CN108328960A - A kind of concrete poly carboxylic acid series water reducer and preparation method thereof - Google Patents
A kind of concrete poly carboxylic acid series water reducer and preparation method thereof Download PDFInfo
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- CN108328960A CN108328960A CN201810242307.0A CN201810242307A CN108328960A CN 108328960 A CN108328960 A CN 108328960A CN 201810242307 A CN201810242307 A CN 201810242307A CN 108328960 A CN108328960 A CN 108328960A
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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
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
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Abstract
The invention discloses a kind of concrete poly carboxylic acid series water reducers, belong to technical field of concrete additives.The water-reducing agent includes following raw material：Methyl alkenyl polyoxyethylene ether, methoxy polyethylene glycol methacrylate-styrene polymer, fumaric acid, acrylic acid, methallylsulfonic acid sodium, mercaptoethanol, potassium persulfate, azodiisobutyronitrile, polyethylene glycol odium stearate, sodium abietate, phenol.The reinforcement system that the present invention is constituted using polyethylene glycol odium stearate, sodium abietate, phenol, collaboration improve the slump, water-reducing rate and the compression strength of concrete.
Description
Technical field
The invention belongs to technical field of concrete additives, and in particular to a kind of concrete poly carboxylic acid series water reducer and its
Preparation method.
Background technology
Two aspects can be divided into the explanation of cement water reducing agent, first, being protected in concrete easy act, cement consumption
It keeps steady under conditions of determining, mix water consumption can be reduced after addition, while improving the intensity of concrete；Second is that easily being applied in concrete
Under the premise of work and intensity are identical, the dosage of cement can be saved after incorporation.In practical concrete whipping process, concrete
Water-reducing agent effect is prominent and becomes indispensable, and cement water reducing agent can be used alone, can also be with other functional components
It is used after being combined with each other.《Concrete admixture》In standard (GB 8076-2008), according to the difference of water-reducing rate, water-reducing agent
It can be divided into three categories：Ordinary water-reducing agent (using lignin sulfonate as representative), high efficiency water reducing agent (including naphthalene system, amino sulphur
Phosphate-gallate series, melamine system, fatty family etc.) and poly carboxylic acid series water reducer be representative high-performance water reducing agent.
Last century the mid-80, Japan develops polycarboxylate water-reducer and it is made to be applied for the first time.Earliest a batch
Product mainly under the action of air entraining agent, by unsaturated monomer, is made up of graft polymerization reaction.Poly- shuttle acid based water reducer is complete
The full ordinary water-reducing agent for being different from early period, even if the former can also be such that the concrete of preparation has relatively low in low dosage
Viscosity, and keep the preferable slump, application value is relatively high.It is special that the advantage of high performance water reducing agent of polyocarboxy acid depends on it
Fixed molecular structure, containing comb polymer molecule structure, in this structure, the main chain containing active group is shorter, and side chain is close
Aqueous group it is longer and have it is more, it is shorter and less simultaneous with hydrophobic grouping side chain.Since its molecule shows These characteristics,
After this kind of water-reducing agent is added, concrete shows plurality of advantages.But this special molecular structure also makes such water-reducing agent exist
It is higher to cement, sand, stone susceptibility during use, show in practical engineering application to be exactly when being used for ready-mixed concrete, to subtract
Aqua adaptability is very poor.
A kind of Chinese patent literature " high performance water reducing agent of polyocarboxy acid and preparation method thereof (patent No.：ZL
201210274917.1) " a kind of high performance water reducing agent of polyocarboxy acid is disclosed, the water-reducing agent chooses following raw material：Methyl alkene
Base polyoxyethylene ether 200.0g, methoxy polyethylene glycol methacrylate-styrene polymer 100g, fumaric acid 34.58g, acrylic acid 12.5g, first
Base sodium allylsulfonate 3.5g, 3- mercaptopropionic acid 1.2g, L-AA 0.96g, potassium persulfate and hydrogen peroxide 8.8g.The invention
With feature at low cost, environmentally safe, but it there is a problem that the slump, water-reducing rate and compression strength is not high.
Invention content
The object of the present invention is to provide a kind of concrete poly carboxylic acid series water reducers and preparation method thereof, to solve in China
A kind of patent document " high performance water reducing agent of polyocarboxy acid and preparation method thereof (patent No.：ZL 201210274917.1) " it is disclosed
On the basis of the problem of how optimizing component, dosage, preparation method etc., improving the slump, water-reducing rate and the compression strength of concrete.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of concrete poly carboxylic acid series water reducer, including following raw material：Methyl alkenyl polyoxyethylene ether, the poly- second of methoxyl group
Glycol methacrylate, fumaric acid, acrylic acid, methallylsulfonic acid sodium, 3- mercaptopropionic acids, mercaptoethanol, peroxy-disulfuric acid
Potassium, azodiisobutyronitrile, polyethylene glycol odium stearate, sodium abietate, phenol；
The polyethylene glycol odium stearate, sodium abietate, phenol weight ratio be (1.2-1.6)：(0.8-1.4)：
(0.5-1.2)。
Preferably, the polyethylene glycol odium stearate, sodium abietate, phenol weight ratio be 1.5：1：0.8.
Preferably, the concrete poly carboxylic acid series water reducer is as unit of parts by weight, including following raw material：Methyl alkenyl
45-60 parts of polyoxyethylene ether, 32-41 parts of methoxy polyethylene glycol methacrylate-styrene polymer, 20-25 parts of fumaric acid, acrylic acid 12-18
Part, 22-28 parts of methallylsulfonic acid sodium, 1.3-1.6 parts of mercaptoethanol, 2.5-4.6 parts of potassium persulfate, azodiisobutyronitrile
3.2-3.8 parts, 1.2-1.6 parts of polyethylene glycol odium stearate, 0.8-1.4 parts of sodium abietate, 0.5-1.2 parts of phenol.
The present invention also provides a kind of preparation methods of concrete poly carboxylic acid series water reducer, include the following steps：
S1：Sodium abietate and phenol are taken in proportion, and sodium hydroxide is added and is uniformly mixed, adjusting pH value is 8.5-10, in 80-
1-2h is reacted at 90 DEG C, initiator solution is made；
S2：Fumaric acid, acrylic acid, polyethylene glycol odium stearate, methallylsulfonic acid sodium and mercaptoethanol are dissolved in
Unsaturated carboxylic acid mother liquid of sodium is made in deionized water；
S3：In the glass equipped with thermometer, blender, peristaltic pump dropwise addition equipment, nitrogen ingress pipe and the cooling device that flows back
In reaction unit, deionized water is added and is heated to 55-60 DEG C, then presses raw material proportioning and put into methyl alkenyl polyoxyethylene
Ether, methoxy polyethylene glycol methacrylate-styrene polymer stir and heat to 70-80 DEG C to whole dissolvings, be then added two
Potassium sulfate, azodiisobutyronitrile stirring, react 2-4h；
S4：Solution made from step S1, S2, S3 is mixed, 20-30min is stirred at 80-90 DEG C, after placing 1-2h, is added
Enter sodium hydroxide solution be neutralized to pH value be 6.5-7.0, finally plus deionized water be made concrete poly carboxylic acid series water reducer at
Product.
Preferably, in the step S1 and S4 sodium hydroxide a concentration of 20-40%.
Preferably, solution temperature is 60-80 DEG C in the step S2.
Preferably, the reaction time is 2.5h in the step S3.
Preferably, the solid content of concrete poly carboxylic acid series water reducer is 35%-40% in the step S4.
The invention has the advantages that：
(1) by the data of embodiment 1-3 and comparative example 5 as it can be seen that using concrete polycarboxylic-acid made from embodiment 1-3
The slump, water-reducing rate and the compression strength of the concrete of water-reducing agent are significantly better than the coagulation using water-reducing agent made from comparative example 5
The slump, water-reducing rate and the compression strength of soil；Simultaneously by the data of embodiment 1-3 as it can be seen that embodiment 1 is optimum embodiment.
(2) by embodiment 1 and the data of comparative example 1-4 as it can be seen that polyethylene glycol odium stearate, sodium abietate, phenol are being made
Standby concrete is cooperateed with the slump for improving concrete, water-reducing rate and is resisted with synergistic effect is played in poly carboxylic acid series water reducer
Compressive Strength；This is：
The main functional group that the blood coagulation enhancing effect of polycarboxylate water-reducer contains with it has much relations, such as carboxyl and hydrochlorate,
Containing-COOH ,-OH ,-R in polyethylene glycol odium stearate, dissociation constant is larger, stronger to the blood coagulation enhancing effect of water-reducing agent, to
Increase the water-reducing rate of water-reducing agent.Sodium abietate is anion surfactant, can be used as air entraining agent, reduces concrete water amount,
Improve the construction workability of concrete, impervious and frost resistance.In water due to polyethylene glycol odium stearate and polycarboxylic acids mother liquor
Dissolubility is poor, and the present invention adds surfactant sodium abietate so that polyethylene glycol odium stearate using the similar principle that mixes
It is preferably dissolved in polycarboxylic acids mother liquor, and releases Na+Ion, Na+The increase of ion can be such that the zeta potential of particle surface subtracts
It is small, to reduce intermolecular electrostatic repulsion, slump-loss is made to reduce.Contain phenyl ring in phenol, phenyl ring is hydrophobic function
Group, these groups can form certain space steric effect, play preferable dispersibility, can be good at improving concrete
Mobility, so that water-reducing rate increases；The hydroxyl contained in phenol, polyethylene glycol odium stearate, after hydrated cementitious, water
Earth rubber grain adsorption hydroxyl, hydroxyl can form hydrogen bond in cement surface, therefore hydroxyl there is certain slow setting to make cement
With so as to improve the workability of concrete, raising compression strength.
(3) by the data of comparative example 6-8 as it can be seen that polyethylene glycol odium stearate, sodium abietate, phenol weight ratio do not exist
(1.2-1.6)：(0.8-1.4)：When in (0.5-1.2) range, the slump, water-reducing rate and the pressure resistance number of degrees of concrete obtained
Value and the numerical value of embodiment 1-3 are very different, and are much smaller than the numerical value of embodiment 1-3, the numerical value phase with the prior art (comparative example 5)
When.This is because main function is the dissolubility for increasing polyethylene glycol odium stearate, sodium abietate to sodium abietate in the present invention
When dosage is 0.8-1.4 parts, the solubility of polyethylene glycol odium stearate is maximum, when sodium abietate dosage is less than 0.8-1.4 parts, gathers
The dissolving of ethylene glycol odium stearate is incomplete, and sodium abietate dosage is higher than 0.8-1.4 parts, the dissolving of solubility polyethylene glycol odium stearate
Degree not will increase, and cause wastage of material instead.Polyethylene glycol odium stearate of the present invention, sodium abietate, phenol as reinforcement system,
By adding polyethylene glycol odium stearate, the weight ratio of sodium abietate, phenol when embodiment 1-3 controls prepare polycarboxylate water-reducer
For (1.2-1.6)：(0.8-1.4)：(0.5-1.2) is realized and is added sodium abietate using similar compatibility principle in reinforcement system,
The dissolubility for increasing polyethylene glycol odium stearate, passes through the Na of release+Ion reduces intermolecular electrostatic repulsion；Using phenol, gather
The functional groups such as phenyl ring, carboxyl, hydroxyl, alkyl that ethylene glycol odium stearate contains, the features such as influencing the workability of water-reducing agent so that
Concrete poly carboxylic acid series water reducer of the reinforcement system that polyethylene glycol odium stearate, sodium abietate, phenol are constituted in the present invention
In, improve the slump, water-reducing rate and the compression strength of concrete.
Specific implementation mode
For a better understanding of the present invention, it is illustrated using following real-time mode, real-time example belongs to the guarantor of the present invention below
Range is protected, but is not limited the scope of the invention.
The concrete poly carboxylic acid series water reducer, as unit of parts by weight, including following raw material：Methyl alkenyl polyoxy
45-60 parts of vinethene, 32-41 parts of methoxy polyethylene glycol methacrylate-styrene polymer, 20-25 parts of fumaric acid, 12-18 parts of acrylic acid,
22-28 parts of methallylsulfonic acid sodium, 1.3-1.6 parts of mercaptoethanol, 2.5-4.6 parts of potassium persulfate, azodiisobutyronitrile
3.2-3.8 parts, 1.2-1.6 parts of polyethylene glycol odium stearate, 0.8-1.4 parts of sodium abietate, 0.5-1.2 parts of phenol.
The preparation method of the concrete poly carboxylic acid series water reducer, includes the following steps：
S1：Sodium abietate and phenol are taken in proportion, and the sodium hydroxide that a concentration of 20-40% is added is uniformly mixed, and adjusts pH
Value is 8.5-10, reacts 1-2h at 80-90 DEG C, initiator solution is made；
S2：Fumaric acid, acrylic acid, polyethylene glycol odium stearate, methallylsulfonic acid sodium and mercaptoethanol are dissolved in
Unsaturated carboxylic acid mother liquid of sodium is made in deionized water, the solution temperature is 60-80 DEG C；
S3：In the glass equipped with thermometer, blender, peristaltic pump dropwise addition equipment, nitrogen ingress pipe and the cooling device that flows back
In reaction unit, deionized water is added and is heated to 55-60 DEG C, then presses raw material proportioning and put into methyl alkenyl polyoxyethylene
Ether, methoxy polyethylene glycol methacrylate-styrene polymer stir and heat to 70-80 DEG C to whole dissolvings, be then added two
Potassium sulfate, azodiisobutyronitrile stirring, react 2-4h；
S4：Solution made from step S1, S2, S3 is mixed, 20-30min is stirred at 80-90 DEG C, after placing 1-2h, is added
The sodium hydroxide solution for entering a concentration of 20-40% is neutralized to pH value as 6.5-7.0, finally adds deionized water that solid content is made and is
The concrete of 35%-40% poly carboxylic acid series water reducer finished product.
Embodiment 1
A kind of concrete poly carboxylic acid series water reducer, as unit of parts by weight, including following raw material：Methyl alkenyl polyoxy second
45 parts of alkene ether, 41 parts of methoxy polyethylene glycol methacrylate-styrene polymer, 23 parts of fumaric acid, 18 parts of acrylic acid, methallylsulfonic acid
25 parts of sodium, 1.3 parts of mercaptoethanol, 4.6 parts of potassium persulfate, 3.5 parts of azodiisobutyronitrile, 1.5 parts of polyethylene glycol odium stearate,
1 part of sodium abietate, 0.8 part of phenol.
The preparation method of the concrete poly carboxylic acid series water reducer, includes the following steps：
S1：Sodium abietate and phenol, the sodium hydroxide of addition a concentration of 30% is taken to be uniformly mixed in proportion, adjusting pH value is
9,1h is reacted at 90 DEG C, initiator solution is made；
S2：Fumaric acid, acrylic acid, polyethylene glycol odium stearate, methallylsulfonic acid sodium and mercaptoethanol are dissolved in
Unsaturated carboxylic acid mother liquid of sodium is made in deionized water, the solution temperature is 70 DEG C；
S3：In the glass equipped with thermometer, blender, peristaltic pump dropwise addition equipment, nitrogen ingress pipe and the cooling device that flows back
In reaction unit, deionized water is added and is simultaneously heated to 55 DEG C, then press raw material proportioning input methyl alkenyl polyoxyethylene ether,
Methoxy polyethylene glycol methacrylate-styrene polymer stirs and heats to 80 DEG C to whole dissolvings, be then added potassium persulfate,
Azodiisobutyronitrile stirs, and reacts 4h；
S4：Solution made from step S1, S2, S3 is mixed, 30min is stirred at 90 DEG C, after placing 2h, is added a concentration of
It is 6.5 that 30% sodium hydroxide solution, which is neutralized to pH value, and finally plus deionized water is made the concrete that solid content is 35% and uses and gathers
Carboxylic acid water reducing agent finished product.
Embodiment 2
A kind of concrete poly carboxylic acid series water reducer, as unit of parts by weight, including following raw material：Methyl alkenyl polyoxy second
60 parts of alkene ether, 36 parts of methoxy polyethylene glycol methacrylate-styrene polymer, 20 parts of fumaric acid, 15 parts of acrylic acid, methallylsulfonic acid
22-28 parts of sodium, 1.6 parts of mercaptoethanol, 3.5 parts of potassium persulfate, 3.2 parts of azodiisobutyronitrile, polyethylene glycol odium stearate 1.2
Part, 0.8 part of sodium abietate, 0.5 part of phenol.
The preparation method of the concrete poly carboxylic acid series water reducer, includes the following steps：
S1：Sodium abietate and phenol, the sodium hydroxide of addition a concentration of 20% is taken to be uniformly mixed in proportion, adjusting pH value is
8.5,2h is reacted at 85 DEG C, initiator solution is made；
S2：Fumaric acid, acrylic acid, polyethylene glycol odium stearate, methallylsulfonic acid sodium and mercaptoethanol are dissolved in
Unsaturated carboxylic acid mother liquid of sodium is made in deionized water, the solution temperature is 60 DEG C；
S3：In the glass equipped with thermometer, blender, peristaltic pump dropwise addition equipment, nitrogen ingress pipe and the cooling device that flows back
In reaction unit, deionized water is added and is simultaneously heated to 60 DEG C, then press raw material proportioning input methyl alkenyl polyoxyethylene ether,
Methoxy polyethylene glycol methacrylate-styrene polymer stirs and heats to 75 DEG C to whole dissolvings, be then added potassium persulfate,
Azodiisobutyronitrile stirs, and reacts 2.5h；
S4：Solution made from step S1, S2, S3 is mixed, 25min is stirred at 85 DEG C, after placing 1.5h, concentration is added
For 20% sodium hydroxide solution, to be neutralized to pH value be 7.0, and finally plus deionized water is made the concrete that solid content is 40% and uses
Poly carboxylic acid series water reducer finished product.
Embodiment 3
A kind of concrete poly carboxylic acid series water reducer, as unit of parts by weight, including following raw material：Methyl alkenyl polyoxy second
50 parts of alkene ether, 32 parts of methoxy polyethylene glycol methacrylate-styrene polymer, 25 parts of fumaric acid, 12 parts of acrylic acid, methallylsulfonic acid
28 parts of sodium, 1.5 parts of mercaptoethanol, 2.5 parts of potassium persulfate, 3.8 parts of azodiisobutyronitrile, 1.6 parts of polyethylene glycol odium stearate,
1.4 parts of sodium abietate, 1.2 parts of phenol.
The preparation method of the concrete poly carboxylic acid series water reducer, includes the following steps：
S1：Sodium abietate and phenol, the sodium hydroxide of addition a concentration of 40% is taken to be uniformly mixed in proportion, adjusting pH value is
10,1.5h is reacted at 80 DEG C, initiator solution is made；
S2：Fumaric acid, acrylic acid, polyethylene glycol odium stearate, methallylsulfonic acid sodium and mercaptoethanol are dissolved in
Unsaturated carboxylic acid mother liquid of sodium is made in deionized water, the solution temperature is 80 DEG C；
S3：In the glass equipped with thermometer, blender, peristaltic pump dropwise addition equipment, nitrogen ingress pipe and the cooling device that flows back
In reaction unit, deionized water is added and is simultaneously heated to 58 DEG C, then press raw material proportioning input methyl alkenyl polyoxyethylene ether,
Methoxy polyethylene glycol methacrylate-styrene polymer stirs and heats to 70 DEG C to whole dissolvings, be then added potassium persulfate,
Azodiisobutyronitrile stirs, and reacts 2h；
S4：Solution made from step S1, S2, S3 is mixed, 20min is stirred at 80 DEG C, after placing 1h, is added a concentration of
It is 6.8 that 40% sodium hydroxide solution, which is neutralized to pH value, and finally plus deionized water is made the concrete that solid content is 38% and uses and gathers
Carboxylic acid water reducing agent finished product.
Comparative example 1
It is essentially identical with the preparation method of embodiment 1, the difference is that preparing concrete poly carboxylic acid series water reducer
Lack polyethylene glycol odium stearate, sodium abietate, phenol in raw material.
Comparative example 2
It is essentially identical with the preparation method of embodiment 1, the difference is that preparing concrete poly carboxylic acid series water reducer
Lack polyethylene glycol odium stearate in raw material.
Comparative example 3
It is essentially identical with the preparation method of embodiment 1, the difference is that preparing concrete poly carboxylic acid series water reducer
Lack sodium abietate in raw material.
Comparative example 4
It is essentially identical with the preparation method of embodiment 1, the difference is that preparing concrete poly carboxylic acid series water reducer
Lack phenol in raw material.
Comparative example 5
Using a kind of Chinese patent literature " high performance water reducing agent of polyocarboxy acid and preparation method thereof (patent No.：ZL
201210274917.1) " in method described in embodiment 1 prepare water-reducing agent.
Comparative example 6
It is essentially identical with the preparation method of embodiment 1, the difference is that preparing concrete poly carboxylic acid series water reducer
Polyethylene glycol odium stearate is 4.2 parts in raw material, sodium abietate is 0.2 part, phenol is 3.5 parts.
Comparative example 7
It is essentially identical with the preparation method of embodiment 1, the difference is that preparing concrete poly carboxylic acid series water reducer
Polyethylene glycol odium stearate is 0.4 part in raw material, sodium abietate is 4.2 parts, phenol is 0.1 part.
Comparative example 8
It is essentially identical with the preparation method of embodiment 1, the difference is that preparing concrete poly carboxylic acid series water reducer
Polyethylene glycol odium stearate is 5.3 parts in raw material, sodium abietate is 4.2 parts, phenol is 0.2 part.
Foundation《Concrete admixture》For every chemical property in additive in national standard (GB 8076-2008)
Index provides, tests product made from embodiment 1-3 and comparative example 1-8, using ordinary cement, is separately added into embodiment
Water-reducing agent made from 1-3 and comparative example 1-8, is compared the slump of concrete, water-reducing rate and compression strength, as a result as follows
Shown in table.
As seen from the above table：(1) by the data of embodiment 1-3 and comparative example 5 as it can be seen that using coagulation made from embodiment 1-3
The slump, water-reducing rate and the compression strength of the concrete of soil poly carboxylic acid series water reducer are significantly better than using made from comparative example 5
The slump, water-reducing rate and the compression strength of the concrete of water-reducing agent；Simultaneously by the data of embodiment 1-3 as it can be seen that embodiment 1 is most
Excellent embodiment.
(2) by embodiment 1 and the data of comparative example 1-4 as it can be seen that polyethylene glycol odium stearate, sodium abietate, phenol are being made
Standby concrete is cooperateed with the slump for improving concrete, water-reducing rate and is resisted with synergistic effect is played in poly carboxylic acid series water reducer
Compressive Strength；This is：
The main functional group that the blood coagulation enhancing effect of polycarboxylate water-reducer contains with it has much relations, such as carboxyl and hydrochlorate,
Containing-COOH ,-OH ,-R in polyethylene glycol odium stearate, dissociation constant is larger, stronger to the blood coagulation enhancing effect of water-reducing agent, to
Increase the water-reducing rate of water-reducing agent.Sodium abietate is anion surfactant, can be used as air entraining agent, reduces concrete water amount,
Improve the construction workability of concrete, impervious and frost resistance.In water due to polyethylene glycol odium stearate and polycarboxylic acids mother liquor
Dissolubility is poor, and the present invention adds surfactant sodium abietate so that polyethylene glycol odium stearate using the similar principle that mixes
It is preferably dissolved in polycarboxylic acids mother liquor, and releases Na+Ion, Na+The increase of ion can be such that the zeta potential of particle surface subtracts
It is small, to reduce intermolecular electrostatic repulsion, slump-loss is made to reduce.Contain phenyl ring in phenol, phenyl ring is hydrophobic function
Group, these groups can form certain space steric effect, play preferable dispersibility, can be good at improving concrete
Mobility, so that water-reducing rate increases；The hydroxyl contained in phenol, polyethylene glycol odium stearate, after hydrated cementitious, water
Earth rubber grain adsorption hydroxyl, hydroxyl can form hydrogen bond in cement surface, therefore hydroxyl there is certain slow setting to make cement
With so as to improve the workability of concrete, raising compression strength.
(4) by the data of comparative example 6-8 as it can be seen that polyethylene glycol odium stearate, sodium abietate, phenol weight ratio do not exist
(1.2-1.6)：(0.8-1.4)：When in (0.5-1.2) range, the slump, water-reducing rate and the pressure resistance number of degrees of concrete obtained
Value and the numerical value of embodiment 1-3 are very different, and are much smaller than the numerical value of embodiment 1-3, the numerical value phase with the prior art (comparative example 5)
When.This is because main function is the dissolubility for increasing polyethylene glycol odium stearate, sodium abietate to sodium abietate in the present invention
When dosage is 0.8-1.4 parts, the solubility of polyethylene glycol odium stearate is maximum, when sodium abietate dosage is less than 0.8-1.4 parts, gathers
The dissolving of ethylene glycol odium stearate is incomplete, and sodium abietate dosage is higher than 0.8-1.4 parts, the dissolving of solubility polyethylene glycol odium stearate
Degree not will increase, and cause wastage of material instead.Polyethylene glycol odium stearate of the present invention, sodium abietate, phenol as reinforcement system,
By adding polyethylene glycol odium stearate, the weight ratio of sodium abietate, phenol when embodiment 1-3 controls prepare polycarboxylate water-reducer
For (1.2-1.6)：(0.8-1.4)：(0.5-1.2) is realized and is added sodium abietate using similar compatibility principle in reinforcement system,
The dissolubility for increasing polyethylene glycol odium stearate, passes through the Na of release+Ion reduces intermolecular electrostatic repulsion；Using phenol, gather
The functional groups such as phenyl ring, carboxyl, hydroxyl, alkyl that ethylene glycol odium stearate contains, the features such as influencing the workability of water-reducing agent so that
Concrete poly carboxylic acid series water reducer of the reinforcement system that polyethylene glycol odium stearate, sodium abietate, phenol are constituted in the present invention
In, improve the slump, water-reducing rate and the compression strength of concrete.
The above content is it cannot be assumed that present invention specific implementation is confined to these explanations, for the technical field of the invention
Those of ordinary skill for, under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all answers
When being considered as belonging to present invention scope of patent protection determined by the appended claims.
Claims (8)
1. a kind of concrete poly carboxylic acid series water reducer, which is characterized in that including following raw material：Methyl alkenyl polyoxyethylene ether,
Methoxy polyethylene glycol methacrylate-styrene polymer, fumaric acid, acrylic acid, methallylsulfonic acid sodium, mercaptoethanol, peroxy-disulfuric acid
Potassium, azodiisobutyronitrile, polyethylene glycol odium stearate, sodium abietate, phenol；
The polyethylene glycol odium stearate, sodium abietate, phenol weight ratio be (1.2-1.6)：(0.8-1.4)：(0.5-
1.2)。
2. concrete poly carboxylic acid series water reducer according to claim 1, which is characterized in that the polyethylene glycol stearic acid
Sodium, sodium abietate, phenol weight ratio be 1.5：1：0.8.
3. concrete poly carboxylic acid series water reducer according to claim 1, which is characterized in that as unit of parts by weight, packet
Include following raw material：45-60 parts of methyl alkenyl polyoxyethylene ether, 32-41 parts of methoxy polyethylene glycol methacrylate-styrene polymer, fumaric acid
20-25 parts, 12-18 parts of acrylic acid, 22-28 parts of methallylsulfonic acid sodium, 1.3-1.6 parts of mercaptoethanol, potassium persulfate
2.5-4.6 parts, 3.2-3.8 parts of azodiisobutyronitrile, 1.2-1.6 parts of polyethylene glycol odium stearate, 0.8-1.4 parts of sodium abietate,
0.5-1.2 parts of phenol.
4. a kind of preparation method according to claim 1-3 any one of them concrete poly carboxylic acid series water reducers, feature
It is, includes the following steps：
S1：Sodium abietate and phenol are taken in proportion, and sodium hydroxide is added and is uniformly mixed, adjusting pH value is 8.5-10, at 80-90 DEG C
Lower reaction 1-2h, is made initiator solution；
S2：By fumaric acid, acrylic acid, polyethylene glycol odium stearate, methallylsulfonic acid sodium and mercaptoethanol be dissolved in from
Unsaturated carboxylic acid mother liquid of sodium is made in sub- water；
S3：In the glass reaction that equipment, nitrogen ingress pipe and the cooling device that flows back are added dropwise equipped with thermometer, blender, peristaltic pump
In device, deionized water is added and is simultaneously heated to 55-60 DEG C, then press raw material proportioning input methyl alkenyl polyoxyethylene ether,
Methoxy polyethylene glycol methacrylate-styrene polymer stirs and heats to 70-80 DEG C to whole dissolvings, peroxy-disulfuric acid is then added
Potassium, azodiisobutyronitrile stirring, react 2-4h；
S4：Solution made from step S1, S2, S3 is mixed, 20-30min is stirred at 80-90 DEG C, after placing 1-2h, hydrogen is added
It is 6.5-7.0 that sodium hydroxide solution, which is neutralized to pH value, and finally plus concrete poly carboxylic acid series water reducer finished product is made in deionized water.
5. the preparation method of concrete poly carboxylic acid series water reducer according to claim 4, which is characterized in that the step
A concentration of 20-40% of sodium hydroxide in S1 and S4.
6. the preparation method of concrete poly carboxylic acid series water reducer according to claim 4, which is characterized in that the step
Solution temperature is 60-80 DEG C in S2.
7. the preparation method of concrete poly carboxylic acid series water reducer according to claim 4, which is characterized in that the step
The reaction time is 2.5h in S3.
8. the preparation method of concrete poly carboxylic acid series water reducer according to claim 4, which is characterized in that the step
The solid content of concrete poly carboxylic acid series water reducer is 35%-40% in S4.
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