CN108455894A - A kind of polymeric additive and its application - Google Patents

A kind of polymeric additive and its application Download PDF

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Publication number
CN108455894A
CN108455894A CN201810278643.0A CN201810278643A CN108455894A CN 108455894 A CN108455894 A CN 108455894A CN 201810278643 A CN201810278643 A CN 201810278643A CN 108455894 A CN108455894 A CN 108455894A
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CN
China
Prior art keywords
polymer
parts
water
polymeric additive
concrete
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.)
Withdrawn
Application number
CN201810278643.0A
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Chinese (zh)
Inventor
张春松
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.)
Wuhu Exhibition Of New Materials Science And Technology Services Co Ltd
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Wuhu Exhibition Of New Materials Science And Technology Services Co Ltd
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Application filed by Wuhu Exhibition Of New Materials Science And Technology Services Co Ltd filed Critical Wuhu Exhibition Of New Materials Science And Technology Services Co Ltd
Priority to CN201810278643.0A priority Critical patent/CN108455894A/en
Publication of CN108455894A publication Critical patent/CN108455894A/en
Withdrawn legal-status Critical Current

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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
    • C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039Premixtures of ingredients
    • 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
    • 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
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00241Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00293Materials impermeable to liquids
    • 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
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20Resistance against chemical, physical or biological attack

Abstract

The invention discloses a kind of polymeric additives, are related to cement concrete additive technology field, which uses the polymer of obstructed function:Polymer emulsion, water-soluble polymer, dispersible polymer powder and silicon dioxide gel are mutually coordinated compound, polymer is stored by itself a large amount of pore or three-dimensional space net structure or release moisture, make water gradually to maturing internal migration, to enhance impermeability, chemical resistance, improve the comprehensive performance of cement concrete, condensation reaction further occurs between hydroxyl in the silicone hydroxyl and concrete surface and capillary channel on the silicon dioxide gel surface of addition and generates netted organic siliconresin, the close performance of reality for improving cement concrete can be more advantageous to, reduce harmful substance such as water, the entrance of ion and gas is physically or chemically corroded caused by cement concrete pavement, the polymeric additive of the present invention is mainly used in concrete field.

Description

A kind of polymeric additive and its application
Technical field
The invention belongs to building material technical fields, are related to concrete additive technical field, and in particular to a kind of polymerization Object additive and its application.
Background technology
Cement concrete has intensity height, bearing capacity big and not only has abundant resource at home, therefore at home Using than wide.But the defects of cement concrete material tensile strength is relatively low, and road surface brittleness is larger leads to coagulating cement civil engineering It builds material and will appear crack, corner part separates existing phenomenon of rupture, in consideration of it, the various aspects of performance for improving cement concrete is compeled in eyebrow Eyelash.
Polymer shows unique flexibility and viscoelasticity because of the relaxation exercise of its macromolecular chain segment, can be in cement Polymer film is formed inside sill, changes the structure of cement-based material, enhances its mobility, cohesiveness, impermeability, anticorrosive Property and the performances such as mechanical strength, polymer cement concrete (PCC) be to replace cement to make with high molecular polymer or monomer segment It is formulated along with aggregate for cementing material.The addition of polymer makes the endurance quality of concrete increase, cement with Cohering between aggregate is reinforced, in hydrated cementitious and hardening process, the various active groups in polymer and cement water The ion changed in product reacts, and forms special bridged bond effect, or strong with gel nanostructure interaction raising cohesion Degree, enhances impermeability;And it is simple for process, modified effect is apparent, and cost is relatively low, is widely used.
Invention content
According to the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to propose a kind of polymeric additive And its application, in order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is:
A kind of polymeric additive, is made of polymer material, and the polymer material includes following parts by weight ingredient:It is poly- Close 40-60 parts of object lotion, 10-20 parts of water-soluble polymer, 15-20 parts of dispersible polymer powder, silicon dioxide gel 8-15 Part.
Preferably, the polymer material includes following parts by weight ingredient:55 parts of polymer emulsion, water-soluble polymer 18 Part, 18 parts of dispersible polymer powder, 10 parts of silicon dioxide gel.
Preferably, it is 1 that the polymer emulsion, which is mass ratio,:The polystyrene emulsion of 0.5-2 and the mixing of butadiene-styrene latex Object, polymer emulsion have good water resistance, alkali resistance and weatherability, and film-forming temperature is low, can be formed in mortar and water Mud hydrated product has the film of good cohesion, so as to improve the workability of fresh mortar.
Preferably, the water-soluble polymer is one in polyvinyl alcohol, carboxymethyl cellulose or hydroxypropylation cellulose Kind, water-soluble polymer has many advantages, such as salt-resistance, dispersibility, flocculability and increasing stick, can be used for improving the power of cement mortar Performance and Sulfate Corrosion Resistance are learned, the bond strength of cement mortar is improved.
Preferably, it is 1 that the dispersible polymer powder, which is mass ratio,:1.2-1.5 ethene-vinyl acetate copolymer and Polypropylene fibre mixture reduces the internal voids of hardened mortar, improves impervious.
Preferably, dioxide-containing silica is 35-55% in the silicon dioxide gel.
Preferably, the polymeric additive is applied to concrete field.
Compared with prior art, beneficial effects of the present invention:
1. polymeric additive prepared by the present invention is mutually coordinated compound using the polymer of obstructed function, polymer passes through Itself a large amount of pore or three-dimensional space net structure storage or release moisture, make water gradually to maturing internal migration, The progress of inside concrete hydration reaction is maintained to form micro- Maintenance Mechanism, reduces rate of self-contraction;Form ventilative high score Sub- film is wrapped in the surface of cement mortar, changes the structure of cementitious material-aggregate transition region, and the addition of polymer reduces water Original gap and crackle in cement concrete improve the comprehensive of cement concrete to enhance impervious, chemical resistance Energy.
2. the silicon dioxide gel added in the present invention is due to the silicone hydroxyl and concrete table of its unique structured surface Condensation reaction further occurs between hydroxyl in face and capillary channel and generates netted organic siliconresin, is aoxidized by stable silicon Key is learned, silicone molecules are securely attached in concrete surface and capillary channel, raising cement concrete can be more advantageous to The close performance of reality, reduce harmful substance such as water, ion and gas entrance caused by cement concrete pavement physically or chemically It corrodes.
Specific implementation mode
It below by the description to embodiment, is described in further detail, to help those skilled in the art to this hair Bright inventive concept, technical solution have more complete, accurate and deep understanding.
Embodiment 1
Polymeric additive in the present embodiment, including following parts by weight ingredient:55 parts of polymer emulsion, water-soluble polymer 18 parts, 18 parts of dispersible polymer powder, 10 parts of silicon dioxide gel, wherein polymer emulsion is that mass ratio is 1:1.5 it is poly- The mixture of styrene emulsion and butadiene-styrene latex, water-soluble polymer are carboxymethyl cellulose, and dispersible polymer powder is matter Amount is than being 1:1.3 ethene-vinyl acetate copolymer and polypropylene fibre mixture, dioxide-containing silica in silicon dioxide gel It is 45%.
The preparation process of polymeric additive is:A component is weighed by above-mentioned formula, 18 parts of carboxymethyl celluloses are dissolved in It in the deionized water of equivalent, is stirred at rotating speed 200r/min to being completely dissolved, the silica that grain size 200nm is then added contains The silicon dioxide gel of amount 45% is made A and mixes liquid in power 200w, the supersound process 10min of 20Hz;
To be 1 by mass ratio:18 parts of 1.3 ethene-vinyl acetate copolymer and polypropylene fibre mixing are dispersible poly- It is 1 to close object powder and be added to 55 parts by mass ratio:The polymer emulsion of 1.5 polystyrene emulsion and the mixing of butadiene-styrene latex In, it is ultrasonically treated 15min at power 150w, 25Hz, B is made and mixes liquid;Then A liquid is mixed to be added in the mixed liquid of B, it is same being added dropwise When, the 30min to after dripping off is stirred under 35 DEG C of constant temperature, rotating speed 500r/min, obtains polymeric additive.
Polymeric additive in use, first by water and polymeric additive hand operated mixing, object additive to be polymerized It spreads out, is then selected again according to the application of cement concrete in Practical Project with progress mechanical agitation of gathering materials in water Select the match ratio of different cement concretes.The additive amount of polymeric additive is 5-10%.
Embodiment 2
The present embodiment is with embodiment 1, the difference is that polymeric additive is made of following parts by weight ingredient in the present embodiment: 40 parts of polymer emulsion, 10 parts of water-soluble polymer, 15 parts of dispersible polymer powder, 8 parts of silicon dioxide gel, wherein two Dioxide-containing silica is 55% in silica sol.
Embodiment 3
The present embodiment is with embodiment 1, the difference is that polymeric additive is made of following parts by weight ingredient in the present embodiment: 60 parts of polymer emulsion, 20 parts of water-soluble polymer, 20 parts of dispersible polymer powder, 15 parts of silicon dioxide gel, wherein poly- It is 1 that conjunction object lotion, which is mass ratio,:0.5 polystyrene emulsion and the mixture of butadiene-styrene latex, water-soluble polymer are polyethylene Alcohol.
Embodiment 4
The embodiment 1-3 polymeric additive prepared is tested for the property, the match ratio of the cement concrete selected for Cement:Water:Sand:Rubble=1:0.4:1.65:5.15, the bending tensile strength testing result of cement concrete is shown in Table 1.
The flexural tensile strength testing result of 1 cement concrete of table
The solids in polar group absorption hydrolysis product of cement in water-soluble polymer, make to build bridge and shape between particle It is mutually wound at big aggregation, and with the continuous space reticular structure of hardened cement paste, the structure of cement slurry is played Reinforcement effect improves the flexural strength of cement slurry.
Polymer emulsion has good water resistance, alkali resistance and weatherability, and film-forming temperature is low, can be formed in mortar The film for having good cohesion with hydrolysis product of cement, so as to improve the workability of fresh mortar, mortar is good after assigning hardening Bond strength, excellent mechanical property, anti-permeability performance, flexibility and durability.
The present invention is exemplarily described above in conjunction with specific embodiment, it is clear that the present invention implements not by upper The limitation of mode is stated, if the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is used, or It is not improved by the present invention design and technical solution directly apply to other occasions, protection scope of the present invention it It is interior.Protection scope of the present invention should be determined by the scope of protection defined in the claims.

Claims (7)

1. a kind of polymeric additive, is made of polymer material, which is characterized in that the polymer material includes following weight Part ingredient:40-60 parts of polymer emulsion, 10-20 parts of water-soluble polymer, 15-20 parts of dispersible polymer powder, silica 8-15 parts of colloidal sol.
2. polymeric additive according to claim 1, which is characterized in that the polymer material includes following parts by weight Ingredient:55 parts of polymer emulsion, 18 parts of water-soluble polymer, 18 parts of dispersible polymer powder, 10 parts of silicon dioxide gel.
3. polymeric additive according to claim 1, which is characterized in that the polymer emulsion is that mass ratio is 1: The polystyrene emulsion of 0.5-2 and the mixture of butadiene-styrene latex.
4. polymeric additive according to claim 1, which is characterized in that the water-soluble polymer be polyvinyl alcohol, One kind in carboxymethyl cellulose or hydroxypropylation cellulose.
5. polymeric additive according to claim 1, which is characterized in that the dispersible polymer powder is mass ratio It is 1:1.2-1.5 ethene-vinyl acetate copolymer and polypropylene fibre mixture.
6. polymeric additive according to claim 1, which is characterized in that silica contains in the silicon dioxide gel Amount is 35-55%.
7. according to the application of any polymeric additives of claim 1-6, which is characterized in that the polymeric additive Applied to concrete field.
CN201810278643.0A 2018-03-31 2018-03-31 A kind of polymeric additive and its application Withdrawn CN108455894A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109133766A (en) * 2018-08-29 2019-01-04 佛山朝鸿新材料科技有限公司 A kind of preparation method of high-strength waterproof benefit clay

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103964737A (en) * 2014-04-25 2014-08-06 纳谷新材料(杭州)有限公司 Nano-silicon-modified double-component wear-resistant penetration hardener and preparation method thereof
CN104844078A (en) * 2015-04-03 2015-08-19 杭州泰正建材有限公司 Polymer repairing mortar and preparation method thereof
CN104986988A (en) * 2015-07-02 2015-10-21 青岛文创科技有限公司 Two-component permeation type liquid hardening agent and preparation method thereof
CN106699006A (en) * 2017-01-20 2017-05-24 湖北省路桥集团有限公司 Concrete sealing curing agent

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103964737A (en) * 2014-04-25 2014-08-06 纳谷新材料(杭州)有限公司 Nano-silicon-modified double-component wear-resistant penetration hardener and preparation method thereof
CN104844078A (en) * 2015-04-03 2015-08-19 杭州泰正建材有限公司 Polymer repairing mortar and preparation method thereof
CN104986988A (en) * 2015-07-02 2015-10-21 青岛文创科技有限公司 Two-component permeation type liquid hardening agent and preparation method thereof
CN106699006A (en) * 2017-01-20 2017-05-24 湖北省路桥集团有限公司 Concrete sealing curing agent

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周斌: "《公路边坡生态恢复及防护技术的研究》", 28 February 2018, 东北师范大学出版社 *
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王迎军: "《新型材料科学与技术 无机材料卷》", 31 October 2016, 华南理工大学出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109133766A (en) * 2018-08-29 2019-01-04 佛山朝鸿新材料科技有限公司 A kind of preparation method of high-strength waterproof benefit clay

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Application publication date: 20180828