CN104805445A - Environment-friendly copper corrosion inhibitor and preparation method thereof - Google Patents
Environment-friendly copper corrosion inhibitor and preparation method thereof Download PDFInfo
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- CN104805445A CN104805445A CN201510127205.0A CN201510127205A CN104805445A CN 104805445 A CN104805445 A CN 104805445A CN 201510127205 A CN201510127205 A CN 201510127205A CN 104805445 A CN104805445 A CN 104805445A
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- China
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- copper
- phosphoric acid
- water
- metasilicate
- silicate
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Abstract
The invention provides an environment-friendly copper corrosion inhibitor and a preparation method thereof. The copper corrosion inhibitor is formed by combining polyaspartic acid, sodium molybdate, phosphate ester, silicate or metasilicate and pure water with the mass ratio being (10-20):(15-35):(5-10):(3-8):(47-77). According to the preparation method of the environment-friendly copper corrosion inhibitor, the five substances are sequentially put into a stirring container to be stirred and dissolved in a certain mass ratio, and the copper corrosion inhibitor is obtained. The five substances are compounded in a certain mass ratio for use, the copper corrosion inhibition effect is obviously superior to that when any one of the five substances is used separately, and the copper corrosion inhibitor is a green water treatment agent, causes no harm to the environment and conforms to the sustainable development requirement. The corrosion inhibitor can substantially reduce corrosion to copper and copper alloys in industrial circulating cooling water and can be widely applied to the field of corrosion inhibition of industrial copper-containing equipment.
Description
Technical field
The present invention relates to the every field such as industrial, civilian, relate in particular to electronics, interchanger, reactor, water supply pipe, double water innercooling electric generator, cooling water system, recirculating cooling water system, computer and control device and ocean environment and marine industry, refer to a kind of environmentally friendly copper inhibitor and preparation method thereof especially.
Background technology
Copper has excellent intensity, machining property, electroconductibility, the feature such as weldability and erosion resistance.For a long time, be all widely used in industry, the every field such as military and civilian.Under normal circumstances, the tendency that copper does not corrode, but, in oxygen containing water, oxidizing acid and containing CN
-, NH
4 +deng being formed in the solution of complexing ion with copper, then there is more serious corrosion in copper.Along with the development of power industry and the Large scale construction of thermal power generation, the application of copper alloy in double water innercooling electric generator cooling water system and recirculating cooling water system gets more and more.In various corrosive medium, copper inhibitor is used to suppress the corrosion of Copper and its alloy to be very cost-effective way.Therefore, seek favorable rust preventing effect, inhibition efficiency is high, and waste liquid easily processes, and inexpensive non-harmful copper inhibitor has great importance.
Inhibiter be one in a suitable form or concentration be present in surrounding medium, can prevent or reduce the mixture of one or more chemical substances of corrosion.Some traditional high efficiency moderators, as benzotriazole and thiadiazoles and derivative thereof, all contain the heterogeneous ring compound such as nitrogen, sulphur, difficult for biological degradation, even toxic, can cause serious problem of environmental pollution.Therefore, novel green environment friendly inhibiter must be studied, carry out alternative traditional inhibiter.
Summary of the invention
The invention provides a kind of environmentally friendly copper inhibitor and preparation method thereof, copper inhibitor is combined by poly aspartic acid, Sodium orthomolybdate, phosphoric acid ester, silicate or metasilicate and pure water, and the mass ratio of poly aspartic acid, Sodium orthomolybdate, phosphoric acid ester, silicate or metasilicate and pure water is 10 ~ 20:15 ~ 35:5 ~ 10:3 ~ 8:47 ~ 77.The invention provides a kind of preparation method of environmentally friendly copper inhibitor, by five kinds of materials according to certain mass ratio to put into successively in stirred vessel stirring and dissolving product of the present invention.In the present invention, five kinds of materials press certain mass than composite use, are obviously better than wherein any one material and are used alone, and be Green Water treatment agent to the corrosion mitigating effect of copper, to environment without harm, are a kind of inhibiter meeting Sustainable development needs.Inhibiter in the present invention can significantly reduce Copper and its alloy erosion rate, the inhibition field of industrial cupric equipment can be widely used in.
the technical solution adopted in the present invention is as follows:
The invention provides a kind of environmentally friendly copper inhibitor and preparation method thereof, copper inhibitor is combined by poly aspartic acid, Sodium orthomolybdate, phosphoric acid ester, silicate or metasilicate and pure water, and the mass ratio of poly aspartic acid, Sodium orthomolybdate, phosphoric acid ester, silicate or metasilicate and pure water is 10 ~ 20:15 ~ 35:5 ~ 10:3 ~ 8:47 ~ 77.
Described environmentally friendly copper inhibitor, it is characterized in that: copper inhibitor is combined by poly aspartic acid, Sodium orthomolybdate, phosphoric acid ester, silicate or metasilicate and pure water, and the mass ratio of poly aspartic acid, Sodium orthomolybdate, phosphoric acid ester, silicate or metasilicate and pure water is 10 ~ 20:15 ~ 35:5 ~ 10:3 ~ 8:47 ~ 77.
Described environmentally friendly copper inhibitor, is characterized in that: described phosphoric acid ester is PAPE and phosphoric acid monoester.
Described environmentally friendly copper inhibitor, is characterized in that: described silicate or metasilicate are water glass or Starso.
Described environmentally friendly copper inhibitor, is characterized in that: the preparation method that the invention provides a kind of environmentally friendly copper inhibitor, by five kinds of materials according to certain mass ratio to put into successively in stirred vessel stirring and dissolving product of the present invention.
The present invention compared with prior art has the following advantages:
Environmentally friendly copper inhibitor of the present invention is combined by poly aspartic acid, Sodium orthomolybdate, phosphoric acid ester, silicate or metasilicate and pure water.
In the present invention, five kinds of materials press certain mass than composite use, obviously be better than wherein any one material to the corrosion mitigating effect of copper to be used alone, and be Green Water treatment agent, readily biodegradable, pollution-free, nontoxic, to environment without harm, it is a kind of inhibiter meeting Sustainable development needs.
embodiment
Embodiment 1:
Choose raw material by weight percentage
Poly aspartic acid 15%,
Sodium orthomolybdate 20%,
PAPE 5%,
Water glass 5%,
All the other are water.
Reverse osmosis produced water, poly aspartic acid, Sodium orthomolybdate, PAPE, silicate are added in container in proportion successively, at room temperature stirs 2 ~ 3 hours, obtain product.
Embodiment 2:
Choose raw material by weight percentage
Poly aspartic acid 10%,
Sodium orthomolybdate 25%,
PAPE 5%,
Water glass 5%,
All the other are water.
Reverse osmosis produced water, poly aspartic acid, Sodium orthomolybdate, PAPE, silicate are added in container in proportion successively, at room temperature stirs 2 ~ 3 hours, obtain product.
Embodiment 3:
Choose raw material by weight percentage
Poly aspartic acid 10%,
Sodium orthomolybdate 25%,
PAPE 10%,
Water glass 8%,
All the other are water.
Reverse osmosis produced water, poly aspartic acid, Sodium orthomolybdate, PAPE, silicate are added in container in proportion successively, at room temperature stirs 2 ~ 3 hours, obtain product.
Embodiment 4:
Choose raw material by weight percentage
Poly aspartic acid 15%,
Sodium orthomolybdate 20%,
Phosphoric acid monoester 5%,
Starso 5%,
All the other are water.
Reverse osmosis produced water, poly aspartic acid, Sodium orthomolybdate, phosphoric acid monoester, metasilicate are added in container in proportion successively, at room temperature stirs 2 ~ 3 hours, obtain product.
Embodiment 5:
Choose raw material by weight percentage
Poly aspartic acid 10%,
Sodium orthomolybdate 25%,
Phosphoric acid monoester 5%,
Starso 5%,
All the other are water.
Reverse osmosis produced water, poly aspartic acid, Sodium orthomolybdate, phosphoric acid monoester, metasilicate are added in container in proportion successively, at room temperature stirs 2 ~ 3 hours, obtain product.
Embodiment 6:
Choose raw material by weight percentage
Poly aspartic acid 10%,
Sodium orthomolybdate 25%,
Phosphoric acid monoester 10%,
Starso 8%,
All the other are water.
Reverse osmosis produced water, poly aspartic acid, Sodium orthomolybdate, phosphoric acid monoester, metasilicate are added in container in proportion successively, at room temperature stirs 2 ~ 3 hours, obtain product.
application experiment and result
one, experimental technique:
Mensuration-rotary hanging plate the method for water conditioner corrosion inhibition
1, experiment condition
(1) test solution temperature 45 C scholar 1.0 DEG C.Also other temperature can be selected according to actual needs.
(2) lacing film linear velocity: 0.30 m/s-0.40 m/s.
(3) test solution volume and lacing film area ratio: 20mL/cm
2.
(4) test glass: 2000mL beaker, meets the regulation of GB/T 15724.1.
(5) each test glass should be able to pass into air continuously, and air flow is 100ml/min-200mL/min.
(6) distance in lacing film upper end and test solution face: should 2cm greatly.
(7) lacing film lower end and the distance of giving vent to anger a little: should be greater than 3cm, air-flow directly must not impact lacing film.
(8) parallel laboratory test number: to each experiment condition, should have the lacing film that 4-6 sheet is identical to carry out parallel laboratory test.
(9) experimental period: 72 h.
(10) experimentally requirement, can select pre-film lacing film, also can select not pre-film lacing film.
2, experimental procedure
(1) lacing film filter paper will be tested antirust grease wiped clean, then in acetone and dehydrated alcohol, (every 10 lacing films are with being no less than 50 ml mentioned reagent) is cleaned with absorbent cotton respectively, be placed on clean filter paper, blot with filter paper, be placed in dry bath more than device 4h, weigh (smart reef is to 0.0002), be stored in moisture eliminator, stand-by.
(2) empirically requirement, prepares water conditioner stock solution.Stock concentrations is generally about 100 times of running concentration.Stock solution should in the same day or preparation the day before yesterday.
(3) empirically requirement, gets out experimental water.Experimental water can be the standard preparation water of on-the-spot water, the water prepared on demand or recommendation.
(4) in test glass, add water conditioner stock solution, be accurate to.0.02 mL, adds experimental water to certain volume in 2000ml test glass, and mixing, is test solution.Groove is drawn at test glass outer wall and liquid level same level place.Test glass is placed in water bath with thermostatic control, in each test glass, leads to people's air continuously.
(5) when test solution reaches assigned temperature, be linked into experiment lacing film, actuating motor, lacing film rotated by certain rotation speed, and starts timing.
(6) test glass is not added a cover, and makes test solution spontaneous evaporation, adds distilled water once every 1 h-2h, makes liquid level remain on groove place.
(7) when in place between when reaching designated value, stop lacing film rotating, take out lacing film and also carry out visual inspection and record.
(8) lacing film hairbrush is scrubbed clean, in Acidwash solution, then soak 3 min-5 min, take out, after rapid tap water, immerse about 30 s in sodium hydroxide solution immediately, take out, with distilled water flushing, with shaking paper wiping and blotting, in dehydrated alcohol, soak about 3min, be placed on clean filter paper, blot with filter paper, be placed in more than moisture eliminator 4h, weigh (being accurate to 0.0002g).Do the pickling blank assay of lacing film simultaneously.
(9) blank assay with water conditioner is done.
(10) visual inspection is carried out and record to the lacing film after pickling.
two, experimental result:
Embodiment in GB water to corrosion mitigating effect contrast table 1
Claims (7)
1. the invention provides a kind of environmentally friendly copper inhibitor and preparation method thereof, copper inhibitor is combined by poly aspartic acid, Sodium orthomolybdate, phosphoric acid ester, silicate or metasilicate and pure water, and the mass ratio of poly aspartic acid, Sodium orthomolybdate, phosphoric acid ester, silicate or metasilicate and pure water is 10 ~ 20:15 ~ 35:5 ~ 10:3 ~ 8:47 ~ 77.
2. environmentally friendly copper inhibitor according to claim 1, it is characterized in that: copper inhibitor is combined by poly aspartic acid, Sodium orthomolybdate, phosphoric acid ester, silicate or metasilicate and pure water, and the mass ratio of poly aspartic acid, Sodium orthomolybdate, phosphoric acid ester, silicate or metasilicate and pure water is 10 ~ 20:15 ~ 35:5 ~ 10:3 ~ 8:47 ~ 77.
3. environmentally friendly copper inhibitor according to claim 1, is characterized in that: described phosphoric acid ester is PAPE and phosphoric acid monoester.
4. environmentally friendly copper inhibitor according to claim 1, is characterized in that: described silicate or metasilicate are water glass or Starso.
5. environmentally friendly copper inhibitor according to claim 1, it is characterized in that: the preparation method that the invention provides a kind of environmentally friendly copper inhibitor, by five kinds of materials according to certain mass ratio to put into successively in stirred vessel stirring and dissolving product of the present invention.
6. poly aspartic acid is as the water miscible aminoacid polymers of one, because containing peptide bond in its molecule, is easily decomposed by the microorganisms into CO
2and H
2o, except the character with water soluble polycarboxylic acid, also has readily biodegradable, the feature such as pollution-free, nontoxic, also has good corrosion inhibition simultaneously.
7. phosphoric acid ester is the neutral medium corrosion inhibitor of organic, contributes to forming chemisorbed film on copper surface, and this film is very thin, only has individual molecule or several molecular layers thick, can reach the object of surfacecti proteon, play the effect of inhibition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510127205.0A CN104805445A (en) | 2015-03-24 | 2015-03-24 | Environment-friendly copper corrosion inhibitor and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510127205.0A CN104805445A (en) | 2015-03-24 | 2015-03-24 | Environment-friendly copper corrosion inhibitor and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104805445A true CN104805445A (en) | 2015-07-29 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510127205.0A Pending CN104805445A (en) | 2015-03-24 | 2015-03-24 | Environment-friendly copper corrosion inhibitor and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154049A (en) * | 2015-08-04 | 2015-12-16 | 中国石油化工股份有限公司 | Corrosion inhibitor and preparation method thereof |
-
2015
- 2015-03-24 CN CN201510127205.0A patent/CN104805445A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154049A (en) * | 2015-08-04 | 2015-12-16 | 中国石油化工股份有限公司 | Corrosion inhibitor and preparation method thereof |
| CN105154049B (en) * | 2015-08-04 | 2018-03-23 | 中国石油化工股份有限公司 | A kind of corrosion inhibiter and preparation method thereof |
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Application publication date: 20150729 |