CN108218286A - A kind of cement grinding aid and preparation method thereof - Google Patents
A kind of cement grinding aid and preparation method thereof Download PDFInfo
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- CN108218286A CN108218286A CN201810164124.1A CN201810164124A CN108218286A CN 108218286 A CN108218286 A CN 108218286A CN 201810164124 A CN201810164124 A CN 201810164124A CN 108218286 A CN108218286 A CN 108218286A
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- Prior art keywords
- grinding aid
- cement
- emulsifier
- cement grinding
- polyalcohol amine
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- 238000000227 grinding Methods 0.000 title claims abstract description 50
- 239000004568 cement Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229920002472 Starch Polymers 0.000 claims abstract description 33
- 235000019698 starch Nutrition 0.000 claims abstract description 33
- 239000008107 starch Substances 0.000 claims abstract description 33
- 150000002148 esters Chemical class 0.000 claims abstract description 30
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 23
- 150000001412 amines Chemical class 0.000 claims abstract description 21
- 150000005846 sugar alcohols Polymers 0.000 claims abstract description 21
- 229920000642 polymer Polymers 0.000 claims abstract description 20
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 14
- 235000011187 glycerol Nutrition 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 13
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims abstract description 11
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims abstract description 10
- 235000013379 molasses Nutrition 0.000 claims abstract description 10
- 239000001632 sodium acetate Substances 0.000 claims abstract description 10
- 235000017281 sodium acetate Nutrition 0.000 claims abstract description 10
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims abstract description 6
- 238000010559 graft polymerization reaction Methods 0.000 claims abstract description 6
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 6
- 229920000570 polyether Polymers 0.000 claims abstract description 6
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 28
- 238000003756 stirring Methods 0.000 claims description 20
- 235000019441 ethanol Nutrition 0.000 claims description 19
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 14
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical group Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- 239000003054 catalyst Substances 0.000 claims description 10
- 238000010992 reflux Methods 0.000 claims description 10
- -1 sulfuric acid Ester Chemical class 0.000 claims description 10
- 238000010792 warming Methods 0.000 claims description 10
- 239000000839 emulsion Substances 0.000 claims description 6
- 238000006116 polymerization reaction Methods 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 6
- ZORQXIQZAOLNGE-UHFFFAOYSA-N 1,1-difluorocyclohexane Chemical compound FC1(F)CCCCC1 ZORQXIQZAOLNGE-UHFFFAOYSA-N 0.000 claims description 5
- 229920001353 Dextrin Polymers 0.000 claims description 5
- 239000004375 Dextrin Substances 0.000 claims description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 claims description 5
- 235000013339 cereals Nutrition 0.000 claims description 5
- 235000019425 dextrin Nutrition 0.000 claims description 5
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 5
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 5
- 229930195729 fatty acid Natural products 0.000 claims description 5
- 239000000194 fatty acid Substances 0.000 claims description 5
- 229920001592 potato starch Polymers 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 5
- 239000013049 sediment Substances 0.000 claims description 5
- 239000001593 sorbitan monooleate Substances 0.000 claims description 5
- 235000011069 sorbitan monooleate Nutrition 0.000 claims description 5
- 229940035049 sorbitan monooleate Drugs 0.000 claims description 5
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid group Chemical class S(N)(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000008399 tap water Substances 0.000 claims description 5
- 235000020679 tap water Nutrition 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 2
- 239000000052 vinegar Substances 0.000 claims description 2
- 235000021419 vinegar Nutrition 0.000 claims description 2
- 239000002202 Polyethylene glycol Substances 0.000 claims 1
- 150000001335 aliphatic alkanes Chemical class 0.000 claims 1
- 235000012907 honey Nutrition 0.000 claims 1
- 229920001223 polyethylene glycol Polymers 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229920000151 polyglycol Polymers 0.000 abstract description 5
- 239000010695 polyglycol Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229920000056 polyoxyethylene ether Polymers 0.000 description 3
- 229940051841 polyoxyethylene ether Drugs 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- ZZVUWRFHKOJYTH-UHFFFAOYSA-N diphenhydramine Chemical compound C=1C=CC=CC=1C(OCCN(C)C)C1=CC=CC=C1 ZZVUWRFHKOJYTH-UHFFFAOYSA-N 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- C04B2103/52—Grinding aids; Additives added during grinding
Abstract
The present invention proposes a kind of cement grinding aid, comprising following components and is calculated in mass percent calculation：Water soluble starch sulfuric ester high molecular polymer：30%~40%, polyalcohol amine：10%~20%, acetic acid：5%~10%, emulsifier：0.01%~0.05%, molasses 5%~20%, sodium lignin sulfonate 5%~10%, sodium acetate 5~10%, glycerine 1~5%, the polyalcohol amine polyalcohol amine is by containing polynary amino, the high-molecular compound that the organic compound of multi-hydroxy and carboxyl is formed through graft polymerization, the emulsifier is polyglycol ether for polyethers, it can be as emulsifier using other polymers, the cement grinding aid and preparation method thereof, with inexpensive, it is easy to get, efficiently, production process simple Liquid grinding aid, it is of the invention compared with existing cement grinding aid, a large amount of polar group is gathered, mutually collaboration, reduce tailing over for 45 μm of cement, increase the specific surface area of cement, improve the intensity of cement each age.
Description
Technical field
The present invention paddles soluble starch sulfuric ester processing technique field, specially a kind of cement grinding aid and its preparation side
Method.
Background technology
The production of portland cement is generally lumped into as " two mills one are burnt ".Powder grinding process capacity usage ratio is extremely low, about
The energy conversion for having 97% is lost in for thermal energy.The 60% of total energy consumption is about occupied in the grinding process of the powders such as clinker, only about
0.6%~1% energy is really for increasing the new surface of material, and not only consume energy height in the grinding process of manufacture of cement, but also
Easily there is phenomena such as " packet ball ", " liner ", this seriously reduces the quality of cement products, increases the cost of production cement.
In comparison, grinding aid is added in cement pulverizing course not needing to spend a large amount of investment, simple and practicable, warp
Both meanings of Ji benefit and practical application have both at the same time.Cement grinding aid can adsorb the high energy activity in reinforcement fracture microgroove
It on point, reduces free energy while penetrates into fine particle fine crack, foreign ion or molecule are provided, reduce powder electrostatic and make
With preventing from coalescing, increase the specific surface area of cement, improve the content of 3~32 μm of particles of cement.
Existing frequently-used cement grinding aid alcamines（Triethanolamine accounts for the 70% of total amount）Higher price, by market clout
It is bigger, and grinding-aid effect is unstable, cement later stage bending and compressive strength is acted on smaller.One pack system grinding aid is only containing one kind
Or the active material of two kinds of polar groups, grinding-aid effect is not satisfactory, therefore the grinding aid compounded is widely used.
Invention content
The technical problem to be solved by the present invention is to overcome the existing defects, provides a kind of cement grinding aid and its preparation side
Method, have it is inexpensive, be easy to get, efficiently, production process simple Liquid grinding aid, it is of the invention compared with existing cement grinding aid, collection
A large amount of polar group has been closed, has mutually cooperateed with, reduces tailing over for 45 μm of cement, has increased the specific surface area of cement, has improved water
The intensity of mud each age, can effectively solve the problems in background technology.
To achieve the above object, the present invention proposes：A kind of cement grinding aid comprising following components and is calculated in mass percent
It calculates：Water soluble starch sulfuric ester high molecular polymer：30%~40%, polyalcohol amine：10%~20%, acetic acid：5%~10%, emulsification
Agent：0.01%~0.05%, molasses 5%~20%, sodium lignin sulfonate 5%~10%, sodium acetate 5~10%, glycerine 1~5%.
As a preferred technical solution of the present invention：The polyalcohol amine polyalcohol amine is by containing polynary amino, more
The high-molecular compound that the organic compound of first hydroxyl and carboxyl is formed through graft polymerization.
As a preferred technical solution of the present invention：The emulsifier is polyglycol ether for polyethers, can be poly- with other
Emulsifier can be used as by closing object, such as：Sorbitan monooleate（Hard acid ester）, glycerol fatty acid ester, alkylphenol-polyethenoxy
Ether, OP~10 etc..
The present invention also provides a kind of preparation methods of cement grinding aid：Include the following steps：
The first step：The preparation method of water soluble starch sulfuric ester grinding aid, includes the following steps：
1）The three-necked flask equipped with mechanical agitator, thermometer and reflux condensing tube is taken, adds in 1.5~3.5 part of 95% ethyl alcohol conduct
Dispersant is adding in 1~2 part of starch（Cereals or potato starch）, 0.05~0.08 part of catalyst（Catalyst is hydrochloric acid),
It is dispersed with stirring uniformly, is warming up to 50~70 DEG C of beginning timing, reacts 8~12 hours, water washing 6~8 times, filter to obtain limit paste
Essence；
2）In the three-necked flask equipped with mechanical agitator, thermometer and reflux condensing tube, 12~20 parts of N, N~dimethyl are first added in
Formamide, 3~5 parts of sulfamic acids, 6~10 parts of limit dextrins are dispersed with stirring, are warming up to 80 DEG C~110 DEG C, and reaction 1~3 is small
When, sodium hydroxide solution is neutralized to pH=8~10, and ethyl alcohol alcohol precipitation, centrifugation recycling sediment, 30~40 DEG C are dried to obtain shallow lake
Powder sulfuric ester；
Second step：Tap water is injected in reaction kettle, adds in water soluble starch sulfuric ester high molecular polymerization while stirring in sequence
Object：30%~40%, polyalcohol amine：10%~20%, acetic acid：5%~10%, molasses 5%~20%, sodium lignin sulfonate 5%~10%, vinegar
Sour sodium 5~10%, glycerine 1~5%, careful stirring 15 minutes until starch sulphate all dissolves, obtain liquid grinding aid
（Temperature setting is 30~70 DEG C at this time）, then just by the liquid grinding aid and emulsifier that dissolve：0.01%~0.05% adds together
Enter emulsifier and carry out emulsion dispersion, obtain cement grinding aid.
Compared with prior art, the beneficial effects of the invention are as follows：
1. starch source is extensive, type is more, and yield is big, and price is low, and the selectivity of sulfamic acid opposite end position hydroxyl is strong, there is reaction
Mildly, yield is high, the shortcomings that overcoming the reactions such as the concentrated sulfuric acid, oleum easy carbonized product, the degree of substitution of sulfate for 0.2~
0.25.The preparation process of starch sulphate is simple, and reaction is milder, it is easy to accomplish amplification test.
2. the grinding aid of synthesis is emulsion liquid, stable homogeneous, no precipitation is long placed in, pH is 6~10, not chloride ion-containing.
It is 0.01%~0.04% 3. incorporation is relatively low.
4. there is good grinding-aid effect, 45 μm can be reduced and tail over value, increase the content of 3~32 μm of cement granules, improve water
The specific surface area of mud improves each age bending and compressive strength of cement slurry, adapts to most of situation and uses.
Description of the drawings
Fig. 1 is a kind of preparation flow figure of cement grinding aid of the present invention；
Fig. 2 is the preparation flow figure of water soluble starch sulfuric ester grinding aid of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
- 2 are please referred to Fig.1, the present invention provides following technical scheme：
Embodiment one：Water soluble starch sulfuric ester high molecular polymer：30%th, polyalcohol amine：10%th, acetic acid：6%th, emulsifier：
0.02%th, water：58.98%th, molasses：6%, sodium lignin sulfonate：6%, sodium acetate：6%, glycerine：2%, polyalcohol amine polyalcohol amine
It is the high-molecular compound formed by the organic compound for containing polynary amino, multi-hydroxy and carboxyl through graft polymerization, emulsifies
Agent is polyglycol ether for polyethers, can be as emulsifier, such as using other polymers：Sorbitan monooleate（Hard acid
Ester）, glycerol fatty acid ester, alkyl phenol polyoxyethylene ether, OP~10 etc..
The present invention also provides a kind of preparation methods of cement grinding aid：Include the following steps：
The first step：The preparation method of water-soluble water soluble starch sulfuric ester high molecular polymer grinding aid, includes the following steps：
1）The three-necked flask equipped with mechanical agitator, thermometer and reflux condensing tube is taken, adds in 1.5~3.5 part of 95% ethyl alcohol conduct
Dispersant is adding in 1~2 part of starch（Cereals or potato starch）, 0.05~0.08 part of catalyst（Catalyst is hydrochloric acid),
It is dispersed with stirring uniformly, is warming up to 50~70 DEG C of beginning timing, reacts 8~12 hours, water washing 6~8 times, filter to obtain limit paste
Essence；
2）In the three-necked flask equipped with mechanical agitator, thermometer and reflux condensing tube, 12~20 parts of N, N~dimethyl are first added in
Formamide, 3~5 parts of sulfamic acids, 6~10 parts of limit dextrins are dispersed with stirring, are warming up to 80 DEG C~110 DEG C, and reaction 1~3 is small
When, sodium hydroxide solution is neutralized to pH=8~10, and ethyl alcohol alcohol precipitation, centrifugation recycling sediment, 30~40 DEG C are dried to obtain water
Soluble starch sulfuric ester high molecular polymer；
Second step：Tap water is injected in reaction kettle, adds in water soluble starch sulfuric ester high molecular polymerization while stirring in sequence
Object：30%th, polyalcohol amine：10%th, acetic acid：6%th, water：58.98%th, molasses：6%, sodium lignin sulfonate：6%, sodium acetate：6%, the third three
Alcohol：2%, careful stirring 15 minutes until water soluble starch sulfuric ester high molecular polymer all dissolves, obtains liquid grinding aid
（Temperature setting is 30~70 DEG C at this time）, then just by the liquid grinding aid and emulsifier that dissolve：0.02% adds in emulsifier together
Emulsion dispersion is carried out, obtains cement grinding aid.
Embodiment two：Water soluble starch sulfuric ester high molecular polymer：32%th, polyalcohol amine：11%th, acetic acid：7%th, it emulsifies
Agent：0.03%th, water：59.98%th, molasses：8%, sodium lignin sulfonate：7%, sodium acetate：7%, glycerine：3%, polyalcohol amine polymeric alcohol
Amine is the high-molecular compound formed by the organic compound for containing polynary amino, multi-hydroxy and carboxyl through graft polymerization, newborn
Agent is polyglycol ether for polyethers, can be as emulsifier, such as using other polymers：Sorbitan monooleate（Hard acid
Ester）, glycerol fatty acid ester, alkyl phenol polyoxyethylene ether, OP~10 etc..
The present invention also provides a kind of preparation methods of cement grinding aid：Include the following steps：
The first step：The preparation method of water-soluble water soluble starch sulfuric ester high molecular polymer grinding aid, includes the following steps：
1）The three-necked flask equipped with mechanical agitator, thermometer and reflux condensing tube is taken, adds in 1.5~3.5 part of 95% ethyl alcohol conduct
Dispersant is adding in 1~2 part of starch（Cereals or potato starch）, 0.05~0.08 part of catalyst（Catalyst is hydrochloric acid),
It is dispersed with stirring uniformly, is warming up to 50~70 DEG C of beginning timing, reacts 8~12 hours, water washing 6~8 times, filter to obtain limit paste
Essence；
2）In the three-necked flask equipped with mechanical agitator, thermometer and reflux condensing tube, 12~20 parts of N, N~dimethyl are first added in
Formamide, 3~5 parts of sulfamic acids, 6~10 parts of limit dextrins are dispersed with stirring, are warming up to 80 DEG C~110 DEG C, and reaction 1~3 is small
When, sodium hydroxide solution is neutralized to pH=8~10, and ethyl alcohol alcohol precipitation, centrifugation recycling sediment, 30~40 DEG C are dried to obtain water
Soluble starch sulfuric ester high molecular polymer；
Second step：Tap water is injected in reaction kettle, adds in water soluble starch sulfuric ester high molecular polymerization while stirring in sequence
Object：32%th, polyalcohol amine：11%th, acetic acid：7%th, water：59.98%th, molasses：8%, sodium lignin sulfonate：7%, sodium acetate：7%, the third three
Alcohol：3%, sodium acetate：6%, glycerine：2%, careful stirring 15 minutes, until water soluble starch sulfuric ester high molecular polymer is whole
Dissolving, obtains liquid grinding aid（Temperature setting is 30~70 DEG C at this time）, then just by the liquid grinding aid and emulsifier that dissolve：
0.03% adds in emulsifier together carries out emulsion dispersion, obtains cement grinding aid.
Embodiment three：Water soluble starch sulfuric ester high molecular polymer：35%th, polyalcohol amine：15%th, acetic acid：7%th, it emulsifies
Agent：0.04%th, water：60.98%th, molasses：10%, sodium lignin sulfonate：7%, sodium acetate：7%, glycerine：3%, polyalcohol amine polymerization
Hydramine is the high-molecular compound formed by the organic compound for containing polynary amino, multi-hydroxy and carboxyl through graft polymerization,
Emulsifier is polyglycol ether for polyethers, can be as emulsifier, such as using other polymers：Sorbitan monooleate（Firmly
Acid esters）, glycerol fatty acid ester, alkyl phenol polyoxyethylene ether, OP~10 etc..
The present invention also provides a kind of preparation methods of cement grinding aid：Include the following steps：
The first step：The preparation method of water-soluble water soluble starch sulfuric ester high molecular polymer grinding aid, includes the following steps：
1）The three-necked flask equipped with mechanical agitator, thermometer and reflux condensing tube is taken, adds in 1.5~3.5 part of 95% ethyl alcohol conduct
Dispersant is adding in 1~2 part of starch（Cereals or potato starch）, 0.05~0.08 part of catalyst（Catalyst is hydrochloric acid),
It is dispersed with stirring uniformly, is warming up to 50~70 DEG C of beginning timing, reacts 8~12 hours, water washing 6~8 times, filter to obtain limit paste
Essence；
2）In the three-necked flask equipped with mechanical agitator, thermometer and reflux condensing tube, 12~20 parts of N, N~dimethyl are first added in
Formamide, 3~5 parts of sulfamic acids, 6~10 parts of limit dextrins are dispersed with stirring, are warming up to 80 DEG C~110 DEG C, and reaction 1~3 is small
When, sodium hydroxide solution is neutralized to pH=8~10, and ethyl alcohol alcohol precipitation, centrifugation recycling sediment, 30~40 DEG C are dried to obtain water
Soluble starch sulfuric ester high molecular polymer；
Second step：Tap water is injected in reaction kettle, adds in water soluble starch sulfuric ester high molecular polymerization while stirring in sequence
Object：35%th, polyalcohol amine：15%th, acetic acid：7%th, water：60.98%th, molasses：10%, sodium lignin sulfonate：7%, sodium acetate：7%, the third three
Alcohol：3%, careful stirring 15 minutes until water soluble starch sulfuric ester high molecular polymer all dissolves, obtains liquid grinding aid
（Temperature setting is 30~70 DEG C at this time）, then just by the liquid grinding aid and emulsifier that dissolve：0.04% adds in emulsifier together
Emulsion dispersion is carried out, obtains cement grinding aid.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of cement grinding aid, it is characterised in that：Comprising following components and it is calculated in mass percent calculation：Water soluble starch sulfuric acid
Ester high molecular polymer：30%~40%, polyalcohol amine：10%~20%, acetic acid：5%~10%, emulsifier：0.01%~0.05%, sugar
Honey 5%~20%, sodium lignin sulfonate 5%~10%, sodium acetate 5~10%, glycerine 1~5%.
2. a kind of cement grinding aid according to claim 1, it is characterised in that：The polyalcohol amine polyalcohol amine is by containing
The high-molecular compound that the organic compound for having polynary amino, multi-hydroxy and carboxyl is formed through graft polymerization.
3. a kind of cement grinding aid according to claim 1, it is characterised in that：The emulsifier is polyethylene glycol for polyethers
Ether, can be as emulsifier, such as using other polymers：Sorbitan monooleate（Hard acid ester）, glycerol fatty acid ester, alkane
Base phenol polyethenoxy ether, OP~10 etc..
4. a kind of preparation method of cement grinding aid, it is characterised in that：Include the following steps：
The first step：The preparation method of water soluble starch sulfuric ester grinding aid, it is characterised in that：Include the following steps：
1）The three-necked flask equipped with mechanical agitator, thermometer and reflux condensing tube is taken, adds in 1.5~3.5 part of 95% ethyl alcohol conduct
Dispersant is adding in 1~2 part of starch（Cereals or potato starch）, 0.05~0.08 part of catalyst（Catalyst is hydrochloric acid),
It is dispersed with stirring uniformly, is warming up to 50~70 DEG C of beginning timing, reacts 8~12 hours, water washing 6~8 times, filter to obtain limit paste
Essence；
2）In the three-necked flask equipped with mechanical agitator, thermometer and reflux condensing tube, 12~20 parts of N, N~dimethyl are first added in
Formamide, 3~5 parts of sulfamic acids, 6~10 parts of limit dextrins are dispersed with stirring, are warming up to 80 DEG C~110 DEG C, and reaction 1~3 is small
When, sodium hydroxide solution is neutralized to pH=8~10, and ethyl alcohol alcohol precipitation, centrifugation recycling sediment, 30~40 DEG C are dried to obtain shallow lake
Powder sulfuric ester；
Second step：Tap water is injected in reaction kettle, adds in water soluble starch sulfuric ester high molecular polymerization while stirring in sequence
Object：30%~40%, polyalcohol amine：10%~20%, acetic acid：5%~10%, molasses 5%~20%, sodium lignin sulfonate 5%~10%, vinegar
Sour sodium 5~10%, glycerine 1~5%, careful stirring 15 minutes until starch sulphate all dissolves, obtain liquid grinding aid
（Temperature setting is 30~70 DEG C at this time）, then just by the liquid grinding aid and emulsifier that dissolve：0.01%~0.05% adds together
Enter emulsifier and carry out emulsion dispersion, obtain cement grinding aid.
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Cited By (3)
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| CN109180055A (en) * | 2018-10-15 | 2019-01-11 | 山东鑫圭新材料科技有限公司 | A kind of polyether polyhydroxy tertiary amine cement grinding aid and preparation method thereof |
| CN110563374A (en) * | 2019-09-03 | 2019-12-13 | 湖南中岩建材科技有限公司 | Raw material grinding aid for vertical mill and preparation method thereof |
| CN111439949A (en) * | 2020-03-26 | 2020-07-24 | 天津市飞龙砼外加剂有限公司 | Efficient cement grinding aid and preparation method thereof |
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| CN111439949A (en) * | 2020-03-26 | 2020-07-24 | 天津市飞龙砼外加剂有限公司 | Efficient cement grinding aid and preparation method thereof |
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