CN104404550B - Pre-treatment agent suitable for surface of outdoor steel structure, and preparation method for pre-treatment agent - Google Patents
Pre-treatment agent suitable for surface of outdoor steel structure, and preparation method for pre-treatment agent Download PDFInfo
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- CN104404550B CN104404550B CN201410690409.0A CN201410690409A CN104404550B CN 104404550 B CN104404550 B CN 104404550B CN 201410690409 A CN201410690409 A CN 201410690409A CN 104404550 B CN104404550 B CN 104404550B
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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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/088—Iron or steel solutions containing organic acids
Abstract
The invention discloses a pre-treatment agent suitable for the surface of an outdoor steel structure, and a preparation method for the pre-treatment agent. The pre-treatment agent comprises an individually packaged component A, an individually packaged component B and a component C of tap water; during use, the components A and B are mixed according to a given weight ratio, and then tap water is proportionally added to be mixed uniformly on site. The component A comprises deionized water, hydroxyethyl cellulose, a foam killer, a base material wetting agent, petroleum sodium sulfonate, hexamethylene tetramine, sodium dodecyl sulfonate, a fluorine surface active agent, an ethylene glycol butyl ether thickener and an in-tank bactericide; the component B comprises deionized water, hydrochloric acid, phosphoric acid, and tartaric acid. The agent can remove oil stain and rust on the metal surface after being applied to the steel structure surface in a coating manner, without artificial oil removing or rust removal; almost no solvent is volatilized, so that environmental pollution and insecure factors are avoided, and the labor intensity is reduced; the pre-treatment agent can be applied to the steel structure surface through a brushing, rolling or spraying manner to reduce the labor intensity and improve the working efficiency.
Description
Technical field
The present invention is to be related in domain of inorganic chemistry emulsion reaction in redox reaction and organic chemistry filed, specially
A kind of pretreating reagent for adapting to steel surface.It is related to a kind of preparation method of the pre- pretreating reagent for adapting to steel surface simultaneously.
Background technology
Iron and steel is used under the conditions of unprotected and storage causes corrosion, or is made as antirust agent in storing and the course of processing
Mineral oil, lubricating oil, corrosion can promote various corrosion products to spread under coating, make coating lose shielding, in high humidity
Under the conditions of cause the early damage of coating and metal, oils and fatss make coating adhesion degradation until coming off, affect coating
Dry, hardness and gloss etc..Coating to be ensured gives full play to protection and decorative effect, in addition to the quality of coating itself, before surface
Process is a most important link, is directly connected to the service life of coating.Analysis result according to statistics, in various factors to applying
In the impact in layer life-span, surface treatment quality accounts for 49.5%, and coating type (kind, composition) accounts for 4.9% [1].Difference is removed
Impact of the rust degree to coating performance is different, does not eliminate rust, and coating gets rusty situation to 60%；Hand cleaning, the coating situation of getting rusty are arrived
20%；Acid pickling and rust removing, coating get rusty situation to 15%；Sandblasting bonderizing, indivedual rust spots.In sum, it is surface-treated matter
Amount is application success or not, is the key link that can coating play its optimum efficiency.As can be seen here, surface pretreatment to close weight
Will.
At present, the pre-treating technology development for being adapted to the steel construction piece of application in factory is very ripe, and typical process is as follows：Root
Pickling (or alkali cleaning) oil removing can be carried out according to Factory Building condition --- rust cleaning --- washing --- surface adjustment --- phosphatization (or oxygen
Change) --- washing --- drying.Wiping oil removing can also be carried out --- sandblast.But the painting operation under the conditions of in the wild, it is impossible to
The one kind in above two method is realized, is relied on and manually oil removing is wiped repeatedly with solvent, eliminated rust with power tool polishing, work
Make efficiency low, a working day eliminates rust less than 100 square metres, and anthropic factor affects big, in application failure (anti-rust, decortication)
In case, 80% not performing to pre-treatment link.In addition, wiping oil removing, solvent is a kind of injury to operator, and in a large number
Solvent is evaporate in air, is a kind of pollution to environment.Under the form that the whole people advocate environmental protection and energy saving, this pre-treating technology shows
It is so to be eliminated.Under labour's worsening shortages, the constantly soaring form of painting cost, it is necessary to existing Coating Pretreatment
Technique is improved, and just adapts to development.
With the raising of people's health consciousness, traditional, falling behind, poisonous and hazardous pre-treating technology will be gradually backed out city
, need to develop and meet environmental requirement, little to health hazard, feature is projected, the premium quality product of convenient storage and transport；And
Degreasing and rust removal efficiency high is required, labor intensity is low, anthropic factor affects little.Therefore, develop the Water-borne modification of suitable field operation
Degreasing and rust removal pretreatment liquid, product do not contain organic volatile, do not contain heavy metal ion, pollution are not resulted in environment, both ring
Possess and conveniently, safely store the product of transport and become current this area technical problem urgently to be resolved hurrily.
The content of the invention
The invention provides a kind of pre- pretreating reagent for outdoor steel structure surface, the cost of material is low for the pretreating reagent,
Preparation method is simple, is easy to store, transports, easy to use；The product feature of environmental protection is high, without poisonous and harmful substance.It is adapted in the wild
Under the conditions of the application oil tank of operation, steel structure platform pretreating reagent, treatment effeciency is high, safety, environmental protection.
The purpose of the present invention is realized by following technical proposals.
A kind of pre- pretreating reagent for outdoor steel structure surface, including by weight 2: 1：1～1.2 ratio mixing
Component A, B component and C components：
Component A：
B component：
C components：
Clean tap water.
Further, the hydroxyethyl ether cellulose (HEC) is that Shandong Yu Tian Chemical Co., Ltd.s or the U.S. are sub- across imperial public
At least one of department HBR250.
Further, the defoamer is DX-48 or the BASF AG of the U.S. of Dow Chemical company limited
At least one of EFKA3239.
Further, the substrate wetting agents are PE-100 or the LG-DOW company limited of German Kening Co., Ltd
Twin 4100 is at least one.
Further, the thickening agent be Dow Chemical company limited ACRYSOLTMRM-2050D nonionics gather
At least one of non-ionic associative type polyurethane AD-13 of urethane association thickener or Guangzhou Ang Di Chemical Co., Ltd.s.
The PREVENTOL of F-111 or Dow Chemical company limited of the antibacterial for Taiwan Central Asia company in the tank
At least one of D7.
Correspondingly, the present invention gives a kind of preparation method of the pre- pretreating reagent for outdoor steel structure surface, should
Method comprises the steps：
(1) preparation of component A：
Deionized water of the parts by weight for 100-150 parts is mixed into shape transparent to liquid with 2-3 part hydroxyethyl celluloses
4 parts of butyl glycol ethers are added, 3-5min is stirred；Then 0.3-0.6 part defoamer, 0.1-0.4 part base material moistenings are sequentially added
Agent, 1.0-1.5 part petroleum sodium sulfonates, 3-5 part hexamethylenetetramines, 2-4 part sodium lauryl sulphates, mix 10-
15min；Antibacterial in 2-3 parts fluorosurfactant FC-4430 and 0.1-0.3 part tanks is added, 10min is stirred；Add
The thickening agent of 0.1-0.3 parts stirs, and control viscosity is in 120-130KU Stormer viscositys；Filter, obtain final product component A；
(2) preparation of B component：
It is the deionized water and 4-6 part tartaric acid, 20-30 parts phosphoric acid stirring 5min of 16-20 parts by parts by weight, adds
50-60 parts hydrochloric acid stirs 5min, obtains final product B component；
(3) C component tap waters are weighed；
(4) mixing of component：
During use, by weight ratio:Component A: B component：C component=2: 1：1～1.2 ratio mix homogeneously.
Further, in the step (1), transparence hydroxyethyl cellulose blender rotating speed is 1500r/min；Add second
During glycol butyl ether, blender rotating speed is 800r/min.
Further, in the step (1), thickening agent be with water it is dilute to 50% thickener soln.
Further, in the step (2), blender rotating speed is 300r/min.
A kind of pretreating reagent suitable for outdoor steel structure surface of the present invention compares other handling process with following excellent
Point：
1. emulsifying and pickling technology are adopted, the technique for realizing the outdoor method degreasing and rust removal using chemistry.
2. product is practically free of poisonous harmful class solvent, transport, storage, using safer, free from environmental pollution, category environmental protection
Class product.
3. fluorosurfactant is added, and degreasing and rust removal is more thorough, reduces the impact of manual operation factor.
4., without the need for manual oil removing and polishing, surface treatment effect reaches the effect of indoor pickling and sandblasting, degreasing and rust removal effect
Rate is high, is higher by more than 10 times than artificial degreasing and rust removal.
5. brushing, roller coat, spraying application can be adopted, labor intensity is reduced, is improved work efficiency.
Specific embodiment
Described below is the preferred embodiment of the present invention, and what the present invention was protected is not limited to the following side of being preferable to carry out
Formula, described case study on implementation are explanation of the invention rather than restriction.Point out simultaneously, for a person skilled in the art
On the basis of this innovation and creation design, some deformations made and improvement belong to protection scope of the present invention.
Embodiment 1
(1) preparation of component A：
In stainless cylinder of steel, by weight ratio, deionized water 100Kg is added, starts motor switch, rotating speed is adjusted to
800 turns/min, Shandong Yu Tian Chemical Co., Ltd.s hydroxyethyl ether cellulose (HEC) HBR250 2Kg are added, rotating speed is adjusted to
Rotating speed is down to 800 turns/min to the transparent shape of liquid by 1500 revs/min of stirring 5min, adds butyl glycol ether 5Kg, stirring
3min, sequentially adds DX-48 0.6Kg, the Kening Co., Ltd of substrate wetting agents Germany of defoamer Dow Chemical company limited
PE-100 0.4Kg, petroleum sodium sulfonate 1.0Kg, hexamethylenetetramine 5Kg, sodium lauryl sulphate 4Kg stirring 15min, add
The F-111 0.1Kg stirring 10min of antibacterial Taiwan Central Asia company in fluorosurfactant (FC-4430) 2Kg and tank, then
Addition water open it is dilute to 50% Dow Chemical company limited ACRYSOLTMRM-2050D non-ionic polyurethane association types
Thickening agent 0.1Kg stirs, and control viscosity is between 120KU (Stormer viscosity).After filtration, load clean plastics and open greatly
In mouth barrel, you can obtain component A.
(2) preparation of B component：
Add deionized water 18Kg by formula ratio in ceramic kettle or plastic containers, start motor switch, rotating speed is adjusted to into 300
Turn/min, after adding tartaric acid 6Kg, phosphoric acid 30Kg stirring 5min under agitation, add hydrochloric acid 60Kg stirring 5min, load little opening
In mouth Plastic Drum, B component is obtained.
During use by weight ratio:Component A: component B：Component C=2: 1：1 mix homogeneously.
Embodiment 2
(1) preparation of component A：
In stainless cylinder of steel, by weight ratio, deionized water 150Kg is added, starts motor switch, rotating speed is adjusted to
800 turns/min, Ya Kualong companies of hydroxyethyl cellulose (HEC) U.S. HBR250 3Kg are added, rotating speed is adjusted to into 1500 revs/min
5min is to the transparent shape of liquid for stirring, and rotating speed is down to 800 turns/min, adds butyl glycol ether 6Kg, stirs 3min, successively plus
Enter EFKA3239 0.5Kg, the Twin 4100 of substrate wetting agents LG-DOW company limited of BASF AG of the defoamer U.S.
0.3Kg, petroleum sodium sulfonate 1.5Kg, hexamethylenetetramine 4Kg, sodium lauryl sulphate 2Kg stirring 10min, add fluorine element surface
The PREVENTOL D7 0.1Kg stirrings of antibacterial Dow Chemical company limited in activating agent (FC-4430) 3Kg and tank
10min, add with water open it is dilute to 50% thickening agent Guangzhou Ang Di Chemical Co., Ltd.s non-ionic associative type polyurethane
AD-13 0.2Kg stir, and control viscosity is between 125KU (Stormer viscosity).After filtration, load clean plastics big
In opening barrel, you can obtain component A.
(2) preparation of B component：
Add deionized water 16Kg by formula ratio in ceramic kettle or plastic containers, start motor switch, rotating speed is adjusted to into 300
Turn/min, after adding tartaric acid 4Kg, phosphoric acid 25Kg stirring 5min under agitation, add hydrochloric acid 55Kg stirring 5min, load little opening
In mouth Plastic Drum, B component is obtained.
During use by weight ratio:Component A: component B：Component C=2: 1：1.2. mix homogeneously.
Embodiment 3
(1) preparation of component A：
In stainless cylinder of steel, by weight ratio, deionized water 120Kg is added, starts motor switch, rotating speed is adjusted to
800 revs/min, hydroxyethyl cellulose Shandong Yu Tian Chemical Co., Ltd.s HBR250 2Kg are added, rotating speed is adjusted to into 1500 revs/min
4min is to the transparent shape of liquid for stirring, and rotating speed is down to 800 turns/min, adds butyl glycol ether 4Kg, stirs 4min, successively plus
Enter DX-480.3Kg, the Twin of substrate wetting agents LG-DOW company limited of defoamer Dow Chemical company limited
4100 0.1Kg, petroleum sodium sulfonate 1.2Kg, hexamethylenetetramine 3Kg, sodium lauryl sulphate 3Kg stirring 12min, add fluorine
The F-111 0.1Kg stirring 12min of antibacterial Taiwan Central Asia company in plain surfactant (FC-4430) 2Kg and tank, then plus
Enter with water open it is dilute to 50% thickening agent Guangzhou Ang Di Chemical Co., Ltd.s non-ionic associative type polyurethane AD-13 0.3Kg
Stir, control viscosity is between 130KU (Stormer viscosity).After filtration, load in clean plastics big opening barrel,
Component A can be obtained.
(2) preparation of B component：
Add deionized water 20Kg by formula ratio in ceramic kettle or plastic containers, start motor switch, rotating speed is adjusted to into 300
Turn/min, after adding tartaric acid 5Kg, phosphoric acid 20Kg stirring 5min under agitation, add hydrochloric acid 50Kg stirring 5min, load little opening
In mouth Plastic Drum, B component is obtained.
During use by weight ratio:Component A: component B：Component C=2: 1：1.1 mix homogeneously.
Degreasing and rust removal of the present invention realizes that principle is carried out in three stages：
1. moistening stage, fluorosurfactant and substrate wetting agents can significantly reduce the surface tension of water so that water, breast
Agent and acid can be uniformly sprawled in the steel surface for having oil to have rust.
2. in the oil removing stage, according to similar compatibility principle, after oil contaminants are infiltrated, slowly depart from base material and enter emulsifying agent
In, when oil in large quantities can emulsified dose of cladding of grain after, because floating the reason for proportion is less than water after depart from substrate surface, reach oil removing
Purpose.
3. eliminate rust the stage, after completing for 2 stage, whole emulsifying homogeneous equilibrium is broken, occur in that it is incompatible biphase,
The Emulsion Phase of cladding oil floats to surface, and now, water and acid are fully contacted base material, and according to kinetics, acid is anti-with ferrum first
Should, hydrogen is produced, when hydrogen molecule is separated out from metal surface, pressure is produced to corrosion product, is made oxide skin loose and is shelled automatically
From getting off.Hydrogen can be Fe2O3、Fe3O4FeO is reduced into, accelerates response speed, generate the FeCl of capacitive2、FeCl3、
FeHPO4、Fe(H2PO4)3、Fe3(PO)2In salt and water, rust cleaning effect is reached.At 23 ± 2 DEG C, this product, reaction are coated
30min, then surface is rinsed with clear water, after drying up surface, you can application anti-corrosive primer.
Main raw material(s) title of the present invention, technical specification is given below：
1. hydroxyethyl ether cellulose HEC
Manufacturer：Ya Kualong Chemical Co., Ltd.s of the U.S.
Outward appearance：White or faint yellow granular solids
2. BASF AG of the defoamer EFKA3239 U.S.
Manufacturer：BASF AG of the U.S.
Outward appearance：Light yellow viscous liquid.
3. substrate wetting agents PE-100
Manufacturer：Dow Chemical company limited
Outward appearance：Pale yellow transparent mucus
Component：Containing hydrophilic and lipophilic group macromolecule polymer solution
Active ingredient (%)：50
Solvent：Butyl glycol ether
4. petroleum sodium sulfonate T702 is
Manufacturer：Wuxi Yu Lian additives company limited
Outward appearance：Yellow is to filbert liquid
Active ingredient (%)：35～45
5. sodium lauryl sulphate；
Manufacturer：Beijing Peng Chi Science and Technology Ltd.s
Outward appearance：Pitchy liquid
Non-volatile part %：98
6. fluorosurfactant FC-4430
Sell producer：3M China Co., Ltd. Shanghai is to haze Chemical Co., Ltd..
Outward appearance：Light yellow transparent liquid
Non-volatile part %：60
7. antibacterial F-111 in tank
Manufacturer：Taiwan Central Asia Chemical Co., Ltd.
Outward appearance：White viscous liquid
Non-volatile part %：50
8. hydrochloric acid：Technical grade
9. phosphoric acid：Technical grade
10. tartaric acid：Technical grade.
The present invention is given below to be applied under the pretreating agent and traditional pre-treating technology of outdoor steel structure surface to applying
Layer corrosion resisting property test, step are as follows：
Experiment material：150mm × 100mm × 2mm steel plate (exposure in a humidity environment 60 days so as to surface oxidisation,
Spray the lubricating oil of certain company again in plate face, again steel plate is exposed 30 days in a humidity environment, fully penetrates into greasy dirt
In corrosion layer) 30 pieces；Red iron oxide alkyd primer (Shanxi Baotashan Paint Co., Ltd.).
Corrosion resistance coating can test a point two methods：One kind is put in salt spray test chamber；Another kind is under field conditions (factors)
Carry out.
Experimental facilitiess：Salt-fog resistant test machine (upper Hailin frequency experimental instruments and equipment limited)；The forced dry blasting machine of GY-2 types
(Beijing Chang Kong abrasive blast equipment company limited).
It is prepared by test sample plate：On ground under different pre-treatments process conditions, red iron oxide alkyd primer is sprayed, dry film exists
Between 55-60um, conserve 7 days under room temperature, tested.Under different pre-treatments technique, to relatively seeing below for corrosion resistance coating energy
Table 1：
Table 1, the impact of corrosion resistance coating energy under different pre-treatments technique
Can be drawn the following conclusions by table 1：
Steel plate after this product process, corrosion resisting property reach the degree of oil removing and sandblasting, realize in factory's external chemistry
Method remove steel surface greasy dirt and corrosion.
This product is safer, more environmentally friendly, and efficiency high, and labor intensity is low, and anthropic factor affects little.
After coating product 30min of the present invention, water is rinsed, and surface reaches the Sa2.5 levels in GB8923-88 derusting grades.
Above content is with reference to specific preferred implementation further description made for the present invention, it is impossible to assert
The specific embodiment of the present invention is only limitted to this, for general technical staff of the technical field of the invention, is not taking off
On the premise of present inventive concept, some simple deduction or replace can also be made, the present invention should be all considered as belonging to by institute
Claims of submission determine scope of patent protection.
Claims (6)
1. a kind of pre- pretreating reagent suitable for outdoor steel structure surface, it is characterised in that including by weight 2: 1：1～
Component A, B component and C components that 1.2 ratio mixes, in A, B component, the content of each component is in terms of parts by weight：
Component A：
B component：
C components：
Clean tap water；
The thickening agent is the ACRYSOLTMRM-2050D non-ionic polyurethane association type thickenings of Dow Chemical company limited
At least one of non-ionic associative type polyurethane AD-13 of agent or Guangzhou Ang Di Chemical Co., Ltd.s.
2. a kind of pre- pretreating reagent suitable for outdoor steel structure surface as claimed in claim 1, it is characterised in that the hydroxyl
Cellulose ether (HEC) is at least one of Shandong Yu Tian Chemical Co., Ltd.s or Ya Kualong companies of U.S. HBR250.
3. a kind of preparation method of the pre- pretreating reagent suitable for outdoor steel structure surface, it is characterised in that under the method includes
State step：
(1) preparation of component A：
Parts by weight are mixed to the transparent shape of liquid with 2-3 part hydroxyethyl celluloses for the deionized water of 100-150 parts and is added again
Enter 4-6 part butyl glycol ethers, stir 3-5min；Then 0.3-0.6 part defoamer, 0.1-0.4 part base material moistenings are sequentially added
Agent, 1.0-1.5 part petroleum sodium sulfonates, 3-5 part hexamethylenetetramines, 2-4 part sodium lauryl sulphates, mix 10-
15min；Antibacterial in 2-3 parts fluorosurfactant FC-4430 and 0.1-0.3 part tanks is added, 10-12min is stirred；Again plus
The thickening agent for entering 0.1-0.3 parts stirs, and control viscosity is in 120-130KU Stormer viscositys；Filter, obtain final product component A；
(2) preparation of B component：
It is the deionized water and 4-6 part tartaric acid, 20-30 parts phosphoric acid stirring 5min of 16-20 parts by parts by weight, adds 50-60
Part hydrochloric acid stirring 5min, obtains final product B component；
(3) C component tap waters are weighed；
(4) mixing of component：
During use, by weight ratio:Component A: B component：C component=2: 1：1～1.2 ratio mix homogeneously.
4. the preparation method of the pre- pretreating reagent of outdoor steel structure surface is applied to as claimed in claim 3, it is characterised in that
In the step (1), deionized water is mixed with hydroxyethyl cellulose, and blender rotating speed is stirred to liquid in saturating for 1500r/min
Bright shape；When adding butyl glycol ether, blender rotating speed is 800r/min.
5. the preparation method of the pre- pretreating reagent of outdoor steel structure surface is applied to as claimed in claim 3, it is characterised in that
In the step (1), thickening agent be with water it is dilute to 50% thickener soln.
6. the preparation method of the pre- pretreating reagent of outdoor steel structure surface is applied to as claimed in claim 3, it is characterised in that
In the step (2), blender rotating speed is 300r/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410690409.0A CN104404550B (en) | 2014-11-25 | 2014-11-25 | Pre-treatment agent suitable for surface of outdoor steel structure, and preparation method for pre-treatment agent |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410690409.0A CN104404550B (en) | 2014-11-25 | 2014-11-25 | Pre-treatment agent suitable for surface of outdoor steel structure, and preparation method for pre-treatment agent |
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| CN104404550B true CN104404550B (en) | 2017-04-19 |
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| CN101962779A (en) * | 2010-10-22 | 2011-02-02 | 大连三达奥克化学股份有限公司 | Acidic cleaner for removing oxide scale and oily carbon deposition mixing layer on surface of aluminum |
| CN102443812A (en) * | 2011-12-29 | 2012-05-09 | 大连三达奥克化学股份有限公司 | Cleaning antirust agent of cast nickel-bronze workpiece for vessel thruster and production method thereof |
| CN102465061A (en) * | 2010-11-10 | 2012-05-23 | 罗朝雯 | Detergent for vehicle enclosures |
| CN103046036A (en) * | 2012-12-06 | 2013-04-17 | 安徽未来表面技术有限公司 | Metal derusting and antirusting agent and preparation method of metal derusting and antirusting agent |
| CN103882454A (en) * | 2014-03-10 | 2014-06-25 | 苏州捷德瑞精密机械有限公司 | Steel rust removal fluid and preparation method thereof |
-
2014
- 2014-11-25 CN CN201410690409.0A patent/CN104404550B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962779A (en) * | 2010-10-22 | 2011-02-02 | 大连三达奥克化学股份有限公司 | Acidic cleaner for removing oxide scale and oily carbon deposition mixing layer on surface of aluminum |
| CN102465061A (en) * | 2010-11-10 | 2012-05-23 | 罗朝雯 | Detergent for vehicle enclosures |
| CN102443812A (en) * | 2011-12-29 | 2012-05-09 | 大连三达奥克化学股份有限公司 | Cleaning antirust agent of cast nickel-bronze workpiece for vessel thruster and production method thereof |
| CN103046036A (en) * | 2012-12-06 | 2013-04-17 | 安徽未来表面技术有限公司 | Metal derusting and antirusting agent and preparation method of metal derusting and antirusting agent |
| CN103882454A (en) * | 2014-03-10 | 2014-06-25 | 苏州捷德瑞精密机械有限公司 | Steel rust removal fluid and preparation method thereof |
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| CN104404550A (en) | 2015-03-11 |
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