CN107188451A - A kind of long-acting retarder and preparation method thereof - Google Patents
A kind of long-acting retarder and preparation method thereof Download PDFInfo
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- CN107188451A CN107188451A CN201710578594.8A CN201710578594A CN107188451A CN 107188451 A CN107188451 A CN 107188451A CN 201710578594 A CN201710578594 A CN 201710578594A CN 107188451 A CN107188451 A CN 107188451A
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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
- 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
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
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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 equally had good deferred action in the early stage of concrete setting process, to reach the long-acting retarding effect of middle and later periods before covering.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 allow the first mixed liquor and the second mixed liquor to be sufficiently mixed after completion 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 adapted to large-scale industrial production.
Description
Technical field
The present invention relates to building material technical field, in particular to a kind of long-acting retarder and preparation method thereof.
Background technology
Retarder is a kind of a kind of additive that can delay to extend concrete coagulating time, and its main mode of action is
Delay the hydration rate of cement and admixture, allow concrete to possess certain construction plasticity in the longer time.Current city
Concrete is more with retarder kind on field, different its using effect of retarder, the use of 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 composition is tricalcium aluminate ＞ tetra calcium aluminoferrites to the influence order of condensation and hydration heat
＞ tricalcium silicate ＞ dicalcium silicates.Therefore, under equal volume, the retarder cement retardative effect high to tricalcium aluminate content compared with
Difference.And for same concrete with retarder using above having the following disadvantages：
One is quick with the presetting period from nothing to concrete when increasing to a certain amount of of concrete retarder
Extension, the continuation increase concrete retarder concrete initial set time shows amount of increase and slowed 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 to increase also
Have blood coagulation enhancing effect.
Two be higher or in the case that cement temperatures are higher in environment temperature, and the presetting period of concrete can greatly carry
It is preceding to be difficult to face or even solidifying tank so that smear concrete occur sometimes, cause other larger concrete quality accidents, and
In the case of a high temperature, conventional concrete is undesirable with retarder action effect, and temperature is higher, its action concrete slow setting effect
Fruit is poorer.
The content of the invention
The first object of the present invention is a kind of long-acting retarder of offer, and it has the spy of retarding effect duration length
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, it is low for equipment requirements, it is adapted to large-scale industrial production.Obtained long-acting retarder under the conditions of high temperature, long-time according to
So there is preferable retarding effect.
What the present invention was realized in：
A kind of long-acting retarder, is counted by weight, and its raw material includes：25~55 parts of hydroxycarboxylic acid retarder, it is 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, including：
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 the 3rd mixed liquor；
Phosphoric acid class retarder, cellulose family retarder are mixed with the 3rd mixed liquor.
The beneficial effect of the embodiment of the present invention is：
The invention provides a kind of long-acting retarder, by hydroxycarboxylic acid retarder, polyalcohols retarder, phosphoric acid class is delayed
Solidifying agent, esterification catalyst, polymerization inhibitor and cellulose family retarder are combined by a certain percentage.Hydroxycarboxylic acid retarder institute
The hydroxyl that the carboxyl and polyalcohols retarder having have carries out esterification, gained production in the presence of esterification catalyst
Its slow setting component of thing discharges the middle and later periods postponed to concrete setting process.In addition, the present invention has compounded a variety of different mechanism
Retarder, the long-acting retarder is equally had good deferred action in the early stage of concrete setting process, covered with reaching
The long-acting retarding effect of middle and later periods before lid.Meanwhile, the long-acting retarder is affected by temperature small, is maintained at high temperature excellent
Different retarding effect.
Present invention also offers a kind of preparation method of long-acting retarder, it is polynary by hydroxycarboxylic acid retarder and part
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 completion 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, are adapted to large-scale industrial production.
Embodiment
, below will be in the embodiment of the present invention to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer
Technical scheme be clearly and completely described.Unreceipted actual conditions person, builds according to normal condition or manufacturer in embodiment
The condition of view is carried out.Agents useful for same or the unreceipted production firm person of instrument, are 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, counts by weight, its 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, its raw material includes：30~55 parts of hydroxycarboxylic acid retarder, 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.Found by the creative work of inventor, the long-acting retarder retarding effect synthesized under this ratio more preferably, can have longer
Slow setting 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.The long-acting retarder effect obtained when wherein especially using citric acid as raw material is best.
A number of carboxyl (- COOH), carboxyl is with 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, by hydrogen bond association, along with the hydrogen bond association between hydrone, form cement particle surface easily 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+The unstable complex compound of generation, the Ca in aquation controls liquid phase initial stage2+
Concentration, produce 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 esterification life occurs for the hydroxyl (- OH) and carboxyl (- COOH) in alcohol
Into ester also have 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.Found by the creative work of inventor, it is above-mentioned
Several polyalcohols and polyol derivative have an excellent retarding effect, and with the efficiency of hydroxycarboxylic acid retarder formation ester bond
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 of extension retarding effect.By forming stable ester bond, hydroxycarboxylic acid retarder can be caused and many
The component that retarding effect can be produced in first alcohols retarder is delayed to the middle and later periods release of concrete setting process, so that slow
Solidifying effect duration is longer.Wherein, esterification catalyst be in acid catalyst, including p-methyl benzenesulfonic acid, the concentrated sulfuric acid at least
It is a kind of.Found by inventor's creative work, above esterification catalyst can obtain higher esterifying efficiency, so that 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 number of carboxyl (- COOH), carboxyl on its molecular structure
And suction-operated, it is attracted on the nucleus of hyrate (embryos), hinders entringite continued growth, mainly to calcium sulfate water
Compound crystallization conversion process delays and postponed.The two has very strong retarding effect, mainly uses its carboxylate in concrete
The characteristics of middle and later periods still discharges slow setting component, its possible reaction equation is：
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 extension release, reach the purpose for maintaining retarding effect.
Further, polytype retarder has also been compounded in the embodiment of the present invention, to make the long-acting retarder in coagulation
The early stage of native process of setting equally maintains preferable retarding effect.
Phosphoric acid class retarder includes at least one of phosphate and phosphate；Phosphate is used as auxiliary addition agent and hydroxide
Calcium reaction forms insoluble calcium phosphate in cement particle surface, can reach retarding effect.Phosphate include two Quadrafos,
At least one of tripolyphosphate and pyrophosphate, for the metal ion into 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..Found by inventor's creative work, above-mentioned several materials 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+There are complexing, phosphate and hydrogen Deng metal ion
Calcium oxide reaction forms insoluble calcium phosphate in cement particle surface, and its 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, fine
The plain class retarder of dimension has thickening, the effect of water conservation, while having certain retarding effect, ensure that long-acting retarder is good
Performance.Found by inventor's performing creative labour, 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 MEHQ, hydroquinones, p methoxy phenol.Polymerization inhibitor can hinder
The only aggregation between particle, is conducive to improving the retarding effect of long-acting retarder.
The embodiment of the present invention additionally provides a kind of preparation method of long-acting retarder, including：
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, can be avoided after esterification starts
Because feed distribution is uneven, local reaction excessive concentration is caused so that esterification efficiency is reduced, accessory substance 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 a part of dispersant, allow esterification catalyst and polymerization inhibitor uniformly to scatter, make esterification more uniform high when carrying out
Effect.
Further, when preparing the first mixed liquor, the number of times of mixing point is multiple, and hydroxycarboxylic acid retarder correspondence is mixed
Close number of times and be divided into many parts, mixing every time includes：Any a hydroxycarboxylic acid is added into the polyalcohols retarder of heating to delay
Solidifying agent.Multi-pass operation can control to make hydroxycarboxylic acid retarder preferably dissolve in polyalcohols retarder, and disperse
It must be more uniformly distributed.
A kind of preparation method for long-acting retarder that the embodiment of the present invention is provided also includes：By the first mixed liquor and second
Mixed liquor is mixed to get the 3rd mixed liquor.
Preferably, the first mixed liquor and the second mixed liquor obtained the 3rd in 190 DEG C~210 DEG C high-temperature stirrings 6~10 hours
Mixed liquor.Two kinds of mixed liquors are carried out in the range of said temperature to be sufficiently stirred within 6~10 hours, are esterified under these conditions anti-
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 for long-acting retarder that the embodiment of the present invention is provided also includes：By phosphoric acid class retarder, fibre
The plain class retarder of dimension is mixed with the 3rd 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.
The feature and performance to the present invention are described in further detail with reference to embodiments.
Embodiment 1
A kind of long-acting retarder, its preparation method is as follows：
S1,50kg glycerine is placed in bottom, adds citric acid during being heated to 170 DEG C in three times and add up to
250kg, adds a citric acid to abundant dissolving, opens stirring every time.
S2, will prepare and load weighted p-methyl benzenesulfonic acid 10kg and hydroxyanisol 0.01kg add to 120kg glycerine
In, it is sufficiently stirred for.
S3, the S2 after mixing at the uniform velocity added to 195 DEG C are warming up to after S1, constant temperature is stirred 8 hours.
S4, the addition sodium tripolyphosphate 300kg and low-viscosity cellulose ether 1kg after the completion of S3, continue to stir 1 hour.
S5, in S4 add dilution water to the concentration of solution 50%, so as to pipeline and storage and application.
Embodiment 2
A kind of long-acting retarder, its preparation method is as follows：
S1,200kg glycerine is placed in bottom, adds citric acid during being heated to 170 DEG C in three times and add up to
550kg, adds a tartaric acid to abundant dissolving, opens stirring every time.
S2, will prepare and it is load weighted concentrated sulfuric acid 40kg and hydroquinones 0.3kg are added into 260kg glycerine, enter
Row is sufficiently stirred for.
S3, the S2 after mixing at the uniform velocity added to 195 DEG C are warming up to after S1, constant temperature is stirred 8 hours.
S4, the addition sodium tripolyphosphate 100kg and methylcellulose 1kg after the completion of S3, continue to stir 1 hour.
S5, in S4 add dilution water to the concentration of solution 50%, so as to pipeline and storage and application.
Embodiment 3
A kind of long-acting retarder, its preparation method is as follows：
S1,250kg glycerine is placed in bottom, adds lactic acid during being heated to 170 DEG C in three times and add up to
450kg, adds a lactic acid to abundant dissolving, opens stirring every time.
S2, it will prepare and load weighted concentrated sulfuric acid 20kg and p methoxy phenol 0.3kg be added to 310kg glycerine
In, it is sufficiently stirred for.
S3, the S2 after mixing at the uniform velocity added to 200 DEG C are warming up to after S1, constant temperature is stirred 9 hours.
S4, the addition potassium pyrophosphate 150kg and ethyl cellulose 1kg after the completion of S3, continue to stir 1 hour.
S5, in S4 add dilution water to the concentration of solution 50%, so as to pipeline and storage and application.
Embodiment 4
A kind of long-acting retarder, its preparation method is as follows：
S1,150kg glycerine is placed in bottom, adds lactic acid during being heated to 170 DEG C in three times and add up to
300kg, adds a lactic acid to abundant dissolving, opens stirring every time.
S2, it will prepare and load weighted concentrated sulfuric acid 40kg and p methoxy phenol 0.2kg be added to 260kg glycerine
In, it is sufficiently stirred for.
S3, the S2 after mixing at the uniform velocity added to 190 DEG C are warming up to after S1, constant temperature is stirred 10 hours.
S4, the addition sodium pyrophosphate 200kg and ethyl cellulose 1kg after the completion of S3, continue to stir 1 hour.
S5, in S4 add dilution water to the concentration of solution 50%, so as to pipeline and storage and application.
Embodiment 5
A kind of long-acting retarder, its preparation method is as follows：
S1,250kg sorbierite is placed in bottom, adds lactic acid during being heated to 170 DEG C in four times and add up to
450kg, adds a lactic acid to abundant dissolving, opens stirring every time.
S2, it will prepare and load weighted concentrated sulfuric acid 40kg and p methoxy phenol 0.1kg be added to 260kg sorbierites
In, it is sufficiently stirred for.
S3, the S2 after mixing at the uniform velocity added to 190 DEG C are warming up to after S1, constant temperature is stirred 10 hours.
S4, the addition dibutylphosphoric acid ester 250kg and ethyl cellulose 20kg after the completion of S3, continue to stir 1 hour.
S5, in S4 add dilution water to the concentration of solution 50%, so as to pipeline and storage and application.
Embodiment 6
A kind of long-acting retarder, its preparation method is as follows：
S1,300kg diglycol is placed in bottom, is heated to adding lactic acid in four times during 170 DEG C
250kg, adds a lactic acid to abundant dissolving, opens stirring every time.
S2, it will prepare and load weighted concentrated sulfuric acid 40kg and p methoxy phenol 0.1kg be added to the contracting diethyls of 200kg mono-
In glycol, it is sufficiently stirred for.
S3, the S2 after mixing at the uniform velocity added to 210 DEG C are warming up to after S1, constant temperature is stirred 6 hours.
S4, the addition diethyl phosphate 50kg and ethyl cellulose 10kg after the completion of S3, continue to stir 1 hour.
S5, in S4 add dilution water to the concentration of solution 50%, so as to pipeline and storage and application.
Test example
Long-acting retarder obtained by above-described embodiment 1~6 is subjected to performance test, specific method of testing is test specimens
Product are mixed at 20 DEG C and 40 DEG C with concrete, observe its retarding effect, record presetting period and final setting time, and test is measured
Experimental result as shown in Table 1 and Table 2.
The normal temperature of table 1 (20 DEG C) contrast test
The high temperature of table 2 (40 DEG C) contrast test
As shown in Tables 1 and 2 result, at normal temperatures, the long-acting retarder that embodiment 1~6 is provided, mixed with concrete
After conjunction, its Difference between initial setting times was at 8 hours or so, and final setting time difference is on 9 hours.Under 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 that embodiment 1~6 is provided
Solidifying agent, after being mixed with concrete, its Difference between initial setting times is on 6 hours, and final setting time difference was at 7 hours or so.And contrast it
Under, the blank sample Difference between initial setting times and final setting time difference of retarder are not used 5 hours or so, the initial set of commercially available retarder
Time difference and final setting time difference equally fail to reach 6 hours.It can be seen that, either at normal temperatures or under high temperature, the present invention is implemented
The long-acting retarder that example 1~6 is provided has more preferable retarding effect compared with commercially available sample, slow under high temperature and normal temperature
The solidifying time is far longer than commercial samples, illustrates that the sample that the present invention is synthesized has excellent retarding effect.
In summary, the 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 combined by a certain percentage.Hydroxyl carboxylic
The hydroxyl that the carboxyl and polyalcohols retarder that acids retarder has have 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 is compounded
The retarder of a variety of different mechanism, makes the long-acting retarder equally have good slow setting to make in the early stage of concrete setting process
With to reach the long-acting retarding effect of middle and later periods before covering.Meanwhile, the long-acting retarder be affected by temperature it is small, at high temperature still
Excellent retarding effect can so be kept.
Present invention also offers a kind of preparation method of long-acting retarder, it is polynary by hydroxycarboxylic acid retarder and part
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 completion 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, are adapted to large-scale industrial production.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of long-acting retarder, it is characterised in that count by weight, its 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
0.1~2 part of 1~4 part of catalyst, 0.001~0.03 part of polymerization inhibitor and cellulose family retarder.
2. long-acting retarder according to claim 1, it is characterised in that count by weight, its 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, it is characterised in that the hydroxycarboxylic acid retarder includes hydroxyl carboxylic
At least one of acid and hydroxycarboxylate；Preferably, the hydroxycarboxylic acid is included in citric acid, tartaric acid and lactic acid at least
It is a kind of.
4. long-acting retarder according to claim 1, it is characterised in that the polyalcohols retarder include polyalcohol and
At least one of polyol derivative；Preferably, the polyalcohol includes at least one in ethylene glycol, glycerine and sorbierite
Kind；Preferably, the polyol derivative includes at least one in diglycol, two glycerine of contracting and polyethylene glycol
Kind.
5. long-acting retarder according to claim 1, it is characterised in that the phosphoric acid class retarder includes phosphate and phosphorus
At least one of acid esters；Preferably, the phosphate is included in two Quadrafos, tripolyphosphate and pyrophosphate at least
It is a kind of；Preferably, the phosphate includes at least one of phosphate monoester and di-phosphate ester.
6. long-acting retarder according to claim 1, it is characterised in that the esterification catalyst include p-methyl benzenesulfonic acid,
At least one of concentrated sulfuric acid.
7. long-acting retarder according to claim 1, it is characterised in that the polymerization inhibitor includes MEHQ, right
At least one of benzenediol, p methoxy phenol.
8. long-acting retarder according to claim 1, it is characterised in that it is fine that the cellulose family retarder includes low viscosity
At least one of the plain ether of dimension, methylcellulose, ethyl cellulose.
9. a kind of preparation method of long-acting retarder as described in any one of claim 1~8, it is characterised in that including：
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 mixed to get the 3rd mixed liquor；
The phosphoric acid class retarder, the cellulose family retarder are mixed with the 3rd mixed liquor.
10. the preparation method of long-acting retarder according to claim 9, it is characterised in that by first mixed liquor with
Second mixed liquor obtained the 3rd mixed liquor in 190 DEG C~210 DEG C high-temperature stirrings 6~10 hours.
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| CN113185173A (en) * | 2021-04-30 | 2021-07-30 | 贵州石博士科技股份有限公司 | Novel concrete retarder and preparation method thereof |
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| 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 |
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| CN111253103A (en) * | 2020-01-20 | 2020-06-09 | 烟台大学 | Two-step method based concrete admixture preparation method, concrete admixture and application |
| CN111253103B (en) * | 2020-01-20 | 2023-02-24 | 烟台大学 | Two-step method based concrete admixture preparation method, concrete admixture and application |
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| CN113292267A (en) * | 2021-01-15 | 2021-08-24 | 云南森博混凝土外加剂有限公司 | Malt syrup retarder and preparation method and application thereof |
| CN113185173A (en) * | 2021-04-30 | 2021-07-30 | 贵州石博士科技股份有限公司 | Novel concrete retarder and preparation method 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 |
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