CN105483713A - Modified macromolecular combined corrosion inhibitor and preparation method and application thereof - Google Patents
Modified macromolecular combined corrosion inhibitor and preparation method and application thereof Download PDFInfo
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- CN105483713A CN105483713A CN201510879310.XA CN201510879310A CN105483713A CN 105483713 A CN105483713 A CN 105483713A CN 201510879310 A CN201510879310 A CN 201510879310A CN 105483713 A CN105483713 A CN 105483713A
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- corrosion inhibitor
- flour
- tapioca
- vinyl acetate
- molecular compound
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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
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
-
- 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
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
- C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
- C23G1/065—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors sulfur-containing compounds
-
- 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
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
- C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
- C23G1/068—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors compounds containing a C=C bond
Abstract
The invention discloses a modified macromolecular combined corrosion inhibitor and a preparation method and application thereof. The modified macromolecular combined corrosion inhibitor comprises cassava starch-vinyl acetate-styrene grafted copolymer of 0.1-1.0 g/L, sodium lignin sulfonate of 0.05-0.1 g/L, potassium sorbate of 0.05-0.1 g/L, glycol of 0.01-0.1 g/L and the balance pickling solutions. The preparation method comprises the steps of raw material preparation and preparation. According to the application, the modified macromolecular combined corrosion inhibitor can be applied to preparation of cleaning agents for steel, aluminum, petrochemical equipment, boilers and pipelines. The modified macromolecular combined corrosion inhibitor has the advantages of being free of poisons, low in cost and high in adaptability, obviously inhibiting the corrosion effect of various kinds of organic acid and inorganic acid to metal material, being suitable for acid pickling of the steel and the aluminum in the organic acid and the inorganic acid, being suitable for cleaning of the petrochemical equipment, the boilers and the pipelines, being free of pollution after being used and being safe and convenient to use.
Description
Technical field
The invention belongs to chemical technology field, be specifically related to a kind of modified high-molecular compound corrosion inhibitor and preparation method thereof and application.
Background technology
The English major name of inhibiter: anti-corrosive.corrosioninhibitor.Also corrosion inhibitor can be called.Its consumption very little (0.1% ~ 1%), but Be very effective.Be mainly used in neutral medium (boiler feed water, recirculated cooling water), acidic medium (hydrochloric acid descaled, the acid dip solution of plating piece rust cleaning before plating) and gaseous media (vapour-phase inhibitor).Inhibition efficiency is larger, suppresses the effect of corrosion better.Sometimes compared with several inhomogeneity inhibiter of low dosage with the use of good corrosion mitigating effect can be obtained, this effect is called synergistic effect; On the contrary, if reduce respective inhibition efficiency on the contrary when dissimilar inhibiter uses jointly, then antagonistic effect is called.Inhibiter can be classified by membrane property by the mechanism of action or protection.Inhibiter in the market exists that expensive, toxicity is large, contaminate environment mostly, can not satisfy social needs.Therefore, develop a kind of inhibiter that can solve the problem to be very important.
Summary of the invention
The first object of the present invention is to provide a kind of modified high-molecular compound corrosion inhibitor; Second object is to provide the preparation method of described modified high-molecular compound corrosion inhibitor; 3rd object is to provide the application of described modified high-molecular compound corrosion inhibitor.
The first object of the present invention realizes like this, described modified high-molecular compound corrosion inhibitor comprises tapioca (flour)-vinyl acetate-styrene graft copolymer 0.1 ~ 1.0g/L, sodium lignosulfonate 0.05 ~ 0.1g/L, potassium sorbate 0.05 ~ 0.1g/L, ethylene glycol 0.01 ~ 0.1g/L, and surplus is pickle solution.
The second object of the present invention is achieved in that and comprises following concrete steps:
A, raw material prepare: prepare tapioca (flour)-vinyl acetate-styrene graft copolymer for subsequent use, and preparation pickle solution, sodium lignosulfonate, potassium sorbate, ethylene glycol are for subsequent use;
B, preparation: tapioca (flour)-vinyl acetate-styrene graft copolymer, sodium lignosulfonate, potassium sorbate, ethylene glycol are joined stirring and evenly mixing in pickle solution and namely obtains target compound by proportioning raw materials.
The third object of the present invention is achieved in that described modified high-molecular compound corrosion inhibitor is preparing the application in steel, aluminium, petrochemical equipment, filtration, pipeline cleaning agent.
It is expensive that the present invention overcomes existing inhibiter, toxicity is large, the deficiency of contaminate environment, and it is wide to originate, aboundresources, the tapioca (flour) that output is large is raw material, have chosen two vinyl monomer vinyl acetate between to for plastics and vinylbenzene to carry out graft copolymerization synthesis and prepare a kind of easily quantification, easy storage, easy to use, corrosion mitigating effect is good, tapioca (flour)-vinyl acetate-styrene the graft copolymer of stable performance coordinates based on sodium lignosulfonate, add collaborative auxiliary agent potassium sorbate, inhibition stablizer ethylene glycol, there is synergistic function in the restrainer that surplus pickle solution prepares.The present invention have nontoxic, cost is low, strong adaptability and obviously inhibit the corrosive nature of acid to metallic substance, steel and aluminium pickling in mineral acid and organic acid can be applicable to, can be applicable to the cleaning of petrochemical equipment, boiler, pipeline, pollution-free, use safety, convenience after inhibiter of the present invention uses.
Accompanying drawing explanation
Fig. 1 is present invention process schematic flow sheet.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is further illustrated, but limited the present invention never in any form, and any conversion done based on training centre of the present invention or replacement, all belong to protection scope of the present invention.
Modified high-molecular compound corrosion inhibitor of the present invention, comprise tapioca (flour)-vinyl acetate-styrene graft copolymer 0.1 ~ 1.0g/L, sodium lignosulfonate 0.05 ~ 0.1g/L, potassium sorbate 0.05 ~ 0.1g/L, ethylene glycol 0.01 ~ 0.1g/L, surplus is pickle solution.
The percentage of grafting of described tapioca (flour)-vinyl acetate-styrene graft copolymer is more than 120%, and monomer conversion more than 90%, outward appearance is white solid.
Described tapioca (flour)-vinyl acetate-styrene graft copolymer is that raw material and two vinyl monomer vinyl acetate between to for plastics and vinylbenzene carry out ternary graft copolymerization Reactive Synthesis and prepares with tapioca (flour).
Described tapioca (flour)-vinyl acetate-styrene graft copolymer is that raw material and two vinyl monomer vinyl acetate between to for plastics and vinylbenzene carry out ternary graft copolymerization Reactive Synthesis and prepares with tapioca (flour), specifically comprises the following steps:
A, starch pasting: the tapioca (flour) getting 10 ~ 15g joins in 250mL there-necked flask, adds 100mL distilled water, logical N in 70 ~ 80 DEG C of waters bath with thermostatic control
2stir gelatinization 0.4 ~ 0.6h, cooling;
B, grafting crude product synthesize: the vinyl acetate between to for plastic and the vinylbenzene that add tapioca (flour) weight 1 ~ 1.5 times in the starch after step A gelatinization, 10 ~ 20min is stirred with rotating speed 60 ~ 120r/min, add tapioca (flour) weight 0.5 ~ 2.0 times of initiator again, slowly drip 20 ~ 25mL1.5 ~ 2.0mol/LNaHSO
3, continue stirring reaction 250 ~ 300min, reaction solution be cooled to room temperature, use anhydrous C
2h
5oH precipitated product, filters, 40 ~ 60 DEG C of constant weight 36 ~ 48h obtains the crude product of tapioca (flour)-vinyl acetate-styrene graft copolymer in vacuum drying oven after washing;
C. purifying: step B is prepared-the crude product apparatus,Soxhlet's of phenylethene grafted copolymer is using organic solvent as solvent, extracting 20 ~ 28h is to remove homopolymer, in 40 ~ 60 DEG C of vacuum-dryings to constant, obtain target compound tapioca (flour)-vinyl acetate-styrene graft copolymer.
Vinyl acetate between to for plastic described in step B and cinnamic volume ratio are 1:2 ~ 4.
Initiator described in step B is Ce (SO
4)
2or (NH
4)
2s
2o
8.
Organic solvent described in step C is acetone.
Described NaHSO
3concentration be 1.5 ~ 2.0mol/L.
Described pickle solution is organic acid washing liquor or mineral acid washing lotion, and described organic acid washing liquor is one or more in citric acid, thionamic acid, oxalic acid, acetic acid, trichoroacetic acid(TCA); Described mineral acid washing lotion is one or more in hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid.
The preparation method of modified high-molecular compound corrosion inhibitor of the present invention, comprises following concrete steps:
A, raw material prepare: prepare tapioca (flour)-vinyl acetate-styrene graft copolymer for subsequent use, and preparation pickle solution, sodium lignosulfonate, potassium sorbate, ethylene glycol are for subsequent use;
B, preparation: tapioca (flour)-vinyl acetate-styrene graft copolymer, sodium lignosulfonate, potassium sorbate, ethylene glycol are joined stirring and evenly mixing in pickle solution and namely obtains target compound by proportioning raw materials.
Specific implementation method is as follows:
A, a certain amount of tapioca (flour) add in 250mL there-necked flask, add 100mL distilled water, logical N in water bath with thermostatic control
2stir gelatinization 0.5h, gelatinization point is 70-80 DEG C, cooling;
B, the vinyl acetate between to for plastic adding metering ratio and vinylbenzene, stir certain hour, then add initiator, slowly drip NaHSO
3, continue to be stirred to the reaction times.Reaction solution is cooled to room temperature, uses anhydrous C after stopping by question response
2h
5oH precipitated product.Filter, washing after in vacuum drying oven 50 DEG C be dried to constant weight, obtain grafting crude product.
C, quantitatively take grafting crude product, with apparatus,Soxhlet's using organic solvent as solvent, extracting 24h, removing homopolymer, in 50 DEG C of vacuum-dryings to constant, obtains the tapioca (flour)-vinyl acetate-styrene graft copolymer of white.
The described modified high-molecular compound corrosion inhibitor that is applied as of modified high-molecular compound corrosion inhibitor of the present invention is preparing the application in steel, aluminium, petrochemical equipment, filtration, pipeline cleaning agent.
With concrete case study on implementation, the present invention will be further described below:
The preparation of embodiment 1---tapioca (flour)-vinyl acetate-styrene graft copolymer
This tapioca (flour)-vinyl acetate-styrene graft copolymer is by Ce (SO
4)
2form as initiator and vinyl acetate between to for plastic and vinylbenzene, wherein:
A. the tapioca (flour) of 10g is added in 250mL there-necked flask, add 100mL distilled water, logical N in 75 DEG C of waters bath with thermostatic control
2stir gelatinization 0.5h, gelatinization point is 70 ~ 80 DEG C, cooling;
B. add vinyl acetate between to for plastic and the vinylbenzene of 1:2, stir 20min, then add 10gCe (SO
4)
2, slowly drip the 1.5mol/LNaHSO of 20ml
3solution, continues stirring reaction 250min.Reaction solution is cooled to room temperature, uses anhydrous C after stopping by question response
2h
5oH precipitated product.Filter, washing after in vacuum drying oven 50 DEG C be dried to constant weight, obtain grafting crude product.
C. take grafting crude product 16.5g, with apparatus,Soxhlet's using acetone as solvent, extracting 24h, removing homopolymer, in 50 DEG C of vacuum-dryings to constant, obtains the tapioca (flour)-vinyl acetate-styrene graft copolymer 16.0g of white.
The preparation of embodiment 2---tapioca (flour)-vinyl acetate-styrene graft copolymer
This tapioca (flour)-vinyl acetate-styrene graft copolymer is by (NH
4)
2s
2o
8form as initiator and vinyl acetate between to for plastic and vinylbenzene, wherein:
A. the tapioca (flour) of 15g is added in 250mL there-necked flask, add 100mL distilled water, logical N in 80 DEG C of waters bath with thermostatic control
2stir gelatinization 0.6h, gelatinization point is 70 ~ 80 DEG C, cooling;
B. add vinyl acetate between to for plastic and the vinylbenzene of 1:2, stir 20min, then add 15gCe (SO
4)
2, slowly drip the 2.0mol/LNaHSO of 25ml
3solution, continues stirring reaction 300min.Reaction solution is cooled to room temperature, uses anhydrous C after stopping by question response
2h
5oH precipitated product.Filter, washing after in vacuum drying oven 50 DEG C be dried to constant weight, obtain grafting crude product.
C. take grafting crude product 22g, with apparatus,Soxhlet's using acetone as solvent, extracting 24h, removing homopolymer, in 50 DEG C of vacuum-dryings to constant, obtains the tapioca (flour)-vinyl acetate-styrene graft copolymer 21.6g of white.
The preparation of embodiment 3---tapioca (flour)-vinyl acetate-styrene graft copolymer
This tapioca (flour)-vinyl acetate-styrene graft copolymer is by (NH
4)
2s
2o
8form as initiator and vinyl acetate between to for plastic and vinylbenzene, wherein:
A. the tapioca (flour) of 10g is added in 250mL there-necked flask, add 100mL distilled water, logical N in 70 DEG C of waters bath with thermostatic control
2stir gelatinization 0.5h, gelatinization point is 70 ~ 80 DEG C, cooling;
B. add vinyl acetate between to for plastic and the vinylbenzene of 1:2, stir 20min, then add 15g (NH
4)
2s
2o
8, slowly drip the 2.0mol/LNaHSO of 20ml
3solution, continues stirring reaction 300min.Reaction solution is cooled to room temperature, uses anhydrous C after stopping by question response
2h
5oH precipitated product.Filter, washing after in vacuum drying oven 50 DEG C be dried to constant weight, obtain grafting crude product.
C. take grafting crude product 16.2g, with apparatus,Soxhlet's using acetone as solvent, extracting 24h, removing homopolymer, in 50 DEG C of vacuum-dryings to constant, obtains the tapioca (flour)-vinyl acetate-styrene graft copolymer 16.0g of white.
Embodiment 4---the preparation of modified high-molecular compound corrosion inhibitor
Add in Example 1 tapioca (flour)-vinyl acetate-styrene graft copolymer 0.5g, sodium lignosulfonate 0.1, potassium sorbate 0.05g, ethylene glycol 0.05g concentration 0.5 ~ 5.0mol/L sulfuric acid lotion to 1L, obtain target compound modified high-molecular compound corrosion inhibitor.
Embodiment 5---the preparation of modified high-molecular compound corrosion inhibitor
Add the phosphoric acid washing lotion of concentration 0.5 ~ 10.0mol/L in Example 2 tapioca (flour)s-vinyl acetate-styrene graft copolymer 0.3g, sodium lignosulfonate 0.1, potassium sorbate 0.05g, ethylene glycol 0.05g to 1L, obtain target compound modified high-molecular compound corrosion inhibitor.
Embodiment 6---the preparation of modified high-molecular compound corrosion inhibitor
Add the citric acid wash of concentration 0.5 ~ 5.0mol/L to 1L in Example 3 tapioca (flour)s-vinyl acetate-styrene graft copolymer 0.5g, sodium lignosulfonate 0.1, potassium sorbate 0.05g, ethylene glycol 0.05g, obtain target compound modified high-molecular compound corrosion inhibitor.
Example 7 is executed in examination---the pickling of ferrous materials
Ferrous materials is chosen as cold rolling steel disc, is injected by composite for embodiment 4 good inhibiter, mixes, and corrosion inhibition all can more than 97% in differing temps (20 ~ 50 DEG C) difference corrosion soak time (6 ~ 156h).Table 1 is 1.0mol/LH
2sO
4testing data, method is weight-loss method.
Table 1 compound corrosion inhibitor is to the corrosion inhibition rate of cold-rolled steel in HCl
Example 8 is executed in examination---the pickling of ferrous materials
Ferrous materials is chosen as cold rolling steel disc, is injected by composite for embodiment 5 good inhibiter, mixes, and corrosion inhibition all can more than 95% in differing temps (20 ~ 50 DEG C) difference corrosion soak time (6 ~ 156h).Table 2 is 3.0mol/LH
3pO
4testing data, method is weight-loss method.
Table 2 compound corrosion inhibitor to cold-rolled steel at 3.0mol/LH
3pO
4in corrosion inhibition rate
Example 9 is executed in examination---the pickling of ferrous materials
Ferrous materials is chosen as cold rolling steel disc, is injected by composite for embodiment 6 good inhibiter, mixes, and corrosion inhibition all can more than 93% in differing temps (20 ~ 50 DEG C) difference corrosion soak time (6 ~ 156h).Table 2 is 4.0mol/L citric acid (C
6h
8o
7) testing data, method is weight-loss method.
Table 3 compound corrosion inhibitor to cold-rolled steel at 4.0mol/L citric acid (C
6h
8o
7) in corrosion inhibition rate
Claims (10)
1. a modified high-molecular compound corrosion inhibitor, it is characterized in that described modified high-molecular compound corrosion inhibitor comprises tapioca (flour)-vinyl acetate-styrene graft copolymer 0.1 ~ 1.0g/L, sodium lignosulfonate 0.05 ~ 0.1g/L, potassium sorbate 0.05 ~ 0.1g/L, ethylene glycol 0.01 ~ 0.1g/L, surplus is pickle solution.
2. modified high-molecular compound corrosion inhibitor according to claim 1, it is characterized in that the percentage of grafting of described tapioca (flour)-vinyl acetate-styrene graft copolymer is more than 120%, monomer conversion more than 90%, outward appearance is white solid.
3. modified high-molecular compound corrosion inhibitor according to claim 1, it is characterized in that described tapioca (flour)-vinyl acetate-styrene graft copolymer is is that raw material and two vinyl monomer vinyl acetate between to for plastics and vinylbenzene carry out ternary graft copolymerization Reactive Synthesis and prepares with tapioca (flour).
4. according to the arbitrary described modified high-molecular compound corrosion inhibitor of claim 1 ~ 3, it is characterized in that described tapioca (flour)-vinyl acetate-styrene graft copolymer is is that raw material and two vinyl monomer vinyl acetate between to for plastics and vinylbenzene carry out ternary graft copolymerization Reactive Synthesis and prepares with tapioca (flour), specifically comprises the following steps:
A, starch pasting: the tapioca (flour) getting 10 ~ 15g joins in 250mL there-necked flask, adds 100mL distilled water, logical N in 70 ~ 80 DEG C of waters bath with thermostatic control
2stir gelatinization 0.4 ~ 0.6h, cooling;
B, grafting crude product synthesize: the vinyl acetate between to for plastic and the vinylbenzene that add tapioca (flour) weight 1 ~ 1.5 times in the starch after step A gelatinization, 10 ~ 20min is stirred with rotating speed 60 ~ 120r/min, add tapioca (flour) weight 0.5 ~ 2.0 times of initiator again, slowly drip 20 ~ 25mL1.5 ~ 2.0mol/LNaHSO
3, continue stirring reaction 250 ~ 300min, reaction solution be cooled to room temperature, use anhydrous C
2h
5oH precipitated product, filters, 40 ~ 60 DEG C of constant weight 36 ~ 48h obtains the crude product of tapioca (flour)-vinyl acetate-styrene graft copolymer in vacuum drying oven after washing;
C. purifying: step B is prepared-the crude product apparatus,Soxhlet's of phenylethene grafted copolymer is using organic solvent as solvent, extracting 20 ~ 28h is to remove homopolymer, in 40 ~ 60 DEG C of vacuum-dryings to constant, obtain target compound tapioca (flour)-vinyl acetate-styrene graft copolymer.
5. modified high-molecular compound corrosion inhibitor according to claim 4, is characterized in that the vinyl acetate between to for plastic described in step B and cinnamic volume ratio are 1:2 ~ 4.
6., according to the modified high-molecular compound corrosion inhibitor that claim 4 is stated, it is characterized in that the initiator described in step B is Ce (SO
4)
2or (NH
4)
2s
2o
8.
7. modified high-molecular compound corrosion inhibitor according to claim 4, is characterized in that the organic solvent described in step C is acetone.
8. modified high-molecular compound corrosion inhibitor according to claim 1, it is characterized in that described pickle solution is organic acid washing liquor or mineral acid washing lotion, described organic acid washing liquor is one or more in citric acid, thionamic acid, oxalic acid, acetic acid, trichoroacetic acid(TCA); Described mineral acid washing lotion is one or more in hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid.
9. a preparation method for the arbitrary described modified high-molecular compound corrosion inhibitor of claim 1 ~ 8, is characterized in that comprising following concrete steps:
A, raw material prepare: prepare tapioca (flour)-vinyl acetate-styrene graft copolymer for subsequent use, and preparation pickle solution, sodium lignosulfonate, potassium sorbate, ethylene glycol are for subsequent use;
B, preparation: tapioca (flour)-vinyl acetate-styrene graft copolymer, sodium lignosulfonate, potassium sorbate, ethylene glycol are joined stirring and evenly mixing in pickle solution and namely obtains target compound by proportioning raw materials.
10. an application for the arbitrary described modified high-molecular compound corrosion inhibitor of claim 1 ~ 8, is characterized in that described modified high-molecular compound corrosion inhibitor is preparing the application in steel, aluminium, petrochemical equipment, filtration, pipeline cleaning agent.
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| CN105755484A (en) * | 2016-05-14 | 2016-07-13 | 西南林业大学 | High-efficient compounding plant inhibitor as well as preparation method and application thereof |
| CN106555190A (en) * | 2016-11-19 | 2017-04-05 | 西南林业大学 | A kind of modified high-molecular product compound corrosion inhibitor and preparation method and application |
| CN108531921A (en) * | 2018-06-29 | 2018-09-14 | 安徽智博新材料科技有限公司 | A kind of cable testing bridge surface zincincation |
| CN108706750A (en) * | 2018-07-18 | 2018-10-26 | 林文标 | A kind of modified starch antisludging agent and preparation method thereof |
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|---|---|
| CN105483713B (en) | 2017-08-29 |
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