CN104176969B - A kind of polycarboxylic acids water-retaining agent, preparation method and its usage - Google Patents
A kind of polycarboxylic acids water-retaining agent, preparation method and its usage Download PDFInfo
- Publication number
- CN104176969B CN104176969B CN201410405710.2A CN201410405710A CN104176969B CN 104176969 B CN104176969 B CN 104176969B CN 201410405710 A CN201410405710 A CN 201410405710A CN 104176969 B CN104176969 B CN 104176969B
- Authority
- CN
- China
- Prior art keywords
- water
- retaining agent
- concrete
- polycarboxylic acids
- preparation
- 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.)
- Expired - Fee Related
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of polycarboxylic acids water-retaining agent, preparation method and its usage, this water-retaining agent raw material includes polyethers, acrylic acid, vitamin C, mercaptopropionic acid, Ammonium persulfate., hydrogen peroxide, the participation of this process mainly water-retaining agent improves the distribution of pores of concrete, concrete density is increased, keep inside concrete moisture, promote the further hydration effect of Binder Materials, difference according to preparation effect, all formulations is mixed in order, and react under certain condition, and this purposes subtracting formula is the water-retaining agent just for local material characteristic, the local material suitability of product improvement of the present invention additive and range of application, excellent effect, cost advantage is obvious.
Description
Technical field
The present invention relates to a kind of technical field of concrete additives, be specifically related to a kind of polycarboxylic acids water-retaining agent and preparation side thereof
Method, the invention still further relates to the purposes of this water-retaining agent.
Background technology
The engineerings such as current bridge, road, subway are required for using concrete, for meeting the fast of the Other Engineerings such as building industry
Speed development, has higher requirement to the performance of concrete, and high performance concrete, green concrete are the masters of commerical ready-mixed concrete
Miscarriage product, additive is the third time leap of concrete technology, is the important technology approach improving concrete performance.In order to improve
The workability of concrete and reduction produce the environmental pollution of additive process, and the research and development of polycarboxylic acid salt's additive are by the weight of height
Depending on, polycarboxylic acids high efficiency additive is the copolymer of methacrylic acid and other monomers, and functional group is carboxyl (-COOH), poly-second
Epoxide (-OCH2CH2), there is ultra-dispersed property, concrete slump loss can be stoped and do not cause obvious slow setting, and there is height
Usefulness and the green feature produced, be widely used in the whole world, be further substituted with naphthalene system, aliphatic category additive.
It is known that concrete needs enough water to react in hardening process, the intensity of guarantee concrete,
General require to need maintenance more than 7 days of sprinkling water, but in many Practical Projects, often do not accomplish maintenance of sprinkling water, and concrete table
Face moisture evaporates quickly, must affect its intensity if do not retained the potential of moisture in concrete.The most also guarantor is played
The sealing compound of water effect, or plastic covering film, the most just complex procedures, and also effect is unsatisfactory.At present by research
Find, the incorporation of water-retaining agent, make the slump of concrete, bleeding, air content, apparent density compared with not mixing, have bigger change
Change, the particularly slump and bleeding, show that concrete cohesiveness increases, reduce the slump and the bleeding feelings of concrete
Condition so that pile up before concrete hardening and become tightr.Main reason is that the participation of water-retaining agent improves the hole of concrete
Distribution so that concrete density increases, has kept inside concrete moisture, promotes the further hydration effect of Binder Materials.But
Being that many water-retaining agent have effect when being applied to different local cement and differ greatly, it is former that prior art cannot meet some places
Material use requirement.
Summary of the invention
It is an object of the invention to provide a kind of can be for polycarboxylic acids water-retaining agent of local material characteristic and preparation method thereof.
It is a further object of the present invention to provide the purposes of this polycarboxylic acids water-retaining agent.
The solution of the present invention is based on the basic composition principle of polycarboxylic acid salt's water-retaining agent, special for local material
Property, improve the local material suitability and the range of application of additive, be suitable for the demand of this area concrete mixing plant, give
Key technology requirement when the match ratio consumption of various materials and synthesis.
For solving above-mentioned technical problem, the technical scheme is that a kind of applicable local raw-material polycarboxylic acids water conservation
Agent, the molar constituent composition of each raw material: polyether macromonomer 63.7mol, acrylic acid minor comonomer 148.4mol, hydrogen peroxide
25.1mol, mercaptopropionic acid 5mol, Ammonium persulfate. 1mol, Catergen mol.
The principle of this invention is: this process is mainly between high-polymer molecular by catalyst (initiator, chain-transferring agent
Deng) condensation of the series of intermolecular that occurs or the reaction of addition polymerization, generate end or the branch terminals molecule with hydrophilic interaction, right
Cement has the molecular weight polymers group of peptizaiton.
In water-retaining agent formula of the present invention, the function of each compositions is: from microcosmic, can increase in concrete
Intermolecular interaction between aggregate, accelerates the hydration reaction of cement.Intuitively analyze, there is the strongest water retention, permissible
Improve the workability of concrete, mobility；On the other hand, under aggregate standard conditions, the state of concrete can be made to be maintained at 1
~ 2 hours, keep concrete not grab at the end, do not return and concrete strength under slurry, equal conditions, can be improved.
Meanwhile, the present invention also provides for the production technology of a kind of above-mentioned applicable place raw-material polycarboxylic acids water-retaining agent, its work
Skill step is:
Step one: weigh polyether macromonomer 360kg, puts in agitator tank, adds water to stir, and the solution after dissolving is made
For bed material；
Step 2: weigh acrylic acid minor comonomer 25kg, mercaptopropionic acid 1.2kg, vitamin C 0.8kg and Ammonium persulfate. respectively
1.5kg is dissolved in water, and drips respectively 2 hours in agitator tank；
Step 3: weigh hydrogen peroxide 2kg, be directly added in agitator tank；
Step 4: high temperature 60 degree, in 6 hours response time, had both obtained water-retaining agent.
It addition, the present invention also provides for the purposes of above-mentioned applicable place raw-material polycarboxylic acids water-retaining agent: this water-retaining agent is fitted
The raw material answered is: (scenery with hills and waters cement is by Shandong Shanshui Cement Group Ltd. sunshine for the scenery with hills and waters cement of cement model P.O42.5
Branch company produces), sand clay content is the medium sand of 2.5-3.0%, and its modulus of fineness is in 2.1-3.0 region, and stone clay content is less than
0.5%。
Compared with prior art, the invention has the beneficial effects as follows:
(1) this water-retaining agent reaction principle is reasonable, and production technology is simple, for the scenery with hills and waters cement of cement model P.O42.5;Sand
Sub-clay content is the medium sand (modulus of fineness is in 2.1 ~ 3.0 regions) of 2.5 ~ 3.0%, and the place that stone clay content is not more than 0.5% is former
Adaptability for materials is good, volume is low, good water-retaining property, and the match ratio maximum flowing degree of net paste of cement retention time is 1-2 hour, can be used for
Configuration high intensity and high performance concrete.
(2) Slump Time losing of Large loss is little, and ready-mixed concrete 2h slump-loss is less than 15%, and this is for commodity coagulation
Long-distance transportation and the pumping construction of soil are extremely advantageous；Concrete shrinkage is little, can obviously reduce concrete shrinkage, significantly improves mixed
Solidifying soil volume stability and durability.
(3) workability of concrete is good, and the state of concrete can be made 1 ~ 2 hour to be maintained at, and keeps concrete not grab at the end, no
Return and concrete strength under slurry, equal conditions, can be improved.
Detailed description of the invention
Embodiment 1
Step one: weigh polyether macromonomer 360kg, puts in agitator tank, adds water to stir, and the solution after dissolving is made
For bed material；
Step 2: weigh acrylic acid minor comonomer 25kg, mercaptopropionic acid 1.2kg, vitamin C 0.8kg and Ammonium persulfate. respectively
1.5kg is dissolved in water, and drips respectively 2 hours in agitator tank；
Step 3: weigh hydrogen peroxide 2kg, be directly added in agitator tank；
Step 4: high temperature 60 degree, in 6 hours response time, had both obtained water-retaining agent.
Embodiment 2
Step one: weigh polyether macromonomer 450kg, puts in agitator tank, adds water to stir, and the solution after dissolving is made
For bed material；
Step 2: weigh acrylic acid minor comonomer 31.25kg, mercaptopropionic acid 1.5kg, vitamin C 1kg and persulfuric acid respectively
Ammonium 1.875kg is dissolved in water, and drips respectively 2 hours in agitator tank；
Step 3: weigh hydrogen peroxide 2.5kg, be directly added in agitator tank；
Step 4: high temperature 60 degree, in 6 hours response time, had both obtained water-retaining agent.
Embodiment 3
Step one: weigh polyether macromonomer 922.5kg, puts in agitator tank, adds water to stir, the solution after dissolving
As bed material；
Step 2: weigh acrylic acid minor comonomer 64kg, mercaptopropionic acid 3.075kg, vitamin C 2.05kg and over cure respectively
Acid ammonium 3.84kg is dissolved in water, and drips respectively 2 hours in agitator tank；
Step 3: weigh hydrogen peroxide 5.125kg, be directly added in agitator tank；
Step 4: high temperature 60 degree, in 6 hours response time, had both obtained water-retaining agent.
Water-retaining agent formula of the present invention and other water-retaining agent are contrast experiment
Experiment material therefor and proportioning:
With this water-retaining agent formula as experimental group, with the Chinese invention patent application " of Publication No. CN201110197848
Plant high-efficiency cement water retaining agent " it is matched group, its production method is as follows: water soluble ethoxyl cellulose ether 60-80, water solublity breast
Rubber powder 10-20, water-absorbing resin 10-20.During use, after adding the water dilution water-retaining agent of 400-500 times, it is directly added in cement i.e.
Can.
Concrete slump and divergence inspection
Test of concrete strength
Note testing strength control 8.0(KN/S per second with pressure testing machine)
Experimental result also shows that the workability of this water-retaining agent formula is good, after ten minutes slightly bleeding but the most counter starch, but
Matched group is when being applied to local cement, and bleeding and anti-slurry phenomenon are serious, cut slump divergence and are significantly lower than this water-retaining agent, anti-
Compressive Strength is increasing along with the increase gap at maintenance age.
This water-retaining agent reaction principle of Comprehensive Experiment result is reasonable, and production technology is simple, for the mountain of cement model P.O42.5
Water cement;Sand clay content is the medium sand of 2.5-3.0%, and its modulus of fineness is in 2.1-3.0 region, and stone clay content is less than 0.5%
Local raw material adaptability good, volume is low, water retention is high, this match ratio maximum flowing degree of net paste of cement retention time is 1-2
Hour.
Claims (3)
1. a polycarboxylic acids water-retaining agent, it is characterised in that: the molar constituent proportion of each raw material is as follows:
Polyether macromonomer 63.7mol, acrylic acid minor comonomer 148.4mol, hydrogen peroxide 25.1mol, mercaptopropionic acid 5mol, over cure
Acid ammonium 1mol, Catergen mol.
The preparation method of a kind of polycarboxylic acids water-retaining agent the most according to claim 1, it is characterised in that each raw material components consumption
And preparation method is as follows:
Step one: by the polyether macromonomer of 63.7mol, puts in agitator tank, adds water to stir, the solution conduct after dissolving
Bed material；
Step 2: respectively by the acrylic acid minor comonomer of 148.4mol, the mercaptopropionic acid of 5mol, the vitamin C of 2mol is with 1mol's
Ammonium persulfate. is dissolved in water, and drips respectively 2 hours in agitator tank；
Step 3: by the hydrogen peroxide of 25.1mol, be directly added in agitator tank；
Step 4: high temperature 60 degree, in 6 hours response time, had both obtained water-retaining agent.
The purposes of a kind of polycarboxylic acids water-retaining agent the most according to claim 1, is to be characterised by, it is former that this water-retaining agent is adapted to
Material is: the scenery with hills and waters cement of cement model P.O42.5;Sand clay content is the medium sand of 2.5 ~ 3.0%, and wherein modulus of fineness is 2.1
~ 3.0 regions, stone clay content not should be greater than 0.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410405710.2A CN104176969B (en) | 2014-08-18 | 2014-08-18 | A kind of polycarboxylic acids water-retaining agent, preparation method and its usage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410405710.2A CN104176969B (en) | 2014-08-18 | 2014-08-18 | A kind of polycarboxylic acids water-retaining agent, preparation method and its usage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104176969A CN104176969A (en) | 2014-12-03 |
| CN104176969B true CN104176969B (en) | 2016-08-31 |
Family
ID=51958355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410405710.2A Expired - Fee Related CN104176969B (en) | 2014-08-18 | 2014-08-18 | A kind of polycarboxylic acids water-retaining agent, preparation method and its usage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104176969B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228962B (en) * | 2019-05-29 | 2021-10-29 | 科之杰新材料集团有限公司 | Water-retention type wet-mixed mortar plasticizer and preparation method thereof |
| CN112892058B (en) * | 2021-01-22 | 2022-04-26 | 山东汶河新材料有限公司 | Polycarboxylate water reducing agent preparation system of processing |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103554387A (en) * | 2013-11-04 | 2014-02-05 | 上海三瑞高分子材料有限公司 | Thickener copolymer as well as preparation method and application thereof |
-
2014
- 2014-08-18 CN CN201410405710.2A patent/CN104176969B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103554387A (en) * | 2013-11-04 | 2014-02-05 | 上海三瑞高分子材料有限公司 | Thickener copolymer as well as preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104176969A (en) | 2014-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104973817B (en) | A kind of concrete viscosity regulator being applicable to use with polycarboxylate water-reducer compatibility and preparation method thereof | |
| CN103466993B (en) | Additive for pervious concrete and application thereof | |
| CN103467670B (en) | Preparation method of anti-mud polycarboxylic water reducer | |
| CN103409130A (en) | Multi-component acid pressure temporary plugging additive and preparation method thereof | |
| CN108467215A (en) | A kind of nanometer C-S-H crystal seeds early strength agent and preparation method for building concrete | |
| CN104310839A (en) | Concrete enhancer and preparation method thereof | |
| CN107383274B (en) | Long-acting concrete water-retaining agent and preparation method thereof | |
| CN109879629A (en) | A kind of high-thin arch dam synergist and its preparation method and application | |
| CN109776742A (en) | A kind of anti-chamotte mould polycarboxylate water-reducer of phosphate ester-containing and preparation method thereof | |
| CN102249591A (en) | Composite polycarboxylic acid water reducing agent | |
| CN107963827A (en) | Organic-inorganic composite alkali-free quick-coagulant and preparation method thereof | |
| CN106336485B (en) | A kind of low damage poly carboxylic acid series water reducer and preparation method thereof that collapses of anti-chamotte mould | |
| CN104478284A (en) | Polycarboxylate superplasticizer and preparation method thereof | |
| CN108585587A (en) | A kind of room temperature synthesis early-strength alkali-free liquid setting accelerator and preparation method thereof | |
| CN110407508A (en) | A kind of wet mixing mortar additive | |
| CN106316248B (en) | A kind of low self-constriction high-strength concrete prepared using concrete mixing plant waste pulp | |
| CN111362616A (en) | Concrete water reducing agent and preparation method thereof | |
| CN103723946B (en) | A kind of energy saving and environment friendly fresh concrete activator | |
| CN104860572A (en) | Special polycarboxylate-type water reducing agent for wet-spraying concrete capable of retaining slump for 6 hours at scorching heat condition | |
| CN105601837B (en) | A kind of polycarboxylate water-reducer and preparation method thereof | |
| CN104176969B (en) | A kind of polycarboxylic acids water-retaining agent, preparation method and its usage | |
| CN115536779A (en) | Carboxyl-hydroxyl condensation crosslinking type concrete water-retaining agent and preparation method thereof | |
| CN104030599A (en) | Antifreezing polycarboxylic acid composite pumping water reducing agent and application thereof | |
| CN108975755A (en) | Regeneration concrete special additive | |
| CN108046653A (en) | A kind of shield list liquid synchronous grouting outer-penetrating agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Xiquan Inventor after: Yang Zhigang Inventor after: Shen Shurong Inventor after: Wei Yi Inventor after: Zhao Chunhe Inventor before: Wei Yi Inventor before: Zhao Chunhe Inventor before: Xu Xiquan Inventor before: Yang Zhigang Inventor before: Zhang Huajie |
|
| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160802 Address after: 276800 No. 16 North Yantai Road, Donggang District, Shandong, Rizhao City Applicant after: RIZHAO POLYTECHNIC Applicant after: RIZHAO HAIJING BUILDING MATERIALS CO., LTD. Address before: 276800 Shandong Province, Rizhao City Donggang District Heshan Town of Rizhao harbour Zhen Jia Zhuang Building Materials Co. Ltd. Applicant before: RIZHAO HAIJING BUILDING MATERIALS CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20170818 |