CN107986686A - A kind of wet mixing mortar interfacial agents and its preparation method and application - Google Patents
A kind of wet mixing mortar interfacial agents and its preparation method and application Download PDFInfo
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- CN107986686A CN107986686A CN201711254812.9A CN201711254812A CN107986686A CN 107986686 A CN107986686 A CN 107986686A CN 201711254812 A CN201711254812 A CN 201711254812A CN 107986686 A CN107986686 A CN 107986686A
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/30—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds
- C04B26/32—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds containing silicon
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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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
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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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
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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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00491—Primers
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
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- Organic Chemistry (AREA)
- Architecture (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
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Abstract
The invention discloses a kind of wet mixing mortar interfacial agents and its preparation method and application, its key points of the technical solution are that including the component of following parts by weight：25 ~ 30 parts of carboxymethyl starch ether, 5 ~ 10 parts of Isooctyl acrylate monomer, 10 ~ 15 parts of acrylic emulsion film forming matter, 5 ~ 10 parts of polyborosiloxane, 1 ~ 2 part of acrylic acid dispersant, 1 ~ 5 part of film forming agent, 10 ~ 20 parts of 1 ~ 3 part of antioxidant and nanometer reinforcer, by the interfacial agents of the present invention coated on shear wall surface, for wet mixing mortar is directly plastered in shear wall, mortar is increased with shearing the contact area of metope, so as to the shrinkage stress between dispersed mortar and shearing metope, the large area hollowing phenomenon for effectively avoiding shrinkage stress from excessively concentrating on certain and packing up.
Description
Technical field
The present invention relates to construction material, more particularly to a kind of wet mixing mortar interfacial agents and its preparation method and application.
Background technology
Wet mixing mortar refers to cement, sand, mineral admixture, additive and water by a certain percentage in professional production factory through meter
After amount, mixing, place to use is transported to, and the mixture used at the appointed time.Wet mixing mortar can at utmost reduce mortar
Dust pollution during production, transport, use, with reference to mechanical execution, can increase substantially construction efficiency, shorten construction work
Phase.
Zhejiang Province's engineering construction standard《Premixing mortar application technology code》DB33/T 1095-2013 expire wet mixing mortar
The timing definition of sufficient construction period is protects the modeling time, i.e. wet mixing mortar is from adding water to stir, in 23 DEG C ± 2 DEG C of temperature conditionss
Under, deposit in the closed container that do not absorb water, the time when the denseness of mortar drops to the 70% of initial consistency.And provide wet-mixing
The guarantors of mortar certified products mould the time be respectively >=8h, >=12h, >=24h.
In the prior art, the wet mixing mortar for meeting to protect the modeling time is produced, it is wet that precondition is that requirement has quality to reach a standard
Mortar modifier is mixed, wet mixing mortar modifying agent currently on the market is based on fluent material, generally two-component materials, including subtract
Aqua and conditioning agent, are mainly adjusted by the volume of liquid wet mixing mortar modifying agent to control the operable time of wet mixing mortar,
To meet site construction schedule requirement.
But in Practical Project example, the wet mixing mortar of admixture two-component liquid wet mixing mortar modifying agent is cut in concrete
On power wall during plastering construction, since the stiff shrinking percentage of concrete shear force wall and wet mixing mortar is inconsistent, cause to generate contraction
Stress, if shrinkage stress excessively concentrates on certain point and more than the mortar and the tensile bond strength for shearing metope, in the point
Place will produce the quality problems such as hollowing, cracking, and extend to around the point and cause large area hollowing phenomenon.
The content of the invention
The object of the present invention is to provide a kind of wet mixing mortar interfacial agents, help avoid shrinkage stress excessively concentrate on it is a certain
Place and the large area hollowing phenomenon packed up.
The present invention above-mentioned technical purpose technical scheme is that：
A kind of wet mixing mortar interfacial agents, include the component of following parts by weight：25~30 parts of carboxymethyl starch ether, Isooctyl acrylate monomer
5~10 parts, 10~15 parts of acrylic emulsion film forming matter, 5~10 parts of polyborosiloxane, 1~2 part of acrylic acid dispersant, film forming agent 1
10~20 parts of~5 parts, 1~3 part of antioxidant and nanometer reinforcer.
By using above-mentioned technical proposal, a kind of wet mixing mortar interfacial agents are prepared, the interfacial agents of the present invention are coated in and are cut
On power wall surface, for wet mixing mortar is directly plastered in shear wall, mortar is increased with shearing the contact surface of metope
Product, so as to the shrinkage stress between dispersed mortar and shearing metope, effectively avoids shrinkage stress from excessively concentrating on certain
The large area hollowing phenomenon packed up at one；
Carboxymethyl starch ether is that a certain amount of carboxyl is introduced in starch molecule, so point of the carboxymethyl starch compared with common starch
Son amount bigger, and shows the intrinsic property of carboxyl such as hydrophily, complexing etc., can be used as thickener, stabilizer, film forming agent,
The industry-by-industries such as flocculant, binder, dirt-carrying agent；In addition, dry carboxymethyl starch ether viscosity is weaker, work as carboxymethyl starch ether
After meeting water, help to recover the viscosity of the interfacial agents rapidly；
Isooctyl acrylate monomer is a kind of important Organic Chemicals, can be homogeneous poly- as the monomer of homogeneous polymerization or combined polymerization
Compound PMMA is the plastics of water white transparency, is easily worked shaping and toning, can be used to produce organic glass, manufacture other resins,
Plastics, coating, adhesive, lubricant, timber and the size of cork, the penetrant of electrical-coil, paper polish agent, printing and dyeing help
Agent and insulating potting material etc.；
Acrylic emulsion film forming matter is a heterogeneous dispersion liquid, by many polymer particles groups in a continuous water phase
Into when water is gradually evaporated or absorbed by porous surface, disperse phase concentration gradually increases, these polymer particles just slowly connect
Closely, interparticle distance is contacted with each other between final particle from diminution, starts to produce condensation, moisture continues to reduce at this time, polymer particle
Contact is closer, then forms tiny capillary between particles, and the effect of capillary force promotes polymer to be formed thin from sticking
Film, acrylic emulsion film forming matter help to improve the amalgamation between each component in system；
Polyborosiloxane is a kind of novel low-toxicity, anti-molten drop, environmental-friendly halogen-free flame retardants, it is excellent in imparting high polymer
While flame-proof smoke-suppressing, moreover it is possible to improve the processing performance of material and improve the mechanical strength of material, particularly low-temperature impact
Performance；
Nanometer reinforcer helps to improve the tensile strength and hardness of the boundary layer；
Acrylic acid dispersant, film forming agent and antioxidant are added in system, help to ensure that film forming matter film-forming state in system
Stability, and there is excellent dispersiveness, the interfacial agents of the present invention be sprayed on concrete shear force wall, are helped to improve
The dispersiveness on concrete shear force wall surface, avoids shrinkage stress from excessively concentrating on certain point and causes hollowing, cracking phenomena.
The present invention is further arranged to：Viscosity of the carboxymethyl starch ether in 25 DEG C is 400-1200mpas.
By using above-mentioned technical proposal, limit that the viscosity of carboxymethyl starch ether is very crucial, and viscosity is more than 1200mpa
For the carboxymethyl starch ether of s since viscosity is too big, carboxymethyl starch ether easily produces unity, and if the viscosity of carboxymethyl starch ether is low
In 400mpas, adhesive force of the carboxymethyl starch ether on concrete shear force wall is relatively low, is unfavorable for the coating of the interfacial agents, institute
It is advisable with limiting the viscosity of carboxymethyl starch ether between 400-1200mpas.
The present invention is further arranged to：The substitution value of the carboxymethyl starch ether is 0.5-0.8.
By using above-mentioned technical proposal, substitution value refers to introduce carboxymethyl in the diverse location of the pyrans group of starch ether
Number, limit the substitution value of carboxymethyl starch ether as 0.5-0.8, it is strong to improve overall bonding by the introducing of substituent
Degree, can make the requirement for the adhesion strength that product reaches during normal use, while product stability is improved.
The present invention is further arranged to：Contain anionic polymerization thing microballoon in the acrylic emulsion film forming matter.
By using above-mentioned technical proposal, the preparation of anionic polymerization thing microballoon is described in detail in embodiment, bear from
For the diameter range of sub- polymer microballoon between 20-60 μm, anionic polymerization thing microballoon has the energy of very strong release anion
Power, anion can purify the peculiar smell and pernicious gas in air, elimination air；Meanwhile anionic polymerization thing microballoon contributes to
The dispersion performance of acrylic emulsion film forming matter is further improved, cohesion of the acrylic acid film forming matter in interfacial agents system is solved and asks
Topic.
The present invention is further arranged to：The nanometer reinforcer includes nano-calcium carbonate, nano silicon dioxide, talcum powder
At least one of.
By using above-mentioned technical proposal, nano-calcium carbonate is also known as super fine calcium carbonate, can improve plastic products processing
During mobility, improve its mouldability, also with excellent dispersion performance, may be homogenously dispersed in system；Nano-silica
SiClx is the white powder of ultrafine nanometer, can uniformly be attached to the surface of acrylic emulsion film forming matter, improve the interfacial agents
Tensile strength and hardness, meanwhile, it is capable to improve the processing fluidity of blend, make the composite material of processing homogeneous, intensity
It is higher；Talcum powder is powder of the fine white without grittiness, have excellent lubricity, anti-stickiness, acid-resisting, chemical stability,
Good covering power and flexibility, serves as activeness and quietness auxiliary material in the system, increases the tension stress intensity of interfacial agents, cuts
Shearing stress, Reducing distortion expansion and contraction and thermal coefficient of expansion, may be homogenously dispersed between acrylic emulsion film forming matter and other components
In gap；Any one in above-mentioned three kinds of reinforcers is added in interfacial agents system, has preferable dispersiveness and fillibility,
Help to improve the tensile strength and hardness of boundary layer.
The present invention is further arranged to：The nanometer reinforcer is after polyborosiloxane molten liquid parcel, at -40 DEG C
Lower progress cryogenic freezing 24h, carries out 20~40min of high temperature sintering at 300~320 DEG C after freezing, body to be sintered is cooled to room
Crushed after temperature.
By using above-mentioned technical proposal, polyborosiloxane carries out high-temperature fusion, and nanometer reinforcer is infiltrated in poly- boron
In siloxanes molten liquid, molten liquid wraps up nanometer reinforcer, and inclusion enclave is placed in crucible and is carried out at -40 DEG C
Cryogenic freezing 24h, is crushed, contributes to polyborosiloxane strand again after then carrying out high temperature sintering at 300~320 DEG C
Preferably combined with inorganic nano group, while the compatibility between boundary layer and concrete shear metope can be improved.
Another object of the present invention is to disclose a kind of preparation method of wet mixing mortar interfacial agents, include the following steps：
(1) dispensing：Weigh 25~30 parts of carboxymethyl starch ether, 5~10 parts of Isooctyl acrylate monomer, acrylic emulsion film forming matter 10~
15 parts, 5~10 parts of polyborosiloxane, 1~2 part of acrylic acid dispersant, 1~5 part of film forming agent, 1~3 part of antioxidant and nanometer strengthen
10~20 parts of filler；
(2) pre-process：A, drying process；B, nanometer reinforcer inclusion enclave, wherein nanometer reinforcer and polyborosiloxane
Rate of charge is 2：1；
(3) into retort add carboxymethyl starch ether, Isooctyl acrylate monomer, acrylic emulsion film forming matter, acrylic acid dispersant,
Film forming agent and antioxidant, are warming up to 120~150 DEG C, carry out being sufficiently stirred 1~1.5h；
(4) 150~180 DEG C are warming up to, a nanometer reinforcer inclusion enclave is continuously added, is sufficiently stirred；
(5) mixture after step (4) is stirred is cooled down at room temperature, and is crushed to average grain diameter as 100~200 μm.
By using above-mentioned technical proposal, carboxymethyl starch ether, Isooctyl acrylate monomer, acrylic emulsion are formed a film first
Thing, acrylic acid dispersant, film forming agent and antioxidant are stirred, and preparation forms uniform mixed liquor, are then raised temperature and are added
Nanometer reinforcer inclusion enclave, nanometer reinforcer is more preferable with the compatibility of inorganic material after parcel, helps to improve this
Adhesive force of the boundary layer on concrete shear force wall.
Another object of the present invention is to disclose a kind of plastering technique of wet mixing mortar on shear wall, including following step
Suddenly：
(1) dispensing：Weigh 100~120 parts of cement, 30~40 parts of admixture, 10~15 parts of fine sand, 1~3 part of additive and interface
10~15 parts of agent；
(2) batch mixing：Cement, admixture, fine sand and additive are sufficiently stirred；
(3) mortar, dust, dirt of substrate surface are cleaned with water totally first, is dried after washing down；
(4) and then by interfacial agents even application in substrate surface, boundary layer is uniform；
(5) step (2) mixed material is applied on boundary layer, every time thickness is 5~7mm, should be layered a point time floating.
By using above-mentioned technical proposal, the sprayed interfacial layer on concrete shear force wall, wet-mixing sand of plastering on boundary layer
Slurry, boundary layer help to increase the contact area of shear wall and wet mixing mortar, reduce between wet mixing mortar and concrete shear force wall
Inconsistent shrinkage stress, so as to improve the compatibility between wet mixing mortar and concrete shear force wall.
In conclusion the invention has the advantages that：
1st, the invention discloses a kind of wet mixing mortar interfacial agents, which is sprayed on shear wall surface, then by wet-mixing sand
Slurry plastering on boundary layer, using boundary layer can dispersed wet mixing mortar and shearing metope between shrinkage stress so that
The large area hollowing phenomenon for avoiding shrinkage stress from excessively concentrating on certain and packing up；
2nd, interfacial agents use carboxymethyl starch ether and Isooctyl acrylate monomer, acrylic emulsion film forming matter, polyborosiloxane, acrylic acid
Dispersant, film forming agent, antioxidant and nanometer reinforcer carry out compatibility, and each component source is easy to get, and preparation process is simple, and right
The adhesive force of shear wall is good；
3rd, interfacial agents are sprayed on shearing metope, after plastering wet mixing mortar is continued, the carboxymethyl starch ether in interfacial agents is met
Water can recover viscosity rapidly, so as to significantly improve adhesion of the boundary layer in shearing metope；
4th, the nanometer reinforcer after polyborosiloxane wraps up is added in interfacial agents, contributes to polyborosiloxane strand and nothing
Machine nanometer group preferably combines, while can improve the compatibility between boundary layer and concrete shear metope.
Embodiment
The present invention is described in further detail with reference to embodiments.
The specific preparation method for the acrylic emulsion film forming matter that the present invention refers to is as follows：(1) pre-emulsification：Add into reaction bulb
Enter 100 parts of water, 3 parts of emulsifying agents, 5 parts of acrylamides, under agitation add 5 parts of styrene, 10 parts of butyl acrylates, 10 parts
Acrylic acid, prepares the white pre-emulsion of no layering；(2) it polymerize：Into reaction bulb add 100 parts of water, 1 part of initiator, 10 parts
Pre-emulsion and 5 parts of ammonium persulfate aqueous solutions, after being warming up to 65 DEG C, keep the temperature 1h, ammonium hydroxide is neutralized between pH=7.5~8.
The specific preparation method for the anionic polymerization thing microballoon that the present invention refers to is as follows：(1) benzoyl peroxide is dissolved
In anion slurry；(2) addition water, polyvinyl alcohol stir and are passed through nitrogen in reaction bulb, are warming up to 40 DEG C；(3) (1) is fallen
Enter in (2), stir 1~2h；(4) 70 DEG C are warming up to, closes nitrogen, keeps the temperature 2h.
Embodiment one：
A kind of preparation method of wet mixing mortar interfacial agents, includes the following steps：
(1) 25 parts of carboxymethyl starch ether, 5 parts of Isooctyl acrylate monomer, 10 parts of acrylic emulsion film forming matter, polyborosiloxane 5 are weighed
10 parts of part, 1 part of acrylic acid dispersant, 1 part of film forming agent, 1 part of antioxidant and nano silicon dioxide；
(2) pre-process：A, drying process；B, nanoreinforcement material inclusion enclave：Nano silicon dioxide is melted by polyborosiloxane
After liquid parcel, cryogenic freezing 24h is carried out at -40 DEG C, carries out high temperature sintering 30min after freezing at 300 DEG C, body to be sintered is cold
But to being crushed after room temperature；
(3) into retort add carboxymethyl starch ether, Isooctyl acrylate monomer, acrylic emulsion film forming matter, acrylic acid dispersant,
Film forming agent and antioxidant, are warming up to 120 DEG C, carry out being sufficiently stirred 1h；
(4) 160 DEG C are warming up to, nano silicon dioxide inclusion enclave is continuously added, is sufficiently stirred；
(5) mixture after step (4) is stirred is cooled down at room temperature, and is crushed to average grain diameter as 150 μm.
Embodiment two：
A kind of preparation method of wet mixing mortar interfacial agents, includes the following steps：
(1) 27 parts of carboxymethyl starch ether, 7 parts of Isooctyl acrylate monomer, 12 parts of acrylic emulsion film forming matter, polyborosiloxane 6 are weighed
12 parts of part, 1 part of acrylic acid dispersant, 1 part of film forming agent, 1 part of antioxidant and nano-calcium carbonate；
(2) pre-process：A, drying process；B, nanoreinforcement material inclusion enclave：Nano-calcium carbonate passes through polyborosiloxane molten liquid
After parcel, cryogenic freezing 24h is carried out at -40 DEG C, carries out high temperature sintering 30min, body cooling to be sintered after freezing at 300 DEG C
Crushed after to room temperature；
(3) into retort add carboxymethyl starch ether, Isooctyl acrylate monomer, acrylic emulsion film forming matter, acrylic acid dispersant,
Film forming agent and antioxidant, are warming up to 140 DEG C, carry out being sufficiently stirred 1h；
(4) 160 DEG C are warming up to, nano-calcium carbonate inclusion enclave is continuously added, is sufficiently stirred；
(5) mixture after step (4) is stirred is cooled down at room temperature, and is crushed to average grain diameter as 150 μm.
Embodiment three：
A kind of preparation method of wet mixing mortar interfacial agents, includes the following steps：
(1) 28 parts of carboxymethyl starch ether, 10 parts of Isooctyl acrylate monomer, 10 parts of acrylic emulsion film forming matter, polyborosiloxane 7 are weighed
14 parts of part, 2 parts of acrylic acid dispersant, 1 part of film forming agent, 1 part of antioxidant and talcum powder；
(2) pre-process：A, drying process；B, nanoreinforcement material inclusion enclave：Talcum powder is wrapped up by polyborosiloxane molten liquid
Afterwards, cryogenic freezing 24h is carried out at -40 DEG C, carries out high temperature sintering 30min after freezing at 300 DEG C, body to be sintered is cooled to room
Crushed after temperature；
(3) into retort add carboxymethyl starch ether, Isooctyl acrylate monomer, acrylic emulsion film forming matter, acrylic acid dispersant,
Film forming agent and antioxidant, are warming up to 120 DEG C, carry out being sufficiently stirred 1h；
(4) 160 DEG C are warming up to, talcum powder inclusion enclave is continuously added, is sufficiently stirred；
(5) mixture after step (4) is stirred is cooled down at room temperature, and is crushed to average grain diameter as 150 μm.
Example IV：
A kind of preparation method of wet mixing mortar interfacial agents, includes the following steps：
(1) 30 parts of carboxymethyl starch ether, 8 parts of Isooctyl acrylate monomer, 15 parts of acrylic emulsion film forming matter, polyborosiloxane 10 are weighed
20 parts of part, 2 parts of acrylic acid dispersant, 1 part of film forming agent, 1 part of antioxidant and nano silicon dioxide；
(2) pre-process：A, drying process；B, nanoreinforcement material inclusion enclave：Nano silicon dioxide is melted by polyborosiloxane
After liquid parcel, cryogenic freezing 24h is carried out at -40 DEG C, carries out high temperature sintering 30min after freezing at 300 DEG C, body to be sintered is cold
But to being crushed after room temperature；
(3) into retort add carboxymethyl starch ether, Isooctyl acrylate monomer, acrylic emulsion film forming matter, acrylic acid dispersant,
Film forming agent and antioxidant, are warming up to 120 DEG C, carry out being sufficiently stirred 1h；
(4) 160 DEG C are warming up to, nano silicon dioxide inclusion enclave is continuously added, is sufficiently stirred；
(5) mixture after step (4) is stirred is cooled down at room temperature, and is crushed to average grain diameter as 150 μm.
Embodiment five：
A kind of plastering technique of wet mixing mortar on shear wall, includes the following steps：
(1) dispensing：Weigh 1 part of 100 parts of cement, 30 parts of admixture, 10 parts of fine sand, additive interfacial agents prepared with embodiment one
10 parts；
(2) batch mixing：Cement, admixture, fine sand and additive are sufficiently stirred；
(3) mortar, dust, dirt of substrate surface are cleaned with water totally first, is dried after washing down；
(4) and then by interfacial agents uniformly it is sprayed in substrate surface, boundary layer is uniform；
(5) batch mixing in step (2) is applied on boundary layer, every time thickness is 5~7mm, should be layered a point time floating.
Embodiment six：
A kind of plastering technique of wet mixing mortar on shear wall, includes the following steps：
(1) dispensing：Weigh 2 parts of 110 parts of cement, 35 parts of admixture, 12 parts of fine sand, additive interfacial agents prepared with embodiment two
12 parts；
(2) batch mixing：Cement, admixture, fine sand and additive are sufficiently stirred；
(3) mortar, dust, dirt of substrate surface are cleaned with water totally first, is dried after washing down；
(4) and then by interfacial agents uniformly it is sprayed in substrate surface, boundary layer is uniform；
(5) batch mixing in step (2) is applied on boundary layer, every time thickness is 5~7mm, should be layered a point time floating.
Embodiment seven：
A kind of plastering technique of wet mixing mortar on shear wall, includes the following steps：
(1) dispensing：Weigh 3 parts of 120 parts of cement, 40 parts of admixture, 15 parts of fine sand, additive interfacial agents prepared with embodiment three
15 parts；
(2) batch mixing：Cement, admixture, fine sand and additive are sufficiently stirred；
(3) mortar, dust, dirt of substrate surface are cleaned with water totally first, is dried after washing down；
(4) and then by interfacial agents uniformly it is sprayed in substrate surface, boundary layer is uniform；
(5) batch mixing in step (2) is applied on boundary layer, every time thickness is 5~7mm, should be layered a point time floating.
Comparative example：
A kind of plastering technique of wet mixing mortar on shear wall, includes the following steps：
(1) dispensing：Weigh 120 parts of cement, 40 parts of admixture, 15 parts of fine sand, 3 parts of additive；
(2) batch mixing：Cement, admixture, fine sand and additive are sufficiently stirred；
(3) mortar, dust, dirt of substrate surface are cleaned with water totally first, is dried after washing down；
(4) batch mixing in step (2) is applied on shearing metope, every time thickness is 5~7mm, should be layered a point time floating.
Detection means：
Strength test：According to《Test method for strength of hydraulic cement mortar (ISO methods)》, prepare the glue sand examination of 40mm × 40mm × 160mm
Part, dries surface moisture, and anti-folding, compression test are carried out using automatic testing machine of folding strength and compression Strength testing machine.
By upper table, plastering technique using the present invention, obtained shear wall surface has excellent flexural strength
With compression strength, show wet mixing mortar in the solidification process on shear wall surface, interfacial agents are conducive to reduce wet mixing mortar with cutting
Drying shrinkage between power wall surface is inconsistent, so as to avoid the hollowing problem that shear wall surface produces in the prior art.
This specific embodiment is only explanation of the invention, it is not limitation of the present invention, people in the art
Member as needed can make the present embodiment the modification of no creative contribution after this specification is read, but as long as at this
All protected in the right of invention be subject to Patent Law.
Claims (8)
1. a kind of wet mixing mortar interfacial agents, it is characterised in that include the component of following parts by weight：Carboxymethyl starch ether 25 ~ 30
Part, 5 ~ 10 parts of Isooctyl acrylate monomer, 10 ~ 15 parts of acrylic emulsion film forming matter, 5 ~ 10 parts of polyborosiloxane, acrylic acid point
10 ~ 20 parts of 1 ~ 2 part of powder, 1 ~ 5 part of film forming agent, 1 ~ 3 part of antioxidant and nanometer reinforcer.
A kind of 2. wet mixing mortar interfacial agents according to claim 1, it is characterised in that：The carboxymethyl starch ether is 25
Viscosity in DEG C is 400-1200mpas.
A kind of 3. wet mixing mortar interfacial agents according to claim 1, it is characterised in that：The substitution of the carboxymethyl starch ether
Spend for 0.5-0.8.
A kind of 4. wet mixing mortar interfacial agents according to claim 1, it is characterised in that：In the acrylic emulsion film forming matter
Contain anionic polymerization thing microballoon.
A kind of 5. wet mixing mortar interfacial agents according to claim 1, it is characterised in that：The nanometer reinforcer includes receiving
At least one of rice calcium carbonate, nano silicon dioxide, talcum powder.
A kind of 6. wet mixing mortar interfacial agents according to claim 5, it is characterised in that：The nanometer reinforcer is by poly-
After Borosiloxane molten liquid parcel, cryogenic freezing 24h is carried out at -40 DEG C, carries out high temperature sintering after freezing at 300 ~ 320 DEG C
20 ~ 40min, body to be sintered are crushed after being cooled to room temperature.
7. a kind of preparation method of wet mixing mortar interfacial agents, it is characterised in that include the following steps：
（1）Dispensing：Weigh 25 ~ 30 parts of carboxymethyl starch ether, 5 ~ 10 parts of Isooctyl acrylate monomer, acrylic emulsion film forming matter
10 ~ 15 parts, 5 ~ 10 parts of polyborosiloxane, 1 ~ 2 part of acrylic acid dispersant, 1 ~ 5 part of film forming agent, 1 ~ 3 part of antioxidant with
10 ~ 20 parts of reinforcer of nanometer；
（2）Pretreatment：A, drying process；B, nanometer reinforcer inclusion enclave, wherein nanometer reinforcer and polyborosiloxane
Rate of charge is 2：1；
（3）Into retort add carboxymethyl starch ether, Isooctyl acrylate monomer, acrylic emulsion film forming matter, acrylic acid dispersant,
Film forming agent and antioxidant, are warming up to 120 ~ 150 DEG C, carry out being sufficiently stirred 1 ~ 1.5h；
（4）150 ~ 180 DEG C are warming up to, a nanometer reinforcer inclusion enclave is continuously added, is sufficiently stirred；
（5）By step（4）Mixture after stirring is cooled down at room temperature, and is crushed to average grain diameter as 100 ~ 200 μm.
8. plastering technique of a kind of wet mixing mortar on shear wall, it is characterised in that include the following steps：
（1）Dispensing：Weigh 100 ~ 120 parts of cement, 30 ~ 40 parts of admixture, 10 ~ 15 parts of fine sand, 1 ~ 3 part of additive and boundary
10 ~ 15 parts of face agent；
（2）Batch mixing：Cement, admixture, fine sand and additive are sufficiently stirred；
（3）The mortar, dust, dirt of substrate surface are cleaned with water totally first, are dried after washing down；
（4）Then by interfacial agents even application in substrate surface, boundary layer is uniform；
（5）By step（2）In batch mixing be applied on boundary layer, every all over thickness be 5 ~ 7mm, should be layered point a time floating.
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| CN113003986A (en) * | 2021-04-23 | 2021-06-22 | 湖南永恒建筑节能材料有限公司 | Special interface agent for gypsum mortar and construction method thereof |
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