CN116535170B - Preparation method of novel polymer surface mortar - Google Patents

Preparation method of novel polymer surface mortar Download PDF

Info

Publication number
CN116535170B
CN116535170B CN202310818367.3A CN202310818367A CN116535170B CN 116535170 B CN116535170 B CN 116535170B CN 202310818367 A CN202310818367 A CN 202310818367A CN 116535170 B CN116535170 B CN 116535170B
Authority
CN
China
Prior art keywords
prepare
photoinitiated
stirring
pure water
mass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202310818367.3A
Other languages
Chinese (zh)
Other versions
CN116535170A (en
Inventor
安琳
吴金学
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Runheng Environmental Protection Co ltd
Original Assignee
Shandong Runheng Environmental Protection Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Runheng Environmental Protection Co ltd filed Critical Shandong Runheng Environmental Protection Co ltd
Priority to CN202310818367.3A priority Critical patent/CN116535170B/en
Publication of CN116535170A publication Critical patent/CN116535170A/en
Application granted granted Critical
Publication of CN116535170B publication Critical patent/CN116535170B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/40Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
    • C04B24/42Organo-silicon compounds
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymerisation Methods In General (AREA)
  • Silicon Polymers (AREA)

Abstract

The invention discloses a preparation method of novel polymer surface mortar, and relates to the technical field of building materials. When the novel polymer plastering mortar is prepared, 3-aminopropyl trimethoxy silane and 4-chlorobenzophenone are reacted to prepare photoinitiated silane, and polyethylene glycol PEG400, allyl trimethoxy silane and photoinitiated silane are reacted to prepare photoinitiated organosilicon polyester; preparing modified basalt fibers by reacting basalt fibers with photoinitiated organic silicon polyester; emulsifying soft monomer, hard monomer and allyl triethoxysilane as monomers with an emulsifier, initiating polymerization with an initiator to prepare polymer emulsion, and reacting to prepare the polymer emulsion; mixing and stirring cement, modified basalt fiber, fly ash, polymer emulsion and pure water to obtain the novel polymer plastering mortar. The novel polymer plastering mortar prepared by the invention has good bonding property and corrosion resistance.

Description

Preparation method of novel polymer surface mortar
Technical Field
The invention relates to the technical field of building materials, in particular to a preparation method of novel polymer plastering mortar.
Background
The mortar which is smeared on the surfaces of buildings, building components and base materials and has the function of protecting the base layer and meeting the use requirement is called as plastering mortar. The plastering mortar can be classified into general plastering mortar, decorative mortar and plastering mortar having some special functions according to different functions of the plastering mortar. The plastering mortar is required to have good workability, is easy to smear into a uniform and flat thin layer, and is convenient for construction; the adhesive force is high, so that the adhesive is not easy to crack or fall off; when the mortar is in a humid environment or in a part which is easy to be acted by external force, the mortar should also have higher water resistance and strength.
With the acceleration of the urban process, the building house industry is vigorously developed, and the building industry still keeps a high growth speed. Thus, the demands and requirements of the construction engineering for the finishing mortar are increasing. For wet sites, coastal areas, buildings are prone to corrosion. Therefore, there is a need to develop a finishing mortar having good corrosion resistance to protect the building.
Disclosure of Invention
The invention aims to provide a preparation method of novel polymer surface mortar, which aims to solve the problems in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
the novel polymer plastering mortar mainly comprises the following components in parts by mass: 20-30 parts of cement, 10-15 parts of modified basalt fiber, 10-15 parts of fly ash, 10-15 parts of polymer emulsion and 5-7 parts of pure water.
As optimization, the modified basalt fiber is prepared by basalt fiber and photoinitiated organic silicon polyester reaction.
As optimization, the photoinitiated organic silicon polyester is prepared by reacting 3-aminopropyl trimethoxy silane with 4-chlorobenzophenone to prepare photoinitiated silane, and the photoinitiated silane is prepared by reacting polyethylene glycol PEG400, allyl trimethoxy silane and photoinitiated silane.
The polymer emulsion is prepared by using soft monomer, hard monomer and allyl triethoxysilane as monomers, emulsifying the monomers by using an emulsifying agent, and initiating polymerization by using an initiator.
The preparation method of the novel polymer plastering mortar mainly comprises the following preparation steps:
(1) Uniformly mixing polyethylene glycol PEG400, allyl trimethoxy silane and photoinitiated silane according to a molar ratio of 1.5:1:0.1-0.2 in a nitrogen atmosphere, adding p-toluenesulfonic acid which is 0.004-0.006 times of the mass of the polyethylene glycol PEG400, stirring at 90-100 ℃ for reaction for 20-30 min at 300-500 r/min, heating to 150-160 ℃ for continuous stirring for reaction for 6-8 h, cooling to room temperature, and standing at 50-60 ℃ for 3-4 h at 10-20 Pa to obtain photoinitiated organosilicon polyester;
(2) Uniformly mixing basalt fibers, photoinitiated organic silicon polyester, absolute ethyl alcohol and pure water according to a mass ratio of 1:2-3:12-16:4-6, stirring for 60-80 min at 20-30 ℃ and 600-800 r/min, filtering, washing for 3-5 times with absolute ethyl alcohol, and drying for 6-8 h at 60-70 ℃ to obtain modified basalt fibers;
(3) Uniformly mixing a soft monomer, a hard monomer, allyl triethoxysilane, an emulsifier and pure water according to a mass ratio of 1:1:0.2-0.3:0.06-0.08:4-5 to prepare a monomer emulsion; uniformly mixing a thermal initiator and pure water according to a mass ratio of 1:30-40 to prepare a thermal initiation solution; uniformly mixing an OP-10 emulsifier and pure water according to a mass ratio of 1:20-30 to prepare an emulsion base solution, dropwise adding a monomer emulsion with a mass 1.2-1.4 times of that of the emulsion base solution and a heat initiation solution with a mass 0.6-0.7 times of that of the emulsion base solution at a uniform speed within 50-60 min under the stirring condition of 300-500 r/min at the temperature of 80-85 ℃, keeping the temperature unchanged for continuous reaction for 2-3 hours after the dropwise adding, and concentrating at the temperature of 30-40 ℃ at the pressure of 50-100 Pa until the water content is 40-42%, thus preparing a polymer emulsion;
(4) Weighing 20-30 parts of cement, 10-15 parts of modified basalt fiber, 10-15 parts of fly ash, 10-15 parts of polymer emulsion and 5-7 parts of pure water according to parts by mass; mixing cement, modified basalt fiber and fly ash uniformly to prepare powder, mixing polymer emulsion and pure water uniformly to prepare liquid material, pouring the dry material into the liquid material, and stirring at 20-30 ℃ for 3-4 min at 600-800 r/min to obtain the novel polymer plastering mortar.
As an optimization, the preparation method of the photoinitiated silane in the step (1) comprises the following steps: uniformly mixing 3-aminopropyl trimethoxy silane and methylene dichloride according to the mass ratio of 1:8-10, adding triethylamine with the mass of 0.04-0.06 times that of the 3-aminopropyl trimethoxy silane, stirring for 3-5 min at the temperature of 0-5 ℃ and 300-500 r/min, continuously stirring, adding 4-chlorobenzophenone with the same molar weight of 3-aminopropyl trimethoxy silane, stirring for 50-60 min at the temperature of 0-5 ℃ and 300-500 r/min, standing for 20-24 h at room temperature, and drying for 6-8 h at the temperature of 10-20 ℃ and 50-100 Pa.
And (3) optimally, the basalt fiber in the step (2) has the diameter of 10-15 mu m and the length of 8-12 mm.
As optimization, the soft monomer in the step (3) is one or more of ethyl acrylate, butyl acrylate and isooctyl acrylate; the hard monomer is one or more of vinyl acetate, styrene, acrylonitrile, methyl methacrylate and acrylamide; the emulsifier is OP-10 emulsifier; the thermal initiator is ammonium persulfate; the water content refers to the mass fraction of pure water in the polymer emulsion.
As optimization, the cement in the step (4) is PO42.5 ordinary Portland cement; the fly ash is 800-1000 meshes of fly ash.
Compared with the prior art, the invention has the following beneficial effects:
when the novel polymer plastering mortar is prepared, basalt fibers and photoinitiated organic silicon polyester are reacted to prepare modified basalt fibers; mixing and stirring cement, modified basalt fiber, fly ash, polymer emulsion and pure water to obtain the novel polymer plastering mortar.
Firstly, 3-aminopropyl trimethoxy silane and 4-chlorobenzophenone react to prepare photoinitiated silane, polyethylene glycol PEG400, allyl trimethoxy silane and photoinitiated silane react to prepare photoinitiated organosilicon polyester, the photoinitiated organosilicon polyester has photoinitiated performance, photoinitiated groups can initiate polymerization of free radical unsaturated bonds under irradiation of sunlight or artificial ultraviolet lamps to form a crosslinked network, so that the bonding performance and corrosion resistance are improved, the photoinitiated organosilicon polyester is used for modifying basalt fibers, the dispersibility is improved, hydrolysis of the photoinitiated organosilicon polyester can be caused under the conditions of hydration and heating of cement or insolation, a large number of silicon hydroxyl chain segments can be combined with inorganic components, the structure is more compact and firm, and the bonding performance and corrosion resistance are further improved.
Secondly, emulsifying soft monomers, hard monomers and allyl triethoxysilane serving as monomers by using an emulsifying agent, initiating polymerization by using an initiator to prepare polymer emulsion, and reacting to prepare the polymer emulsion; allyl triethoxysilane is added in the preparation process of the polymer emulsion, so that the polymer emulsion and an inorganic interface can be well combined with each other, and the combined inorganic components are subjected to surface coverage and hydrophobic protection, so that the adhesive property and the corrosion resistance are improved.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to more clearly illustrate the method provided by the invention, the following examples are used for describing the detailed description, and the test methods of each index of the novel polymer finishing mortar prepared in the following examples are as follows:
adhesive properties: the materials obtained in each example and comparative example are coated on a test board and are exposed to sunlight for 5min, then are placed in a room for standing for 24h to be solidified into a paint film with the thickness of 0.5mm, according to the specification of GBT 9755-2014, a scribing test adhesion method is adopted, a single-blade cutter is used for horizontally cutting 3 channels on the test board coated with the paint film, then the same cutting is carried out for 3 channels in the direction vertical to the horizontal direction, the distance between each channel is 3mm, the grid number is 4, then an adhesive tape tearing experiment is carried out, and the adhesion grade is recorded.
Corrosion resistance: the materials obtained in each example and comparative example are coated on a polytetrafluoroethylene plate and are exposed to sunlight for 5min, then are placed indoors for standing for 24h to be solidified into a paint film with the thickness of 0.5mm, the paint film is immersed in hydrochloric acid solution with the PH of 1 after being stripped, and then is placed at the temperature of 30 ℃ for 72h, and the materials are weighed again after being washed and dried, and the quality difference before and after calculation is recorded as the corrosion amount.
Example 1
The preparation method of the novel polymer surface mortar comprises the following preparation steps:
(1) Uniformly mixing 3-aminopropyl trimethoxy silane and methylene dichloride according to the mass ratio of 1:8, adding triethylamine with the mass of 0.04 times that of the 3-aminopropyl trimethoxy silane, stirring at 0 ℃ for 5min at 300r/min, continuously stirring, adding 4-chlorobenzophenone with the same molar weight as the 3-aminopropyl trimethoxy silane, stirring at 0 ℃ for 60min at 300r/min, standing at room temperature for 24h, and drying at 10 ℃ for 8h at 50Pa to obtain photoinitiated silane; uniformly mixing polyethylene glycol PEG400, allyl trimethoxy silane and photoinitiated silane according to a molar ratio of 1.5:1:0.1 in a nitrogen atmosphere, adding p-toluenesulfonic acid with the mass of 0.004 times that of the polyethylene glycol PEG400, stirring at 90 ℃ and 300r/min for reaction for 30min, heating to 150 ℃ for continuous stirring for reaction for 8h, cooling to room temperature, and standing at 50 ℃ and 10Pa for 4h to obtain photoinitiated organic silicon polyester;
(2) Uniformly mixing basalt fiber with the diameter of 10 mu m and the length of 8mm, photoinitiated organic silicon polyester, absolute ethyl alcohol and pure water according to the mass ratio of 1:2:12:4, stirring for 80min at 20 ℃ and 600r/min, filtering, washing 3 times with absolute ethyl alcohol, and drying at 60 ℃ for 8 hours to obtain modified basalt fiber;
(3) Uniformly mixing ethyl acrylate, methyl methacrylate, allyl triethoxysilane, OP-10 emulsifier and pure water according to the mass ratio of 1:1:0.2:0.06:4 to prepare monomer emulsion; uniformly mixing ammonium persulfate and pure water according to a mass ratio of 1:300 to prepare a thermal initiation solution; uniformly mixing an OP-10 emulsifier and pure water according to a mass ratio of 1:20 to prepare an emulsified base solution, dropwise adding monomer emulsion with the mass 1.2 times of that of the emulsified base solution and a thermal initiation solution with the mass 0.6 times of that of the emulsified base solution at a uniform speed within 50min under the stirring condition of 300r/min at the temperature of 80 ℃, keeping the temperature unchanged for continuous reaction for 3 hours after the dropwise adding, and concentrating at the temperature of 30 ℃ under the pressure of 50Pa until the water content is 40%, thus preparing polymer emulsion;
(4) Weighing 20 parts of PO42.5 ordinary Portland cement, 10 parts of modified basalt fiber, 10 parts of 800-mesh fly ash, 10 parts of polymer emulsion and 5 parts of pure water according to parts by mass; uniformly mixing PO42.5 ordinary Portland cement, modified basalt fiber and fly ash to prepare powder, uniformly mixing polymer emulsion and pure water to prepare liquid material, pouring the dry material into the liquid material, and stirring at 20 ℃ and 600r/min for 4min to obtain the novel polymer plastering mortar.
Example 2
The preparation method of the novel polymer surface mortar comprises the following preparation steps:
(1) Uniformly mixing 3-aminopropyl trimethoxy silane and methylene dichloride according to the mass ratio of 1:9, adding triethylamine with the mass of 0.05 times that of the 3-aminopropyl trimethoxy silane, stirring at 2.5 ℃ for 4min at 400r/min, continuously stirring, adding 4-chlorobenzophenone with the same molar amount of the 3-aminopropyl trimethoxy silane, stirring at 2.5 ℃ for 55min at 400r/min, standing at room temperature for 22h, and drying at 15 ℃ at 75Pa for 7h to obtain photoinitiated silane; uniformly mixing polyethylene glycol PEG400, allyl trimethoxy silane and photoinitiated silane according to a molar ratio of 1.5:1:0.15 in a nitrogen atmosphere, adding p-toluenesulfonic acid with the mass of 0.005 times that of the polyethylene glycol PEG400, stirring at 95 ℃ and 400r/min for reaction for 25min, heating to 155 ℃ for continuous stirring for reaction for 7h, cooling to room temperature, and standing at 55 ℃ and 15Pa for 3.5h to obtain photoinitiated organic silicon polyester;
(2) Uniformly mixing basalt fiber with the diameter of 12 mu m and the length of 10mm, photoinitiated organic silicon polyester, absolute ethyl alcohol and pure water according to the mass ratio of 1:2.5:14:5, stirring for 70min at 25 ℃ and 700r/min, filtering, washing for 4 times by using absolute ethyl alcohol, and drying for 7h at 65 ℃ to obtain modified basalt fiber;
(3) Uniformly mixing ethyl acrylate, methyl methacrylate, allyl triethoxysilane, OP-10 emulsifier and pure water according to the mass ratio of 1:1:0.25:0.07:4.5 to prepare monomer emulsion; uniformly mixing ammonium persulfate and pure water according to a mass ratio of 1:35 to prepare a thermal initiation solution; uniformly mixing an OP-10 emulsifier and pure water according to a mass ratio of 1:25 to prepare an emulsified base solution, dropwise adding monomer emulsion with the mass 1.3 times of that of the emulsified base solution and a thermal initiation solution with the mass 0.65 times of that of the emulsified base solution at a uniform speed within 55min under the stirring condition of 400r/min at the temperature of 82.5 ℃, keeping the temperature unchanged for continuous reaction for 2.5h after the dropwise adding, and concentrating at the temperature of 35 ℃ and under the pressure of 75Pa until the water content is 41%, thereby preparing polymer emulsion;
(4) Weighing 25 parts of PO42.5 ordinary Portland cement, 12 parts of modified basalt fiber, 12 parts of 900-mesh fly ash, 12 parts of polymer emulsion and 6 parts of pure water according to parts by mass; uniformly mixing PO42.5 ordinary Portland cement, modified basalt fiber and fly ash to prepare powder, uniformly mixing polymer emulsion and pure water to prepare liquid material, pouring the dry material into the liquid material, and stirring at 25 ℃ and 700r/min for 3.5min to obtain the novel polymer plastering mortar.
Example 3
The preparation method of the novel polymer surface mortar comprises the following preparation steps:
(1) Uniformly mixing 3-aminopropyl trimethoxy silane and methylene dichloride according to the mass ratio of 1:10, adding triethylamine with the mass of 0.06 times that of the 3-aminopropyl trimethoxy silane, stirring at 5 ℃ for 3min at 500r/min, continuously stirring, adding 4-chlorobenzophenone with the same molar weight as the 3-aminopropyl trimethoxy silane, stirring at 5 ℃ for 50min at 500r/min, standing for 20h at room temperature, and drying at 100Pa for 6h at 20 ℃ to obtain photoinitiated silane; uniformly mixing polyethylene glycol PEG400, allyl trimethoxy silane and photoinitiated silane according to a molar ratio of 1.5:1:0.2 in a nitrogen atmosphere, adding p-toluenesulfonic acid with the mass of 0.006 times that of the polyethylene glycol PEG400, stirring at 100 ℃ and 500r/min for reaction for 20min, heating to 160 ℃ for continuous stirring for reaction for 6h, cooling to room temperature, and standing at 60 ℃ and 20Pa for 3h to obtain photoinitiated organic silicon polyester;
(2) Uniformly mixing basalt fiber with the diameter of 15 mu m and the length of 12mm, photoinitiated organic silicon polyester, absolute ethyl alcohol and pure water according to the mass ratio of 1:3:16:6, stirring for 60min at 30 ℃ and 800r/min, filtering, washing for 5 times by using absolute ethyl alcohol, and drying for 6h at 70 ℃ to obtain modified basalt fiber;
(3) Uniformly mixing ethyl acrylate, methyl methacrylate, allyl triethoxysilane, OP-10 emulsifier and pure water according to the mass ratio of 1:1:0.3:0.08:5 to prepare monomer emulsion; uniformly mixing ammonium persulfate and pure water according to a mass ratio of 1:40 to prepare a thermal initiation solution; uniformly mixing an OP-10 emulsifier and pure water according to a mass ratio of 1:30 to prepare an emulsified base solution, dropwise adding monomer emulsion with the mass 1.4 times of that of the emulsified base solution and a thermal initiation solution with the mass 0.7 times of that of the emulsified base solution at a uniform speed within 60 minutes under the stirring condition of 500r/min at the temperature of 85 ℃, keeping the temperature unchanged for continuous reaction for 2 hours after the dropwise adding, and concentrating at the temperature of 40 ℃ under the pressure of 100Pa until the water content is 42%, thus preparing polymer emulsion;
(4) Weighing 30 parts of PO42.5 ordinary Portland cement, 12 parts of modified basalt fiber, 15 parts of 1000-mesh fly ash, 15 parts of polymer emulsion and 7 parts of pure water according to parts by weight; uniformly mixing PO42.5 ordinary Portland cement, modified basalt fiber and fly ash to prepare powder, uniformly mixing polymer emulsion and pure water to prepare liquid material, pouring the dry material into the liquid material, and stirring at 30 ℃ and 800r/min for 3min to obtain the novel polymer plastering mortar.
Comparative example 1
The preparation method of the novel polymer surface mortar comprises the following preparation steps:
(1) Uniformly mixing polyethylene glycol PEG400 and allyltrimethoxysilane according to a molar ratio of 1.5:1.15 in a nitrogen atmosphere, adding p-toluenesulfonic acid with the mass of 0.005 times that of the polyethylene glycol PEG400, stirring at 95 ℃ and 400r/min for reaction for 25min, heating to 155 ℃ for continuous stirring for reaction for 7h, cooling to room temperature, and standing at 55 ℃ and 15Pa for 3.5h to obtain the organosilicon polyester;
(2) Uniformly mixing basalt fiber with the diameter of 12 mu m and the length of 10mm, organic silicon polyester, absolute ethyl alcohol and pure water according to the mass ratio of 1:2.5:14:5, stirring for 70min at 25 ℃ and 700r/min, filtering, washing for 4 times with absolute ethyl alcohol, and drying for 7h at 65 ℃ to obtain modified basalt fiber;
(3) Uniformly mixing ethyl acrylate, methyl methacrylate, allyl triethoxysilane, OP-10 emulsifier and pure water according to the mass ratio of 1:1:0.25:0.07:4.5 to prepare monomer emulsion; uniformly mixing ammonium persulfate and pure water according to a mass ratio of 1:35 to prepare a thermal initiation solution; uniformly mixing an OP-10 emulsifier and pure water according to a mass ratio of 1:25 to prepare an emulsified base solution, dropwise adding monomer emulsion with the mass 1.3 times of that of the emulsified base solution and a thermal initiation solution with the mass 0.65 times of that of the emulsified base solution at a uniform speed within 55min under the stirring condition of 400r/min at the temperature of 82.5 ℃, keeping the temperature unchanged for continuous reaction for 2.5h after the dropwise adding, and concentrating at the temperature of 35 ℃ and under the pressure of 75Pa until the water content is 41%, thereby preparing polymer emulsion;
(4) Weighing 25 parts of PO42.5 ordinary Portland cement, 12 parts of modified basalt fiber, 12 parts of fly ash, 12 parts of polymer emulsion and 6 parts of pure water according to parts by mass; uniformly mixing PO42.5 ordinary Portland cement, modified basalt fiber and fly ash to prepare powder, uniformly mixing polymer emulsion and pure water to prepare liquid material, pouring the dry material into the liquid material, and stirring at 25 ℃ and 700r/min for 3.5min to obtain the novel polymer plastering mortar.
Comparative example 2
The preparation method of the novel polymer surface mortar comprises the following preparation steps:
(1) Uniformly mixing ethyl acrylate, methyl methacrylate, allyl triethoxysilane, OP-10 emulsifier and pure water according to the mass ratio of 1:1:0.25:0.07:4.5 to prepare monomer emulsion; uniformly mixing ammonium persulfate and pure water according to a mass ratio of 1:35 to prepare a thermal initiation solution; uniformly mixing an OP-10 emulsifier and pure water according to a mass ratio of 1:25 to prepare an emulsified base solution, dropwise adding monomer emulsion with the mass 1.3 times of that of the emulsified base solution and a thermal initiation solution with the mass 0.65 times of that of the emulsified base solution at a uniform speed within 55min under the stirring condition of 400r/min at the temperature of 82.5 ℃, keeping the temperature unchanged for continuous reaction for 2.5h after the dropwise adding, and concentrating at the temperature of 35 ℃ and under the pressure of 75Pa until the water content is 41%, thereby preparing polymer emulsion;
(2) Weighing 25 parts of PO42.5 ordinary Portland cement, 12 parts of basalt fiber, 12 parts of fly ash, 12 parts of polymer emulsion and 6 parts of pure water according to parts by mass; uniformly mixing PO42.5 ordinary Portland cement, modified basalt fiber and fly ash to prepare powder, uniformly mixing polymer emulsion and pure water to prepare liquid material, pouring the dry material into the liquid material, and stirring at 25 ℃ and 700r/min for 3.5min to obtain the novel polymer plastering mortar.
Comparative example 3
The preparation method of the novel polymer surface mortar comprises the following preparation steps:
(1) Uniformly mixing 3-aminopropyl trimethoxy silane and methylene dichloride according to the mass ratio of 1:9, adding triethylamine with the mass of 0.05 times that of the 3-aminopropyl trimethoxy silane, stirring at 2.5 ℃ for 4min at 400r/min, continuously stirring, adding 4-chlorobenzophenone with the same molar amount of the 3-aminopropyl trimethoxy silane, stirring at 2.5 ℃ for 55min at 400r/min, standing at room temperature for 22h, and drying at 15 ℃ at 75Pa for 7h to obtain photoinitiated silane; uniformly mixing polyethylene glycol PEG400, allyl trimethoxy silane and photoinitiated silane according to a molar ratio of 1.5:1:0.15 in a nitrogen atmosphere, adding p-toluenesulfonic acid with the mass of 0.005 times that of the polyethylene glycol PEG400, stirring at 95 ℃ and 400r/min for reaction for 25min, heating to 155 ℃ for continuous stirring for reaction for 7h, cooling to room temperature, and standing at 55 ℃ and 15Pa for 3.5h to obtain photoinitiated organic silicon polyester;
(2) Uniformly mixing basalt fiber with the diameter of 12 mu m and the length of 10mm, photoinitiated organic silicon polyester, absolute ethyl alcohol and pure water according to the mass ratio of 1:2.5:14:5, stirring for 70min at 25 ℃ and 700r/min, filtering, washing for 4 times by using absolute ethyl alcohol, and drying for 7h at 65 ℃ to obtain modified basalt fiber;
(3) Uniformly mixing ethyl acrylate, methyl methacrylate, OP-10 emulsifier and pure water according to the mass ratio of 1:1:0.07:4.5 to prepare monomer emulsion; uniformly mixing ammonium persulfate and pure water according to a mass ratio of 1:35 to prepare a thermal initiation solution; uniformly mixing an OP-10 emulsifier and pure water according to a mass ratio of 1:25 to prepare an emulsified base solution, dropwise adding monomer emulsion with the mass 1.3 times of that of the emulsified base solution and a thermal initiation solution with the mass 0.65 times of that of the emulsified base solution at a uniform speed within 55min under the stirring condition of 400r/min at the temperature of 82.5 ℃, keeping the temperature unchanged for continuous reaction for 2.5h after the dropwise adding, and concentrating at the temperature of 35 ℃ and under the pressure of 75Pa until the water content is 41%, thereby preparing polymer emulsion;
(4) Weighing 25 parts of PO42.5 ordinary Portland cement, 12 parts of modified basalt fiber, 12 parts of fly ash, 12 parts of polymer emulsion and 6 parts of pure water according to parts by mass; uniformly mixing PO42.5 ordinary Portland cement, modified basalt fiber and fly ash to prepare powder, uniformly mixing polymer emulsion and pure water to prepare liquid material, pouring the dry material into the liquid material, and stirring at 25 ℃ and 700r/min for 3.5min to obtain the novel polymer plastering mortar.
Effect example
The following table 1 shows the results of performance analysis of the adhesion performance and corrosion resistance performance of the novel polymer coating mortars of examples 1 to 3 and comparative examples 1 to 4 according to the present invention.
TABLE 1
From the comparison of experimental data of examples 1-3 and comparative examples 1-4 in Table 1, it can be found that the novel polymer plastering mortar prepared by the invention has good bonding performance and corrosion resistance.
From comparison of experimental data of examples 1, 2 and 3 and comparative example 1, examples 1, 2 and 3 have high adhesive force and low corrosion amount compared with comparative example 1, which shows that photoinitiated silane is added to introduce photoinitiated groups, and sunlight or artificial ultraviolet lamp irradiation can cause the photoinitiated groups to initiate polymerization of free radical unsaturated bonds to form a crosslinked network during coating use, so that the adhesive property and corrosion resistance are improved; from comparison of experimental data of examples 1, 2 and 3 and comparative example 2, the examples 1, 2 and 3 have high adhesive force and low corrosion amount compared with comparative example 2, which shows that the photoinitiated organosilicon polyester is used for modifying basalt fiber, so that dispersibility is improved, photoinitiated performance is achieved, hydrolysis of the photoinitiated organosilicon polyester can be caused under the conditions of hydration and heating of cement or sun exposure, a large number of silicon hydroxyl chain segments can be formed to be combined with inorganic components, and the structure is more compact and firm, so that bonding performance and corrosion resistance are improved; from comparison of experimental data of examples 1, 2 and 3 and comparative example 3, the examples 1, 2 and 3 have high adhesive force and low corrosion amount compared with comparative example 3, which indicates that the allyl triethoxysilane is added in the preparation process of the polymer emulsion, so that the polymer emulsion and an inorganic interface can be well combined with each other, and the combined inorganic composition is subjected to surface coverage and hydrophobic protection, so that the adhesive property and the corrosion resistance are improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. The preparation method of the novel polymer plastering mortar is characterized by mainly comprising the following preparation steps:
(1) Uniformly mixing polyethylene glycol PEG400, allyl trimethoxy silane and photoinitiated silane according to a molar ratio of 1.5:1:0.1-0.2 in a nitrogen atmosphere, adding p-toluenesulfonic acid which is 0.004-0.006 times of the mass of the polyethylene glycol PEG400, stirring at 90-100 ℃ for reaction for 20-30 min at 300-500 r/min, heating to 150-160 ℃ for continuous stirring for reaction for 6-8 h, cooling to room temperature, and standing at 50-60 ℃ for 3-4 h at 10-20 Pa to obtain photoinitiated organosilicon polyester;
(2) Uniformly mixing basalt fibers, photoinitiated organic silicon polyester, absolute ethyl alcohol and pure water according to a mass ratio of 1:2-3:12-16:4-6, stirring for 60-80 min at 20-30 ℃ and 600-800 r/min, filtering, washing for 3-5 times with absolute ethyl alcohol, and drying for 6-8 h at 60-70 ℃ to obtain modified basalt fibers;
(3) Uniformly mixing a soft monomer, a hard monomer, allyl triethoxysilane, an emulsifier and pure water according to a mass ratio of 1:1:0.2-0.3:0.06-0.08:4-5 to prepare a monomer emulsion; uniformly mixing a thermal initiator and pure water according to a mass ratio of 1:30-40 to prepare a thermal initiation solution; uniformly mixing an OP-10 emulsifier and pure water according to a mass ratio of 1:20-30 to prepare an emulsion base solution, dropwise adding a monomer emulsion with a mass 1.2-1.4 times of that of the emulsion base solution and a heat initiation solution with a mass 0.6-0.7 times of that of the emulsion base solution at a uniform speed within 50-60 min under the stirring condition of 300-500 r/min at the temperature of 80-85 ℃, keeping the temperature unchanged for continuous reaction for 2-3 hours after the dropwise adding, and concentrating at the temperature of 30-40 ℃ at the pressure of 50-100 Pa until the water content is 40-42%, thus preparing a polymer emulsion;
(4) Weighing 20-30 parts of cement, 10-15 parts of modified basalt fiber, 10-15 parts of fly ash, 10-15 parts of polymer emulsion and 5-7 parts of pure water according to parts by mass; mixing cement, modified basalt fiber and fly ash uniformly to prepare powder, mixing polymer emulsion and pure water uniformly to prepare liquid material, pouring the dry material into the liquid material, and stirring at 20-30 ℃ for 3-4 min at 600-800 r/min to obtain the novel polymer plastering mortar.
2. The method for preparing a novel polymer finishing mortar according to claim 1, wherein the method for preparing photoinitiated silane in step (1) comprises the following steps: uniformly mixing 3-aminopropyl trimethoxy silane and methylene dichloride according to the mass ratio of 1:8-10, adding triethylamine with the mass of 0.04-0.06 times that of the 3-aminopropyl trimethoxy silane, stirring for 3-5 min at the temperature of 0-5 ℃ and 300-500 r/min, continuously stirring, adding 4-chlorobenzophenone with the same molar weight of 3-aminopropyl trimethoxy silane, stirring for 50-60 min at the temperature of 0-5 ℃ and 300-500 r/min, standing for 20-24 h at room temperature, and drying for 6-8 h at the temperature of 10-20 ℃ and 50-100 Pa.
3. The method for preparing the novel polymer finishing mortar according to claim 1, wherein the basalt fiber in the step (2) has a diameter of 10-15 μm and a length of 8-12 mm.
4. The method for preparing a novel polymer finishing mortar according to claim 1, wherein the soft monomer in the step (3) is one or more of ethyl acrylate, butyl acrylate and isooctyl acrylate; the hard monomer is one or more of vinyl acetate, styrene, acrylonitrile, methyl methacrylate and acrylamide; the emulsifier is OP-10 emulsifier; the thermal initiator is ammonium persulfate; the water content refers to the mass fraction of pure water in the polymer emulsion.
5. The method for preparing a novel polymer finishing mortar according to claim 1, wherein the cement in the step (4) is PO42.5 portland cement; the fly ash is 800-1000 meshes of fly ash.
CN202310818367.3A 2023-07-05 2023-07-05 Preparation method of novel polymer surface mortar Active CN116535170B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310818367.3A CN116535170B (en) 2023-07-05 2023-07-05 Preparation method of novel polymer surface mortar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310818367.3A CN116535170B (en) 2023-07-05 2023-07-05 Preparation method of novel polymer surface mortar

Publications (2)

Publication Number Publication Date
CN116535170A CN116535170A (en) 2023-08-04
CN116535170B true CN116535170B (en) 2023-09-26

Family

ID=87456365

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310818367.3A Active CN116535170B (en) 2023-07-05 2023-07-05 Preparation method of novel polymer surface mortar

Country Status (1)

Country Link
CN (1) CN116535170B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1226531A (en) * 1998-01-20 1999-08-25 株式会社日本触媒 Cement additive and cement composition using same
CN111676596A (en) * 2019-03-11 2020-09-18 德国昕特玛有限公司 Latex bonded textile fiber structures for architectural applications
KR102269957B1 (en) * 2020-12-09 2021-06-29 바론건설 주식회사 Water inseparable polymer cement mortar and its mixer and concrete structure repair and reinforcement method using the same
CN114539888A (en) * 2022-02-27 2022-05-27 上谷新材料(苏州)有限公司 Strippable dual-curing coating and preparation method thereof
CN116102307A (en) * 2022-12-01 2023-05-12 中南大学 Mortar for airport assembly type runway slurry technology

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1226531A (en) * 1998-01-20 1999-08-25 株式会社日本触媒 Cement additive and cement composition using same
CN111676596A (en) * 2019-03-11 2020-09-18 德国昕特玛有限公司 Latex bonded textile fiber structures for architectural applications
KR102269957B1 (en) * 2020-12-09 2021-06-29 바론건설 주식회사 Water inseparable polymer cement mortar and its mixer and concrete structure repair and reinforcement method using the same
CN114539888A (en) * 2022-02-27 2022-05-27 上谷新材料(苏州)有限公司 Strippable dual-curing coating and preparation method thereof
CN116102307A (en) * 2022-12-01 2023-05-12 中南大学 Mortar for airport assembly type runway slurry technology

Also Published As

Publication number Publication date
CN116535170A (en) 2023-08-04

Similar Documents

Publication Publication Date Title
CN103074011B (en) Single-component water-borne pressure sensitive adhesive for sun-proof and heat-insulating film
CN113913041B (en) High-water-resistance polymer cement waterproof coating and preparation method thereof
CN109626903A (en) Polymer cement waterproof paint and preparation method thereof
CN109111547B (en) Silicone-acrylic modified emulsion waterproof agent and preparation method and application thereof
CN116535170B (en) Preparation method of novel polymer surface mortar
CN115197623A (en) High-damping-performance water-based sound-insulation damping coating for vehicle and preparation method thereof
CN115197610A (en) Waterproof coating with high water resistance and high bonding strength and preparation method thereof
CN110790875B (en) Organic silicon modified acrylic emulsion adhesive and preparation method thereof
CN109081642B (en) Epoxy resin-based concrete for building and preparation process thereof
CN111732446A (en) Concrete curing agent and preparation method thereof
CN115028409B (en) Old wall reconstruction mortar and preparation method thereof
JP4552398B2 (en) Polymer cement composition for waterproofing
CN112194750A (en) Preparation method of environment-friendly acrylic emulsion transparent waterproof adhesive
CN113150353B (en) Preparation method of extruded polystyrene thermal insulation material/mortar covalent bonding system
CN114804800A (en) High-strength environment-friendly gypsum plasterboard and preparation method thereof
CN112573879A (en) Mortar for extruded polystyrene foam plastic insulation board and preparation method thereof
CN111944378A (en) Polymer-based waterproof film, preparation method and application thereof
CN117698233B (en) Multi-layer composite glass fiber super-strong felt and preparation method thereof
CN115873441B (en) Anti-etching waterproof putty and preparation method thereof
CN116376386B (en) Nanoscale silicon dioxide composite heat insulation material and preparation process thereof
CN116330807B (en) High-flame-retardance reinforced aluminum foil veneer and preparation method thereof
RU2753761C1 (en) Fast-setting polymer for dispersing cement and method for its production
CN114716167B (en) Modified water glass for preparing heat-insulating fireproof material
CN117820956B (en) Water-based waterproof paint and preparation method thereof
CN114804787B (en) High-adhesion high-weather-resistance ceramic tile adhesive mortar and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant