CN110105501A - A kind of cement water reducing agent of polycarboxylic-acid - Google Patents
A kind of cement water reducing agent of polycarboxylic-acid Download PDFInfo
- Publication number
- CN110105501A CN110105501A CN201910211763.3A CN201910211763A CN110105501A CN 110105501 A CN110105501 A CN 110105501A CN 201910211763 A CN201910211763 A CN 201910211763A CN 110105501 A CN110105501 A CN 110105501A
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- Prior art keywords
- acid
- polycarboxylic
- initiator
- reducing agent
- chain
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Classifications
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2688—Copolymers containing at least three different monomers
- C04B24/2694—Copolymers containing at least three different monomers containing polyether side chains
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of cement water reducing agents of polycarboxylic-acid, by methyl allyl polyoxyethylene ether TPEG, allyl polyethenoxy ether HPEG, hydroxy-ethyl acrylate HEA, acrylic acid, acid anhydrides, vitamin C, HP hydrogen peroxide, chain-transferring agent, initiator, piece alkali, deionized water composition, its component is by weight percentage: methyl allyl polyoxyethylene ether TPEG10-20%, allyl polyethenoxy ether HPEG10-20%, hydroxy-ethyl acrylate HEA15-25%, acrylic acid 6-8%, acid anhydrides 8-10%, vitamin C 10-16%, HP hydrogen peroxide 4-8%, chain-transferring agent 0.5-0.9%, initiator 1-2%, piece alkali 6-8%, remaining is deionized water；The beneficial effects of the present invention are: volume is low, water-reducing rate is high, and due to significantly diminishing, the mixing water of every side is lower, therefore the concrete of higher-strength grade can be allotted with less glue material；Function of slump protection is good, and gradual loss is small；The early hydration heat of concrete can be reduced.
Description
Technical field
The invention belongs to cement water reducing agent technical fields, and in particular to a kind of cement water reducing agent of polycarboxylic-acid.
Background technique
Cement water reducing agent mainly has a second generation naphthalene system and two kinds of third generation polycarboxylic-acid at present, naphthalene water reducer use compared with
For stabilization, but there are problems in use in poly carboxylic acid series water reducer.Some projects have had already appeared in various degree
Quality defect of concrete, such as cracking, infiltration, phenomena such as slump-loss is too fast cause certain economic loss.
There is the deficiencies of following aspect when in use for the cement water reducing agent of existing polycarboxylic-acid:
1. water-reducing rate is not high；
2. there is deficiencies in the landslide face of guarantor；
3. the early hydration heat of concrete is higher；
In order to improve water-reducing rate；Improve function of slump protection；The workability for enhancing concrete, reduces the early hydration of concrete
Heat, the present invention provides a kind of cement water reducing agent of polycarboxylic-acid thus.
Summary of the invention
The purpose of the present invention is to provide a kind of cement water reducing agents of polycarboxylic-acid, to solve to mention in above-mentioned background technique
Out the problem of.
To achieve the above object, the invention provides the following technical scheme: a kind of cement water reducing agent of polycarboxylic-acid, by first
Base allyl polyethenoxy ether TPEG, allyl polyethenoxy ether HPEG, hydroxy-ethyl acrylate HEA, acrylic acid, acid anhydrides, dimension life
Plain C, HP hydrogen peroxide, chain-transferring agent, initiator, piece alkali, deionized water composition, component by weight percentage: methallyl
Base polyoxyethylene ether TPEG10-20%, allyl polyethenoxy ether HPEG10-20%, hydroxy-ethyl acrylate HEA15-25%, third
Olefin(e) acid 6-8%, acid anhydrides 8-10%, vitamin C 10-16%, HP hydrogen peroxide 4-8%, chain-transferring agent 0.5-0.9%, initiator 1-
2%, piece alkali 6-8%, remaining is deionized water.
It is matched in parts by weight as a preferred technical solution of the invention, including as follows: methacrylic polyoxy
Vinethene TPEG15%, allyl polyethenoxy ether HPEG15%, hydroxy-ethyl acrylate HEA20%, acrylic acid 7%, acid anhydrides
9%, vitamin C 13%, HP hydrogen peroxide 6%, chain-transferring agent 0.7%, initiator 1.5%, piece alkali 7%, remaining is ionized water.
As a preferred technical solution of the invention, the initiator is APS ammonium persulfate, persulfate, over cure
One of sour potassium or at least two.
As a preferred technical solution of the invention, the acid anhydrides is along Ding Xier acid anhydrides.
As a preferred technical solution of the invention, the chain-transferring agent is thioacetic acid or sodium hypophosphite.
Compared with prior art, the beneficial effects of the present invention are:
(1) volume is low, and water-reducing rate is high, and due to significantly diminishing, the mixing water of every side is lower, therefore can use less glue
Material allots the concrete of higher-strength grade；
(2) function of slump protection is good, and gradual loss is small；
(3) the early hydration heat of concrete can be reduced.
Specific embodiment
A kind of cement water reducing agent of polycarboxylic-acid, by methyl allyl polyoxyethylene ether TPEG, allyl polyethenoxy
Ether HPEG, hydroxy-ethyl acrylate HEA, acrylic acid, acid anhydrides, vitamin C, HP hydrogen peroxide, chain-transferring agent, initiator, piece alkali, go from
Sub- water composition, component by weight percentage: methyl allyl polyoxyethylene ether TPEG10-20%, allyl polyethenoxy
Ether HPEG10-20%, hydroxy-ethyl acrylate HEA15-25%, acrylic acid 6-8%, acid anhydrides 8-10%, vitamin C 10-16%, HP
Hydrogen peroxide 4-8%, chain-transferring agent 0.5-0.9%, initiator 1-2%, piece alkali 6-8%, remaining is deionized water；Wherein, cause
Agent is one of APS ammonium persulfate, persulfate, potassium peroxydisulfate or at least two；Acid anhydrides is along Ding Xier acid anhydrides；Chain tra nsfer
Agent is thioacetic acid or sodium hypophosphite.
Methyl allyl polyoxyethylene ether TPEG is dissolved in water and a variety of organic solvents, is high-efficiency water-reducing agent of poly-carboxylic acid of new generation
Important source material；There is high-efficient granule dispersion performance and holding capacity, tool using the high-efficiency water-reducing agent of poly-carboxylic acid that the product synthesizes
Have that water-reducing rate is high, cement usage amount is low, reinforcing effect is good, endurance quality is good, Corrosion Reinforcement, environmentally friendly etc. be not many excellent
Point, can site of deployment stirring and the high-performance of long-distance sand transport, high intensity (C60 or more) commerical ready-mixed concrete in.
Allyl polyethenoxy ether HPEG can be reacted with acrylic acid and along unsaturated acids such as Ding Xier acid anhydrides, production
Poly carboxylic acid series water reducer has the characteristics of cost performance is high, water-reducing rate is big, protects good plasticity and excellent in te pins of durability.
Hydroxy-ethyl acrylate HEA colourless transparent liquid, easily polymerize, can with water, alcohol, ether, etc. organic solvents mix, mainly
For manufacturing thermosetting acrylic coating, light-cured acrylic coating, photosensitive coating, adhesive, spinning finishing agent, paper conversion,
The characteristics of water quality stabilizer and high molecular material etc. have usage amount few, are but remarkably improved product properties.
The a large amount of highly polar functional group's carboxyl and hydroxyl contained in vitamin C, these groups pass through absorption, dispersion, profit
Wet equal surface-active actions provide dispersion and mobile performance to cement granules, and pass through frictional resistance, drop between reduction cement granules
Low cement granules and the free energy of water termination increase the workability of fresh concrete, while polycarboxylic acid substance is adsorbed on cement
Particle surface, carboxylic acid ion make negative electrical charge on cement granules band, to make to generate electrostatic repulsion simultaneously between cement granules
Disperse cement granules, leads to the cohesion tendency for inhibiting cement slurry, increase the contact area of cement granules and water, fill cement
Divide aquation, during spreading cement granules, releases the free water that condensate is surrounded, improve workability, reduce and mix
Water.
HP hydrogen peroxide is strong oxidizer.
Chain-transferring agent is thioacetic acid or sodium hypophosphite；Thioacetic acid organic compounds containing sulfur, colourless transparent liquid have
Intense irritation smell, -16.5 DEG C of fusing point, 220 DEG C of boiling point, density 1.33g/mL, flash-point > 110 DEG C, refractive index 1.5030, with
Water is miscible, is miscible in ethyl alcohol, ether, is dissolved in usual vehicle；Sodium hypophosphite is soluble easily in water, ethyl alcohol, glycerol；Be slightly soluble in ammonia,
Ammonium hydroxide；Insoluble in ether, aqueous solution is in neutrality, and solubility is 667g/100g water in the water at 100 DEG C, is easily deliquesced, in drying
It is relatively stable when being saved under state, it is then decomposed rapidly when being heated beyond 200 DEG C.
Initiator is one of APS ammonium persulfate, persulfate, potassium peroxydisulfate or at least two.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of cement water reducing agent of polycarboxylic-acid, which is characterized in that by methyl allyl polyoxyethylene ether TPEG, allyl
Polyoxyethylene ether HPEG, hydroxy-ethyl acrylate HEA, acrylic acid, acid anhydrides, vitamin C, HP hydrogen peroxide, chain-transferring agent, initiator,
Piece alkali, deionized water composition, component by weight percentage: methyl allyl polyoxyethylene ether TPEG10-20%, allyl
Polyoxyethylene ether HPEG10-20%, hydroxy-ethyl acrylate HEA15-25%, acrylic acid 6-8%, acid anhydrides 8-10%, vitamin
C10-16%, HP hydrogen peroxide 4-8%, chain-transferring agent 0.5-0.9%, initiator 1-2%, piece alkali 6-8%, remaining is deionization
Water.
2. a kind of cement water reducing agent of polycarboxylic-acid according to claim 1, which is characterized in that including as follows by weight
Number proportion: methyl allyl polyoxyethylene ether TPEG15%, allyl polyethenoxy ether HPEG15%, hydroxy-ethyl acrylate
HEA20%, acrylic acid 7%, acid anhydrides 9%, vitamin C 13%, HP hydrogen peroxide 6%, chain-transferring agent 0.7%, initiator 1.5%,
Piece alkali 7%, remaining is ionized water.
3. a kind of cement water reducing agent of polycarboxylic-acid according to claim 1 or 2, it is characterised in that: the initiator
For one of APS ammonium persulfate, persulfate, potassium peroxydisulfate or at least two.
4. a kind of cement water reducing agent of polycarboxylic-acid according to claim 1 or 2, it is characterised in that: the acid anhydrides is
Along Ding Xier acid anhydrides.
5. a kind of cement water reducing agent of polycarboxylic-acid according to claim 1 or 2, it is characterised in that: the chain tra nsfer
Agent is thioacetic acid or sodium hypophosphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910211763.3A CN110105501A (en) | 2019-03-20 | 2019-03-20 | A kind of cement water reducing agent of polycarboxylic-acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910211763.3A CN110105501A (en) | 2019-03-20 | 2019-03-20 | A kind of cement water reducing agent of polycarboxylic-acid |
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| Publication Number | Publication Date |
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| CN110105501A true CN110105501A (en) | 2019-08-09 |
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| CN201910211763.3A Pending CN110105501A (en) | 2019-03-20 | 2019-03-20 | A kind of cement water reducing agent of polycarboxylic-acid |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538134A (en) * | 2009-04-14 | 2009-09-23 | 大连市建筑科学研究设计院股份有限公司 | Polyether class polycarboxylic acid high-efficiency water reducing agent and preparation method thereof |
| CN103183792A (en) * | 2011-12-27 | 2013-07-03 | 山西黄腾化工有限公司 | Preparation method of polycarboxylic water reducer |
| CN103408706A (en) * | 2013-08-19 | 2013-11-27 | 科之杰新材料集团有限公司 | High-performance polycarboxylic acid water reducing agent and preparation method thereof |
| CN104926183A (en) * | 2015-05-27 | 2015-09-23 | 中交四航工程研究院有限公司 | High-adaptability and high-performance polycarboxylic water-reducing agent and preparation method for same |
-
2019
- 2019-03-20 CN CN201910211763.3A patent/CN110105501A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538134A (en) * | 2009-04-14 | 2009-09-23 | 大连市建筑科学研究设计院股份有限公司 | Polyether class polycarboxylic acid high-efficiency water reducing agent and preparation method thereof |
| CN103183792A (en) * | 2011-12-27 | 2013-07-03 | 山西黄腾化工有限公司 | Preparation method of polycarboxylic water reducer |
| CN103408706A (en) * | 2013-08-19 | 2013-11-27 | 科之杰新材料集团有限公司 | High-performance polycarboxylic acid water reducing agent and preparation method thereof |
| CN104926183A (en) * | 2015-05-27 | 2015-09-23 | 中交四航工程研究院有限公司 | High-adaptability and high-performance polycarboxylic water-reducing agent and preparation method for same |
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Application publication date: 20190809 |
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