, which comprises the following components: cement, polytetrafluoroethylene micro powder, renewable latex powder, fumed silica, aggregate, metakaolin, a powder defoaming agent, cellulose ether, a powder water repellent, wood fiber and a water reducing agent. The leveling mortar with the waterproof function provided by the invention has the advantages that the reasonable surface hydrophobic effect is achieved by adding the polytetrafluoroethylene micro powder and the redispersed rubber powder, the leveling function is realized, the defect that the leveling mortar has no waterproof effect is overcome, the waterproof and leveling integration is realized, the step of additionally waterproofing after leveling is omitted, the construction efficiency is improved, and the cost is saved.
Description
Technical Field
The invention relates to the field of building materials, in particular to leveling mortar with a waterproof function.
Background
The leveling mortar is a dry-mixed powder material consisting of a plurality of active ingredients, can be directly used after being mixed with water on site, and can obtain a high-level base surface after being slightly spread by a scraper during construction. The leveling mortar has high hardening speed, can walk on the platform in 24 hours or carry out subsequent engineering (such as paving wood floors, diamond plates and the like), has quick and simple construction, and is incomparable with the traditional manual leveling.
However, the traditional leveling mortar is only suitable for renovation, repair and leveling of various cement-based floors, and the construction process is complex and tedious, and a series of procedures such as closed site → base layer inspection → base layer treatment → coating of self-leveling interface agent → preparation of slurry → paving of self-leveling slurry → air release → maintenance → finished product protection are required, which brings great inconvenience to the construction party, and waterproof layer construction is required after the leveling mortar construction is finished.
Disclosure of Invention
The invention aims to overcome at least one defect (deficiency) of the prior art, provides the leveling mortar with the waterproof effect, has the waterproof effect equivalent to that of the waterproof mortar, can realize the integration of leveling and waterproofing, avoids the step of waterproofing in the middle and improves the construction efficiency.
The technical scheme adopted by the invention is that the leveling mortar with the waterproof function comprises the following components: cement, polytetrafluoroethylene micro powder, renewable latex powder, fumed silica, aggregate, metakaolin, a powder defoaming agent, cellulose ether, a powder water repellent, wood fiber and a water reducing agent.
In the formula, the polytetrafluoroethylene micro powder has excellent dispersibility and powder compatibility, can reduce friction coefficient and improve lubricating effect, can play an excellent surface hydrophobic effect when added into a formula system, and can ensure that water drops do not stick on a coating due to good hydrophobic effect, thereby improving the waterproof effect of the waterproof mortar. The water reducing agent reduces the water consumption for mixing concrete, increases the opening time, influences the drying speed, slowly raises the early surface strength, increases the early strength by adding higher soil leading, and reduces the bleeding phenomenon. The special hydrophobic effect of the renewable rubber powder, the powder water repellent and the polytetrafluoroethylene micro powder is combined, so that the common leveling mortar has the waterproof effect equivalent to that of the waterproof mortar.
Further, the leveling mortar with the waterproof function comprises the following components in parts by weight:
20-40 parts of cement;
3-15 parts of polytetrafluoroethylene micro powder;
1-5 parts of redispersible latex powder;
1-5 parts of fumed silica;
20-50 parts of aggregate;
1-3 parts of metakaolin;
0.5-2 parts of a powder defoaming agent;
0.1-1 part of cellulose ether;
2-5 parts of a powder water repellent;
1-10 parts of wood fiber;
0.1-1 part of water reducing agent.
Further, the leveling mortar with the waterproof function comprises the following components in parts by weight:
25-35 parts of cement;
5-10 parts of polytetrafluoroethylene micro powder;
3-5 parts of redispersible latex powder;
1-3 parts of fumed silica;
35-45 parts of aggregate;
1.5-2.5 parts of metakaolin;
1-1.5 parts of a powder defoaming agent;
0.2-0.7 part of cellulose ether;
3-4 parts of a powder water repellent;
3-7 parts of wood fiber;
0.2-0.7 part of water reducing agent.
Wherein the cement is ordinary portland cement. The ordinary Portland cement is a hydraulic cementing material prepared by grinding Portland cement clinker, 5-20% of mixed material and a proper amount of gypsum, and has the characteristics of high strength, large hydration heat, good frost resistance, small dry shrinkage, good wear resistance, good carbonization resistance, poor corrosion resistance and no high temperature resistance. Preferably, PO42.5R mortar cement is used.
The polytetrafluoroethylene micropowder is also called low molecular weight polytetrafluoroethylene micropowder, polytetrafluoroethylene ultrafine powder and polytetrafluoroethylene wax, is white micropowder resin, and is low molecular weight free flowing powder prepared by coagulation, washing and drying of dispersion liquid obtained by telomerization of tetrafluoroethylene. The polytetrafluoroethylene micro powder has excellent performances of heat resistance, weather resistance, cold resistance, low friction, non-adhesiveness, chemical stability, electrical insulation performance and the like.
The redispersible latex powder is any one or combination of a plurality of ethylene/vinyl acetate copolymer, vinyl acetate/versatic acid ethylene copolymer and acrylic acid copolymer.
The fumed silica is one of high-tech superfine inorganic new materials, has porosity, is nontoxic, tasteless, pollution-free and high-temperature resistant. Meanwhile, the chemical inertness and the special thixotropic property of the product can effectively improve the tensile strength, the tear resistance and the wear resistance of the product.
The aggregate is any one or a combination of more of river sand, quartz sand and dolomite powder with different particle sizes. Preferably, the sand is formed by mixing 70-140 meshes of river sand and 80 meshes of quartz sand.
The powder defoaming agent is a dry powder organic silicon defoaming agent. The powder defoaming agent is formed by polymerizing polysiloxane, a special emulsifier and a high-activity polyether defoaming agent through a special process, and is characterized by strong defoaming capability, small using amount, lasting foam inhibition, good thermal stability, good fluidity, no side effect, convenient transportation and the like.
The cellulose ether is one or more of methylcellulose, hydroxypropyl methylcellulose, hydroxyethyl cellulose and hydroxymethyl cellulose.
The powder water repellent is polysiloxane powder water repellent.
The wood fiber is an organic flocculent fiber substance obtained by chemical treatment and mechanical processing of natural renewable wood, and is insoluble in water, weak acid and alkaline solution; the pH value is neutral, and the corrosion resistance of the system can be improved.
The water reducing agent is a polycarboxylic acid water reducing agent.
Compared with the prior art, the invention has the following beneficial effects:
(1) the leveling mortar with the waterproof function provided by the invention has the advantages that the reasonable surface hydrophobic effect is achieved by adding the polytetrafluoroethylene micro powder and the redispersed rubber powder, the leveling function is realized, the defect that the leveling mortar has no waterproof effect is overcome, the waterproof and leveling integration is realized, the step of additionally waterproofing after leveling is omitted, the construction efficiency is improved, and the cost is saved.
(2) The leveling mortar provided by the invention has good fluidity, quick early strength rise and short maintenance time, can be directly paved and pasted with ceramic tiles, and greatly shortens the construction period.
(3) The leveling mortar provided by the invention has high bending strength and compressive strength, does not generate powder on the surface, and can be directly paved with ceramic tiles; low cost, good adhesion, flatness and no hollowness.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in further detail below.
Example 1
The embodiment provides leveling mortar with a waterproof function, which comprises the following components in parts by weight:
PO42.5R cement 28 parts;
10 parts of polytetrafluoroethylene micro powder;
5 parts of redispersible latex powder;
1.5 parts of fumed silica;
27 parts of river sand of 70-140 meshes;
17.6 parts of 80-mesh quartz sand;
2 parts of metakaolin;
0.5 part of a powder defoaming agent;
0.2 part of cellulose ether;
3 parts of a powder water repellent;
5 parts of wood fiber;
0.2 part of water reducing agent.
Wherein PO42.5R the cement is ordinary Portland cement with strength of 42.5.
The polytetrafluoroethylene micropowder is PTFE micropowder N06 from Yuyu detailed micropowder materials works in Shenyang.
The redispersible latex powder is FL2200 redispersible latex powder of knobel (yi laitai).
Fumed silica is winning (degussa) hydrophobic fumed silica R812S.
The metakaolin is KAOPAZZ high activity metakaolin of inner Mongolia super brand building materials science and technology Limited.
The powder defoaming agent is a German Ming Ling chemical agitanr p803 organic silicon powder defoaming agent.
The water reducing agent is 325C polycarboxylate water reducing agent of Xika China company Limited.
The cellulose ether is 75HD400 hydroxypropyl methylcellulose available from Shandonghatti.
The wood fiber is MC-B300 from Yixing Ci Shabang building materials Co.
The powdered water repellent is American Dow Corning SHP50 organosilicon powdered water repellent.
The preparation method of the leveling mortar with the waterproof function comprises the following steps:
1. the input amount of the cement, river sand and quartz sand is set according to the formula and is conveyed to a pressure feed tank.
2. After the residual components are accurately weighed, the components are delivered to a pressure feed tank in a small material delivery bin.
3. After the materials are delivered, the materials are conveyed to a middle bin, and after all the materials reach the middle bin, the materials are conveyed to a mixer under pressure to be mixed, wherein the mixing process is about 8 minutes.
4. And after mixing, conveying to a finished product bin, carrying out central control detection, discharging and packaging after the finished product bin is qualified.
Example 2
The embodiment provides leveling mortar with a waterproof function, which comprises the following components in parts by weight:
PO42.5R and 30 parts of cement;
10 parts of polytetrafluoroethylene micro powder;
5 parts of redispersible latex powder;
1.5 parts of fumed silica;
25 parts of river sand of 70-140 meshes;
17.6 parts of 80-mesh quartz sand;
2 parts of metakaolin;
0.5 part of a powder defoaming agent;
0.2 part of cellulose ether;
3 parts of a powder water repellent;
5 parts of wood fiber;
0.2 part of water reducing agent.
The manufacturers and the brands of the components are the same as those of example 1.
Example 3
The embodiment provides leveling mortar with a waterproof function, which comprises the following components in parts by weight:
PO42.5R parts of cement;
10 parts of polytetrafluoroethylene micro powder;
5 parts of redispersible latex powder;
1.5 parts of fumed silica;
20 parts of river sand of 70-140 meshes;
17.6 parts of 80-mesh quartz sand;
2 parts of metakaolin;
0.5 part of a powder defoaming agent;
0.2 part of cellulose ether;
3 parts of a powder water repellent;
5 parts of wood fiber;
0.2 part of water reducing agent.
The manufacturers and the brands of the components are the same as those of example 1.
Example 4
The embodiment provides leveling mortar with a waterproof function, which comprises the following components in parts by weight:
20 parts of ordinary portland cement;
3 parts of polytetrafluoroethylene micro powder;
1 part of redispersible latex powder;
1 part of fumed silica;
15 parts of river sand of 70-140 meshes;
5 parts of 80-mesh quartz sand;
1 part of metakaolin;
0.5 part of a powder defoaming agent;
0.1 part of cellulose ether;
2 parts of a powder water repellent;
1 part of wood fiber;
0.1 part of water reducing agent.
Wherein the ordinary portland cement is 52.5-strength ordinary portland cement.
The polytetrafluoroethylene micropowder is PTFE micropowder N06 from Yuyu detailed micropowder materials works in Shenyang.
The redispersible latex powder is FL2200 redispersible latex powder of knobel (yi laitai).
Fumed silica is winning (degussa) hydrophobic fumed silica R812S.
The metakaolin is KAOPAZZ high activity metakaolin of inner Mongolia super brand building materials science and technology Limited.
The powder defoaming agent is a German Ming Ling chemical agitanr p803 organic silicon powder defoaming agent.
The water reducing agent is 325C polycarboxylate water reducing agent of Xika China company Limited.
The cellulose ether is hydroxyethyl cellulose.
The wood fiber is MC-B300 from Yixing Ci Shabang building materials Co.
The powdered water repellent is American Dow Corning SHP50 organosilicon powdered water repellent.
Example 5
The embodiment provides leveling mortar with a waterproof function, which comprises the following components in parts by weight:
40 parts of ordinary portland cement;
15 parts of polytetrafluoroethylene micro powder;
5 parts of redispersible latex powder;
5 parts of fumed silica;
35 parts of river sand of 70-140 meshes;
15 parts of 80-mesh quartz sand;
3 parts of metakaolin;
2 parts of a powder defoaming agent;
1 part of cellulose ether;
5 parts of a powder water repellent;
10 parts of wood fiber;
1 part of water reducing agent.
Wherein the ordinary portland cement is ordinary portland cement with the strength of 42.5.
The polytetrafluoroethylene micropowder is PTFE micropowder N06 from Yuyu detailed micropowder materials works in Shenyang.
The redispersible latex powder is FL2200 redispersible latex powder of knobel (yi laitai).
Fumed silica is winning (degussa) hydrophobic fumed silica R812S.
The metakaolin is KAOPAZZ high activity metakaolin of inner Mongolia super brand building materials science and technology Limited.
The powder defoaming agent is a German Ming Ling chemical agitanr p803 organic silicon powder defoaming agent.
The water reducing agent is 325C polycarboxylate water reducing agent of Xika China company Limited.
The cellulose ether is hydroxymethyl cellulose.
The wood fiber is MC-B300 from Yixing Ci Shabang building materials Co.
The powdered water repellent is American Dow Corning SHP50 organosilicon powdered water repellent.
Example 6
The embodiment provides leveling mortar with a waterproof function, which comprises the following components in parts by weight:
25 parts of ordinary portland cement;
5 parts of polytetrafluoroethylene micro powder;
3 parts of redispersible latex powder;
5 parts of fumed silica;
35 parts of river sand of 70-140 meshes;
1.5 parts of metakaolin;
1 part of a powder defoaming agent;
0.2 part of cellulose ether;
3 parts of a powder water repellent;
7 parts of wood fiber;
0.5 part of water reducing agent.
Wherein the ordinary portland cement is ordinary portland cement with the strength of 42.5.
The polytetrafluoroethylene micropowder is PTFE micropowder N06 from Yuyu detailed micropowder materials works in Shenyang.
The redispersible latex powder is FL2200 redispersible latex powder of knobel (yi laitai).
Fumed silica is winning (degussa) hydrophobic fumed silica R812S.
The metakaolin is KAOPAZZ high activity metakaolin of inner Mongolia super brand building materials science and technology Limited.
The powder defoaming agent is a German Ming Ling chemical agitanr p803 organic silicon powder defoaming agent.
The water reducing agent is 325C polycarboxylate water reducing agent of Xika China company Limited.
The cellulose ether is methyl cellulose.
The wood fiber is MC-B300 from Yixing Ci Shabang building materials Co.
The powdered water repellent is American Dow Corning SHP50 organosilicon powdered water repellent.
Comparative example 1
Compared with the example 1, the formulation contains 1 part of polytetrafluoroethylene micropowder.
Comparative example 2
Compared with the example 1, the formulation contains 17 parts of polytetrafluoroethylene micro powder.
Comparative example 3
Compared with the example 1, the re-dispersible latex powder in the formula is 0.5 part.
Comparative example 4
Compared with the example 1, the re-dispersible latex powder in the formula is 7 parts.
Performance testing
The leveling mortar provided in examples 1 to 5 and comparative examples 1 to 4 was subjected to a performance test, and the specific test results are shown in table 1.
From the test data in table 1, it can be seen that the leveling mortars provided in examples 1 to 5 have good fluidity (both the initial fluidity and the 20-minute fluidity meet the standards), fast increase of early strength, short curing time, high compressive, flexural and impervious strengths, high bonding strength, and good adhesive properties. The data of comparative examples 1 to 4 show that the addition amounts of the polytetrafluoroethylene micro powder and the redispersible latex powder affect the initial fluidity and the 20-minute fluidity of the leveling mortar, the compressive strength and the impermeability, and the addition amounts of the polytetrafluoroethylene micro powder and the redispersible latex powder affect the fluidity and the waterproof performance of the product. The invention reasonably adds the polytetrafluoroethylene micro powder and the redispersed rubber powder, and the combination of the polytetrafluoroethylene micro powder and the redispersed rubber powder enables the leveling mortar to achieve reasonable surface hydrophobic effect and simultaneously has the leveling function.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention claims should be included in the protection scope of the present invention claims.
TABLE 1
Claims (7)
1. The leveling mortar with the waterproof function is characterized by comprising the following components: cement, polytetrafluoroethylene micro powder, renewable latex powder, fumed silica, aggregate, metakaolin, a powder defoaming agent, cellulose ether, a powder water repellent, wood fiber and a water reducing agent;
the paint comprises the following components in parts by weight:
the redispersible latex powder is FL2200 redispersible latex powder of Acksonobel (Yilaitai);
the aggregate is any one or combination of more of river sand, quartz sand and dolomite powder with different particle sizes.
2. The leveling mortar with the waterproof function according to claim 1, which comprises the following components in parts by weight:
3. the leveling mortar with waterproof function according to claim 1 or 2, wherein the cement is ordinary portland cement.
4. The leveling mortar with waterproof function according to claim 1 or 2, wherein the powder defoamer is a dry powder silicone defoamer.
5. The leveling mortar with waterproof function according to claim 1 or 2, wherein the cellulose ether is one or more of methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose and hydroxymethyl cellulose.
6. The leveling mortar with the waterproof function according to claim 1 or 2, wherein the aggregate is formed by mixing 70-140-mesh river sand and 80-mesh quartz sand.
7. The leveling mortar with the waterproof function according to claim 1 or 2, wherein the powder water repellent is a polysiloxane powder water repellent; and/or the water reducing agent is a polycarboxylic acid water reducing agent.
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| CN114195450B (en) * | 2021-12-08 | 2022-07-26 | 亚士创能科技(上海)股份有限公司 | Waterproof leveling mortar and preparation method and application thereof |
| CN114262197B (en) * | 2022-02-24 | 2022-05-27 | 科顺防水科技股份有限公司 | Sound insulation mortar, sound insulation layer and sound insulation floor |
| CN115286284A (en) * | 2022-08-23 | 2022-11-04 | 江苏蓝圈新材料股份有限公司 | Additive for improving strength and water resistance of mortar and preparation process thereof |
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| CN109574591A (en) | 2019-04-05 |
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