CN106279558A - Concrete additive and preparation method thereof - Google Patents
Concrete additive and preparation method thereof Download PDFInfo
- Publication number
- CN106279558A CN106279558A CN201610583687.5A CN201610583687A CN106279558A CN 106279558 A CN106279558 A CN 106279558A CN 201610583687 A CN201610583687 A CN 201610583687A CN 106279558 A CN106279558 A CN 106279558A
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- China
- Prior art keywords
- monomer
- chain
- water
- transferring agent
- solution
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Classifications
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- 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
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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
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
-
- 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
- C04B2103/302—Water reducers
Abstract
The present invention relates to a kind of for concrete additive and preparation method thereof；Purpose is to provide a kind of concrete additive with good water-reducing property and function of slump protection and preparation method thereof.A kind of concrete additive includes following components by weight percent: 32 40 parts of monomer A, 2.2 4 parts of monomer B, 0.1 0.5 parts of chain-transferring agents, 0.3 0.5 parts of hydrogen peroxide, 0.1 0.3 parts of VC, 45 65 parts of water；Described monomer A be molecular weight be the polyethers of 2,000 4000；Polyethers is and refers to the end thiazolinyl alkylene polyoxyethylene ether with terminal double bond；Described monomer B is acrylic acid；Described chain-transferring agent is mercaptopropionic acid.The concrete additive using inventive formulation to prepare adds slump retaining in concrete to and will not change over and be substantially reduced, and the carboxylic acid conversion ratio of additive improves fairly obvious, additive molecule the most gradually can discharge carboxylate radical thus improve the slump retaining of concrete.
Description
Technical field
The present invention relates to additive of a kind of concrete construction and preparation method thereof, be specifically related to a kind of polycarboxylic acids diminishing
Agent and preparation method thereof.
Background technology
Water reducer is a kind of under conditions of maintaining concrete slump constant, can reduce outside the concrete of mixing water amount
Add agent, mostly belong to anion surfactant.Polycarboxylate water-reducer (Polycarboxylate Superplasticizer)
It is a kind of high-performance water reducing agent, is a kind of cement dispersants during cement concrete uses.But polycarboxylate water-reducer is at coagulation
In soil application, increasing over time, the mobility of concrete can reduce, so that losing workability, therefore, needs in construction usage
Compound the slump retaining agent that can keep concrete flowability.
Summary of the invention
The invention aims to provide a kind of have good water-reducing property and the concrete additive of function of slump protection and
Its preparation method.
For achieving the above object, the technical solution used in the present invention is: a kind of concrete additive includes following weight group
Point: 32-40 part monomer A, 2.2-4 part monomer B, 0.1-0.5 part chain-transferring agent, 0.3-0.5 part hydrogen peroxide, 0.1-0.3 part VC,
45-65 part water；
Described monomer A be molecular weight be the polyethers of 2000-4000；Polyethers is and refers to the end thiazolinyl alkylene with terminal double bond
Polyoxyethylene ether；
Described monomer B is acrylic acid；
Described chain-transferring agent is mercaptopropionic acid.
VC i.e. vitamin C.
It is further preferred that described concrete additive includes following components by weight percent: 32-40 part monomer A, 2.2-4 part is single
Body B, 0.1-0.5 part chain-transferring agent, 0.3-0.5 part hydrogen peroxide, 0.1-0.3 part VC, 45-65 part water.
It is further preferred that described concrete additive includes following components by weight percent: 35 parts of monomer A, 3 parts of monomer B, 0.2
Part chain-transferring agent, 0.4 part of hydrogen peroxide, 0.1 part of VC, 61.3 parts of water.
Further, described polyethers is methyl thiazolinyl polyoxyethylene ether, isopentenol polyoxyethylene ether and methallyl alcohol
Mixture in polyoxyethylene ether, its mass ratio is 4:4:2.
The preparation method of above-mentioned concrete additive includes step:
A. by soluble in water for monomer B, stir monomer solution is stand-by；By soluble in water to chain-transferring agent and VC, stirring
Uniform chain-transferring agent solution for later use；
B. by monomer A and hydrogen peroxide solution heated and stirred 0.6-1.2h, being subsequently adding remaining water and be completely dissolved, temperature adds
After heat to 38-42 DEG C, then starting at the uniform velocity to drip monomer solution and chain-transferring agent solution, 3-5h drips off；
C. continuing insulation reaction 1.5-3h, reaction adds liquid caustic soda solution regulation system pH value between 6-8 after terminating, discharging
Obtain product.Use liquid caustic soda solution can be sodium hydrate aqueous solution can also be potassium hydroxide aqueous solution.
Further, in described step B, temperature is heated to 40 DEG C.
Further, monomer A and hydrogen peroxide solution heated and stirred 1h in described step B.
Further, in described step B, monomer solution and chain-transferring agent solution time for adding are 3.5h.
Further, in described step C, the insulation reaction time is 2h.
Further, described step A is prepared water, the water preparing chain-transferring agent use and described step that monomer solution uses
The mass ratio of the water added in rapid B is 2:1:7.
Use the concrete additive prepared of inventive formulation add to slump retaining in concrete will not change over and
Be substantially reduced, and additive carboxylic acid conversion ratio improve fairly obvious, additive molecule can the most gradually discharge carboxylate radical from
And improve the slump retaining of concrete.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention will be further described.The described embodiment only present invention is preferable to carry out
Example, is not limited to the present invention, and for a person skilled in the art, the present invention can have various change and change
Change.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included in the present invention
Protection domain within.
Embodiment one
30g acrylic acid is dissolved in 122.6g deionized water, stirs, obtain minor comonomer solution for later use；By 2g sulfydryl third
Acid and 1gVC are dissolved in 61.3g deionized water, stir, obtain chain-transferring agent solution for later use；By 140g mean molecule quantity it is
The methyl thiazolinyl polyoxyethylene ether of 3000,140g mean molecule quantity are isopentenol polyoxyethylene ether, the 70g mean molecule of 2400
Amount is methyl allyl alcohol polyoxyethylene ether and 4g hydrogen peroxide solution heated and stirred 1.2h of 2400, is subsequently adding 429.1g deionization
Water is completely dissolved after temperature reaches 40 DEG C, starts at the uniform velocity dropping minor comonomer solution and chain-transferring agent solution, and 3.5h drips off, and then continues
Continuous insulation reaction 2h, reaction adds liquid caustic soda solution regulation system pH value to 6.8 after terminating, discharging obtains product.
Embodiment two
40g acrylic acid is dissolved in 130g deionized water, stirs, obtain minor comonomer solution for later use；By 1g mercaptopropionic acid
It is dissolved in 65g deionized water with 3gVC, stirs, obtain chain-transferring agent solution for later use；It is 3000 by 100g mean molecule quantity
Methyl thiazolinyl polyoxyethylene ether, 100g mean molecule quantity be 2400 isopentenol polyoxyethylene ether, 120g mean molecule quantity be
The methyl allyl alcohol polyoxyethylene ether of 2400 and 4g hydrogen peroxide solution heated and stirred 1h, be subsequently adding 455g deionized water the most molten
After solution temperature reaches 40 DEG C, starting at the uniform velocity dropping minor comonomer solution and chain-transferring agent solution, 4h drips off, and then proceedes to insulation reaction
3h, reaction terminate after add liquid caustic soda solution regulation system pH value to 7.8, discharging obtains product.
Embodiment three
22g acrylic acid is dissolved in 120g deionized water, stirs, obtain minor comonomer solution for later use；By 5g mercaptopropionic acid
It is dissolved in 100g deionized water with 1gVC, stirs, obtain chain-transferring agent solution for later use；It is 3000 by 160g mean molecule quantity
Methyl thiazolinyl polyoxyethylene ether, 160g mean molecule quantity be 2400 isopentenol polyoxyethylene ether, 80g mean molecule quantity be
The methyl allyl alcohol polyoxyethylene ether of 2400 and 3g hydrogen peroxide solution heated and stirred 1h, be subsequently adding 380g deionized water the most molten
After solution temperature reaches 40 DEG C, starting at the uniform velocity dropping minor comonomer solution and chain-transferring agent solution, 4h drips off, and then proceedes to insulation reaction
3h, reaction terminate after add liquid caustic soda solution regulation system pH value to 6.2, discharging obtains product.
Product embodiment prepared is pressed with commercially available accelerator according to standard JG/T 223-2007 " polycarboxylic-acid height
Energy water reducer " indexs such as its slump are carried out contrast test, result is as shown in table 1:
Table 1 contrast test result
Claims (10)
1. a concrete additive, it is characterised in that: include following components by weight percent: 32-40 part monomer A, 2.2-4 part monomer B,
0.1-0.5 part chain-transferring agent, 0.3-0.5 part hydrogen peroxide, 0.1-0.3 part VC, 45-65 part water；
Described monomer A be molecular weight be the polyethers of 2000-4000；
Described monomer B is acrylic acid；
Described chain-transferring agent is mercaptopropionic acid.
Anti-bleeding type water reducer the most according to claim 1, it is characterised in that: include following components by weight percent: 32-40 part is single
Body A, 2.2-4 part monomer B, 0.1-0.5 part chain-transferring agent, 0.3-0.5 part hydrogen peroxide, 0.1-0.3 part VC, 45-65 part water.
Anti-bleeding type water reducer the most according to claim 1, it is characterised in that: include following components by weight percent: 35 parts of monomers
A, 3 parts of monomer B, 0.2 part of chain-transferring agent, 0.4 part of hydrogen peroxide, 0.1 part of VC, 61.3 parts of water.
Anti-bleeding type water reducer the most as claimed in any of claims 1 to 3, it is characterised in that: described polyethers is first
Mixture in base thiazolinyl polyoxyethylene ether, isopentenol polyoxyethylene ether and methyl allyl alcohol polyoxyethylene ether, its mass ratio
For 4:4:2.
The preparation method of concrete additive the most according to claim 4, it is characterised in that: include step:
A. by soluble in water for monomer B, stir monomer solution is stand-by；By soluble in water to chain-transferring agent and VC, stir
Obtain chain-transferring agent solution for later use；
B. by monomer A and hydrogen peroxide solution heated and stirred 0.6-1.2h, being subsequently adding remaining water and be completely dissolved, temperature is heated to
After 38-42 DEG C, then starting at the uniform velocity to drip monomer solution and chain-transferring agent solution, 3-5h drips off；
C. continuing insulation reaction 1.5-3h, reaction adds liquid caustic soda solution regulation system pH value between 6-8 after terminating, discharging and get final product
Product.
The preparation method of concrete additive the most according to claim 5, it is characterised in that: in described step B, temperature adds
Heat is to 40 DEG C.
The preparation method of concrete additive the most according to claim 5, it is characterised in that: in described step B monomer A and
Hydrogen peroxide solution heated and stirred 1h.
The preparation method of concrete additive the most according to claim 5, it is characterised in that: in described step B, monomer is molten
Liquid and chain-transferring agent solution time for adding are 3.5h.
The preparation method of concrete additive the most according to claim 5, it is characterised in that: in described step C, insulation is anti-
It is 2h between Ying Shi.
The preparation method of anti-bleeding type water reducer the most according to claim 5, it is characterised in that: prepared by described step A
The mass ratio of the water added in the water that monomer solution uses, the water preparing chain-transferring agent use and described step B is 2:1:7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610583687.5A CN106279558B (en) | 2016-07-22 | 2016-07-22 | concrete additive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610583687.5A CN106279558B (en) | 2016-07-22 | 2016-07-22 | concrete additive and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106279558A true CN106279558A (en) | 2017-01-04 |
| CN106279558B CN106279558B (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610583687.5A Active CN106279558B (en) | 2016-07-22 | 2016-07-22 | concrete additive and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108298858A (en) * | 2018-02-10 | 2018-07-20 | 四川双利新材料有限公司 | The anhydrous synthetic powder of 100% collapse protective poly-carboxylic acid water reducing agent of one kind and its preparation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603996A (en) * | 2012-02-28 | 2012-07-25 | 武汉理工大学 | Ether type polycarboxylic acid slump retaining agent and preparation method thereof |
| CN103183788A (en) * | 2011-12-27 | 2013-07-03 | 山西黄腾化工有限公司 | Preparation method for polycarboxylic acid type concrete slump-retaining agent |
| CN104193915A (en) * | 2014-08-21 | 2014-12-10 | 广东瑞安科技实业有限公司 | Slow-release type polycarboxylic acid slump retaining agent and preparation method thereof |
-
2016
- 2016-07-22 CN CN201610583687.5A patent/CN106279558B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103183788A (en) * | 2011-12-27 | 2013-07-03 | 山西黄腾化工有限公司 | Preparation method for polycarboxylic acid type concrete slump-retaining agent |
| CN102603996A (en) * | 2012-02-28 | 2012-07-25 | 武汉理工大学 | Ether type polycarboxylic acid slump retaining agent and preparation method thereof |
| CN104193915A (en) * | 2014-08-21 | 2014-12-10 | 广东瑞安科技实业有限公司 | Slow-release type polycarboxylic acid slump retaining agent and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108298858A (en) * | 2018-02-10 | 2018-07-20 | 四川双利新材料有限公司 | The anhydrous synthetic powder of 100% collapse protective poly-carboxylic acid water reducing agent of one kind and its preparation method |
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| Publication number | Publication date |
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| CN106279558B (en) | 2018-11-30 |
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Address after: 400 700 Sansheng Town Street, Beibei District, Chongqing Patentee after: CHONGQING SANSHENG INDUSTRIAL CO.,LTD. Address before: 400 000 Sansheng Town Street, Beibei District, Chongqing Patentee before: Chongqing Sansheng Building Materials Co., Ltd. |