CN103803840A - Application of hyper-branched polymer to concrete shrinkage reducing agent - Google Patents
Application of hyper-branched polymer to concrete shrinkage reducing agent Download PDFInfo
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- CN103803840A CN103803840A CN201410038987.6A CN201410038987A CN103803840A CN 103803840 A CN103803840 A CN 103803840A CN 201410038987 A CN201410038987 A CN 201410038987A CN 103803840 A CN103803840 A CN 103803840A
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- 229920000642 polymer Polymers 0.000 title abstract description 14
- 239000003638 chemical reducing agent Substances 0.000 title abstract description 6
- 229920000587 hyperbranched polymer Polymers 0.000 claims description 45
- 239000003795 chemical substances by application Substances 0.000 claims description 34
- 238000006243 chemical reaction Methods 0.000 claims description 33
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 21
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 21
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 13
- 239000000178 monomer Substances 0.000 claims description 12
- 229920001477 hydrophilic polymer Polymers 0.000 claims description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 10
- 229920013701 VORANOL™ Polymers 0.000 claims description 8
- 229920000151 polyglycol Polymers 0.000 claims description 4
- 239000010695 polyglycol Substances 0.000 claims description 4
- 239000012467 final product Substances 0.000 claims description 2
- 230000001603 reducing effect Effects 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 abstract 1
- 239000002202 Polyethylene glycol Chemical group 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 125000003827 glycol group Chemical group 0.000 abstract 1
- 229920001223 polyethylene glycol Chemical group 0.000 abstract 1
- -1 polyoxyethylene Polymers 0.000 abstract 1
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 33
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 229960000549 4-dimethylaminophenol Drugs 0.000 description 6
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 6
- 238000009835 boiling Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 238000004821 distillation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 238000003760 magnetic stirring Methods 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000010992 reflux Methods 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 150000002170 ethers Chemical group 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000002085 irritant Substances 0.000 description 1
- 231100000021 irritant Toxicity 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012384 transportation and delivery Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Abstract
The invention relates to the field of concrete additives, and in particular relates to application of a hyper-branched polymer to a concrete shrinkage reducing agent. The hyper-branched concrete reducing agent is synthesized by synthesizing a hydroxyl-terminated hyper-branched polymer and introducing a polyoxyethylene alkyl or polyethylene glycol chain segment into the tail end of the hyper-branched polymer. When the hyper-branched concrete reducing agent is applied to the field of concrete shrinkage reduction, a very good shrinkage reducing effect is achieved. The concrete shrinkage reducing agent has the advantages of small influence on concrete strength, small doping amount, low cost, easiness and convenience in synthesis, easiness in industrialization and superior performance.
Description
technical field
The present invention relates to technical field of concrete additives, the particularly application of a kind of hyperbranched polymer in economization agent for concrete.
background technology
Concrete is the material of construction of consumption maximum in Contemporary Architecture engineering, and it has the irreplaceable feature of many other materials, as high in ultimate compression strength, easy construction, the advantage such as material source is wide, cheap.Easily shrink and produce crack but cement concrete is inner under drying conditions, cause concrete weather resistance deficiency, this directly affects again the work-ing life of concrete construction.It is almost impossible in engineering, will avoiding crack completely, although concrete shrinkage amplitude is little, but concrete carbonization speed can be accelerated in crack, but also for empty G&W infiltration provides passage, thereby a series of endurance issues such as concrete frost heave and steel bar corrosion caused.Concrete early crack also directly has influence on bearing capacity, the rigidity in concrete member later stage, make it normally to use, and the later stage mends a split and needs a large amount of human and material resources and financial resources, thereby control defects of concrete structure, reduce concrete shrinkage crack significant.
In concrete use procedure, add economization agent and be and control one of the most effective approach of concrete shrinkage and crack, its action effect is not affected by construction and maintenance condition, can act on underground structure and superstructure, easy construction.In concrete, the surface tension of water capillaceous produces kapillary convergent force, causes the upper concrete drying shrinkage of macroscopic view and self-constriction, produces crack.Mainly by reducing, the surface tension of water realizes in the effect of reducing of economization agent.So economization agent for concrete is all surfactant substantially, some economization agents or tensio-active agent.
The economization agent using at present mainly contains alcohols, comprises glycol, triol and homologue thereof, and this type of boiling point substance is lower, volatile, inflammable, uses inconvenience in engineering reality, and the alcohol volume that molecular weight is large is large, and cost is high; The another kind of material for economization agent for concrete is ethers, mainly contains glycol ether, polyoxyethylene ether, Voranol EP 2001 etc., this class material is better than alcohols on Reduce shrinkage effect, but most of ether is volatile, irritant smell, has harm to operator ' s health; Alkanol amine substance also has good Reduce shrinkage effect, but expensive, is difficult to promote in engineering.Economization agent can reduce concrete intensity simultaneously, and this brings certain influence also to the popularization of economization agent.
Hyperbranched polymer has comparatively complete Crown Structure, space structure presents spherical, surface is with a large amount of active function groups, its special structure has been given its a lot of premium propertiess, and hyperbranched polymer all shows huge using value at numerous areas such as material of construction, nanosecond science and technology, biomaterial, photoelectric material, medicine deliveries at present.
summary of the invention
The object of the invention mainly designs synthetic a kind of wide adaptability, and volume is low, and cost is little, and decrement is high, the hyperbranched polymer that can be used as economization agent for concrete of nontoxic pollution-free, and it is less on concrete strength impact simultaneously, excellent property.
The present invention can be for the hyperbranched polymer of economization agent for concrete, there is 3 D stereo reticulated structure, viscosity is low, make it in concrete, there is good dispersiveness, a large amount of ends reduce group makes it in concrete, have good Reduce shrinkage effect, and this hyperbranched polymer and other concrete admixture suitabilities good, this economization agent is non-ionic surface-active substance, insensitive to soda acid, applied widely.
The present invention is achieved by the following measures:
The application of hyperbranched polymer in economization agent for concrete, is characterized in that described hyperbranched polymer props up chain end and contains
(hereinafter to be referred as R yl).
Preferably 2≤n≤5 or n > 10.
Preferably hyperbranched polymer is concrete quality as economization agent for concrete addition content 0.5 ~ 2%.
Preferably hyperbranched polymer obtains by following steps:
1. Succinic anhydried is reacted to the hydrophilic polymer that generates end carboxyl with Voranol EP 2001 or polyglycol ether;
2. in Hyperbranched Polymer with Terminal Hydroxyl, add the hydrophilic polymer reaction of holding carboxyl, to obtain final product.
Preferred described Voranol EP 2001 molecular formula is CH
3o (C
2h
4o)
nh, wherein 2≤n≤5 or n > 10.
Preferred described Hyperbranched Polymer with Terminal Hydroxyl obtains by following steps:
1. Succinic anhydried and diethanolamine are according to the synthetic AB of mol ratio 1:1
2monomer;
2. core molecule and AB
2monomer obtains Hyperbranched Polymer with Terminal Hydroxyl according to 1:3-45 molar ratio reaction.
The core molecule of preferably synthetic Hyperbranched Polymer with Terminal Hydroxyl is 1:6 ~ 48 with the mol ratio of the hydrophilic polymer of end carboxyl.
Preferably core molecule and AB
2monomer mole ratio is 1:3,1:9,1:21 or 1:45, obtain respectively first-generation Hyperbranched Polymer with Terminal Hydroxyl, s-generation Hyperbranched Polymer with Terminal Hydroxyl, third generation Hyperbranched Polymer with Terminal Hydroxyl or the 4th generation Hyperbranched Polymer with Terminal Hydroxyl.
The core molecule of preferably synthetic Hyperbranched Polymer with Terminal Hydroxyl is 1:6 ~ 48 with the mol ratio of the hydrophilic polymer of end carboxyl.
Preferred described Voranol EP 2001 molecular formula is CH
3(OC
2h
4)
3oH, polyglycol ether is MPEG-600 or MPEG-1000.
Below to be elaborated as a kind of synthesis step in the hyperbranched polymer of economization agent for concrete.
1. appropriate Succinic anhydried is dissolved in DMAc, in solution, adds Voranol EP 2001 and catalyzer DMAP, 70 ℃ of reactions 4 hours, generate and contain the hydrophilic polymer of holding carboxyl, reaction equation is as follows:
2. to the hydrophilic polymer that adds the end carboxyl of step in 1. in Hyperbranched Polymer with Terminal Hydroxyl, reaction, obtains modified ultra-branching polymkeric substance;
Hyperbranched Polymer with Terminal Hydroxyl preparation process is as follows:
1) appropriate diethanolamine is dissolved in DMAc, pours in the there-necked flask with magnetic stirring apparatus, Succinic anhydried is dissolved in DMAc, in there-necked flask, drip, stirring reaction certain hour under normal temperature, obtains the AB of a carboxyl and two hydroxyls
2type monomer;
2) in above-mentioned system, make band aqua with toluene, TriMethylolPropane(TMP) is made core molecule, and 120 ℃ of backflows are heated in Catalyzed by p-Toluenesulfonic Acid agent, and point water, after insulation reaction for some time, obtains hyperbranched polymer;
3) in reaction system, drip the hydrophilic polymer that 1. obtained, under Catalyzed by p-Toluenesulfonic Acid, under nitrogen protection, back flow reaction at 120 ℃, point water continues reaction for some time.Reaction finishes to be cooled to 110 ℃ of left and right, and solvent DMAc is removed in underpressure distillation for 1～2 hour, occurs to dripless on condenser, returns to gradually normal pressure, closes vacuum system and obtains the hyperbranched polymer as economization agent for concrete.
Beneficial effect of the present invention:
Hyperbranched polymer as economization agent for concrete of the present invention has good Reduce shrinkage effect, wide adaptability, and volume is low, cost is little, decrement is high, and nontoxic pollution-free is simultaneously less on concrete strength impact, excellent property, can seriously not reduce strength of cement mortar, be a kind of long quality-guarantee period, and building-up process is simple, easy industrialized economization agent for concrete, has good future develop.
embodiment
Below the present invention is described in more detail as the preparation method of the hyperbranched polymer of economization agent, its object is to illustrate design of the present invention and feature, can not limit the scope of the invention with this.All equivalences that spirit is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
example 1
(1) take 30.020g Succinic anhydried, 49.2g(0.3mol) oxyethane methyl alcohol annexation [CH
3(OC
2h
4)
3oH] be dissolved in respectively in appropriate DMAc, then add there-necked flask, in flask, add 0.25g catalyzer DMAP, be warmed up to 70 ℃ of reactions 4 hours, make end carboxyl polymer CH
3(OC
2h
4)
3oOCCH
2cH
2cOOH solution;
(2) take 15.011g Succinic anhydried, 15.770g diethanolamine, first diethanolamine is dissolved in appropriate DMAc, after dissolving, pour in the there-necked flask with magnetic stirring apparatus, again Succinic anhydried is dissolved with appropriate DMAc, then it is slowly added drop-wise in there-necked flask, stir on dropping limit, limit, approximately drips 0.5 hour, normal-temperature reaction 3 hours, obtains AB
2type monomer (0.15mol).In above-mentioned system, first add 60mL toluene (toluene is band aqua), add 6.710g(0.05mol) core molecule TriMethylolPropane(TMP), add 0.33g catalyzer tosic acid, then start heating, until boiling, treating has backflow to produce in spherical condensation tube, after insulation reaction 7 hours, in this system, slowly drip the end carboxyl polymer solution that make (1), approximately drip 2 hours, control temperature of reaction at 90～120 ℃, reflux water-dividing, react 4～6 hours, the solvent in system is removed in then underpressure distillation, obtain end and be the hyperbranched type economization agent for concrete described in i.e. this invention of hyperbranched polymer of R base.
example 2
(1) take 24.017g Succinic anhydried, 39.36g(0.24mol) oxyethane methyl alcohol annexation [CH
3(OC
2h
4)
3oH] be dissolved in respectively in appropriate DMAc, then add there-necked flask, in flask, add 0.20g catalyzer DMAP, be warmed up to 70 ℃ of reactions 4 hours, make end carboxyl polymer CH
3(OC
2h
4)
3oOCCH
2cH
2cOOH solution;
(2) take 18.013g Succinic anhydried, 18.927g diethanolamine, first diethanolamine is dissolved in appropriate DMAc, after dissolving, pour in the there-necked flask with magnetic stirring apparatus, again Succinic anhydried is dissolved with appropriate DMAc, then it is slowly added drop-wise in there-necked flask, stir on dropping limit, limit, approximately drips 0.5 hour, normal-temperature reaction 3 hours, obtains AB
2type monomer (0.18mol).In above-mentioned system, first add 60 mL toluene (toluene is band aqua), add 2.683g(0.02mol) core molecule TriMethylolPropane(TMP), add 0.30 g catalyzer tosic acid, then start heating, until boiling, treating has backflow to produce in spherical condensation tube, after insulation reaction 7 hours, in this system, slowly drip the end carboxyl polymer solution that make (1), approximately drip 2 hours, control temperature of reaction at 90～120 ℃, reflux water-dividing, react 4～6 hours, the solvent in system is removed in then underpressure distillation, obtain end and be the hyperbranched type economization agent for concrete described in i.e. this invention of hyperbranched polymer of R base.
example 3
(1) take 48.034g Succinic anhydried, 78.720g(0.48mol) oxyethane methyl alcohol annexation [CH
3(OC
2h
4)
3oH] be dissolved in respectively in appropriate DMAc, then add there-necked flask, in flask, add 0.38g catalyzer DMAP, be warmed up to 70 ℃ of reactions 4 hours, make end carboxyl polymer CH
3(OC
2h
4)
3oOCCH
2cH
2cOOH solution;
(2) take 45.032g Succinic anhydried, 47.313g diethanolamine, first diethanolamine is dissolved in appropriate DMAc, after dissolving, pour in the there-necked flask with magnetic stirring apparatus, again Succinic anhydried is dissolved with appropriate DMAc, then it is slowly added drop-wise in there-necked flask, stir on dropping limit, limit, approximately drips 0.5 hour, normal-temperature reaction 3 hours, obtains AB
2type monomer (0.45mol).In above-mentioned system, first add 60 mL toluene (toluene is band aqua), add 1.342g(0.01mol) core molecule TriMethylolPropane(TMP), add 0.7 g catalyzer tosic acid, then start heating, until boiling, treating has backflow to produce in spherical condensation tube, after insulation reaction 7 hours, in this system, slowly drip the end carboxyl polymer solution that make (1), approximately drip 2 hours, control temperature of reaction at 90～120 ℃, reflux water-dividing, react 4～6 hours, the solvent in system is removed in then underpressure distillation, obtain end and be the hyperbranched type economization agent for concrete described in i.e. this invention of hyperbranched polymer of R base.
example 4
(1) taking 24.017g Succinic anhydried, 144g(0.24mol) MPEG-600 is dissolved in respectively in appropriate DMAc, then adds there-necked flask, in flask, adds 0.50g catalyzer DMAP, is warmed up to 70 ℃ of reactions 4 hours, makes end carboxyl polymer solution;
(2) take 18.013g Succinic anhydried, 18.927g diethanolamine, first diethanolamine is dissolved in appropriate DMAc, after dissolving, pour in the there-necked flask with magnetic stirring apparatus, again Succinic anhydried is dissolved with appropriate DMAc, then it is slowly added drop-wise in there-necked flask, stir on dropping limit, limit, approximately drips 0.5 hour, normal-temperature reaction 3 hours, obtains AB
2type monomer (0.18mol).In above-mentioned system, first add 60 mL toluene (toluene is band aqua), add 2.683g(0.02mol) core molecule TriMethylolPropane(TMP), add 0.65 g catalyzer tosic acid, then start heating, until boiling, treating has backflow to produce in spherical condensation tube, after insulation reaction 7 hours, in this system, slowly drip the end carboxyl polymer solution that make (1), approximately drip 2 hours, control temperature of reaction at 90～120 ℃, reflux water-dividing, react 4～6 hours, the solvent in system is removed in then underpressure distillation, obtain end and be the hyperbranched type economization agent for concrete described in i.e. this invention of hyperbranched polymer of R base.
example 5
(1) take 24.017g Succinic anhydried, 240gMPEG-1000(0.24mol) be dissolved in respectively in appropriate DMAc, then add there-necked flask, in flask, add 0.53g catalyzer DMAP, be warmed up to 70 ℃ of reactions 4 hours, make end carboxyl polymer solution;
(2) take 18.013g Succinic anhydried, 18.927g diethanolamine, first diethanolamine is dissolved in appropriate DMAc, after dissolving, pour in the there-necked flask with magnetic stirring apparatus, again Succinic anhydried is dissolved with appropriate DMAc, then it is slowly added drop-wise in there-necked flask, stir on dropping limit, limit, approximately drips 0.5 hour, normal-temperature reaction 3 hours, obtains AB
2type monomer (0.18mol).In above-mentioned system, first add 60 mL toluene (toluene is band aqua), add 2.683g(0.02mol) core molecule TriMethylolPropane(TMP), add 0.85 g catalyzer tosic acid, then start heating, until boiling, treating has backflow to produce in spherical condensation tube, after insulation reaction 7 hours, in this system, slowly drip the end carboxyl polymer solution that make (1), approximately drip 2 hours, control temperature of reaction at 90～120 ℃, reflux water-dividing, react 4～6 hours, the solvent in system is removed in then underpressure distillation, obtain end and be the hyperbranched type economization agent for concrete described in i.e. this invention of hyperbranched polymer of R base.
performance test
Reduce performance according to JCJ/T70-2009 test architecture mortar, according to cement: sand: water=1:2:0.33 proportioning, the water reducer of admixture cement consumption 0.75%, the hyperbranched type economization agent for concrete that the present invention of admixture cement consumption 0.5% ~ 2% synthesizes, preparation sand-cement slurry, measure mortar seasoning shrinkage value with vertical mortar retractometer, test strength of cement mortar according to GB/T17671-1999.
In following table, contrasting 1 economization agent is CH
3(OC
2h
4)
3oH, the economization agent of contrast 2 is MPEG-600.
The economization agent for concrete of above-mentioned example has been carried out to performance test, and data are as follows:
The decrement that records the 28d of synthetic hyperbranched type economization agent for concrete can reach more than 48.5%, substantially all more than 50%; The decrement of 90d can reach more than 36.3%.Record result and show that synthetic economization agent for concrete affects to some extent on mortar strength, but impact is not remarkable.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not subject to the restriction of embodiment; other is any does not deviate from change, modification, the combination made under spirit of the present invention and principle, substitute, simplify and all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (10)
1. the application of hyperbranched polymer in economization agent for concrete, is characterized in that described hyperbranched polymer props up chain end and contains
.
2. application according to claim 1, is characterized in that 2≤n≤5 or n > 10.
3. application according to claim 1 and 2, it is characterized in that hyperbranched polymer is concrete quality as economization agent for concrete addition content 0.5 ~ 2%.
4. application according to claim 1 and 2, is characterized in that hyperbranched polymer obtains by following steps:
1. Succinic anhydried is reacted to the hydrophilic polymer that generates end carboxyl with Voranol EP 2001 or polyglycol ether;
2. in Hyperbranched Polymer with Terminal Hydroxyl, add the hydrophilic polymer reaction of holding carboxyl, to obtain final product.
5. application according to claim 4, is characterized in that described Voranol EP 2001 molecular formula is CH
3o (C
2h
4o)
nh, wherein 2≤n≤5 or n > 10.
6. application according to claim 4, is characterized in that described Hyperbranched Polymer with Terminal Hydroxyl obtains by following steps:
1. Succinic anhydried and diethanolamine are according to the synthetic AB of mol ratio 1:1
2monomer;
2. core molecule and AB
2monomer obtains Hyperbranched Polymer with Terminal Hydroxyl according to 1:3-45 molar ratio reaction.
7. application according to claim 4, is characterized in that the core molecule of synthetic Hyperbranched Polymer with Terminal Hydroxyl and the mol ratio of the hydrophilic polymer of end carboxyl are 1:6 ~ 48.
8. application according to claim 6, is characterized in that core molecule and AB
2monomer mole ratio is 1:3,1:9,1:21 or 1:45, obtain respectively first-generation Hyperbranched Polymer with Terminal Hydroxyl, s-generation Hyperbranched Polymer with Terminal Hydroxyl, third generation Hyperbranched Polymer with Terminal Hydroxyl or the 4th generation Hyperbranched Polymer with Terminal Hydroxyl.
9. application according to claim 4, is characterized in that the core molecule of synthetic Hyperbranched Polymer with Terminal Hydroxyl and the mol ratio of the hydrophilic polymer of end carboxyl are 1:6 ~ 48.
10. application according to claim 4, is characterized in that described Voranol EP 2001 molecular formula is CH
3(OC
2h
4)
3oH, polyglycol ether is MPEG-600 or MPEG-1000.
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|---|---|---|---|
| CN201410038987.6A CN103803840B (en) | 2014-01-27 | 2014-01-27 | The application of dissaving polymer in economization agent for concrete |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105543852A (en) * | 2015-12-09 | 2016-05-04 | 济南大学 | Composite concrete reinforcement corrosion inhibitor |
| CN107446140A (en) * | 2017-08-17 | 2017-12-08 | 美巢集团股份公司 | A kind of low VOC environment-friendly concretes interface treating agent and preparation method thereof |
| CN107446139A (en) * | 2017-08-03 | 2017-12-08 | 陕西铁路工程职业技术学院 | A kind of preparation method of hyperbranched economization agent |
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| CN107446139A (en) * | 2017-08-03 | 2017-12-08 | 陕西铁路工程职业技术学院 | A kind of preparation method of hyperbranched economization agent |
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| CN107446140B (en) * | 2017-08-17 | 2020-12-29 | 美巢集团股份公司 | Low-VOC (volatile organic compound) environment-friendly concrete interface treating agent and preparation method thereof |
| US11149104B2 (en) | 2018-07-26 | 2021-10-19 | Beijing University Of Technology | Preparation method of temperature/pH-responsive polycarboxylic acid |
| CN110015858A (en) * | 2019-05-22 | 2019-07-16 | 南通大学 | A kind of high-performance retardation setting high efficiency pumping admixture and preparation method thereof |
| CN110015858B (en) * | 2019-05-22 | 2021-06-22 | 南通居者安建筑科学研究院有限公司 | High-performance retarding high-efficiency pumping aid and preparation method thereof |
| CN111808243A (en) * | 2020-07-28 | 2020-10-23 | 陕西科技大学 | Low-grade concrete workability regulator and preparation method thereof |
| CN111808243B (en) * | 2020-07-28 | 2022-05-10 | 陕西科技大学 | Low-grade concrete workability regulator and preparation method thereof |
| CN115093487A (en) * | 2021-12-30 | 2022-09-23 | 江苏超力建材科技有限公司 | Hydration heat inhibitor and preparation method thereof |
| CN115093487B (en) * | 2021-12-30 | 2023-07-25 | 江苏超力建材科技有限公司 | Hydration heat inhibitor and preparation method thereof |
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