CN107188451B - A kind of long-acting retarder and preparation method thereof - Google Patents
A kind of long-acting retarder and preparation method thereof Download PDFInfo
- Publication number
- CN107188451B CN107188451B CN201710578594.8A CN201710578594A CN107188451B CN 107188451 B CN107188451 B CN 107188451B CN 201710578594 A CN201710578594 A CN 201710578594A CN 107188451 B CN107188451 B CN 107188451B
- Authority
- CN
- China
- Prior art keywords
- retarder
- long
- acting
- mixed liquor
- mixed
- 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.)
- Active
Links
Classifications
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
Abstract
A kind of long-acting retarder and preparation method thereof, is related to building material technical field.Hydroxycarboxylic acid retarder and polyalcohols retarder in the retarder carry out esterification, and the slow setting component of products therefrom discharges the middle and later periods postponed to concrete setting process.In addition, on this basis, the present invention has also compounded the retarder of a variety of different mechanism, the long-acting retarder is made equally to have good deferred action in the early period of concrete setting process, to reach the long-acting retarding effect for covering the preceding middle and later periods.Hydroxycarboxylic acid retarder and part polyalcohols retarder are mixed to get the first mixed liquor by the preparation method；Add the second mixed liquor containing esterification catalyst；And after allowing the first mixed liquor and the second mixed liquor to be sufficiently mixed and complete esterification, then compounded with other retarder.The preparation method is easy to operate, low for equipment requirements, can simply and efficiently obtain esterification products, is suitble to large-scale industrial production.
Description
Technical field
The present invention relates to building material technical fields, in particular to a kind of long-acting retarder and preparation method thereof.
Background technique
Retarder is a kind of a kind of additive that can delay to extend concrete coagulating time, and its main function mode is
The hydration rate for delaying cement and admixture allows concrete to possess certain construction plasticity in the longer time.City at present
Concrete is more with retarder kind on field, and different retarder its using effect using volume and the mechanism of action is also endless
Identical, main concrete retarder has: inorganic salts, hydroxycarboxylic acid salt, polyhydroxy carbohydrate, sulfomethylated lignin
Barbiturates etc..
It is understood that cement minerals group condenses in pairs and the influence order of hydration heat is tricalcium aluminate > tetra calcium aluminoferrite
> tricalcium silicate > dicalcium silicate.Therefore, under same volume, the retarder cement retardative effect high to tricalcium aluminate content compared with
Difference.And same concrete is had the disadvantage in that in use with retarder
First is that the presetting period from nothing to concrete when increasing to a certain amount of with concrete retarder is quick
Extend, continuing growing the concrete retarder concrete initial set time shows amount of increase and slow down, and is further continued for increasing concrete slow setting
The agent concrete initial set time shows gentle situation so that almost no longer extending the concrete initial set time, or even continues growing also
Have blood coagulation enhancing effect.
Second is that the presetting period of concrete can greatly mention in the case where environment temperature is higher or cement temperatures are higher
It is preceding to be difficult to the even solidifying tank in face so that smear concrete occur sometimes, cause other biggish concrete quality accidents, and
In the case of a high temperature, conventional concrete is undesirable with retarder function and effect, and temperature is higher, action concrete slow setting effect
Fruit is poorer.
Summary of the invention
The first object of the present invention is to provide a kind of long-acting retarder, with the spy that the retarding effect duration is long
Point, and still be able to possess preferable retarding effect at high temperature.
The second object of the present invention is to provide a kind of preparation method of long-acting retarder, and this method is convenient and simple for operation
Efficiently, low for equipment requirements, it is suitble to large-scale industrial production.Long-acting retarder obtained under the conditions of high temperature, long-time according to
So there is preferable retarding effect.
The present invention is implemented as follows:
A kind of long-acting retarder, according to parts by weight, raw material include: 25~55 parts of hydroxycarboxylic acid retarder, polynary
17~56 parts of alcohols retarder, 5~30 parts of phosphoric acid class retarder, 1~4 part of esterification catalyst, 0.001~0.03 part of polymerization inhibitor with
And 0.1~2 part of cellulose family retarder.
A kind of preparation method of long-acting retarder, comprising:
Hydroxycarboxylic acid retarder and part polyalcohols retarder are mixed to get the first mixed liquor；
Esterification catalyst, polymerization inhibitor and remaining polyalcohols retarder are mixed to get the second mixed liquor；
First mixed liquor and the second mixed liquor are mixed to get third mixed liquor；
Phosphoric acid class retarder, cellulose family retarder are mixed with third mixed liquor.
The beneficial effect of the embodiment of the present invention is:
The present invention provides a kind of long-acting retarder, and by hydroxycarboxylic acid retarder, polyalcohols retarder, phosphoric acid class is slow
Solidifying agent, esterification catalyst, polymerization inhibitor and cellulose family retarder are composed by a certain percentage.Hydroxycarboxylic acid retarder institute
Hydroxyl possessed by the carboxyl and polyalcohols retarder having carries out esterification in the presence of esterification catalyst, and gained produces
Its slow setting component of object discharges the middle and later periods postponed to concrete setting process.In addition, the present invention has compounded a variety of different mechanism
Retarder, so that the long-acting retarder is equally had good deferred action in the early period of concrete setting process, covered with reaching
The long-acting retarding effect of middle and later periods before covering.Meanwhile the long-acting retarder is affected by temperature small, can still be maintained at high temperature excellent
Different retarding effect.
It is the present invention also provides a kind of preparation method of long-acting retarder, hydroxycarboxylic acid retarder and part is polynary
Alcohols retarder is mixed to get the first mixed liquor；Add the second mixed liquor containing esterification catalyst；And allow the first mixed liquor
It is sufficiently mixed with the second mixed liquor after completing esterification, then compounded with other retarder.The preparation method is easy to operate,
It is low for equipment requirements, esterification products can be simply and efficiently obtained, large-scale industrial production is suitble to.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
A kind of long-acting retarder of the embodiment of the present invention and preparation method thereof is specifically described below.
The embodiment of the present invention provides a kind of long-acting retarder, and according to parts by weight, raw material includes: hydroxycarboxylic acid slow setting
25~55 parts of agent, 17~56 parts of polyalcohols retarder, 5~30 parts of phosphoric acid class retarder, 1~4 part of esterification catalyst, polymerization inhibitor
0.001~0.03 part and 0.1~2 part of cellulose family retarder.
Preferably, raw material includes: 30~55 parts of hydroxycarboxylic acid retarder, and 17~46 parts of polyalcohols retarder, phosphorus
10~30 parts of acids retarder, 2~4 parts of esterification catalyst, 0.01~0.03 part of polymerization inhibitor and cellulose family retarder 1~2
Part.It finds that the long-acting retarder retarding effect synthesized under this ratio is more preferable by the creative work of inventor, can have longer
Retarding time.
Hydroxycarboxylic acid retarder includes at least one of hydroxycarboxylic acid and hydroxycarboxylate；Hydroxycarboxylic acid includes lemon
At least one of acid, tartaric acid and lactic acid.Wherein especially using citric acid as raw material when obtained long-acting retarder effect it is best.
A certain number of carboxyls (- COOH), carboxyl have very strong polarity and suction-operated, and the nucleus for being attracted to hyrate is (brilliant
Embryo) on, entringite continued growth is hindered, mainly calcium sulfate hyrate crystallization conversion process is delayed and postponed.Secondly, hydroxyl
Base, carboxyl easily form cement particle surface along with the hydrogen bond association between hydrone by hydrogen bond association with hydrone
One layer of stable solvation moisture film, prevents the direct contact of cement granules key, hinders the progress of aquation.
Polyalcohols retarder includes at least one of polyalcohol and polyol derivative；Hydroxyl (- OH) is in cement water
Change Ca in the alkaline medium of product and free2+Unstable complex compound is generated, controls the Ca in liquid phase at aquation initial stage2+
Concentration, generate deferred action.With the progress of hydration process, this unstable complex compound will be decomposed voluntarily, and aquation will be after
It is continuous to be normally carried out, have no effect on cement further hydration.And hydroxyl (- OH) and carboxyl (- COOH) generation esterification life in alcohol
At ester also there is retarding effect.
Polyalcohol includes at least one of ethylene glycol, glycerine and sorbierite；Preferably, polyol derivative includes one
Diglycol ethylene, contracting at least one of two glycerine and polyethylene glycol.It is found by the creative work of inventor, it is above-mentioned
Several polyalcohols and polyol derivative have excellent retarding effect, and the efficiency of ester bond is formed with hydroxycarboxylic acid retarder
It is higher.Wherein, the effect of glycerine is preferable.
Long-acting retarder provided by the present invention is with the ester between hydroxycarboxylic acid retarder and polyalcohols retarder
Change reaction as the basis for extending retarding effect.By forming stable ester bond, hydroxycarboxylic acid retarder and more can be made
The component that retarding effect can be generated in first alcohols retarder is delayed to the middle and later periods release of concrete setting process, to make to delay
Solidifying effect duration is longer.Wherein, esterification catalyst is acid catalyst, including in p-methyl benzenesulfonic acid, the concentrated sulfuric acid at least
It is a kind of.It is found by inventor's creative work, the above esterification catalyst can obtain higher esterifying efficiency, thus effectively
Extend the retarding effect of long-acting retarder.
Using citric acid and glycerine as the main starting material assay retardation mechanism of reaction, wherein glycerine can be with slow setting to entirely
Portion stops aquation.Citric acid has very strong polarity due to containing a certain number of carboxyls (- COOH), carboxyl on its molecular structure
And suction-operated, it is attracted on the nucleus (embryos) of hyrate, hinders entringite continued growth, mainly to calcium sulfate water
Compound crystallization conversion process delays and postpones.The two has very strong retarding effect, mainly using its carboxylate in concrete
Middle and later periods still discharges the characteristics of slow setting component, possible reaction equation are as follows:
It is worth noting that, being formed with an ester bond, two esters in esterification process, between citric acid and glycerine
The multi-products of key or three ester bonds, but found by inventor's creative work, these different degrees of esterification products have
There is certain extended release, achievees the purpose that maintain retarding effect.
Further, a plurality of types of retarder have been compounded in the embodiment of the present invention, also to make the long-acting retarder in coagulation
The early period of native process of setting equally maintains preferable retarding effect.
Phosphoric acid class retarder includes at least one of phosphate and phosphate；Phosphate is as auxiliary addition agent and hydroxide
Calcium reaction forms insoluble calcium phosphate in cement particle surface, can achieve retarding effect.Phosphate include two Quadrafos,
At least one of tripolyphosphate and pyrophosphate, for the metal ion at salt can be sodium ion, potassium ion, ammonium root from
Son etc.；Preferably, phosphate includes at least one of phosphate monoester and di-phosphate ester, for example, methyl orthophosphoric acid, p diethylaminobenzoic acid
Ester, dibutylphosphoric acid ester etc..It is found by inventor's creative work, above-mentioned several substances have excellent retarding effect.
The retardation mechanism of auxiliary addition agent is explained by taking sodium tripolyphosphate as an example, sodium tripolyphosphate is strong base-weak acid salt, can be adjusted
Whole pH, and with the Ca that is dissolved in concrete and in cement2+、Mg2+、Fe3+Equal metal ions have complexing, phosphate and hydrogen
Calcium oxide reaction forms insoluble calcium phosphate in cement particle surface, and response feature is:
Na5P3O10+2H2O→2Na2HPO4+NaH2PO4；
Na5P3O10+Ca2+→Na3(CaP3O10)+2Na+；
-COO-+Na+→-COONa；
OH-+H+→H2O；
2PO4 3-+3Ca2+→Ca3(PO4)2↓。
Cellulose family retarder includes at least one of low-viscosity cellulose ether, methylcellulose, ethyl cellulose, fibre
Tieing up plain class retarder has the effect of thickening, water conservation, while having certain retarding effect, can guarantee that long-acting retarder is good
Performance.It is found by inventor's creative labor, it is obtained long-acting when above-mentioned several cellulose family retarder are as raw material
Retarder has preferable retarding effect.
Polymerization inhibitor includes at least one of p-hydroxyanisole, hydroquinone, p methoxy phenol.Polymerization inhibitor can hinder
The only aggregation between particle is conducive to the retarding effect for improving long-acting retarder.
The embodiment of the invention also provides a kind of preparation methods of long-acting retarder, comprising:
Hydroxycarboxylic acid retarder and part polyalcohols retarder are mixed to get the first mixed liquor；By catalyzing esterification
Agent, polymerization inhibitor and remaining polyalcohols retarder are mixed to get the second mixed liquor.
Hydroxycarboxylic acid retarder is mixed in advance with part polyalcohols retarder, after can starting to avoid esterification
Since feed distribution is uneven, local reaction excessive concentration is caused, so that esterification efficiency reduces, by-product increases.Meanwhile
The embodiment of the present invention, esterification catalyst, polymerization inhibitor and remaining polyalcohols retarder are mixed, and polyalcohols retarder can be with
Play the role of dispersing agent, esterification catalyst and polymerization inhibitor is allowed uniformly to scatter, makes esterification more uniform height when carrying out
Effect.
Further, when preparing the first mixed liquor, the number mixed point be it is multiple, hydroxycarboxylic acid retarder correspondence is mixed
It closes number and is divided into more parts, mixing includes: and any a hydroxycarboxylic acid is added into the polyalcohols retarder of heating to delay every time
Solidifying agent.Multi-pass operation, which can control, dissolves hydroxycarboxylic acid retarder preferably in polyalcohols retarder, and disperses
It obtains more uniformly.
A kind of preparation method of long-acting retarder provided by the embodiment of the present invention further include: by the first mixed liquor and second
Mixed liquor is mixed to get third mixed liquor.
Preferably, the first mixed liquor and the second mixed liquor 190 DEG C~210 DEG C high-temperature stirring 6~10 hours, obtain third
Mixed liquor.Within the said temperature range two kinds of mixed liquors be sufficiently stirred within 6~10 hours, esterification is anti-under the above conditions
The efficiency answered is higher, and side reaction is few, and the retarding effect duration of obtained long-acting retarder is longer.
A kind of preparation method of long-acting retarder provided by the embodiment of the present invention further include: by phosphoric acid class retarder, fibre
Plain class retarder is tieed up to mix with third mixed liquor.
Other types of retarder is added again after completion of the esterification reaction, it is possible to prevente effectively from other retarder are anti-to being esterified
The interference answered, obtaining can be with the long-acting retarder of the preceding middle and later periods of oversite concrete process of setting.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
A kind of long-acting retarder, preparation method are as follows:
S1, the glycerine of 50kg is placed in bottom, it is total that citric acid is added during being heated to 170 DEG C in three times
250kg is added a citric acid to abundant dissolution every time, opens stirring.
S2, will prepare and load weighted p-methyl benzenesulfonic acid 10kg and hydroxyanisol 0.01kg be added to 120kg glycerine
In, it is sufficiently stirred.
S3, it the S2 after mixing is at the uniform velocity added to after S1 is warming up to 195 DEG C, constant temperature stirs 8 hours.
S4, sodium tripolyphosphate 300kg and low-viscosity cellulose ether 1kg is added after the completion of S3, continues stirring 1 hour.
S5, dilution water is added in S4 to 50% concentration of solution, so as to pipeline and storage and application.
Embodiment 2
A kind of long-acting retarder, preparation method are as follows:
S1, the glycerine of 200kg is placed in bottom, it is total that citric acid is added during being heated to 170 DEG C in three times
550kg is added a tartaric acid to abundant dissolution every time, opens stirring.
S2, will prepare and it is load weighted concentrated sulfuric acid 40kg and hydroquinone 0.3kg are added into 260kg glycerine, into
Row is sufficiently stirred.
S3, it the S2 after mixing is at the uniform velocity added to after S1 is warming up to 195 DEG C, constant temperature stirs 8 hours.
S4, sodium tripolyphosphate 100kg and methylcellulose 1kg is added after the completion of S3, continues stirring 1 hour.
S5, dilution water is added in S4 to 50% concentration of solution, so as to pipeline and storage and application.
Embodiment 3
A kind of long-acting retarder, preparation method are as follows:
S1, the glycerine of 250kg is placed in bottom, it is total that lactic acid is added during being heated to 170 DEG C in three times
450kg is added a lactic acid to abundant dissolution every time, opens stirring.
S2, it will prepare and load weighted concentrated sulfuric acid 20kg and p methoxy phenol 0.3kg will be added to 310kg glycerine
In, it is sufficiently stirred.
S3, it the S2 after mixing is at the uniform velocity added to after S1 is warming up to 200 DEG C, constant temperature stirs 9 hours.
S4, potassium pyrophosphate 150kg and ethyl cellulose 1kg is added after the completion of S3, continues stirring 1 hour.
S5, dilution water is added in S4 to 50% concentration of solution, so as to pipeline and storage and application.
Embodiment 4
A kind of long-acting retarder, preparation method are as follows:
S1, the glycerine of 150kg is placed in bottom, it is total that lactic acid is added during being heated to 170 DEG C in three times
300kg is added a lactic acid to abundant dissolution every time, opens stirring.
S2, it will prepare and load weighted concentrated sulfuric acid 40kg and p methoxy phenol 0.2kg will be added to 260kg glycerine
In, it is sufficiently stirred.
S3, it the S2 after mixing is at the uniform velocity added to after S1 is warming up to 190 DEG C, constant temperature stirs 10 hours.
S4, sodium pyrophosphate 200kg and ethyl cellulose 1kg is added after the completion of S3, continues stirring 1 hour.
S5, dilution water is added in S4 to 50% concentration of solution, so as to pipeline and storage and application.
Embodiment 5
A kind of long-acting retarder, preparation method are as follows:
S1, the sorbierite of 250kg is placed in bottom, it is total that lactic acid is added during being heated to 170 DEG C in four times
450kg is added a lactic acid to abundant dissolution every time, opens stirring.
S2, it will prepare and load weighted concentrated sulfuric acid 40kg and p methoxy phenol 0.1kg will be added to 260kg sorbierite
In, it is sufficiently stirred.
S3, it the S2 after mixing is at the uniform velocity added to after S1 is warming up to 190 DEG C, constant temperature stirs 10 hours.
S4, dibutylphosphoric acid ester 250kg and ethyl cellulose 20kg is added after the completion of S3, continues stirring 1 hour.
S5, dilution water is added in S4 to 50% concentration of solution, so as to pipeline and storage and application.
Embodiment 6
A kind of long-acting retarder, preparation method are as follows:
S1, the diglycol of 300kg is placed in bottom, is heated to that lactic acid is added in four times during 170 DEG C
250kg is added a lactic acid to abundant dissolution every time, opens stirring.
S2, it will prepare and load weighted concentrated sulfuric acid 40kg and p methoxy phenol 0.1kg will be added to mono- contracting diethyl of 200kg
In glycol, it is sufficiently stirred.
S3, it the S2 after mixing is at the uniform velocity added to after S1 is warming up to 210 DEG C, constant temperature stirs 6 hours.
S4, diethyl phosphate 50kg and ethyl cellulose 10kg is added after the completion of S3, continues stirring 1 hour.
S5, dilution water is added in S4 to 50% concentration of solution, so as to pipeline and storage and application.
Test example
Long-acting retarder obtained by above-described embodiment 1~6 is tested for the property, specific test method is test specimens
Product are mixed in 20 DEG C and 40 DEG C with concrete, its retarding effect is observed, and record the presetting period and final setting time, test measure
Experimental result it is as shown in Table 1 and Table 2.
1 room temperature of table (20 DEG C) comparative test
2 high temperature of table (40 DEG C) comparative test
As shown in Tables 1 and 2 result, at normal temperature, long-acting retarder provided by Examples 1 to 6, mixed with concrete
After conjunction, Difference between initial setting times were at 8 hours or so, and final setting time difference is on 9 hours.In contrast, the sky of retarder is not used
White sample Difference between initial setting times were at 5 hours or so, and final setting time difference was at 6 hours or so, the Difference between initial setting times of commercially available retarder and end
The solidifying time difference is not up to 7 hours, and final setting time fails to reach 8 hours.And at high temperature, it is long-acting slow provided by Examples 1 to 6
Solidifying agent, after mixing with concrete, Difference between initial setting times are on 6 hours, and final setting time difference was at 7 hours or so.And compare it
Under, the blank sample Difference between initial setting times and final setting time difference that retarder is not used are at 5 hours or so, the initial set of commercially available retarder
Time difference and final setting time difference equally fail to reach 6 hours.As it can be seen that either at normal temperature or under high temperature, the present invention is implemented
Long-acting retarder provided by example 1~6 has better retarding effect compared with commercially available sample, slow under high temperature and room temperature
The solidifying time is far longer than commercial samples, illustrates that the sample that the present invention synthesizes has excellent retarding effect.
In conclusion the present invention provides a kind of long-acting retarder, by hydroxycarboxylic acid retarder, polyalcohols slow setting
Agent, phosphoric acid class retarder, esterification catalyst, polymerization inhibitor and cellulose family retarder are composed by a certain percentage.Hydroxyl carboxylic
Hydroxyl possessed by carboxyl possessed by acids retarder and polyalcohols retarder carries out ester in the presence of esterification catalyst
Change reaction, its slow setting component of products therefrom discharges the middle and later periods postponed to concrete setting process.In addition, the present invention compounds
The retarder of a variety of difference mechanism, makes the long-acting retarder equally have good slow setting to make in the early period of concrete setting process
With to reach the long-acting retarding effect for covering the preceding middle and later periods.Meanwhile the long-acting retarder be affected by temperature it is small, at high temperature still
So it is able to maintain excellent retarding effect.
It is the present invention also provides a kind of preparation method of long-acting retarder, hydroxycarboxylic acid retarder and part is polynary
Alcohols retarder is mixed to get the first mixed liquor；Add the second mixed liquor containing esterification catalyst；And allow the first mixed liquor
It is sufficiently mixed with the second mixed liquor after completing esterification, then compounded with other retarder.The preparation method is easy to operate,
It is low for equipment requirements, esterification products can be simply and efficiently obtained, large-scale industrial production is suitble to.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (14)
1. a kind of long-acting retarder, which is characterized in that according to parts by weight, raw material includes:
25~55 parts of hydroxycarboxylic acid retarder, 17~56 parts of polyalcohols retarder, 5~30 parts of phosphoric acid class retarder, esterification
1~4 part of catalyst, 0.001~0.03 part of polymerization inhibitor and 0.1~2 part of cellulose family retarder；
The long-acting retarder is prepared by following steps: by the hydroxycarboxylic acid retarder and the part polyalcohol
Class retarder is mixed to get the first mixed liquor；The esterification catalyst, the polymerization inhibitor and the remaining polyalcohols are delayed
Solidifying agent is mixed to get the second mixed liquor；First mixed liquor and second mixed liquor are blended at 190 DEG C~210 DEG C high
6~10 hours progress esterifications of temperature stirring obtain third mixed liquor；By the phosphoric acid class retarder, the cellulose family slow setting
Agent is mixed with the third mixed liquor.
2. long-acting retarder according to claim 1, which is characterized in that according to parts by weight, raw material includes:
30~55 parts of the hydroxycarboxylic acid retarder, 17~46 parts of the polyalcohols retarder, the phosphoric acid class retarder
10~30 parts, 2~4 parts of the esterification catalyst, 0.01~0.03 part of the polymerization inhibitor and the cellulose family retarder 1~
2 parts.
3. long-acting retarder according to claim 1, which is characterized in that the hydroxycarboxylic acid retarder includes hydroxyl carboxylic
At least one of acid and hydroxycarboxylate.
4. long-acting retarder according to claim 1, which is characterized in that the hydroxycarboxylic acid includes citric acid, tartaric acid
At least one of with lactic acid.
5. long-acting retarder according to claim 1, which is characterized in that the polyalcohols retarder include polyalcohol and
At least one of polyol derivative.
6. long-acting retarder according to claim 5, which is characterized in that the polyalcohol include ethylene glycol, glycerine and
At least one of sorbierite.
7. long-acting retarder according to claim 5, which is characterized in that the polyol derivative includes a contracting diethyl two
Alcohol, contracting at least one of two glycerine and polyethylene glycol.
8. long-acting retarder according to claim 1, which is characterized in that the phosphoric acid class retarder includes phosphate and phosphorus
At least one of acid esters.
9. long-acting retarder according to claim 8, which is characterized in that the phosphate includes two Quadrafos, trimerization
At least one of phosphate and pyrophosphate.
10. long-acting retarder according to claim 8, which is characterized in that the phosphate includes phosphate monoester and phosphoric acid
At least one of diester.
11. long-acting retarder according to claim 1, which is characterized in that the esterification catalyst include p-methyl benzenesulfonic acid,
At least one of concentrated sulfuric acid.
12. long-acting retarder according to claim 1, which is characterized in that the polymerization inhibitor includes p-hydroxyanisole, right
At least one of benzenediol, p methoxy phenol.
13. long-acting retarder according to claim 1, which is characterized in that the cellulose family retarder includes low viscosity
At least one of cellulose ether, methylcellulose, ethyl cellulose.
14. a kind of preparation method of such as described in any item long-acting retarder of claim 1~13 characterized by comprising
The hydroxycarboxylic acid retarder and the part polyalcohols retarder are mixed to get the first mixed liquor；
The esterification catalyst, the polymerization inhibitor and the remaining polyalcohols retarder are mixed to get the second mixed liquor；
First mixed liquor and second mixed liquor are blended in 190 DEG C~210 DEG C high-temperature stirrings, 6~10 hours progress esters
Change reaction and obtains third mixed liquor；
The phosphoric acid class retarder, the cellulose family retarder are mixed with the third mixed liquor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710578594.8A CN107188451B (en) | 2017-07-17 | 2017-07-17 | A kind of long-acting retarder and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710578594.8A CN107188451B (en) | 2017-07-17 | 2017-07-17 | A kind of long-acting retarder and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107188451A CN107188451A (en) | 2017-09-22 |
| CN107188451B true CN107188451B (en) | 2019-09-03 |
Family
ID=59883363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710578594.8A Active CN107188451B (en) | 2017-07-17 | 2017-07-17 | A kind of long-acting retarder and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107188451B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111253103B (en) * | 2020-01-20 | 2023-02-24 | 烟台大学 | Two-step method based concrete admixture preparation method, concrete admixture and application |
| CN112390927A (en) * | 2020-10-30 | 2021-02-23 | 武汉善达化工有限公司 | Retarder for refractory material |
| CN113292267B (en) * | 2021-01-15 | 2023-03-17 | 云南森博混凝土外加剂有限公司 | Malt syrup retarder and preparation method and application thereof |
| CN113185173B (en) * | 2021-04-30 | 2022-08-12 | 贵州石博士科技股份有限公司 | Novel concrete retarder and preparation method thereof |
| CN113948300A (en) * | 2021-09-09 | 2022-01-18 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Method for connecting dry-type high-voltage bushing capacitor core and flange |
| CN115448636A (en) * | 2022-09-30 | 2022-12-09 | 交通运输部公路科学研究所 | Long-acting retarder and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182158A (en) * | 2007-11-26 | 2008-05-21 | 江苏博特新材料有限公司 | High-temperature retarders suitable for polycarboxylate concrete dehydragent and method for making same |
| CN106279572A (en) * | 2016-07-26 | 2017-01-04 | 上海台界化工有限公司 | A kind of retarder for building containing poly-aspartate and preparation method thereof |
| CN106277909A (en) * | 2016-08-19 | 2017-01-04 | 桂林华越环保科技有限公司 | Concrete retarder |
| CN106336142A (en) * | 2015-07-07 | 2017-01-18 | 刘夕平 | Cement retarder for oil wells |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6179128B2 (en) * | 2013-02-28 | 2017-08-16 | 株式会社大林組 | Compaction material using coal ash and method for producing the same |
-
2017
- 2017-07-17 CN CN201710578594.8A patent/CN107188451B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182158A (en) * | 2007-11-26 | 2008-05-21 | 江苏博特新材料有限公司 | High-temperature retarders suitable for polycarboxylate concrete dehydragent and method for making same |
| CN106336142A (en) * | 2015-07-07 | 2017-01-18 | 刘夕平 | Cement retarder for oil wells |
| CN106279572A (en) * | 2016-07-26 | 2017-01-04 | 上海台界化工有限公司 | A kind of retarder for building containing poly-aspartate and preparation method thereof |
| CN106277909A (en) * | 2016-08-19 | 2017-01-04 | 桂林华越环保科技有限公司 | Concrete retarder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107188451A (en) | 2017-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107188451B (en) | A kind of long-acting retarder and preparation method thereof | |
| AU676965B2 (en) | Water-resistant gypsum compositions and emulsion for making same | |
| CN109081629A (en) | A kind of no chlorine enhancing collapse protection type cement grinding aid and preparation method thereof | |
| JP2005503991A (en) | Curing accelerator composition | |
| CN102617061B (en) | Ultra retarder for concrete and preparation method for ultra retarder | |
| CN113292673B (en) | Modified malt syrup retarder and preparation method and application thereof | |
| JPS61129160A (en) | Manufacture of surface active condensate | |
| RU2594381C1 (en) | Method for stabilisation of beta-hemihydrate gypsum plaster | |
| CN108483983A (en) | A kind of concrete compound retarder | |
| CN101735266B (en) | Method for synthesizing n-butyl phosphate mono-ester/diester | |
| CN107722050A (en) | The preparation method of phosphate | |
| JPS59131506A (en) | Manufacture of high purity trimagnesium phosphate octahydrate | |
| CN112979203B (en) | Cement concrete hydration heat inhibitor containing water-soluble cage-type inclusion compound and preparation method and application thereof | |
| KR101753357B1 (en) | Method for manufacturing thiamine dilaurylsulfate in organic solvent-free system | |
| CN105503141A (en) | Waste-residue and magnesium-phosphate cement self-leveling mortar | |
| CN114702260A (en) | Retarder for light gypsum and preparation method thereof | |
| CN108395138A (en) | A kind of accelerator for cement slurry | |
| CN104693483A (en) | Preparation method of high-dispersibility melamine pyrophosphate fire retardant | |
| CN108060037B (en) | Soap powder composition of sodium oleate and its preparation method | |
| US4523954A (en) | Process for manufacturing cellular plaster and molded plaster articles | |
| CN112573858A (en) | Polymer gypsum retarder and preparation method and application thereof | |
| US4487749A (en) | Dicalcium phosphate dihydrate having improved monofluorophosphate compatibility and process for the preparation thereof | |
| JPS58135165A (en) | Cement dispersive composition | |
| CN114656188B (en) | Composite gypsum retarder and preparation method thereof | |
| US2745759A (en) | Cementitious composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |