CN104341560A - High polymer waterproofing agent and synthesis method and application thereof - Google Patents
High polymer waterproofing agent and synthesis method and application thereof Download PDFInfo
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- CN104341560A CN104341560A CN201410612028.0A CN201410612028A CN104341560A CN 104341560 A CN104341560 A CN 104341560A CN 201410612028 A CN201410612028 A CN 201410612028A CN 104341560 A CN104341560 A CN 104341560A
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- mortar
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- polyethylene glycol
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- resisting agent
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Abstract
The invention belongs to the technical field of waterproofing of buildings, and discloses a high polymer waterproofing agent and a synthesis method and an application thereof. The preparation method comprises the following steps: feeding polyethylene glycol, oleic acid and p-toluenesulfonic acid to a reaction kettle, and heating to obtain oleic acid polyglycol ester; dissolving oleic acid polyglycol ester and acrylic acid into water; evenly dropwise adding an ammonium persulfate solution; neutralizing the system after heat preservation for a certain period of time, so as to prepare the waterproofing agent. The high polymer waterproofing agent is capable of cutting off and sealing capillary tubes on a mortar surface in the cement solidification process, and reducing gaps in mortar, so as to effectively increase the waterproofness of the mortar system. The waterproofing agent disclosed by the invention does not contain chloridion; the compressive strength of the mortar is improved by reducing water consumption; the defects that a traditional waterproofing agent easily corrodes a reinforcing steel material, and negatively affects the strength of cement mortar are effectively overcome.
Description
Technical field
The invention belongs to building waterproofing technique field, particularly a kind of polymer water-resisting agent and synthetic method thereof and application.
Background technology
Buildings waterproof is anti-sealing to the infiltration at some position of buildings from material of construction or textural taked measure.Material waterproofing is the path blocking water by material of construction, to reach the object of anti-leakage, comprises waterproof coiled material, coating water-proof, concrete and mortar waterproof etc.In construction work, sand-cement slurry is commonly used for building wall and indoor and outdoor is plastered.Waterproof mortar, due to advantages such as its operating efficiency is high, moderate cost, good endurance, has boundless application prospect.
Mortar waterproof agent can be divided into mineral compound class and organic compound class two kinds substantially.Mineral compound class has iron(ic) chloride, wollastonite powder end, alum etc.Organic compound class comprises aliphatics and its esters, organosilicon, paraffin, pitch, rubber and water soluble resin emulsion etc.But all more or less there are some defects in most mortar waterproof agent.Such as, although alum has certain water-repellancy, its interpolation can accelerate cement solidification, easily causes cracking, affects the intensity of sand-cement slurry; Containing chlorion, very easily corrosion reinforcing bar material in iron(ic) chloride class water-resisting agent; Organosilicon and resin emulsion class water-resisting agent need (generally to need more than 5% of gelling material) under larger addition just can present desirable water resistance, and use cost is too high and easily weaken strength of cement mortar.
Summary of the invention
For overcoming the defect and weak point that exist in above-mentioned prior art, primary and foremost purpose of the present invention is the synthetic method providing a kind of polymer water-resisting agent; This polymer water-resisting agent is vinylformic acid-Polyethylene Glycol Oleate polymkeric substance, is a kind of additive significantly improving mortar water resistance and improve mortar mechanical strength.
Another object of the present invention is to the polymer water-resisting agent providing a kind of above-mentioned synthetic method to obtain.
Another object of the present invention is the application providing above-mentioned polymer water-resisting agent.
The object of the invention is achieved through the following technical solutions:
A synthetic method for polymer water-resisting agent, comprises following synthesis step:
(1) polyoxyethylene glycol, oleic acid, tosic acid are dropped in reactor, be warming up to 100 ~ 120 DEG C, insulation reaction 4 ~ 5 hours, obtains Polyethylene Glycol Oleate;
(2) Polyethylene Glycol Oleate and vinylformic acid are dissolved in the water, evenly ammonium persulfate aqueous solution is dripped after being warmed up to 60 ~ 70 DEG C, time for adding 100 ~ 150 minutes, at 60 ~ 65 DEG C, 2 ~ 4 hours are incubated after dropwising, after be cooled to 45 DEG C, add NaOH neutralization, adjustment system pH is 7 ~ 8, obtained polymer water-resisting agent.
The mol ratio of step (1) described polyoxyethylene glycol and oleic acid is 1:(1.0 ~ 1.1); The consumption of described tosic acid is 1 ~ 2% of polyoxyethylene glycol quality.
Step (1) described polyoxyethylene glycol is non-end-blocking polyoxyethylene glycol, and molecular weight is 200 ~ 10000.
Step (2) described Polyethylene Glycol Oleate and acrylic acid mol ratio are 1:(0.8 ~ 1.5); The consumption of described water is 100 ~ 150% of Polyethylene Glycol Oleate quality; Ammonium persulphate in described ammonium persulfate aqueous solution is 0.5 ~ 1.5% of Polyethylene Glycol Oleate quality; The mass percent concentration of described ammonium persulfate aqueous solution is 5.0% ~ 7.0%.
A kind of polymer water-resisting agent obtained by above-mentioned synthetic method.
Above-mentioned polymer water-resisting agent is improving mortar water resistance and the application that improves in mortar mechanical strength as additive.
The present invention compared with prior art tool has the following advantages and effect:
(1) vinylformic acid-Polyethylene Glycol Oleate polymkeric substance is in the process of theing cement solidifies, energy cut off and close the kapillary of mortar surface, increase mortar density, thus effective increase mortar water resistance (mortar microscopic appearance is shown in Fig. 1---pbz polymer water-resisting agent mortar scanning electron microscope (SEM) photograph).
(2) vinylformic acid-Polyethylene Glycol Oleate polymkeric substance has amphipathic, can be adsorbed on cement particle surface, reduces frictional force between cement granules, in equal denseness decline low water usage amount, thus reaches the object improving mortar ultimate compression strength.
(3) this technology synthesis route is simple, Product Green environmental protection (be aqueous solution systems, neutral, not chloride ion-containing).
Accompanying drawing explanation
Fig. 1 is pbz polymer water-resisting agent mortar scanning electron microscope (SEM) photograph.
Fig. 2 is polymer water-resisting agent molecular weight distribution curve figure.
Embodiment
Below in conjunction with embodiment and accompanying drawing, further detailed description is done to the present invention, but embodiments of the present invention are not limited thereto.
Embodiment 1
(1) preparation of intermediate: 100.0 grams of polyoxyethylene glycol (molecular weight 600), 51.7 grams of oleic acid, 1.2 grams of tosic acid are dropped in reactor, be warming up to 110 DEG C, insulation reaction 4 hours, obtains Polyethylene Glycol Oleate.
(2) preparation of polymer water-resisting agent: 100 grams of step (1) gained Polyethylene Glycol Oleates, 10.8 grams of vinylformic acid are dissolved in 105 grams of water, evenly 25 grams of ammonium persulfate aqueous solutions (concentration 5.5%) are dripped after being warmed up to 65 DEG C, time for adding 100 minutes, at 65 DEG C, 3 hours are incubated after dropwising, after be cooled to 45 DEG C, add NaOH neutralization, adjustment system pH to 7-8, obtained polymer water-resisting agent.
Embodiment 2
(1) preparation of intermediate: 100.0 grams of polyoxyethylene glycol (molecular weight 2400), 12.5 grams of oleic acid, 1.2 grams of tosic acid are dropped in reactor, be warming up to 100 DEG C, insulation reaction 4 hours, obtains Polyethylene Glycol Oleate.
(2) preparation of polymer water-resisting agent: 100 grams of step (1) gained Polyethylene Glycol Oleates, 3.0 grams of vinylformic acid are dissolved in 110 grams of water, evenly 25 grams of ammonium persulfate aqueous solutions (concentration 5.5%) are dripped after being warmed up to 60 DEG C, time for adding 100 minutes, at 65 DEG C, 4 hours are incubated after dropwising, after be cooled to 45 DEG C, add NaOH neutralization, adjustment system pH to 7-8, obtained polymer water-resisting agent.
Gel permeation chromatography test result (see Fig. 2) finds, molecular weight analyte distribution is comparatively even, molecular-weight average about 180000.
Embodiment 3
(1) preparation of intermediate: 100.0 grams of polyoxyethylene glycol (molecular weight 10000), 3.1 grams of oleic acid, 1.7 grams of tosic acid are dropped in reactor, be warming up to 105 DEG C, insulation reaction 5 hours, obtains Polyethylene Glycol Oleate.
(2) preparation of polymer water-resisting agent: 100 grams of step (1) gained Polyethylene Glycol Oleates, 1.05 grams of vinylformic acid are dissolved in 105 grams of water, evenly 23 grams of ammonium persulfate aqueous solutions (concentration 6.0%) are dripped after being warmed up to 70 DEG C, time for adding 120 minutes, at 60 DEG C, 2 hours are incubated after dropwising, after be cooled to 45 DEG C, add NaOH neutralization, adjustment system pH to 7-8, obtained polymer water-resisting agent.
Comparative example
With embodiment 1-3 prepare waterproof mortar with being mixed with ferric chloride waterproofing agent mortar, sodium methyl silicate water-resisting agent mortar, acrylic resin water-resisting agent mortar, blank mortar carry out performance comparison, result is as shown in table 1.
Table 1 performance test results
Mortar formula is cement: flyash: sand: water=230:110:1200; Water-resisting agent volume is 3% of gelling material (cement, flyash); Cement adopts PO42.5R cement, and flyash is II grade of flyash, and grain fineness number modulus is 2.3; Water consumption makes slurry consistency be 85+5mm; Detection method reference standard: mortar, concrete waterproofer---JC474-2008.
By comparing, mortar modifier prepared by known the present invention compares conventional waterproof agent, improves mortar waterproof at the same time and mechanical property aspect has obvious advantage.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from spirit of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. a synthetic method for polymer water-resisting agent, is characterized in that comprising following synthesis step:
(1) polyoxyethylene glycol, oleic acid, tosic acid are dropped in reactor, be warming up to 100 ~ 120 DEG C, insulation reaction 4 ~ 5 hours, obtains Polyethylene Glycol Oleate;
(2) Polyethylene Glycol Oleate and vinylformic acid are dissolved in the water, evenly ammonium persulfate aqueous solution is dripped after being warmed up to 60 ~ 70 DEG C, time for adding 100 ~ 150 minutes, at 60 ~ 65 DEG C, 2 ~ 4 hours are incubated after dropwising, after be cooled to 45 DEG C, add NaOH neutralization, adjustment system pH is 7 ~ 8, obtained polymer water-resisting agent.
2. synthetic method according to claim 1, is characterized in that: the mol ratio of step (1) described polyoxyethylene glycol and oleic acid is 1:(1.0 ~ 1.1); The consumption of described tosic acid is 1 ~ 2% of polyoxyethylene glycol quality.
3. synthetic method according to claim 1, is characterized in that: step (1) described polyoxyethylene glycol is non-end-blocking polyoxyethylene glycol, and molecular weight is 200 ~ 10000.
4. synthetic method according to claim 1, is characterized in that: step (2) described Polyethylene Glycol Oleate and acrylic acid mol ratio are 1:(0.8 ~ 1.5); The consumption of described water is 100 ~ 150% of Polyethylene Glycol Oleate quality; Ammonium persulphate in described ammonium persulfate aqueous solution is 0.5 ~ 1.5% of Polyethylene Glycol Oleate quality; The mass percent concentration of described ammonium persulfate aqueous solution is 5.0% ~ 7.0%.
5. the polymer water-resisting agent obtained by synthetic method described in any one of Claims 1 to 4.
6. polymer water-resisting agent according to claim 1 is improving mortar water resistance and the application that improves in mortar mechanical strength as additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410612028.0A CN104341560B (en) | 2014-10-31 | A kind of macromolecule waterproofing agent and synthetic method thereof and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410612028.0A CN104341560B (en) | 2014-10-31 | A kind of macromolecule waterproofing agent and synthetic method thereof and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104341560A true CN104341560A (en) | 2015-02-11 |
| CN104341560B CN104341560B (en) | 2017-01-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109293315A (en) * | 2018-11-28 | 2019-02-01 | 华砂砂浆有限责任公司 | A kind of Polymer cement materials and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109293315A (en) * | 2018-11-28 | 2019-02-01 | 华砂砂浆有限责任公司 | A kind of Polymer cement materials and preparation method thereof |
| CN109293315B (en) * | 2018-11-28 | 2022-03-22 | 华砂砂浆有限责任公司 | Polymer cement waterproof mortar and preparation method thereof |
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