CN106676535A - Oleic acid radical hydroxyethyl imidazoline vapor-phase rustproof fiber board and preparing method thereof - Google Patents
Oleic acid radical hydroxyethyl imidazoline vapor-phase rustproof fiber board and preparing method thereof Download PDFInfo
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- CN106676535A CN106676535A CN201710011571.9A CN201710011571A CN106676535A CN 106676535 A CN106676535 A CN 106676535A CN 201710011571 A CN201710011571 A CN 201710011571A CN 106676535 A CN106676535 A CN 106676535A
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- Prior art keywords
- rust prevention
- volatile rust
- vapor
- acidic group
- inhibitor
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/02—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors
Abstract
The invention provides an oleic acid radical hydroxyethyl imidazoline vapor-phase rustproof fiber board and a preparing method thereof. A compound inhibitor oleic acid radical hydroxyethyl imidazoline, phytic acid, decanedioic acid, sodium benzoate, 2-methylimidazole and silicon dioxide are fully mixed uniformly according to the mass ratio of (3.2-4.5):(2.1-3.5):(1.3-2.3):(1.3-2.4):(1.5-2.5):(0.8-1.5) and dispersed into deionized water, ammonia water is used for adjusting the pH value to be about 8.0-9.0, and the mixture is prepared into vapor-phase inhibitor aqueous dispersion with the mass concentration being 5%-70%; and a coating machine is adopted for coating the two surfaces of the paper fiberboard with the vapor-phase inhibitor water solution, the fiber board is dried in air, and the vapor-phase rustproof fiber board with the capacity being about 10-80g/m<2> is obtained. According to the oleic acid radical hydroxyethyl imidazoline vapor-phase rustproof fiber board, the size and the thickness can be designed, the fiber board is removed easily after being used, the composite vapor-phase inhibitor does not contain harmful components like nitrite, and the fiber board is convenient and efficient to use, environmentally friendly and safe.
Description
Technical field：
The present invention relates to a kind of cocos nucifera oil acidic group hydroxyethyl imidazole quinoline volatile rust preventive material and packing articles field, in particular to
A kind of cocos nucifera oil acidic group hydroxyethyl imidazole quinoline volatile rust prevention fibre board and preparation method thereof.
Background technology：
In the today in modern industrialization epoch, metal and its product are seen everywhere.But due to the oxygen being widely present in air
The salt contained in gas and water steam, sour gas and vapor, it is easy to which atmospheric corrosion occurs, generates in metal surface and aoxidizes
Thing and hydroxide mixture, so as to damaging their performance and reducing its life-span, can cause a serious accident when serious or cause
Equipment scrapping.Especially metal and its product are at sea transported during the overland transport moist with hyperpyrexia, are more prone to meet with corruption
Lose and corrosion occurs.According to statistics, the economic loss that the whole world is caused every year because of corrosion accounts for 3% or so of GDP then, about 1/3
Steel because corrosion cause loss.Therefore, various metal erosion means of defences cause the concern of people.Conventional at present smears anti-
Rust oils and fatss are owned by France in contact antirust, and not only technique is loaded down with trivial details, take bothersome, effect on driving birds is not good, and also needs to be carried out before unpacking
Cleaning by degreasing operation, easily causes the secondary pollution of environment, and turning, the gap portion for not reaching antirust oil for those
Position, then can not form effective corrosion protection, and this method increasingly can not be received by people.Using vacuum-packing method then into
This is higher, and the extremely difficult reality for large-scale workpiece.Although desiccant antirust cost is relatively low, easy to use, effectively
Time is shorter and affected by environment larger, effect it is difficult to ensure that.
Vapour phase inhibitor (abbreviation of VCI, Volatile Corrosion Inhibitor) is the special synthesis techniques of Jing, answers
With a kind of corrosion inhibitor being prepared from.It individually or can depend on suitable carrier, at normal temperatures and pressures direct gasification.
Cause in any spatial gaps in operation unit, can all fill and contain by itself adjustable persistently volatilization in sealed environment
There are the mixed gas of the VCI antirust factors, this gas can adsorb thereon when meeting with metal surface, form only one of which or several points
Sub thick fine and close protection film layer.The protection film layer can effectively completely cut off moisture, oxygen and other hazardous atmospheres and metal surface is connect
Tactile property corrosion, suppresses the electrochemical reaction of metal erosion, so as to reach optimal anti-corrosion effect.With traditional rust-proofing method phase
Than VCI materials have many unrivaled advantages.Such as after the completion of metal material is packed or sprayed, vapor phase corrosion inhibitor agent molecule
Just diverging is started, vapor phase corrosion inhibitor agent molecule may penetrate into the corner space that traditional antirust oil cannot be covered, and antirust is without dead angle；Gas phase
Inhibition molecule effective ingredient retention time is long, and can extend protective period limit；There are moisture or outside air very moist in metal surface
Under conditions of, corrosion inhibiter also can form protecting film and prevent rust corrosion in metal surface.The volatile rust prevention product master for commonly using at present
There are volatile rust preventive oil, volatile rust prevention powder, volatile rust preventive paper and gas-phase antirusting film.Volatile rust preventive oil is added by base oil and auxiliary
Plus agent composition, when using need smear, remove overcoat when it is time-consuming, take a lot of work, it is both unhygienic or dangerous.Volatile rust prevention powder is then needed
Pack and use, antirusting powder is scattered and causes damage after bag breakage.Volatile rust preventive paper toughness is bad, easy breakage, and
The easy moisture absorption in surface, oil suction, cause to pack effect decline, affect antirust function.Although gas-phase antirusting film have it is transparent, flexible,
Can machine-shaping, the features such as barrier is high, but containing the strong carcinogen nitrous acid for disabling in the world in vapour phase inhibitor component
Vapour phase inhibitor is added directly into into blown film in resin, vapour phase inhibitor in salt, and technique disclosed in CN01127534.0
Grain skewness, gained membrane product occurs rough surface and crystallization phenomenon；And will be coated with after corrosion inhibiter and bonding agent mixing
Method on plastic sheeting, then energy consumption is big and complex procedures, can not clean manufacturing, easily affects to prevent because mixing uneven
Rust effect.
It can thus be seen that developing a kind of all with excellent rust-proof effect and friendly with environment to various many metals
Good, volatile rust preventive material easy to operate, to solving the problems, such as that the corrosion of metal for being related to national economy seems particularly urgent.Papery is fine
Dimension plate is that a kind of wide material sources, degradable inexpensive carrier material, and this material do not allow cracky, and size and dimension can be with
Arbitrarily adjustment, with very high water absorbing properties, has higher load capacity to volatile rust prevention liquid, it is ensured that prolonged gas phase
Rust-proof effect.Yet there are no based on the gas-phase rustproof packaging material of paper fiber, especially yet there are no based on cocos nucifera oil acidic group hydroxyl
The report of the volatile rust prevention papery fibre board packaging material of ethyl imidazol(e) quinoline and phytic acid compound corrosion inhibitor and preparation method thereof.
The content of the invention：
It is an object of the invention to solve deficiency of the prior art, there is provided a kind of cocos nucifera oil acidic group hydroxyethyl imidazole quinoline gas phase
Antirust fibre board and preparation method thereof.
For achieving the above object, a kind of cocos nucifera oil acidic group hydroxyethyl imidazole quinoline volatile rust prevention fibre board that the present invention is provided, its
It is characterised by that it includes paper fiber basal layer and gas phase antirust coat, wherein volatile rust prevention layer is applied by coating machine, will
Compound recipe vapour phase inhibitor aqueous dispersions adsorb in paper fiber plate surface, without the need for adding any binding agent；Described volatile rust prevention
The preparation method of fibre board, it is characterised in that including step in detail below：Compound recipe vapour phase inhibitor is dissolved in deionized water, is used
It is 8.0-9.0 or so that ammonia adjusts pH value, is configured to certain density vapour phase inhibitor aqueous dispersions；Using coating machine by gas
Phase corrosion inhibitor aqueous solution is coated in two surfaces of paper fiber, and air drying obtains cocos nucifera oil acidic group hydroxyethyl imidazole quinoline
Volatile rust prevention fibre board.
Preferably, the paper fiber is the degradation material that thickness is about 3-15mm；Volatile rust prevention layer is fine in papery
Load capacity on dimension plate is about 10-80g/m2。
Preferably, the preparation method of described a kind of cocos nucifera oil acidic group hydroxyethyl imidazole quinoline volatile rust prevention fibre board, its feature
The mass concentration for being vapour phase inhibitor aqueous dispersions is 5%-70%；The compound recipe vapour phase inhibitor is by cocos nucifera oil acidic group hydroxyl second
Base imidazoline, phytic acid, decanedioic acid sodium, sodium benzoate, 2-methylimidazole, silicon dioxide are 3.2~4.5 in mass ratio：2.1~
3.5：1.3~2.3：1.3~2.4：1.5~2.5：0.8~1.5 ratio is mixed；
Preferably, the silicon dioxide is aerosil, and its particle diameter is less than 80nm；In the compound recipe vapour phase inhibitor
Cocos nucifera oil acidic group hydroxyethyl imidazole quinoline, phytic acid, decanedioic acid sodium, sodium benzoate and 2-methylimidazole act primarily as the effect of volatile rust prevention,
Above-mentioned five kinds of corrosion inhibiter can be equably supported on its surface by aerosil as adjuvant, increase its specific surface area, be carried
High vapor phase corrosion inhibitor performance.
The beneficial effects are mainly as follows：A kind of cocos nucifera oil acidic group hydroxyethyl imidazole quinoline volatile rust prevention fiber is provided
Plate, first by cocos nucifera oil acidic group hydroxyethyl imidazole quinoline and phytic acid, decanedioic acid sodium, sodium benzoate, four kinds of vapor phase corrosion inhibitors of 2-methylimidazole
Agent is combined, and for preparing volatile rust prevention fibre board, imidazoline molecule has excellent vapor phase corrosion inhibitor performance, and the N and O in molecule is former
Son can form coordinate bond with the unoccupied orbital of metal；And contain 6 electronegative phosphate groups in phytate molecule, metal is had
Very strong sequestering power, after being combined with a kind of other corrosion inhibiter components, by the mutual synergistic effects for producing, strengthens its gas phase
Rustless property.The vapour phase inhibitor aqueous dispersions for being used are first to be sufficiently mixed compound recipe corrosion inhibiter uniformly, be subsequently adding from
Sub- water is sufficiently stirred for, and the vapour phase inhibitor for making solubility is evenly distributed on the little aerosil molecule table of dissolubility
Face, it is coated after can increase the specific surface area of volatile rust prevention fibreboard surface volatile rust prevention layer, and the high-hydroscopicity papery for adopting
Fibre board can improve compounding vapour phase inhibitor load capacity；Volatile rust prevention fibre board can designed size and thickness as requested, make
Be easy to after remove, compounding vapour phase inhibitor in do not contain the harmful constituents such as nitrite, use it is easier, efficient,
Environmental protection and safety.
Specific embodiment：
To further understand the present invention, with reference to embodiment, the invention will be further described, but not with any side
Formula limits the present invention.
The preparation method that volatile rust prevention fibre board in following embodiments is adopted includes step in detail below：
Embodiment 1：
By compound recipe corrosion inhibiter cocos nucifera oil acidic group hydroxyethyl imidazole quinoline, phytic acid, decanedioic acid sodium, sodium benzoate, 2-methylimidazole, two
Silicon oxide is 3.4 in mass ratio：2.5：1.5：1.7：1.8：1.0 ratio is sufficiently mixed uniformly, is scattered in deionized water
In, it is 8.0-9.0 or so to adjust pH value with ammonia, is configured to the vapour phase inhibitor aqueous dispersions that mass concentration is 20%；Using
Vapour phase inhibitor aqueous solution is coated in coating machine two surfaces of the paper fiber that thickness is 6mm, and air drying is obtained
Load capacity is about 20g/m2Volatile rust prevention fibre board a.
Embodiment 2：
By compound recipe corrosion inhibiter cocos nucifera oil acidic group hydroxyethyl imidazole quinoline, phytic acid, decanedioic acid sodium, sodium benzoate, 2-methylimidazole, two
Silicon oxide is 3.6 in mass ratio：2.8：1.8：1.9：2.0：0.9 ratio is sufficiently mixed uniformly, is scattered in deionized water
In, it is 8.0-9.0 or so to adjust pH value with ammonia, is configured to the vapour phase inhibitor aqueous dispersions that mass concentration is 30%；Using
Vapour phase inhibitor aqueous solution is coated in coating machine two surfaces of the paper fiber that thickness is 9mm, and air drying is obtained
Load capacity is about 30g/m2Volatile rust prevention fibre board b.
Embodiment 3：
By compound recipe corrosion inhibiter cocos nucifera oil acidic group hydroxyethyl imidazole quinoline, phytic acid, decanedioic acid sodium, sodium benzoate, 2-methylimidazole, two
Silicon oxide is 3.8 in mass ratio：2.8：1.7：1.5：2.0：1.2 ratio is sufficiently mixed uniformly, is scattered in deionized water
In, it is 8.0-9.0 or so to adjust pH value with ammonia, is configured to the vapour phase inhibitor aqueous dispersions that mass concentration is 40%；Using
Vapour phase inhibitor aqueous solution is coated in coating machine two surfaces of the paper fiber that thickness is 9mm, and air drying is obtained
Load capacity is about 40g/m2Volatile rust prevention fibre board c.
Embodiment 4：
By compound recipe corrosion inhibiter cocos nucifera oil acidic group hydroxyethyl imidazole quinoline, phytic acid, decanedioic acid sodium, sodium benzoate, 2-methylimidazole, two
Silicon oxide is 4.2 in mass ratio：3.2：1.5：1.7：2.2：0.9 ratio is sufficiently mixed uniformly, is scattered in deionized water
In, it is 8.0-9.0 or so to adjust pH value with ammonia, is configured to the vapour phase inhibitor aqueous dispersions that mass concentration is 50%；Using
Vapour phase inhibitor aqueous solution is coated in coating machine two surfaces of the paper fiber that thickness is 12mm, and air drying is obtained
It is about 50g/m to load capacity2Volatile rust prevention fibre board d.
Comparative example 1：
In mass ratio it is 2.8 by compound recipe corrosion inhibiter phytic acid, decanedioic acid sodium, sodium benzoate, 2-methylimidazole, silicon dioxide：
1.8：1.9：2.0：0.9 ratio is sufficiently mixed uniformly, and in being scattered in deionized water, it is 8.0- to adjust pH value with ammonia
9.0 or so, it is configured to the vapour phase inhibitor aqueous dispersions that mass concentration is 30%；Using coating machine by vapour phase inhibitor aqueous solution
Two surfaces of the paper fiber that thickness is 9mm are coated in, air drying obtains load capacity and is about 30g/m2Gas phase prevent
Rust fibre board b1.
Comparative example 2：
By compound recipe corrosion inhibiter cocos nucifera oil acidic group hydroxyethyl imidazole quinoline, decanedioic acid sodium, sodium benzoate, 2-methylimidazole, titanium dioxide
Silicon is 3.6 in mass ratio：1.8：1.9：2.0：0.9 ratio is sufficiently mixed uniformly, in being scattered in deionized water, uses ammonia
It is 8.0-9.0 or so to adjust pH value, is configured to the vapour phase inhibitor aqueous dispersions that mass concentration is 30%；Will using coating machine
Vapour phase inhibitor aqueous solution is coated in two surfaces of the paper fiber that thickness is 9mm, and air drying obtains load capacity about
For 30g/m2Volatile rust prevention fibre board b2.
Comparative example 3：
Compound recipe corrosion inhibiter cocos nucifera oil acidic group hydroxyethyl imidazole quinoline, phytic acid, decanedioic acid sodium, sodium benzoate, 2-methylimidazole are pressed
Mass ratio is 3.6：2.8：1.8：1.9：2.0 ratio is sufficiently mixed uniformly, in being scattered in deionized water, is adjusted with ammonia
PH value is 8.0-9.0 or so, is configured to the vapour phase inhibitor aqueous dispersions that mass concentration is 30%；Using coating machine by gas phase
Corrosion inhibiter aqueous solution is coated in two surfaces of the paper fiber that thickness is 9mm, and air drying obtains load capacity and is about
30g/m2Volatile rust prevention fibre board b3.
The application effect test example of embodiment 5
The measure of corrosion inhibition rate, concrete grammar are carried out to volatile rust prevention fibre board prepared by embodiment 1-4 and comparative example 1-3
For：The 45# carbon steel coupons of 30nm × 30nm × 3nm are polished smooth step by step with the sand paper of 180#~240#, deionized water cleaning
Totally, with drying after cotton ball soaked in alcohol defat.The volatile rust prevention fibre board prepared with embodiment 1-4 and comparative example 1-3 will polish
Good 45# carbon steels test piece sandwiches, then the test piece decussation sandwiched with nylon rope binds, be positioned over temperature for (49 ±
1) DEG C, relative temperature is about in 95 climatic chamber.Its corrosion degree is observed after 40 days and oxidation rate and corrosion inhibition rate is calculated：
η=100 × (Δ m0- Δ m1)/Δm0, in formula η be corrosion inhibition rate (%), Δ m0For blank assay medium carbon steel test piece
Mass loss (g), Δ m1To sandwich the mass loss (g) of volatile rust prevention fibre board medium carbon steel test piece.The results are shown in Table 1.
Prepare to embodiment 1-4, the volatile rust prevention fibre board of comparative example 1-3 preparation and by certain external vapor phase corrosion inhibitor liquid
Volatile rust prevention fibre board carries out many metal vapor phase rust-proofing performance tests, and test standard is with reference to GB/T 19532-2004, result of the test
It is shown in Table 1.
Selected from external volatile rust prevention liquid like product market price higher than compound recipe vapour phase inhibitor two of the present invention in table 1
To three times.Comparative test result shows that volatile rust prevention fibre board of the present invention is better than to the rust-proof effect of various metals
The selected volatile rust prevention fibre board prepared by external volatile rust prevention liquid, and volatile rust prevention effect is far superior to comparative example 1-3
The volatile rust prevention fibre board of gained, the wherein best results of embodiment 1 and 2, are the preferred embodiment of the present invention.And implement
The product gas phase rust-proof effect of example 1-4 is substantially better than the sample of comparative example 1-3, shows cocos nucifera oil acidic group hydroxyethyl imidazole quinoline, plants
Acid and aerosil have important effect in terms of volatile rust prevention, and wherein aerosil is due to its big specific surface
Product so that vapour phase inhibitor is evenly dispersed in nanoparticle surface, increases its volatility, improves vapor phase corrosion inhibitor performance.This
Invent the volatile rust prevention fibre board price only has same kind of products at abroad 1/2nd or 1/3rd, and have no toxic side effect,
It is free from environmental pollution, meet national environmental standard requirement, imported product can be replaced completely.Think their vapor phase corrosion inhibitor machine
Managing to be：The corrosion inhibiter of volatile rust prevention fibreboard surface evaporate into metal surface, wherein cocos nucifera oil acidic group hydroxyethyl imidazole quinoline, plant
Acid, decanedioic acid sodium, sodium benzoate and 2-methylimidazole are attached to metal surface, the phosphate groups and metal watch in phytate molecule
The atom in face is chelated, and the N and O atom in other inhibitor moleculars contains lone pair electrons, can be with the d electronics unoccupied orbitals of Fe
Formed coordinate bond, there occurs chemisorbed, make compound corrosion inhibitor form firm adsorbed film in metal surface, with suppress oxygen and
Contact of the water to metal surface；Additionally, due to adsorption of the fibre board to corrosion inhibiter so that corrosion inhibiter is slowly released, both
Having played good rust-proof effect can extend its antirust time again.
Table 1 is volatile rust prevention result of the test.
Claims (4)
1. a kind of cocos nucifera oil acidic group hydroxyethyl imidazole quinoline volatile rust prevention fibre board, it is characterised in that it includes paper fiber basal layer
With gas phase antirust coat, wherein volatile rust prevention layer is applied by coating machine, and compound recipe vapour phase inhibitor aqueous dispersions are adsorbed in paper
Matter fibreboard surface, without the need for adding any binding agent；The system of described cocos nucifera oil acidic group hydroxyethyl imidazole quinoline volatile rust prevention fibre board
Preparation Method, it is characterised in that including step in detail below：Compound recipe vapour phase inhibitor is dissolved in deionized water, with ammonia pH is adjusted
It is worth for 8.0-9.0 or so, is configured to certain density vapour phase inhibitor aqueous dispersions；Using coating machine by compound recipe vapor phase corrosion inhibitor
Agent aqueous solution is coated in two surfaces of paper fiber, and air drying obtains cocos nucifera oil acidic group hydroxyethyl imidazole quinoline gas phase and prevents
Rust fibre board.
2. a kind of cocos nucifera oil acidic group hydroxyethyl imidazole quinoline volatile rust prevention fibre board according to claim 1, it is characterised in that institute
State the degradation material that paper fiber is that thickness is about 3-15mm；Load capacity of the volatile rust prevention layer on paper fiber is about
For 10-80g/m2。
3. the preparation method of a kind of cocos nucifera oil acidic group hydroxyethyl imidazole quinoline volatile rust prevention fibre board according to claim 1, its
The mass concentration for being characterised by vapour phase inhibitor aqueous dispersions is 5%-70%；The compound recipe vapour phase inhibitor is by cocos nucifera oil acidic group
Hydroxyethyl imidazole quinoline, phytic acid, decanedioic acid sodium, sodium benzoate, 2-methylimidazole, silicon dioxide are 3.2~4.5 in mass ratio：2.1
~3.5：1.3~2.3：1.3~2.4：1.5~2.5：0.8~1.5 ratio is mixed.
4. the preparation method of a kind of cocos nucifera oil acidic group hydroxyethyl imidazole quinoline volatile rust prevention fibre board according to claim 3, its
It is characterised by that the silicon dioxide is aerosil, its particle diameter is less than 80nm；Coconut oil in the compound recipe vapour phase inhibitor
Base hydroxyethyl imidazole quinoline, phytic acid, decanedioic acid sodium, sodium benzoate and 2-methylimidazole, the effect for acting primarily as volatile rust prevention, gas phase two
Above-mentioned five kinds of corrosion inhibiter can be equably supported on its surface by silicon oxide as adjuvant, increase its specific surface area, improve gas phase
Corrosion inhibition.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710011571.9A CN106676535A (en) | 2017-01-07 | 2017-01-07 | Oleic acid radical hydroxyethyl imidazoline vapor-phase rustproof fiber board and preparing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710011571.9A CN106676535A (en) | 2017-01-07 | 2017-01-07 | Oleic acid radical hydroxyethyl imidazoline vapor-phase rustproof fiber board and preparing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110819993A (en) * | 2019-11-18 | 2020-02-21 | 黄山学院 | Long-acting corrosion inhibitor for solid chlorine salt snow-melting agent and preparation method thereof |
-
2017
- 2017-01-07 CN CN201710011571.9A patent/CN106676535A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110819993A (en) * | 2019-11-18 | 2020-02-21 | 黄山学院 | Long-acting corrosion inhibitor for solid chlorine salt snow-melting agent and preparation method thereof |
| CN110819993B (en) * | 2019-11-18 | 2021-12-07 | 黄山学院 | Long-acting corrosion inhibitor for solid chlorine salt snow-melting agent and preparation method thereof |
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Application publication date: 20170517 |