CN106220074A - A kind of for Marine reinforced concrete structure antiseptical fungicidal paint and coating processes thereof - Google Patents
A kind of for Marine reinforced concrete structure antiseptical fungicidal paint and coating processes thereof Download PDFInfo
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- CN106220074A CN106220074A CN201610533002.6A CN201610533002A CN106220074A CN 106220074 A CN106220074 A CN 106220074A CN 201610533002 A CN201610533002 A CN 201610533002A CN 106220074 A CN106220074 A CN 106220074A
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- coating
- mass parts
- concrete
- sterilization
- antiseptical
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Classifications
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/5079—Portland cements
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
Abstract
The invention discloses a kind of for Marine reinforced concrete structure antiseptical fungicidal paint and coating processes thereof.With portland cement as matrix material, magnesium titanate is photo-catalyst material, and mixes sand, mixes with water, is uniformly mixing to obtain sterilization and anticorrosion coating.The advantages such as it is extensive that the present invention has raw material sources, and cost is relatively low, and technique is simple, bactericidal property efficient stable.
Description
Technical field
The invention belongs to the inorganic coating field for concrete structural surface, particularly relate to a kind of mixed for ocean reinforcing bar
Solidifying soil antiseptical fungicidal paint and coating processes thereof.
Background technology
Entering 21 century, China has marched toward the epoch of coastal economy great development, it is anticipated that in following one period
Large quantities of sea port dock, Oversea bridge, tunnel, offshore production platform etc. will be had to use xoncrete structure.The concrete knot in Lang Jian district
Structure owing to standing the beating repeatedly of wind, Exposure to Sunlight and wave for a long time, the top layer of xoncrete structure easily accumulate substantial amounts of bacterium colony and
Microorganism.The most effectively stop these bacterium colonies and the microorganism corrosion failure to xoncrete structure, the most gradually cause vast section
Grind the attention of worker, and one of become the emphasis of academia research.Therefore, development and utilization new material, new technique solve mixed
The etching problem of Xtah Crude Clay structure is one of the most urgent task of facing of current field of civil engineering scientific worker.
In terms of biological corrosion, T-sulfur oxidizing bacterium, Thiobacillus X, to bite the biological sulfuric acid corrosion that silicon bacterium causes be one of which
Common concrete erosion, its detailed process is: the organic and mineral suspensions in environment water along with water body flowing and by
The surface being gradually deposited on xoncrete structure becomes attachment, and the sulfate ion in attachment is reduced by sulfur reducing bacteria, generates sulfur
Change hydrogen.Meanwhile, hydrogen sulfide gas is by complicated biochemical reaction, and oxidation generates acid stronger sulphuric acid, thus drops
The pH value of low surrounding.The hydrion of sulfuric acid dissolution release is by diffusing into the inside of concrete, and and inside concrete
Bar construction contact, thus there is the corrosion of concrete and reinforcing bar, the safety of concrete building structures in serious threat.Mesh
Front conventional sterilization material is nano titanium oxide, and owing to nano titanium oxide can be carried out " light-catalyzed reaction ", it is by light
After exciting, produce chemical energy, utilize the chemical energy produced to carry out redox reaction.Light-catalysed ultimate principle is to utilize to receive
Rice titanium dioxide is as catalysis material, under the light radiation of specific wavelength, produces oxidisability pole on nano titanium oxide surface
Strong hole or reactive high hydroxyl radical free radical.These holes or free radical can effectively with organic pollution, virus,
Antibacterial comes in contact and is combined and produces strong destruction, causes organic pollution to be degraded, and virus is killed with antibacterial,
Thus reach environmental contaminants of degrading, bactericidal and antiseptical purpose.But nano titanium oxide be limited by its preparation technology and
The impact of production capacity and the potential hazard to human body, it would be highly desirable to develop a kind of novel substitute products, be applied to be unsuitable for using
In the antiseptic concrete technique of nano titanium oxide.
It addition, current prior art has existed many reinforced concrete block method of inhibiting corrosion.Such as Application No.
The patent of invention of 201310232855.2 discloses a kind of anticorrosion building concrete, including cement and admixture, also has anti-
Rotten agent and dispersant.The anticorrosion building concrete of this invention is by making isobutyl triethoxy silane penetrate in concrete
Hydrone generation chemical reaction in portion, with the air being exposed in acidity or alkaline environment and substrate, is formed and scolds water to process layer,
Thus suppress moisture to enter in substrate.It must be when preparing concrete mortar, will preservative and dispersant addition raw material
In, and cannot use in type concrete block.The patent of invention of Application No. 201510550106.3 discloses one
Modified propylene acid coated antiseptic concrete method, comprises the steps: coating test；Scaffold building；The cleaning of concrete；Mixed
The polishing of solidifying soil；The repairing of concrete is levelling；Brushing acrylic resin seal coat；Brushing acrylic resin finish paint；Maintenance.Should
Inventive nature is by acrylic resin seal coat and finish paint, forms strong protective barrier together, resistance at concrete surface
Dash and carbon dioxide enter concrete block.But the method can not it acts on to long period of soaking concrete block in water, because of
Antibacterial for its surface still cannot be killed, and is easily accessible inside and reinforcing bar is caused erosion.
Summary of the invention
It is an object of the invention to solve problems of the prior art, and provide a kind of novel for ocean reinforcing bar
The fungicidal paint of antiseptic concrete and coating processes thereof, the sterilization and anticorrosion brought in sea water to meet concrete to be soaked in for a long time
Requirement.Concrete technical scheme of the present invention is as follows:
For Marine reinforced concrete structure antiseptical fungicidal paint, raw material comprises: magnesium titanate 20-35 mass parts, silicate cement
Mud 20-40 mass parts, sand 30-50 mass parts.
A kind of coating processes of sterilization and anticorrosion coating, step is as follows:
Dry mixing is obtained after the portland cement stirring of the magnesium titanate of 20-35 mass parts, 20-40 mass parts, mix homogeneously
Material A；In dry mixing material A, add suitable quantity of water, be sufficiently mixed and uniformly obtain mixture B, after mixture B machine mixing, continue
Stirring, pours the sand of 30-50 mass parts in mixture B together with the water of 4-6 mass parts again, continues mix and forms coating
C；Pick coating C, be evenly applied to designed concrete block surface maintenance molding.
In technique scheme, magnesium titanate, as catalysis material, can produce hydroxyl under the light radiation of specific wavelength
Free radical, thus reach bactericidal and antiseptical purpose.Portland cement and sand have then played the effect of binding agent, by metatitanic acid
Magnesium is coated on Marine reinforced concrete structure surface, thus it can be prevented that the biological sulfuric acid corrosion that microorganism causes, in keeping concrete
The safety of structure of portion's reinforcing bar.
As preferably, the watering before coating coating of described designed concrete block is moistening, enable coating material to stablize,
It is fixed on concrete block outer surface for a long time.
As preferably, described sand crosses 80 eye mesh screens in advance.It addition, the weight ratio of described dry mixing material A and water is (2-
4): 1.The mesh number of sand and the consumption of water can affect the bond properties of coating, and under above-mentioned parameter, its bond properties is preferable.But for
Concrete environment, can determine corresponding proportion and parameter according to test.
As preferably, described maintenance molding is specially to be statically placed in normal temperature air the concrete block after coating and is frozen into
Type.
The photocatalysis anticorrosive paint of the present invention, magnesium titanate, can be bright by suppressing the growth of antibacterial as catalysis material
The aobvious corrosion potential improving concrete component, thus slow down biological sulphuric acid to concrete structure erosion and destruction.In the present invention
Portland cement and sand, as binding agent, have cooperative effect with magnesium titanate, further inhibit the growth of antibacterial.The present invention
The advantages such as having raw material sources extensive, cost is relatively low, and technique is simple, bactericidal property efficient stable.The present invention is suitable for for a long time
The sterilization and anticorrosion of the marine concrete structure being soaked in sea water.
Accompanying drawing explanation
Fig. 1 is that the corrosion potential of the embodiment of the present invention 3 empty matched group and experimental group changes over figure.
Detailed description of the invention
With detailed description of the invention the present invention it is further elaborated below in conjunction with the accompanying drawings and illustrates.In the present invention, each is implemented
The technical characteristic of mode, on the premise of not colliding with each other, all can carry out respective combination.
Comprise for Marine reinforced concrete structure antiseptical fungicidal paint raw material: magnesium titanate 20-35 part, portland cement 20-
40 parts, sand 30-50 part (being mass parts).The coating processes of sterilization and anticorrosion coating, step is as follows:
Pretreatment: sand crosses 80 eye mesh screens, and concrete test block watering is moistening.
Being dry mixed: the magnesium titanate that will weigh by component ratio, portland cement pours container into, is placed in batch mixer stirring 10 points
Clock, mix homogeneously obtains dry mixing material A.
Wet mixing: add suitable quantity of water in dry mixing material A, dry mixing material A is (2-4) with the weight ratio of water: 1, is placed in batch mixer
It is sufficiently mixed and uniformly obtains mixture B.After machine mixing 3 minutes, continue stirring, the most again load weighted sand and (4-
6) during part water pours mixture B together into, continue mix 2 minutes, form coating C；
Coating: moistening for the watering of preprepared concrete test block, pick coating C with rotary broom, be evenly applied to mix
Solidifying soil surface, forms test block D.
Maintenance: test block D be statically placed in normal temperature air 24 as a child after coagulation forming.
Following embodiment 1-3 is respectively the preparation of fungicidal paint:
Embodiment 1
Pretreatment: sand crosses 80 eye mesh screens, and concrete test block watering is moistening.
Being dry mixed: the 30 parts of magnesium titanates that will weigh, 31 parts of portland cements pour container into, are placed in batch mixer stirring 10 points
Clock, obtains dry mixing material A.
Wet mixing: according to A: the weight ratio of water=3:1, adds 20.3 parts of water in dry mixing material A, is placed in batch mixer the most mixed
Close and uniformly obtain mixture B.After machine mixing 3 minutes, stirring, the most again load weighted 39 parts of sand together with 4 parts of water
Pour in mixture B, continue mix 2 minutes, form coating C；
Coating: pick coating C with rotary broom, be evenly applied to concrete surface.
Maintenance: test block is statically placed in normal temperature air coagulation forming after 24 hours.
Embodiment 2
Pretreatment: sand crosses 80 eye mesh screens, and concrete test block watering is moistening.
Being dry mixed: the 25 parts of magnesium titanates that will weigh, 28 parts of portland cements pour container into, are placed in batch mixer stirring 7 minutes,
Obtain dry mixing material A.
Wet mixing: according to A: the weight ratio of water=2:1, adds 26.5 parts of water in dry mixing material A, is placed in batch mixer the most mixed
Close and uniformly obtain mixture B.After machine mixing 3 minutes, stirring, the most again load weighted 47 parts of sand together with 4 parts of water
Pour in mixture B, continue mix 2 minutes, form coating C；
Coating: pick coating C with rotary broom, be evenly applied to concrete surface.
Maintenance: test block is statically placed in normal temperature air coagulation forming after 24 hours.
Embodiment 3
Pretreatment: sand crosses 80 eye mesh screens, and concrete test block watering is moistening.
Being dry mixed: the 33 parts of magnesium titanates that will weigh, 33 parts of portland cements pour container into, are placed in batch mixer stirring 7 minutes,
Obtain dry mixing material A.
Wet mixing: according to A: the weight ratio of water=2.5:1, adds 23.2 parts of water in dry mixing material A, is placed in batch mixer fully
Mix homogeneously obtains mixture B.After machine mixing 3 minutes, stirring, the most again load weighted 42 sand together with 4 parts of water
Pour in mixture B, continue mix 2 minutes, form coating C；
Coating: pick coating C with rotary broom, be evenly applied to concrete surface.
Maintenance: test block is statically placed in normal temperature air coagulation forming after 24 hours.
The effect of coating and painting method in order to verify the present invention, has carried out OCP test and photo-catalyst is real
Test.The test result of the concrete block prepared by above-described embodiment 1-3 is essentially identical, for brevity, below with embodiment 3
As a example by be illustrated.Its concrete grammar and result are as follows:
1) OCP test
Take two experimental grouies, often two parallel concrete test blocks (40*40*40mm) of group respectively.First group right as blank
According to group, two test blocks do not coat coating of the present invention (UC-01/02).Second group as experimental group, two test blocks uniformly coat this
The photocatalysis anticorrosive paint (C-01/02) of invention.Each test block is placed individually in four seal cups, and pours 400ml into carefully
The sewage of bacterium (T-sulfur oxidizing bacterium, Thiobacillus X, bite silicon bacterium), and be irradiated with daylight lamp.Every day, test block, electricity consumption were taken out in timing
Chem workstation does OCP test.Test result is as shown in Figure 1.
It is known that corrosion potential is the highest, it is less susceptible to corrosion.Starting stage in being soaked in sewage, corrosion potential
Fluctuation is very big, and corrosion potential is often carried out towards the direction (direction i.e. corroded) that numerical value diminishes.Along with soak time is got over
The longest, the fluctuation of corrosion potential is more and more less, and final corrosion potential trends towards a stable numerical value.
Schemed by test it is found that be coated with two concrete sample (C-01/ of the photocatalysis anticorrosive paint of the present invention
02) corrosion potential is interval between-300-400mV, hence it is evident that higher than the two of the photocatalysis anticorrosive paint not coating the present invention
Individual concrete sample (UC-01/02) corrosion potential-650-750mV, both reach about 250mV at potential difference.So the present invention
Photocatalysis anticorrosive paint can be by suppressing the growth of antibacterial, hence it is evident that improve the corrosion potential of concrete component, thus slow down
Biological sulphuric acid is to concrete structure erosion and destruction.
2) photo-catalyst experiment
Preparing experiment test block: concrete test block (40*40*5mm) is divided into two groups, blank group concrete test block does not do to be located
Reason, coating of the present invention is smeared on experimental group concrete test block surface (40*40mm).
Treating excess syndrome is tested and is positioned in culture dish with test block, and 40*40mm faces up, the battalion with bacterium colony good for configured in advance
Nutrient solution is poured in test block, uses ultraviolet light to be irradiated on the liquid with bacterium colony, after a while, takes a certain amount of band bacterium colony liquid
Body drips on aseptic flat board, and counts under the microscope.Number with colony counts judges the power of coating sterilizing ability.
Colony counts is the fewest, then represent sterilizing ability the strongest.
Supplementary notes: 1, (inherently have the strongest bactericidal action due to ultraviolet, if using the ultraviolet that energy is stronger
Lamp, can cover the photo-catalyst effect of coating test piece of the present invention, and therefore medium excitation wavelength 365nm, medium is selected in this experiment
The ultraviolet light of power 20W is as photocatalysis excitation source) 2, due to bacterium colony kind large number of, this experimental selection causes biology
Three kinds of antibacterials of sulfuric acid corrosion are as experimental bacteria: T-sulfur oxidizing bacterium, Thiobacillus X, bite silicon bacterium.
Table 1 T-sulfur oxidizing bacterium culture fluid is tested
Table 2 Thiobacillus X culture fluid is tested
The test of silicon bacteria culture fluid bitten by table 3
Note: unit cfu/ml: refer to the bacterial community sum contained in every milliliter of sample
As seen from the above table after the ultraviolet irradiation of 35 minutes, the viable bacteria bacterium amount in four kinds of coating test blocks reduces respectively
To 0.50,0.67,0.55, the 31.6%, 36.8%, 34.2% of the most former viable bacteria bacterium amount,.But trying without coating as comparison
Viable bacteria bacterium amount on block remains within 1.5-1.8.Illustrate that coating specimens can effectively kill flora.
Embodiment described above is the one preferably scheme of the present invention, and so it is not intended to limiting the invention.Have
Close the those of ordinary skill of technical field, without departing from the spirit and scope of the present invention, it is also possible to make various change
Change and modification.The technical scheme that the most all modes taking equivalent or equivalent transformation are obtained, all falls within the guarantor of the present invention
In the range of protecting.
Claims (7)
1. one kind is used for Marine reinforced concrete structure antiseptical fungicidal paint, it is characterised in that raw material comprises: magnesium titanate 20-35 matter
Amount part, portland cement 20-40 mass parts, sand 30-50 mass parts.
2. the coating processes of a sterilization and anticorrosion coating, it is characterised in that step is as follows:
Dry mixing material A is obtained after the portland cement stirring of the magnesium titanate of 20-35 mass parts, 20-40 mass parts, mix homogeneously；
In dry mixing material A, add suitable quantity of water, be sufficiently mixed and uniformly obtain mixture B, after mixture B machine mixing, continue
Stirring, pours the sand of 30-50 mass parts in mixture B together with the water of 4-6 mass parts again, continues mix and forms coating
C；
Pick coating C, be evenly applied to designed concrete block surface maintenance molding.
3. the coating processes of sterilization and anticorrosion coating as claimed in claim 2, it is characterised in that described designed concrete block exists
Before coating coating, watering is moistening.
4. the coating processes of sterilization and anticorrosion coating as claimed in claim 2, it is characterised in that described sand crosses 80 mesh sieves in advance
Net.
5. the coating processes of sterilization and anticorrosion coating as claimed in claim 2, it is characterised in that described dry mixing material A and water
Weight ratio is (2-4): 1.
6. the coating processes of sterilization and anticorrosion coating as claimed in claim 2, it is characterised in that described maintenance molding is specially
Concrete block after coating is statically placed in coagulation forming in normal temperature air.
7. a magnesium titanate is for preparing the purposes of Marine reinforced concrete structure antiseptical fungicidal paint.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533002.6A CN106220074B (en) | 2016-06-30 | 2016-06-30 | One kind being used for Marine reinforced concrete structure corrosion-resistant fungicidal paint and its coating processes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533002.6A CN106220074B (en) | 2016-06-30 | 2016-06-30 | One kind being used for Marine reinforced concrete structure corrosion-resistant fungicidal paint and its coating processes |
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| CN106220074A true CN106220074A (en) | 2016-12-14 |
| CN106220074B CN106220074B (en) | 2018-08-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106892619A (en) * | 2017-03-23 | 2017-06-27 | 柳州弘天科技有限公司 | A kind of resistance to oxidation coating |
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| CN101346322A (en) * | 2005-10-28 | 2009-01-14 | 海格瑞特公司 | Corrosion resistant compositions for treatment of hardened concrete structures |
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| CN103936361A (en) * | 2014-03-24 | 2014-07-23 | 长安大学 | Polymer cement-based waterproof anti-corrosion coating material |
| CN104529300A (en) * | 2014-12-23 | 2015-04-22 | 广西启利新材料科技股份有限公司 | Geopolymer-base sea-base concrete protective coating |
| CN105601326A (en) * | 2015-12-28 | 2016-05-25 | 江苏苏博特新材料股份有限公司 | Inorganic anti-corrosive paint for underground sewage concrete pipeline, and preparation method of inorganic anti-corrosive paint |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1529768A (en) * | 2001-05-16 | 2004-09-15 | ����ʥ��ಣ���� | Substrate with photocatalytic coating |
| CN101346322A (en) * | 2005-10-28 | 2009-01-14 | 海格瑞特公司 | Corrosion resistant compositions for treatment of hardened concrete structures |
| CN103269993A (en) * | 2010-12-20 | 2013-08-28 | 路易斯安那理工大学研究基金会,路易斯安那理工大学基金会分公司 | Geopolymer mortar and method |
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| CN106892619A (en) * | 2017-03-23 | 2017-06-27 | 柳州弘天科技有限公司 | A kind of resistance to oxidation coating |
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| CN106220074B (en) | 2018-08-21 |
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