CN111689749A - High-hardness wear-resistant resin cement mortar and preparation method thereof - Google Patents
High-hardness wear-resistant resin cement mortar and preparation method thereof Download PDFInfo
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- CN111689749A CN111689749A CN202010602975.7A CN202010602975A CN111689749A CN 111689749 A CN111689749 A CN 111689749A CN 202010602975 A CN202010602975 A CN 202010602975A CN 111689749 A CN111689749 A CN 111689749A
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- resistant resin
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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
- C04B28/14—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 calcium sulfate 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
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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
- 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
Abstract
The invention relates to the technical field of cement mortar, in particular to high-hardness wear-resistant resin cement mortar and a preparation method thereof, wherein the high-hardness wear-resistant resin cement mortar comprises an emulsion component and a dry powder mortar component which are mixed; the emulsion comprises the following raw materials: polymethyl methacrylate resin, a preservative, a flatting agent, a defoaming agent and water; the dry powder mortar comprises the following raw materials: cement, building sand, high-strength gypsum, a water reducing agent, a retarder, starch ether, an early strength agent, a dry powder leveling agent and a dry powder defoaming agent. The high-hardness wear-resistant resin cement mortar is prepared by mixing an emulsion component and a dry powder mortar component, so that the integral self-leveling property and the bonding strength of the high-hardness wear-resistant resin cement mortar in the construction process are improved, and the integral tensile resistance, crack resistance, impact resistance, wear resistance, hardness, salt spray resistance and chemical resistance of the high-hardness wear-resistant resin cement mortar after construction are improved.
Description
Technical Field
The invention relates to the technical field of cement mortar, in particular to high-hardness wear-resistant resin cement mortar and a preparation method thereof.
Background
Basement garage floors of early commercial and civil buildings were all leveled concrete or mortar base surfaces. Epoxy floor paint or carborundum floor is not popularized and used, after long-time rolling and friction of a vehicle, abrasion conditions appear in different degrees, the surface layer is usually dusted and frosted, the coarse aggregate is exposed seriously, and the conditions bring inconvenience to normal use and maintenance of a garage.
In the daily construction field, the application of the mortar is very wide, for example, masonry and plastering of wall bodies, and the like, and also some mortar is used for bonding of ceramic tiles, plastering outside wall surfaces, and the like, and the application field is very wide, but most of the mortar is used on the outer surface of the wall body, and is used on the building surface such as ground, floor or bridge floor, and the like, and external objects such as automobiles and the like need to be touched, if the wear resistance is poor, the service life of the mortar is greatly shortened, and the maintenance cost is increased.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the high-hardness wear-resistant resin cement mortar with good use effect and good wear resistance.
The invention also aims to provide a preparation method of the high-hardness wear-resistant resin cement mortar, which is simple to operate, convenient to control, high in production efficiency and low in production cost and can be used for large-scale production.
The purpose of the invention is realized by the following technical scheme: a high-hardness wear-resistant resin cement mortar comprises an emulsion component and a dry powder mortar component which are mixed;
the emulsion comprises the following raw materials in parts by weight:
the dry powder mortar comprises the following raw materials in parts by weight:
the high-hardness wear-resistant resin cement mortar disclosed by the invention is prepared by mixing the emulsion component and the dry powder mortar component, so that the integral self-leveling property and the bonding strength of the high-hardness wear-resistant resin cement mortar in the construction process are improved, and the integral tensile resistance, crack resistance, impact resistance, wear resistance, hardness, salt spray resistance and chemical resistance of the high-hardness wear-resistant resin cement mortar after construction are improved. The high-hardness wear-resistant resin cement mortar is an aqueous system, is more environment-friendly than the existing epoxy resin paint, avoids the use of organic solvents to pollute the environment, and does not generate material wastes after construction. The emulsion component adopts polymethyl methacrylate resin as main resin, and a preservative, a leveling agent and a defoaming agent are added, so that the high-hardness wear-resistant resin cement mortar has the capabilities of resisting stretching, cracking, impact, chemical resistance and self-leveling property; the dry powder mortar component takes cement and building sand as main materials, and the high-strength gypsum, the early strength agent and the retarder act synergistically to improve the hardness and the wear resistance of the high-hardness wear-resistant resin cement mortar, and simultaneously avoid cracking of the high-hardness wear-resistant resin cement mortar after construction, and the water reducer, the dry powder leveling agent, the dry powder defoaming agent and the starch ether jointly improve the overall construction performance of the high-hardness wear-resistant resin cement.
Preferably, the leveling agent is at least one of polyether modified polysiloxane, polyester modified polysiloxane, aromatic alkane modified polysiloxane, hydroxyl-containing acrylate leveling agent and fluorine modified acrylate leveling agent; the defoaming agent is modified polysiloxane and/or acrylate-vinyl ether copolymer.
By adopting the technical scheme, the self-leveling mortar is specially used for high-hardness wear-resistant resin cement mortar containing polymethyl methacrylate resin, cement, building sand and high-strength gypsum, the self-leveling performance is better, the defoaming effect is better, and the overall construction performance is improved. Specifically, the types of the polyether modified polysiloxane include but are not limited to SF-733, BD3032 or LE-086, the types of the polyester modified polysiloxane include but are not limited to H492, AKN-1110 or BD-3310, the types of the aromatic alkane modified polysiloxane include but are not limited to RH-T1023 or RH-T1010, the types of the hydroxyl-containing acrylate leveling agent include but are not limited to MFAOH, the types of the fluorine modified acrylate leveling agent include but are not limited to A-1377, Tech-179 or SRE-3177-90, the types of the modified polysiloxane include but are not limited to Defom5300 or BD303, and the types of the acrylate-vinyl ether copolymer include but are not limited to DF-300 or AC-300.
Preferably, the preservative is at least one of a paraben preservative, an isothiazolinone derivative and a benzimidazole compound.
By adopting the technical scheme, the high-hardness wear-resistant resin cement mortar has the combined action with the polymethyl methacrylate resin, so that the salt spray corrosion resistance and the chemical corrosion resistance of the high-hardness wear-resistant resin cement mortar are improved, and the phenomena of expansion, foaming, dissolution, cracks and the like of the high-hardness wear-resistant resin cement mortar in a solvent are prevented. Specifically, the paraben preservatives include, but are not limited to, sodium methyl paraben, sodium ethyl paraben, methyl paraben, ethyl paraben, propyl paraben, or butyl paraben, the isothiazolinone derivatives are of the type including, but not limited to, Kathon CG by rohm and kothon, MIT by Kathon, or K15 by beijing sandp, and the benzimidazole compounds include, but are not limited to, 5,2- (4-thiazole) -benzimidazole.
Preferably, the cement is at least one of ordinary portland cement, slag portland cement, fly ash portland cement and aluminate cement; the building sand is medium building sand.
By adopting the technical scheme, the cement, the medium sand for construction and the polymethyl methacrylate resin are combined, and the compactness is better after the cement mortar is solidified.
Preferably, the water reducing agent is at least one of lignosulfonate water reducing agents, sulfamate water reducing agents and polycarboxylate water reducing agents.
By adopting the technical scheme, the high-hardness wear-resistant resin cement mortar has a dispersing effect on the cement, can improve the workability, reduces the unit water consumption and improves the fluidity of the high-hardness wear-resistant resin cement mortar. Specifically, the lignosulfonate water reducing agent comprises, but is not limited to, calcium lignosulfonate, sodium lignosulfonate or magnesium lignosulfonate, the type of the sulfamate water reducing agent comprises, but is not limited to, HSA, and the type of the polycarboxylate water reducing agent comprises, but is not limited to, FS 20. More preferably, the water reducing agent is calcium lignosulfonate and polycarboxylate water reducing agent FS20 in a weight ratio of 1: 2-5, not only can improve the cement dispersibility and the fluidity of the high-hardness wear-resistant resin cement mortar in the construction process, but also can avoid reducing the strength of the high-hardness wear-resistant resin cement mortar caused by excessive water reducing agent.
Preferably, the starch ether is at least one of guar gum ether, sepiolite, bentonite, montmorillonite and kaolin.
By adopting the technical scheme, the viscosity stability is improved due to the etherification of the starch ether, so that the high-hardness wear-resistant resin cement mortar has stronger structurability, sagging resistance and easy operability.
Preferably, the retarder is at least one of polyvinyl alcohol, sodium pyrophosphate, sodium hexametaphosphate, sodium tripolyphosphate, sodium citrate and potassium sodium tartrate; the early strength agent is at least one of calcium formate, nitrite, chromate and sodium carbonate.
By adopting the technical scheme, the retarder is adopted to effectively prolong the hydration hardening time of cement, so that the freshly mixed mortar can keep plasticity for a long time, but when the retarder is used excessively, the top mortar can generate dry cracking shrinkage and shrinkage cracks due to excessive water evaporation; by adopting the early strength agent, the setting time of cement mortar can be shortened, and the early strength development rate of the cement mortar is greatly improved. More preferably, the retarder is polyvinyl alcohol, sodium pyrophosphate and sodium hexametaphosphate in a weight ratio of 1: 5-8: 1-2, mixing; the early strength agent is calcium formate and nitrite, and the weight ratio is 3-5: 1, mixing; the high-strength gypsum and the early strength agent improve the early strength of the cement mortar for improving the hardness and shortening the setting time of the cement mortar, but the early strength is improved too fast to cause the excessive dry cracking shrinkage or shrinkage cracks of water evaporation, the retarder is added, the synergistic effect of the three components can ensure that the initial setting time of the whole resin cement mortar is not too fast to cause the excessive dry cracking shrinkage or shrinkage cracks of water evaporation, the hardness and the wear resistance of the high-hardness wear-resistant resin cement mortar are improved, and meanwhile, the cracking of the high-hardness wear-resistant resin cement mortar after construction is avoided.
Preferably, the dry powder leveling agent is at least one of polyether modified polysiloxane, polyester modified polysiloxane, aromatic alkane modified polysiloxane, hydroxyl-containing acrylate leveling agent and fluorine modified acrylate leveling agent; the dry powder defoaming agent is modified polysiloxane and/or acrylate-vinyl ether copolymer.
By adopting the technical scheme, the self-leveling mortar is specially used for high-hardness wear-resistant resin cement mortar containing polymethyl methacrylate resin, cement, building sand and high-strength gypsum, the self-leveling performance is better, the defoaming effect is better, and the overall construction performance is improved. Specifically, the polyether modified polysiloxane is of a type including but not limited to RH-T1006N, the polyester modified polysiloxane is of a type including but not limited to SF-688 or BYK-3931P, the aromatic alkane modified polysiloxane is of a type including but not limited to RH-T1023 or RH-T1010 dried into powder, the fluorine modified acrylate leveling agent is KEPERSURF-387 dried into powder, the modified polysiloxane is of a type including but not limited to SXP-01, and the acrylate-vinyl ether copolymer is AC-300 dried into powder.
The other purpose of the invention is realized by the following technical scheme: the preparation method of the high-hardness wear-resistant resin cement mortar comprises the following steps:
(A) preparing the emulsion components:
(A1) weighing polymethyl methacrylate resin, a preservative, a flatting agent, a defoaming agent and water according to the weight parts for later use;
(A2) mixing polymethyl methacrylate resin and water under the stirring condition to obtain polymethyl methacrylate resin-water emulsion;
(A3) adding a preservative, a flatting agent and a defoaming agent into the polymethyl methacrylate resin-water emulsion under the stirring condition, uniformly stirring, and filtering to obtain the emulsion component;
(B) preparing the dry powder mortar component:
(B1) weighing cement, building sand, high-strength gypsum, a water reducing agent, a retarder, starch ether, an early strength agent, a dry powder leveling agent and a dry powder defoaming agent according to the weight parts for later use;
(B2) mixing cement, high-strength gypsum and a water reducing agent under the stirring condition, and then adding a retarder, starch ether, an early strength agent, a dry powder leveling agent and a dry powder defoaming agent and uniformly mixing to obtain a mixed material;
(B3) adding building sand into the mixture and stirring for a certain time to obtain the dry powder mortar component;
(C) preparing the high-hardness wear-resistant resin cement mortar:
according to the weight ratio of the dry powder mortar component to the emulsion component of 20-30: 15-20, adding the emulsion component into the dry powder mortar component, and uniformly stirring to obtain the high-hardness wear-resistant resin cement mortar.
The preparation method of the high-hardness wear-resistant resin cement mortar is simple to operate, convenient to control, high in production efficiency and low in production cost, and can be used for large-scale production. Firstly, respectively preparing an emulsion component and a dry powder mortar component, wherein the weight ratio of the dry powder mortar component to the emulsion component is 20-30: 15-20, avoiding the influence of the early adulteration of water into the dry powder mortar component on the performance, and being capable of respectively preparing the dry powder mortar component and the emulsion component in batches in advance, and then mixing the dry powder mortar component and the emulsion component in proportion on the construction site, which is more convenient. Wherein in the step (B2), the mixing time of the cement, the high-strength gypsum and the water reducing agent is 8-15min, so that the cement, the high-strength gypsum and the water reducing agent are more uniform; in the step (B3), the stirring time is 18-25min, so that the building sand is more uniformly mixed into the mixed material.
Preferably, the viscosity of the polymethyl methacrylate resin-water emulsion is 200-400 mPas; in the step (A3), the filtering treatment is filtering by using a filter bag with filtering precision of 200-400 μm.
By adopting the technical scheme, the viscosity of the polymethyl methacrylate resin-water emulsion obtained by mixing the polymethyl methacrylate resin and water is 200-400 mPa.s, so that the viscosity of the high-hardness wear-resistant resin cement mortar is adapted, the cracking phenomenon after solidification is avoided, and the workability of the high-hardness wear-resistant resin cement mortar is improved. The filter bag with the filtering precision of 200-400 mu m is adopted for filtering, and the agglomerated polymethyl methacrylate resin is filtered out, so that the performance of the emulsion component is prevented from being influenced.
Further, the use method of the high-hardness wear-resistant resin cement mortar comprises the following steps: and uniformly and flatly applying the high-hardness wear-resistant resin cement mortar on the building surface by using a water scraper, a toothed scraper or a mud scraper, and drying.
The invention has the beneficial effects that: the high-hardness wear-resistant resin cement mortar disclosed by the invention is prepared by mixing the emulsion component and the dry powder mortar component, so that the integral self-leveling property and the bonding strength of the high-hardness wear-resistant resin cement mortar in the construction process are improved, and the integral tensile resistance, crack resistance, impact resistance, wear resistance, hardness, salt spray resistance and chemical resistance of the high-hardness wear-resistant resin cement mortar after construction are improved. The high-hardness wear-resistant resin cement mortar is an aqueous system, is more environment-friendly than the existing epoxy resin paint, avoids the use of organic solvents to pollute the environment, and does not generate material wastes after construction.
The preparation method of the high-hardness wear-resistant resin cement mortar is simple to operate, convenient to control, high in production efficiency and low in production cost, and can be used for large-scale production.
Drawings
FIG. 1 is a report of a salt spray resistance test of a high-hardness abrasion-resistant resin cement mortar according to example 1 of the present invention;
FIG. 2 is a report of chemical resistance tests of the high-hardness abrasion-resistant resin cement mortar of example 1 of the present invention;
FIG. 3 is a graph showing the results of the environmental test of the high-hardness abrasion-resistant resin cement mortar of example 3 of the present invention;
FIG. 4 is a report of adhesion strength test of the high-hardness abrasion-resistant resin cement mortar of example 1 of the present invention;
FIG. 5 is a report of crack resistance test of the high-hardness abrasion-resistant resin cement mortar of example 1 of the present invention.
Detailed Description
For the understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
Example 1
A high-hardness wear-resistant resin cement mortar comprises an emulsion component and a dry powder mortar component which are mixed;
the emulsion comprises the following raw materials in parts by weight:
the dry powder mortar comprises the following raw materials in parts by weight:
the leveling agent is polyether modified polysiloxane SF-733. The defoaming agent is modified polysiloxane Defom 5300.
The preservative is isothiazolinone derivative Kathon CG.
The cement is ordinary portland cement; the building sand is medium building sand.
The water reducing agent is prepared from calcium lignosulphonate and polycarboxylate water reducing agent FS20 according to the weight ratio of 1: 3, and mixing.
The starch ether is guar gum ether.
The retarder is polyvinyl alcohol, sodium pyrophosphate and sodium hexametaphosphate in a weight ratio of 1: 6: 1.5 mixing; the early strength agent is calcium formate and nitrite according to the weight ratio of 4: 1 are mixed.
The dry powder leveling agent is polyether modified polysiloxane RH-T1006N; the dry powder defoaming agent is modified polysiloxane SXP-01.
The preparation method of the high-hardness wear-resistant resin cement mortar comprises the following steps:
(A) preparing the emulsion components:
(A1) weighing polymethyl methacrylate resin, a preservative, a flatting agent, a defoaming agent and water according to the weight parts for later use;
(A2) mixing polymethyl methacrylate resin and water under the stirring condition to obtain polymethyl methacrylate resin-water emulsion;
(A3) adding a preservative, a flatting agent and a defoaming agent into the polymethyl methacrylate resin-water emulsion under the stirring condition, uniformly stirring, and filtering to obtain the emulsion component;
(B) preparing the dry powder mortar component:
(B1) weighing cement, building sand, high-strength gypsum, a water reducing agent, a retarder, starch ether, an early strength agent, a dry powder leveling agent and a dry powder defoaming agent according to the weight parts for later use;
(B2) mixing cement, high-strength gypsum and a water reducing agent for 10min under the stirring condition, and then adding a retarder, starch ether, an early strength agent, a dry powder leveling agent and a dry powder defoaming agent to be uniformly mixed to obtain a mixed material;
(B3) adding building sand into the mixture and stirring for 20min to obtain the dry powder mortar component;
(C) preparing the high-hardness wear-resistant resin cement mortar:
according to the weight ratio of the dry powder mortar component to the emulsion component of 25: 18, adding the emulsion component into the dry powder mortar component and uniformly stirring to obtain the high-hardness wear-resistant resin cement mortar.
The viscosity of the polymethyl methacrylate resin-water emulsion is 300mPa & s; in the step (a3), the filtering process is performed by using a filter bag with a filtering precision of 300 μm.
Example 2
A high-hardness wear-resistant resin cement mortar comprises an emulsion component and a dry powder mortar component which are mixed;
the emulsion comprises the following raw materials in parts by weight:
the dry powder mortar comprises the following raw materials in parts by weight:
the leveling agent is polyether modified polysiloxane H492.
The defoaming agent is acrylate-vinyl ether copolymer DF-300.
The preservative is sodium methyl p-hydroxybenzoate.
The cement is aluminate cement; the building sand is medium building sand.
The water reducing agent is prepared from calcium lignosulphonate and polycarboxylate water reducing agent FS20 according to the weight ratio of 1: 2, mixing the components.
The starch ether is bentonite and montmorillonite in a weight ratio of 1: 1 are mixed.
The retarder is polyvinyl alcohol, sodium pyrophosphate and sodium hexametaphosphate in a weight ratio of 1: 5: 1, mixing; the early strength agent is calcium formate and nitrite according to the weight ratio of 3: 1 are mixed.
The dry powder leveling agent is aryl alkane modified polysiloxane RH-T1023 which is dried into powder; the dry powder defoaming agent is acrylate-vinyl ether copolymer AC-300 dried into powder.
The preparation method of the high-hardness wear-resistant resin cement mortar comprises the following steps:
(A) preparing the emulsion components:
(A1) weighing polymethyl methacrylate resin, a preservative, a flatting agent, a defoaming agent and water according to the weight parts for later use;
(A2) mixing polymethyl methacrylate resin and water under the stirring condition to obtain polymethyl methacrylate resin-water emulsion;
(A3) adding a preservative, a flatting agent and a defoaming agent into the polymethyl methacrylate resin-water emulsion under the stirring condition, uniformly stirring, and filtering to obtain the emulsion component;
(B) preparing the dry powder mortar component:
(B1) weighing cement, building sand, high-strength gypsum, a water reducing agent, a retarder, starch ether, an early strength agent, a dry powder leveling agent and a dry powder defoaming agent according to the weight parts for later use;
(B2) mixing cement, high-strength gypsum and a water reducing agent for 8min under the stirring condition, and then adding a retarder, starch ether, an early strength agent, a dry powder leveling agent and a dry powder defoaming agent to be uniformly mixed to obtain a mixed material;
(B3) adding building sand into the mixture and stirring for 18min to obtain the dry powder mortar component;
(C) preparing the high-hardness wear-resistant resin cement mortar:
according to the weight ratio of the dry powder mortar component to the emulsion component of 20: 15, adding the emulsion component into the dry powder mortar component, and uniformly stirring to obtain the high-hardness wear-resistant resin cement mortar.
The viscosity of the polymethyl methacrylate resin-water emulsion is 200mPa & s; in the step (a3), the filtering process is performed by using a filter bag with a filtering precision of 200 μm.
Example 3
A high-hardness wear-resistant resin cement mortar comprises an emulsion component and a dry powder mortar component which are mixed;
the emulsion comprises the following raw materials in parts by weight:
the dry powder mortar comprises the following raw materials in parts by weight:
the leveling agent is aromatic alkane modified polysiloxane RH-T1023; the defoaming agent is modified polysiloxane BD 303.
The preservative is 5,2- (4-thiazole) -benzimidazole.
The cement is fly ash Portland cement; the building sand is medium building sand.
The water reducing agent is prepared from calcium lignosulphonate and polycarboxylate water reducing agent FS20 according to the weight ratio of 1: 5, mixing the components.
The starch ether is kaolin.
The retarder is polyvinyl alcohol, sodium pyrophosphate and sodium hexametaphosphate in a weight ratio of 1: 8: 2, mixing; the early strength agent is calcium formate and nitrite according to the weight ratio of 5: 1 are mixed.
The dry powder leveling agent is a fluorine modified acrylate leveling agent KEPERSURF-387 which is dried into powder; the dry powder defoaming agent is acrylate-vinyl ether copolymer AC-300 modified polysiloxane which is dried into powder.
The preparation method of the high-hardness wear-resistant resin cement mortar comprises the following steps:
(A) preparing the emulsion components:
(A1) weighing polymethyl methacrylate resin, a preservative, a flatting agent, a defoaming agent and water according to the weight parts for later use;
(A2) mixing polymethyl methacrylate resin and water under the stirring condition to obtain polymethyl methacrylate resin-water emulsion;
(A3) adding a preservative, a flatting agent and a defoaming agent into the polymethyl methacrylate resin-water emulsion under the stirring condition, uniformly stirring, and filtering to obtain the emulsion component;
(B) preparing the dry powder mortar component:
(B1) weighing cement, building sand, high-strength gypsum, a water reducing agent, a retarder, starch ether, an early strength agent, a dry powder leveling agent and a dry powder defoaming agent according to the weight parts for later use;
(B2) mixing cement, high-strength gypsum and a water reducing agent for 15min under the stirring condition, and then adding a retarder, starch ether, an early strength agent, a dry powder leveling agent and a dry powder defoaming agent to be uniformly mixed to obtain a mixed material;
(B3) adding building sand into the mixture and stirring for 25min to obtain the dry powder mortar component;
(C) preparing the high-hardness wear-resistant resin cement mortar:
according to the weight ratio of the dry powder mortar component to the emulsion component of 30: and 20, adding the emulsion component into the dry powder mortar component, and uniformly stirring to obtain the high-hardness wear-resistant resin cement mortar.
The viscosity of the polymethyl methacrylate resin-water emulsion is 400mPa & s; in the step (a3), the filtering process is performed by using a filter bag with a filtering precision of 400 μm.
Example 4
A high-hardness wear-resistant resin cement mortar comprises an emulsion component and a dry powder mortar component which are mixed;
the emulsion comprises the following raw materials in parts by weight:
the dry powder mortar comprises the following raw materials in parts by weight:
the flatting agent is a hydroxyl-containing acrylate flatting agent MF AOH and a fluorine-modified acrylate flatting agent Tech-179 according to the weight ratio of 1: 2, mixing; the defoaming agent is modified polysiloxane BD303 and acrylate-vinyl ether copolymer DF-3009 according to the weight ratio of 3: 1 are mixed.
The preservative is prepared from methyl p-hydroxybenzoate and 5,2- (4-thiazole) -benzimidazole in a weight ratio of 2: 1 are mixed.
The cement is slag portland cement; the building sand is medium building sand.
More preferably, the water reducing agent is calcium lignosulfonate and polycarboxylate water reducing agent FS20 in a weight ratio of 1: 4, and mixing.
The starch ether is bentonite.
The retarder is polyvinyl alcohol, sodium pyrophosphate and sodium hexametaphosphate in a weight ratio of 1: 6.5: 1.8 mixing; the early strength agent is calcium formate and nitrite according to the weight ratio of 3.2: 1 are mixed.
The dry powder leveling agent is polyether modified polysiloxane RH-T1006N and polyester modified polysiloxane BYK-3931P according to the weight ratio of 3: 2, mixing; the dry powder defoaming agent is modified polysiloxane SXP-01.
The preparation method of the high-hardness wear-resistant resin cement mortar comprises the following steps:
(A) preparing the emulsion components:
(A1) weighing polymethyl methacrylate resin, a preservative, a flatting agent, a defoaming agent and water according to the weight parts for later use;
(A2) mixing polymethyl methacrylate resin and water under the stirring condition to obtain polymethyl methacrylate resin-water emulsion;
(A3) adding a preservative, a flatting agent and a defoaming agent into the polymethyl methacrylate resin-water emulsion under the stirring condition, uniformly stirring, and filtering to obtain the emulsion component;
(B) preparing the dry powder mortar component:
(B1) weighing cement, building sand, high-strength gypsum, a water reducing agent, a retarder, starch ether, an early strength agent, a dry powder leveling agent and a dry powder defoaming agent according to the weight parts for later use;
(B2) mixing cement, high-strength gypsum and a water reducing agent for 12min under the stirring condition, and then adding a retarder, starch ether, an early strength agent, a dry powder leveling agent and a dry powder defoaming agent to be uniformly mixed to obtain a mixed material;
(B3) adding building sand into the mixture and stirring for 23min to obtain the dry powder mortar component;
(C) preparing the high-hardness wear-resistant resin cement mortar:
according to the weight ratio of the dry powder mortar component to the emulsion component of 23: 18, adding the emulsion component into the dry powder mortar component and uniformly stirring to obtain the high-hardness wear-resistant resin cement mortar.
The viscosity of the polymethyl methacrylate resin-water emulsion is 300mPa & s; in the step (a3), the filtering process is performed by using a filter bag with a filtering precision of 300 μm.
Comparative example 1
The comparative example differs from example 1 in that:
the emulsion component is epoxy emulsion AEH-20.
Comparative example 2
The comparative example differs from example 1 in that:
the water reducing agent is calcium lignosulphonate.
Comparative example 3
The comparative example differs from example 1 in that:
the early strength agent is lithium hydroxide.
Comparative example 4
The comparative example differs from example 1 in that:
the retarder is sodium tripolyphosphate.
Example 5
I. The high-hardness wear-resistant resin cement mortar of example 1 is taken and tested for salt fog resistance and chemical resistance, and the test results are shown in fig. 1 and fig. 2, and as can be seen from fig. 1-2, the high-hardness wear-resistant resin cement mortar of example 1 has good salt fog resistance and chemical resistance;
II. The high-hardness wear-resistant resin cement mortar in the embodiment 3 is taken for testing the environmental protection performance, the test result is shown in figure 3, and as can be seen from figure 3, the VOC content in the embodiment 3 is extremely low, so that the environment protection is facilitated;
III, taking the high-hardness abrasion-resistant resin cement mortars of examples 1 to 4 and comparative examples 1 to 4, testing the tensile strength, tear strength, hardness, abrasion resistance, adhesion strength and crack resistance, and the test results are shown in the following Table 1:
TABLE 1
From table 1 above, it can be seen that:
the tensile strength, the tearing strength, the hardness, the wear resistance and the crack resistance of the emulsion component in the embodiment 1 are better than those in the comparison 1, which shows that the emulsion component adopts polymethyl methacrylate resin as main resin, and preservative, leveling agent and defoaming agent are added, so that the high-hardness wear-resistant resin cement mortar has the capabilities of tensile strength, crack resistance, impact resistance, chemical resistance and self-leveling property;
the tensile strength, the tear strength and the adhesion strength of the example 1 are better than those of the comparative example 2, which shows that the strength of the high-hardness wear-resistant resin cement mortar is prevented from being reduced by mixing the calcium lignosulfonate and the polycarboxylate water reducing agent FS20 in a specific ratio;
the tensile strength and the tear strength of the example 1 are better than those of the comparative example 3, which shows that the early strength agent adopts calcium formate and nitrite which are mixed according to a specific ratio, and has an accelerating effect on the tensile strength and the tear strength of the high-hardness wear-resistant resin cement mortar;
the tensile strength and the crack resistance of the concrete are better than those of the concrete in the comparative example 4, which shows that the retarder is prepared by mixing polyvinyl alcohol, sodium pyrophosphate and sodium hexametaphosphate in proportion, so that the high-hardness wear-resistant resin cement mortar is prevented from cracking after construction.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.
Claims (10)
1. The high-hardness wear-resistant resin cement mortar is characterized in that: comprises an emulsion component and a dry powder mortar component which are mixed for use;
the emulsion comprises the following raw materials in parts by weight:
the dry powder mortar comprises the following raw materials in parts by weight:
2. the high-hardness wear-resistant resin cement mortar as claimed in claim 1, wherein: the leveling agent is at least one of polyether modified polysiloxane, polyester modified polysiloxane, aromatic alkane modified polysiloxane, hydroxyl-containing acrylate leveling agent and fluorine modified acrylate leveling agent; the defoaming agent is modified polysiloxane and/or acrylate-vinyl ether copolymer.
3. The high-hardness wear-resistant resin cement mortar as claimed in claim 1, wherein: the preservative is at least one of a paraben preservative, an isothiazolinone derivative and a benzimidazole compound.
4. The high-hardness wear-resistant resin cement mortar as claimed in claim 1, wherein: the cement is at least one of ordinary portland cement, slag portland cement, fly ash portland cement and aluminate cement; the building sand is medium building sand.
5. The high-hardness wear-resistant resin cement mortar as claimed in claim 1, wherein: the water reducing agent is at least one of lignosulfonate water reducing agents, sulfamate water reducing agents and polycarboxylate water reducing agents.
6. The high-hardness wear-resistant resin cement mortar as claimed in claim 1, wherein: the starch ether is at least one of guar gum ether, sepiolite, bentonite, montmorillonite and kaolin.
7. The high-hardness wear-resistant resin cement mortar as claimed in claim 1, wherein: the retarder is at least one of polyvinyl alcohol, sodium pyrophosphate, sodium hexametaphosphate, sodium tripolyphosphate, sodium citrate and potassium sodium tartrate; the early strength agent is at least one of calcium formate, nitrite, chromate and sodium carbonate.
8. The high-hardness wear-resistant resin cement mortar as claimed in claim 1, wherein: the dry powder leveling agent is at least one of polyether modified polysiloxane, polyester modified polysiloxane, aromatic hydrocarbon modified polysiloxane, hydroxyl-containing acrylate leveling agent and fluorine modified acrylate leveling agent; the dry powder defoaming agent is modified polysiloxane and/or acrylate-vinyl ether copolymer.
9. A method for preparing high-hardness wear-resistant resin cement mortar according to any one of claims 1 to 8, comprising the steps of:
(A) preparing the emulsion components:
(A1) weighing polymethyl methacrylate resin, a preservative, a flatting agent, a defoaming agent and water according to the weight parts for later use;
(A2) mixing polymethyl methacrylate resin and water under the stirring condition to obtain polymethyl methacrylate resin-water emulsion;
(A3) adding a preservative, a flatting agent and a defoaming agent into the polymethyl methacrylate resin-water emulsion under the stirring condition, uniformly stirring, and filtering to obtain the emulsion component;
(B) preparing the dry powder mortar component:
(B1) weighing cement, building sand, high-strength gypsum, a water reducing agent, a retarder, starch ether, an early strength agent, a dry powder leveling agent and a dry powder defoaming agent according to the weight parts for later use;
(B2) mixing cement, high-strength gypsum and a water reducing agent under the stirring condition, and then adding a retarder, starch ether, an early strength agent, a dry powder leveling agent and a dry powder defoaming agent and uniformly mixing to obtain a mixed material;
(B3) adding building sand into the mixture and stirring for a certain time to obtain the dry powder mortar component;
(C) preparing the high-hardness wear-resistant resin cement mortar:
according to the weight ratio of the dry powder mortar component to the emulsion component of 20-30: 15-20, adding the emulsion component into the dry powder mortar component, and uniformly stirring to obtain the high-hardness wear-resistant resin cement mortar.
10. The method for preparing high-hardness wear-resistant resin cement mortar according to claim 9, wherein: the viscosity of the polymethyl methacrylate resin-water emulsion is 200-400mPa & s; in the step (A3), the filtering treatment is filtering by using a filter bag with filtering precision of 200-400 μm.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173661A (en) * | 2010-12-22 | 2011-09-07 | 北京东方雨虹防水技术股份有限公司 | Self-leveling polymer cement base repair mortar and preparation method thereof |
| CN102390962A (en) * | 2011-08-13 | 2012-03-28 | 西安市宏峰实业有限公司 | Desert sand compound type building dry-mixed mortar and manufacturing method thereof |
| FR2973024A1 (en) * | 2011-03-24 | 2012-09-28 | Parexlanko | DRY CEMENTITIOUS COMPOSITION FOR PREPARING WET FORMULATION OF COATING, MORTAR OR CONCRETE WITHOUT EFFLORESCENCE |
| CN102910885A (en) * | 2011-08-01 | 2013-02-06 | 明伦建材工业（苏州）有限公司 | Wear-resistant cement mortar, wear-resistant floor and preparation method thereof |
| CN104609791A (en) * | 2015-01-27 | 2015-05-13 | 建筑材料工业技术监督研究中心 | Phase-change energy-storage dual-limit temperature adjustment mortar and preparation method thereof |
| CN105272103A (en) * | 2014-05-30 | 2016-01-27 | 绿色清洁环保有限公司 | Color cement mortar composition for repairing concrete structure and method for repairing concrete structure using the composition |
-
2020
- 2020-06-29 CN CN202010602975.7A patent/CN111689749B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173661A (en) * | 2010-12-22 | 2011-09-07 | 北京东方雨虹防水技术股份有限公司 | Self-leveling polymer cement base repair mortar and preparation method thereof |
| FR2973024A1 (en) * | 2011-03-24 | 2012-09-28 | Parexlanko | DRY CEMENTITIOUS COMPOSITION FOR PREPARING WET FORMULATION OF COATING, MORTAR OR CONCRETE WITHOUT EFFLORESCENCE |
| CN102910885A (en) * | 2011-08-01 | 2013-02-06 | 明伦建材工业（苏州）有限公司 | Wear-resistant cement mortar, wear-resistant floor and preparation method thereof |
| CN102390962A (en) * | 2011-08-13 | 2012-03-28 | 西安市宏峰实业有限公司 | Desert sand compound type building dry-mixed mortar and manufacturing method thereof |
| CN105272103A (en) * | 2014-05-30 | 2016-01-27 | 绿色清洁环保有限公司 | Color cement mortar composition for repairing concrete structure and method for repairing concrete structure using the composition |
| CN104609791A (en) * | 2015-01-27 | 2015-05-13 | 建筑材料工业技术监督研究中心 | Phase-change energy-storage dual-limit temperature adjustment mortar and preparation method thereof |
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