CN103388827B - The application of nanofiber heavy-duty anticorrosive composite material in wet desulfurization concrete chimney - Google Patents
The application of nanofiber heavy-duty anticorrosive composite material in wet desulfurization concrete chimney Download PDFInfo
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Abstract
The invention discloses the application process of nanofiber heavy-duty anticorrosive composite material in concrete chimney.The method step is: inner wall of stack pre-treatment, with interfacial agents pretreatment inner wall of stack, spraying first hands over sticky material, spraying second hands over sticky material, spray the 3rd road and hand over sticky material, paste first glass fiber composite layer, spray the 4th road and hand over sticky material, paste second glass fiber composite layer, spray the 5th road and hand over sticky material, paste the 3rd road glass fiber composite layer, spray the 6th road and hand over sticky material, spray the 7th road and hand over sticky material, spray the 8th road current potential and regulate material, antirust, by force corrosion-resistant, copy titanium alloy liner principle, a fiberglass plastics metal cylinder is built at concrete desulfuration chimney inwall, effective prevention acidic liquid corrodes inner wall of stack, the anticorrosion time limit at least 20 years, its cost is only 1/3 ~ 1/4 of titanium alloy.Shock-resistant, wear-resisting, laborsaving, nontoxic, environmental protection, is widely used in wet desulfurization concrete chimney.
Description
Technical field
The present invention relates to the application process of chemical industry nano composite material, be specifically related to the application of nanofiber heavy-duty anticorrosive composite material in wet desulfurization concrete chimney.
Background technology
For implement further State Council's " comprehensive programme of work of energy-saving and emission-reduction " and " energy-saving and emission-reduction statistical monitoring and examination embodiment and way ", improve operational efficiency and the managerial skills of coal desulfurization facility, guarantee to realize Eleventh Five-Year Plan total sulfur dioxide emission reduction targets, practical reinforcement is to the supervision of coal desulfurization facility operation process, the operation of practical reinforcement desulfurization equipment, maintenance and management, guarantee normal operation and the desulfuration efficiency of desulfurization equipment, employing high-efficiency flue gas desulfurization system is seemed particularly important.
The inner normal operating temperature of desulfurization after funnel is between 50 ~ 100 DEG C, and temperature reduces, and smoke moisture increases greatly; Simultaneously because the acid dew-point temperature of flue gas reduces, inner wall of stack very easily condenses, SO remaining in flue gas
3form the dilute sulfuric acid solution that corrosivity, permeability are very strong after dissolving, very strong corrosivity is caused to chimney structure.Chimney in use finds that the outer side tube-wall of chimney exists many places Seepage in various degree, and sepage forms crystallization on stack shell surface, forms bulk icicle winter.Former chimney coated inside loses antiseptic effect.
The conventional anticorrosion means of desulfuration chimney and problems faced
From present situation, can effectively prevent the technological means of desulfurization after funnel inner wall corrosion very limited, common method comprises: glass block and glass flake etc. that titanium alloy liner, stainless steel inner lining, steel cylinder liner add anticorrosive paint, adopt acidproof friendship mud to bond; In these methods, the titanium alloy liner high except cost has except good anti-corrosion function, objectively says, the anticorrosion time that other comparatively economic anticorrosion means can play is very limited, almost cannot more than 1 year.The reason causing current anticorrosion means cannot obtain promising result mainly comprises following three aspects:
(1) adopt between the anticorrosion wall of acidproof brick of segmentation supporting and there is flexible gap, current anticorrosion means cannot solve the etching problem that gap location exists, and cause SO
3the dilute sulfuric acid solution formed after dissolving, through gap, forms corrosion to inner wall of stack, and penetrates chimney wall very soon, cause serious potential safety hazard.
(2) because acidproof brick is different from the coefficient of expansion of the acidproof friendship mud as adhesive, after temperature after a while alternately change, inevitably gap will be there is therebetween, SO
3dilute sulfuric acid solution will pass through these trickle crevice corrosion inner wall of stack.
(3) in order to solve the problem, traditional anti-corrosion method has to, at acidproof brick surface mount glass flake, enter gap to prevent acidic liquid; But it is different from acidproof brick as the coefficient of expansion of the glass flake of rigid material itself, in addition adhesive force limited (being approximately only 0.4 ~ 1.0 MPa) between the two, along with the passing of alternately change and the time of temperature, cause glass flake layer seepage and come off in a large number, thus losing anti-corrosion function.
Due to corrosion, a large amount of hard-earned useful materials becomes waste material, and due to the immoderate exploitation of people and use raw material, tellurian limited resources are just day by day exhausted.According to " Chinese Investigation On Corrosion report " introduce, the whole world within every 90 seconds, just have one ton of steel corrosion to become iron rust, corrosion engulf every year a country then GDP 3% ~ 5%, by this calculate, within 2011, China's corrosion loss is about 20000 trillion yuan.
Anticorrosion is an old problem, Ye Shige world hard nut to crack.Prevent the method for corrosion of metal and the research of material to be not only a great problem in science, and there is important function and position in national economy.The development level of heavy anticorrosive material how, and performance how, becomes the mark of a mark one national science technical merit.For implement further State Council's " comprehensive programme of work of energy-saving and emission-reduction " and " energy-saving and emission-reduction statistical monitoring and examination embodiment and way ", improve operational efficiency and the managerial skills of coal desulfurization facility, guarantee to realize Eleventh Five-Year Plan total sulfur dioxide emission reduction targets, practical reinforcement is to the supervision of coal desulfurization facility operation process, the operation of practical reinforcement desulfurization equipment, maintenance and management, guarantee that the safety of desulfurization equipment is normal to run and desulfuration efficiency, employing high-efficiency flue gas desulfurization system is seemed particularly important.
Summary of the invention
The object of this invention is to provide a kind of nontoxic, harmless, tasteless, environmental protection, composite bed thickness is thin, ageing resistance is good, has the application of nanofiber heavy-duty anticorrosive composite material in wet desulfurization concrete chimney of the corrosive power of acidproof, alkaline-resisting, salt tolerant, water vapour and the nuisance of overlength.
In order to overcome the deficiencies in the prior art, technical scheme of the present invention solves like this: special character of the present invention is that this application process carries out in the steps below:
(1), inner wall of stack pre-treatment requires: root out the former anticorrosive coat of inner wall of stack, repair damaged acidbrick lining, KPI-acid resistant adhesive mortar is adopted to smear whole inner wall of stack to reach surface smoothness of constructing better, construction surface requirements is clean, dry, all macroscopic greases, oil, dirt, lubricant and other pollutant must all remove, without the chemicals of acid-alkali salt soap class;
(2), with interfacial agents pretreatment inner wall of stack, at inner wall of stack surface spraying HJF-01J desulfurization special interface agent, spraying build is 10 ~ 20 μm, reach construction pre-treatment requirement, surface cleaning, by interfacial agents solvent clean two times, described interfacial agents solvent is HJF-01D desulphurization plant special-purpose nanometer fiber heavy-duty antiseptic paint solvent, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(3), first is handed over and is sticked into shaped material, spraying HJF-01D desulphurization plant special-purpose nanometer heavy antisepsis priming paint, spraying build is 70 ~ 80 μm, manufacture technology requires: application can not have holiday defect to produce, especially repetition coating decoration is carried out for overlap joint platform gap location, to reach reliable antiseptic effect, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(4), second is handed over and is sticked into shaped material, spraying nanometer heavy antisepsis TS-II type priming paint, spraying build is 120 ~ 130 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, especially again coating decoration is carried out for overlap joint platform gap location, to reach reliable antiseptic effect, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(5), the 3rd road is handed over and is sticked into shaped material, spraying nanometer heavy antisepsis TS-II type priming paint, spraying build is 150 ~ 160 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, especially again coating decoration is carried out, to reach reliable antiseptic effect for overlap joint platform gap location;
(6), first glass fiber composite layer, namely alkali-free glass wool cloth is pasted, glass wool cloth specification is that 0.4mm is thick, 4 × 4 × 1000mm, and what wherein 4 × 4 × 1000mm referred to is glass wool cloth grid is 4 mm × 4 mm, fabric width is 1000mm, after 3rd road spraying nanometer heavy antisepsis TS-II type priming paint, sticking glass silk cloth in 5 minutes, and grind crowded glass wool cloth surface with solid roll back and forth along pasting direction simultaneously, make coating ooze out glass wool cloth surface, get rid of internal residual air; In temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(7), the 4th road hands over and sticks into shaped material, spraying nanometer heavy antisepsis TS-II type priming paint, and spraying build is 150 ~ 160 μm, manufacture technology require be: construct in strict accordance with technological requirement, can not holiday;
(8), second glass fiber composite layer, i.e. alkali-free glass wool cloth, glass wool cloth specification is that 0.4mm is thick, 4 × 4 × 1000mm, and what wherein 4 × 4 × 1000mm referred to is glass wool cloth grid is 4 mm × 4 mm, fabric width is 1000mm, after 4th road spraying nanometer heavy antisepsis TS-II type priming paint, sticking glass silk cloth in 5 minutes, and grind crowded glass wool cloth surface with solid roll back and forth along pasting direction simultaneously, make coating ooze out glass wool cloth surface, get rid of internal residual air; In temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(9), the 5th road hands over and sticks into shaped material, spraying nanometer heavy antisepsis TS-II type priming paint, and spraying build is 150 ~ 160 μm, manufacture technology require be: construct in strict accordance with technological requirement, can not holiday;
(10), the 3rd road glass fiber composite layer, i.e. alkali-free glass wool cloth, glass wool cloth specification is that 0.4mm is thick, 4 × 4 × 1000mm, and what wherein 4 × 4 × 1000mm referred to is glass wool cloth grid is 4 mm × 4 mm, fabric width is 1000mm, after 5th road spraying nanometer heavy antisepsis priming paint, sticking glass silk cloth in 5 minutes, and grind crowded glass wool cloth surface with solid roll back and forth along pasting direction simultaneously, make coating ooze out glass wool cloth surface, get rid of internal residual air; In temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(11), the 6th road is handed over and is sticked into shaped material, spraying HJF-01D desulphurization plant special-purpose nanometer heavy antisepsis TS-II type priming paint, spraying build is 150 ~ 160 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(12), the 7th road is handed over and is sticked into shaped material, spraying HJF-01D desulphurization plant special-purpose nanometer heavy antisepsis TS-II type priming paint, spraying build is 100 ~ 110 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(13), the 8th road current potential regulates material, spraying HJF-01M desulphurization plant special-purpose nanometer heavy antisepsis TSM-II type current potential regulates paint, spraying build is 100 ~ 110 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 7 ~ 10 days;
(14), total coating thickness, spraying dry film gross thickness is 1000 ~ 1090 μm, and finished product is nanofiber high-performance heavy antisepsis flexible glass steel plastic-metal cylinder.
The present invention compared with prior art, starts the frontier of the antirust composite of nanometer wet desulfurization concrete chimney.To the change of the raising of the wet desulfurization concrete chimney anti-corrosion material performance not amount of being, but create the change of matter, and there is following characteristics:
1), antirust, decay resistance strengthens, and resisting chloride ion penetration seepage ability is higher than national standard 2 orders of magnitude.
2), wet desulfurization concrete chimney special-purpose nanometer fiber heavy antisepsis is metal plastic glass steel composite material, copy the principle of titanium alloy liner, build a flexibility be made up of nanometer heavy anticorrosive material " fiberglass plastics metal cylinder " at concrete desulfuration chimney inwall, thus effectively stop acidic liquid to the corrosion of inner wall of stack; Its anti-corrosion function can compare favourably with titanium alloy completely, even more superior, and under effective anticorrosion time limit reaches the prerequisite of 20 years, cost is only 1/3 ~ 1/4 of titanium alloy.
3), can support the use with most of antirust interface, can not pernicious gas being produced during the welding of nanofiber macromolecule, efficiently solve and scribble epoxy zinc-rich paint, large amount zinc oxide fog can be produced, to the infringement of human body when welding.
4), there is excellent adhesive force, impact resistance and wearability.
5), save time, laborsaving, nontoxic, environmental protection.
6), effectively solve the current world, root problem that domestic wet desulfurization concrete chimney heavy antisepsis faces, economize on resources, antiseptic property is high, environmental protection, for raising China desulfurization equipment technology level, extend the service life of equipment, eliminate potential safety hazard.
Be widely used in wet desulfurization concrete chimney.
Operative norm
1, DL/T 901-2004 " Chimney in Fossil Power Plant (flue) inside lining anti-corrosive material "
2, GB50051-2002 " Code for design of chimneys "
Sticky moulding material is handed over to adopt HJF-01D desulphurization plant special-purpose nanometer fiber heavy antisepsis priming paint (TS-II type)
2. HJF-01D desulphurization plant special-purpose nanometer fiber heavy antisepsis interfacial agents adhesive force technical requirement:
Nanofiber high-performance heavy antisepsis metal plastic glass steel composite material technical indicator
。
Accompanying drawing explanation
Fig. 1 is the corrosion principle figure caused by oxygen concentration difference of the present invention;
Fig. 2 is the antirust schematic diagram of nanofiber high-molecular coating;
Fig. 3 is technological process of the present invention;
Fig. 4 is chimney lining structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, summary of the invention is described further:
With reference to shown in Fig. 3, the application of nanofiber heavy-duty anticorrosive composite material in wet desulfurization concrete chimney, described heavy-duty anticorrosive composite material regulates paint, HJF-01D desulphurization plant special-purpose nanometer fiber heavy-duty antiseptic paint solvent composition by interfacial agents, anti-corrosion primer, anticorrosion TS-II type priming paint, alkali-free glass wool cloth, anticorrosion TSM-II type current potential, carries out in the steps below:
(1), inner wall of stack pre-treatment requires 1: root out the former anticorrosive coat of inner wall of stack, repair damaged acidbrick lining, KPI-acid resistant adhesive mortar is adopted to smear whole inner wall of stack to reach surface smoothness of constructing better, construction surface requirements is clean, dry, all macroscopic greases, oil, dirt, lubricant and other pollutant must all remove, without the chemicals of acid-alkali salt soap class;
(2), interfacial agents preparation 2: prepare by Xi'an Hua Jie development in science and technology Co., Ltd HJF-01D desulphurization plant special-purpose nanometer fiber heavy antisepsis interfacial agents by specification;
(3), with interfacial agents pretreatment inner wall of stack 3, at inner wall of stack surface spraying HJF-01J desulfurization special interface agent, spraying build is 10 ~ 20 μm, reach construction pre-treatment requirement, surface cleaning, by interfacial agents solvent clean two times, described interfacial agents solvent is HJF-01D desulphurization plant special-purpose nanometer fiber heavy-duty antiseptic paint solvent, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(4), first is handed over and is sticked into shaped material 4, spraying HJF-01D desulphurization plant special-purpose nanometer heavy antisepsis priming paint, spraying build is 70 ~ 80 μm, manufacture technology requires: application can not have holiday defect to produce, especially repetition coating decoration is carried out for overlap joint platform gap location, to reach reliable antiseptic effect, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(5), composite is handed over and is sticked into shape material formulation 5: prepare by Xi'an Hua Jie development in science and technology Co., Ltd HJF-01D desulphurization plant special-purpose nanometer fiber heavy antisepsis TS-II type priming paint by specification;
(6), second is handed over and is sticked into shaped material 6, spraying nanometer heavy antisepsis TS-II type priming paint, spraying build is 120 ~ 130 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, especially again coating decoration is carried out for overlap joint platform gap location, to reach reliable antiseptic effect, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(7), the 3rd road is handed over and is sticked into shaped material 7, spraying nanometer heavy antisepsis TS-II type priming paint, spraying build is 150 ~ 160 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, especially again coating decoration is carried out, to reach reliable antiseptic effect for overlap joint platform gap location;
(8), first glass fiber composite layer 8, namely alkali-free glass wool cloth is pasted, glass wool cloth specification is that 0.4mm is thick, 4 × 4 × 1000mm, and what wherein 4 × 4 × 1000mm referred to is glass wool cloth grid is 4 mm × 4 mm, fabric width is 1000mm, after 3rd road spraying nanometer heavy antisepsis TS-II type priming paint, sticking glass silk cloth in 5 minutes, and grind crowded glass wool cloth surface with solid roll back and forth along pasting direction simultaneously, make coating ooze out glass wool cloth surface, get rid of internal residual air; In temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(9), the 4th road hands over and sticks into shaped material 9, spraying nanometer heavy antisepsis TS-II type priming paint, and spraying build is 150 ~ 160 μm, manufacture technology require be: construct in strict accordance with technological requirement, can not holiday;
(10), second glass fiber composite layer 10, i.e. alkali-free glass wool cloth, glass wool cloth specification is that 0.4mm is thick, 4 × 4 × 1000mm, and what wherein 4 × 4 × 1000mm referred to is glass wool cloth grid is 4 mm × 4 mm, fabric width is 1000mm, after 4th road spraying nanometer heavy antisepsis TS-II type priming paint, sticking glass silk cloth in 5 minutes, and grind crowded glass wool cloth surface with solid roll back and forth along pasting direction simultaneously, make coating ooze out glass wool cloth surface, get rid of internal residual air; In temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(11), the 5th road hands over and sticks into shaped material 11, spraying nanometer heavy antisepsis TS-II type priming paint, and spraying build is 150 ~ 160 μm, manufacture technology require be: construct in strict accordance with technological requirement, can not holiday;
(12), the 3rd road glass fiber composite layer 12, i.e. alkali-free glass wool cloth, glass wool cloth specification is that 0.4mm is thick, 4 × 4 × 1000mm, and what wherein 4 × 4 × 1000mm referred to is glass wool cloth grid is 4 mm × 4 mm, fabric width is 1000mm, after 5th road spraying nanometer heavy antisepsis priming paint, sticking glass silk cloth in 5 minutes, and grind crowded glass wool cloth surface with solid roll back and forth along pasting direction simultaneously, make coating ooze out glass wool cloth surface, get rid of internal residual air; In temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(13), the 6th road is handed over and is sticked into shaped material 13, spraying HJF-01D desulphurization plant special-purpose nanometer heavy antisepsis TS-II type priming paint, spraying build is 150 ~ 160 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(14), the 7th road is handed over and is sticked into shaped material 14, spraying HJF-01D desulphurization plant special-purpose nanometer heavy antisepsis TS-II type priming paint, spraying build is 100 ~ 110 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(15), HJF-01D desulphurization plant special-purpose nanometer fiber heavy antisepsis current potential regulates the preparation of paint 15 by specification;
(16), the 8th road current potential regulates material 16, spraying HJF-01M desulphurization plant special-purpose nanometer heavy antisepsis TSM-II type current potential regulates paint, spraying build is 100 ~ 110 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 7 ~ 10 days;
(17), total coating thickness, spraying dry film gross thickness is 1000 ~ 1090 μm, and finished product is nanofiber high-performance heavy antisepsis flexible glass steel plastic-metal cylinder.
Heavy antisepsis basic principle is introduced:
Metal material surface is owing to being subject to the chemistry of surrounding medium (air, high temperature, fused salt, non-water or water-bearing media) or electrochemical action and the change of state occurring and is converted into cenotype, thus making metal material be subjected to destroy, this phenomenon is referred to as metal erosion.Metal erosion is a spontaneous process, and very serious.
Metal erosion can be divided into following several types:
1. electrochemical corrosion.The corrosion that metal forms battery in aqueous and causes is topmost research object in anticorrosion field.
2. chemical attack.The such as high-temperature oxydation of iron and steel fire door, and anhydrous solution forms battery.
3. biological corrosion.The bacterial corrosion of such as underground buried tube.
By its corrosion product type, metal erosion can be divided into again following two kinds:
1. film-forming type.During as aluminum oxidation, generate aluminum oxide film, the further oxidation of metal has been delayed in resistance.The oxygen of metal when slightly high-temperature and in air reacts and generates oxidation film, when rete is very thin, oxygen can easily through, be oxidized the speed that film is thickened and have nothing to do with film thickness and be constant.
2. not film-forming type.Such as steel plate is in salt solution, the Fe that anode produces
2+can not film forming on the spot, must meet leaving anode place the OH that negative electrode produces.Ion precipitation becomes Fe (OH)
2, then be oxidized to iron rust FeOOH at skin, or Fe
20
3.nH
20, the further corrosion of film barrier metal closely can not be generated on steel face.
Electrochemical corrosion can be summarized as following 3 points
1, metal material can only be caused to destroy and the short circuit galvanic cell of useful work can not be made to external world.
2, the power of corrosion cell effect is from the chemical affinity of corrosion reaction.
3, in corrosion cell, the equilibrium potential that a kind of equilibrium potential of cathodic reduction reaction of material is reacted higher than the anodic solution of the metal of corrosion failure must be had at least.
In aqueous, due to the potential difference of different metal, battery can be produced.Even if at same metallic plate, because the difference of its local internal stress, the difference of composition of weld line, concentration of electrolyte solutions are poor, in temperature difference, solution, difference in oxygen concentration etc., all can produce potential difference and cause corrosion.
For steel plate, corrosion cell reaction is:
Anode: Fe → Fe
2++ 2e
Fe
2+→Fe
3++e
3Fe
2++4 H
20→Fe
30
4+8H
++2e
Negative electrode: 2H
++ 2e → 2H → H
2(evolving hydrogen reaction of acid solution)
0
2+ 4H
++ 2e → 2H
20 (oxygen reduction reaction of acid solution)
0
2+ 2H
20+4e → 40H (oxygen reduction reaction in neutral or alkaline medium)
Fe
3++ 30H → Fe (0H)
3(corrosion product)
Oxygen reduction reaction in acidity, neutrality, alkaline medium is most important reaction for anticorrosive coating, all belongs to this type of in the corrosion of general atmosphere and marine environment.Due at the alkalogenic OH in negative electrode position.Ion, can make grease type, the saponification of alkyd type paint film peels off.In addition, because this reaction must be participated in by aerobic, and very low at seawater depths oxygen concentration, therefore metal erosion reaction is slowly.Daily some corrosion seen is because oxygen concentration difference causes, as under rivet, rusty scale is inferior all because oxygen supply becomes anode less.Dew on steel plate drips, and outer oxygen supply is many and form negative electrode, and Central oxygen-supply is few and become anode, and corrosion pit as shown in Figure 1.
The corrosion caused by oxygen concentration difference shown in Fig. 1
The driving force of corrosion cell is two interelectrode potential difference △ E.So the corrosion current of this battery is
R in formula
a---anode resistance;
R
cone cathode resistor
R
e---electrolyte solution resistance;
R
w---external circuit resistance.
Corrosion current is larger, and corrosion rate is faster.
The protection of metal erosion
In order to reduce corrosion, must corrosion current be reduced, at original E
c-E
ewhen constant, resistance control S rj (excellent thick-layer paint film), anodic control (anodic passivity), cathodic control (retardance cathode reaction) can be adopted.Also can take to have concurrently anodic control, resistance controls and the Hybrid mode of cathodic control, carry out control corrosion rate.
People take many measures to reduce the loss of corrosion, but so far still with organic coating be the most effective, most economical, application the most general.Coating is a kind of chemical materials; be coated on object plane and can protect it not by the erosion of environment; also can give (as car paint) attractive in appearance, livery (Chinese reds as bay mechanical hazard parts), camouflage (as weapons such as battlebuses) etc. simultaneously; and coating decoration is convenient; large-scale baker need not be needed as enamel; plating needs the equipment such as electroplating bath, also only need not limit the use of under water as cathodic protection, submergence position, underground.Coating object can be as big as bridge spanning the sea, drilling platforms, little of bicycle, tin can etc., so range of application is wide; And maintenance coating is convenient, is far from enamel, plating can be compared.The coating of very thin only part millimeters thick, plays etch-proof effect really effectively.
Usually, the coating of rich zinc and crome metal, copper is traditional anti-corrosion of metal material, but these anti-corrosion of metal materials have certain limitation in environmental protection, resource and cost etc.Therefore, explore the novel anticorrosion material green, cost is low and there is considerable economic and social benefit.
Nano material refers to the material of the characteristic size of material component in 1-100nm scope.When the size of a particulate little to nanometer scale time, its microstructure and properties had both been different from the microsystem of atom, molecule, was also different from the bulky grain material meta system of display eigen character, but between the transition system of therebetween.Nanoparticle size is little, and specific area is large, has very high surface energy, thus has a significant impact its chemical property.Experiment proves, particle dispersion degree is brought up to a certain degree, and along with the reduction of particle diameter, the ratio of the atomicity and total atom number that are positioned at particle surface sharply increases, and when particle diameter reduces to 5nm, surface atom proportion can reach 50%.Because surface atom number increases, in particulate, atomicity reduces, and the electron energy level in enable band divides, the level spacing (1 × 12 after division
-2-1 × 10
-5eV).Nano material has small-size effect, surface-interface effect, quantum size effect and macro quanta tunnel effect due to himself structural feature, thus compared with the conventional material of same component, in catalysis, optics, magnetic, mechanics etc., there is many unusual performances, in heavy antisepsis, demonstrate good development prospect.
The HJF-01 nanofiber heavy-duty anticorrosive coating that the present invention adopts Xi'an Hua Jie Sci.&Tech Developing Co., Ltd. to produce hands over sticky moulding material as wet desulfurization concrete chimney special-purpose nanometer fiber high-performance heavy-duty anticorrosive composite material, with alkali-free glass wool cloth compound, form wet desulfurization concrete chimney special-purpose nanometer fiber high-performance heavy antisepsis metal plastic glass steel composite material, sticky moulding material is handed over to contain the multifunctional nano series macromolecular fibre material of core/shell structure, shape is in threadiness, particle diameter is 40 ~ 80nm, length is 2 ~ 3 μm, and electrical conductivity is 13s/cm.
In heavily antirust.Nanoparticle size is little; specific area is large, and have very high surface energy, this material can form one deck invisible binary interface diaphragm with metal surface; this binary interface is under water or salting liquid effect; make metal anode be in purifying current potential, metal surface can be made to form fine and close oxide passivation layer, there is anodic protection effect; after anodic protection; nano-macromolecule material, serves as catalyst, changes into this chemical reaction of rust to disturb metal oxygen.First draw electronics from metal, then it is passed in oxygen.These two steps can form one deck pure-oxide to stop corrosion.
Nanofiber macromolecular material, can form fine and close intercommunication IPN conductive network structure, corrosion of metal current potential is raised (raising 223mv), corrosion current close decline 173.2 μ A/cm
2, corrosion electric current density reduces greatly, and the condition that corrosion is occurred and difficulty improve, and corrosion not easily occurs.
Owing to forming fine and close intercommunication IPN conductive network structure, electronics moves to coating surface, and redox reaction occurs in the outer surface of paint, instead of occurs in metal surface, makes reaction and metal form space and is separated, and protection metal is not corroded.Multifunctional nano macromolecular material, in preservation process, have the advantage of reversible oxidation ← → reduction characteristic, not loss, anti-corrosion function can for 50 years;
Binary interface can reduce again the surface tension of metal material greatly simultaneously, makes the surface energy of material be reduced to 10 ~ 15mJ/m
3, reach material surface modifying, acid, alkali, salt, water vapour and nuisance are not easily bonding with surface, make material surface have the erosion to metal surface of acid-proof, alkali, salt, water vapour and nuisance, reach the function of high-performance antirust, anti-corrosive;
Nano-high molecule fibrous material is highly stable to acid, alkali, salt, water vapour and nuisance, the specific area large due to it and special geometry, fine and close separation layer can be formed, effectively can intercept the erosion to metal surface of acid, alkali, salt, water vapour and nuisance.Nanofiber macromolecular material and resin can form metallo-plastic, the characteristics such as acidproof, alkaline-resisting, the salt tolerant of overlength, it is high-performance rush-resisting material of new generation, and improve the ageing resistance of coating, make the large raising of the colour fasteness to sunlight of coating, painting color can be made to keep permanent bright-coloured constant, there is unprecedented functional stabilization.
" scientific and technical innovation, material is first ", the Anticorrosion of wet desulfurization concrete chimney, due to the appearance of nanofiber heavy-duty anticorrosive new material, makes this problem be expected to be solved; Its design central principle is: the functions such as acidproof, alkaline-resisting, the salt tolerant utilizing nano anti-corrosive material superpower, form wet desulfurization concrete chimney special-purpose nanometer fiber high-performance heavy antisepsis metal plastic glass steel composite material, copy the principle of titanium alloy liner, the substantive distinguishing features that the present invention gives prominence to and significant progressive be to build " a flexible glass steel plastic-metal cylinder " be made up of nanometer heavy anticorrosive material at concrete desulfuration chimney inwall, this plastic-metal cylinder thus effectively stop acidic liquid to the corrosion of inner wall of stack; Its anti-corrosion function can compare favourably with titanium alloy completely, even more superior, and under effective anticorrosion time limit reaches the prerequisite of 20 years, cost is only 1/3 ~ 1/4 of titanium alloy.
Lot of experimental data shows, the appearance of this novel nano fiber Anti-corrosion glass steel composite material, completely likely changes the general layout of the anticorrosion means of current desulfuration chimney, becomes the most effectual way solving this difficult problem.
Material itself, not containing heavy metals such as Zn, Cr, Pb, has excellent environment-friendly function;
This material is novel high-tech environment-friendly materials, nontoxic, harmless, tasteless, environmental protection, and workmen is healthy in protection.After surface treatment the key technical indexes reach and considerably beyond:
1, GB50051-2002 " Code for design of chimneys "
2, DL/T 901-2004 " Chimney in Fossil Power Plant (flue) inside lining anti-corrosive material "
3, GB50078-2008 " chimney works construction inspection rules "
Below the composite composition used in nanofiber heavy-duty anticorrosive composite material and the application in wet desulfurization concrete chimney and composite preparation are elaborated:
1, form:
Wet desulfurization concrete chimney special-purpose nanometer fiber high-performance heavy antisepsis metal plastic glass steel composite material sticks into shaped material and alkali-free glass wool cloth by friendship and forms and be composited.Friendship sticks into shaped material and regulates paint, curing agent, organic solvent to form (above material is produced and the product of public offering by Xi'an Hua Jie development in science and technology Co., Ltd) by HJF-01D desulphurization plant special-purpose nanometer fiber heavy antisepsis priming paint (TS-II type), HJF-01D desulphurization plant special-purpose nanometer fiber heavy antisepsis interfacial agents, HJF-01D desulphurization plant special-purpose nanometer fiber heavy antisepsis current potential, described curing agent refer to product itself supporting product, organic solvent refers to HJF-01D desulphurization plant special-purpose nanometer fiber heavy-duty antiseptic paint solvent (product itself is supporting).
2, material formulation
1. interfacial agents preparation: prepare by Xi'an Hua Jie development in science and technology Co., Ltd HJF-01D desulphurization plant special-purpose nanometer fiber heavy antisepsis interfacial agents description.
2. composite is handed over and is sticked into shape material formulation: prepare by Xi'an Hua Jie development in science and technology Co., Ltd HJF-01D desulphurization plant special-purpose nanometer fiber heavy antisepsis TS-II type priming paint description.
3. HJF-01D desulphurization plant special-purpose nanometer fiber heavy antisepsis current potential regulates paint by the description preparation of Xi'an Hua Jie development in science and technology Co., Ltd.
4. alkali-free glass wool cloth specification: 0.4mm is thick, 4 × 4 × 1000mm
Fig. 4 is chimney lining structural representation of the present invention, this chimney lining structure spray on concrete surface respectively successively first HJF anti-corrosion primer, second TS-II type high temperature priming paint, sticking glass silk cloth enhancement Layer, spraying the 3rd road TS-II type high temperature priming paint, sticking glass silk cloth enhancement Layer, spraying the 4th road TS-II type high temperature priming paint, sticking glass silk cloth enhancement Layer, spraying the 5th road TS-II type priming paint, spraying the 6th road TS-II type priming paint, spraying the 7th road TSM-II type current potential regulate paint superposition form.(glass wool cloth enhancement Layer, according to the requirement of corrosive environment and corrosion-resistant grade, can do one ~ six layer)
Surface treatment requirement
1, early stage process
In order to ensure that coat system performs to optimum performance, single-cylinder type reinforced concrete chimney inner surface, before construction, first must carry out high pressure water cleaning process to inner wall of stack, removes cigarette ash and attachment old coating loosely.After substrate surface bone dry, power tool is adopted to polish to damaged area fault plane, the slope requirement of fault plane polishing≤15 degree.If there is loosening structure, local stiffening must be re-started.Rational deployment must be carried out, so that subsequent construction to ventilation, cleaner before polishing.
,concrete chimney inner surface requires the old corrosion-inhibiting coating only removing attaching surface, exposes acidproof brick surface, is sure not to carry out inject process, in order to avoid cause the destruction of acidbrick lining layer to local for a long time.The acidbrick lining surface preparing to paint after shot blastinog will keep cleaning, dry, without grease, until the spraying of prime paint.
3, the substrate surface amount of dust preparing to carry out spraying application after surface treatment is less than 3 grades of regulation in GB/T 18570.3 (ISO 8502-3), and keeps roughness and clean-up performance until the spraying of prime paint.
4, the present invention is to the requirement of material
1., the selection of moulding material, packing material is glued in the anticorrosion friendship of nanometer high-property.Whether material is highly stable to acid, alkali, salt, water vapour and nuisance, can form nanofiber high-performance heavy antisepsis metal plastic glass steel composite material, protects it not by the erosion of environment, plays the key of iris action;
2., heavy antisepsis metal plastic glass steel composite material layer, fine and close intercommunication IPN conductive network structure can be formed, corrosion of metal current potential is raised (raising 223mv), corrosion current close decline 173.2 μ A/cm
2, corrosion electric current density reduces greatly, and the condition that corrosion is occurred and difficulty improve, and corrosion not easily occurs.There is anodic protection effect, after anodic protection, owing to forming fine and close intercommunication IPN conductive network structure; electronics moves to coating surface, and redox reaction occurs in the outer surface of paint, instead of occurs in metal surface; make reaction and metal form space to be separated, protection metal is not corroded.
3., nanofiber heavy-duty anticorrosive metal plastic glass steel composite material structural design, be one of key of formula.
4., the use of nanofiber interfacial agents, be crucial to raising material at the adhesive force at interface.
5., nanofiber heavy-duty anticorrosive metal plastic glass steel composite material elongation at break, be greater than acidproof brick and acidproof friendship hand over mud to build layer limiting temperature situation by laying bricks or stones under maximum displacement value, the elongation at break of nanofiber heavy-duty anticorrosive metal plastic glass steel composite material is 62.9%, build the maximum displacement value under layer limiting temperature situation by laying bricks or stones considerably beyond acidproof brick and acidproof friendship friendship mud, the novel anticorrosion system of the design can meet operating the produced linear extendible change of chimney.
embodiment 1
Nanofiber heavy-duty anticorrosive composite material and the application in wet desulfurization concrete chimney, carry out in the steps below:
(1), inner wall of stack pre-treatment requires 1: root out the former anticorrosive coat of inner wall of stack, repair damaged acidbrick lining, KPI-acid resistant adhesive mortar is adopted to smear whole inner wall of stack to reach surface smoothness of constructing better, construction surface requirements is clean, dry, all macroscopic greases, oil, dirt, lubricant and other pollutant must all remove, without the chemicals of acid-alkali salt soap class;
(2), interfacial agents preparation 2: by the preparation of Xi'an Hua Jieaohai new material company HJF-01D desulphurization plant special-purpose nanometer fiber heavy antisepsis interfacial agents by specification, its configuration proportion is: interfacial agents: curing agent: solvent=5:1:6
(3), with interfacial agents pretreatment inner wall of stack 3, at inner wall of stack surface spraying HJF-01J desulfurization special interface agent, spraying build is 10 μm, reach construction pre-treatment requirement, surface cleaning, by interfacial agents solvent clean two times, described interfacial agents solvent is HJF-01D desulphurization plant special-purpose nanometer fiber heavy-duty antiseptic paint solvent) (product itself is supporting), in temperature 70 C baking and curing or spontaneous curing 16 hours;
(4), first is handed over and is sticked into shaped material 4, spraying HJF-01D desulphurization plant special-purpose nanometer heavy antisepsis priming paint, spraying build is 75 μm, manufacture technology requires: application can not have holiday defect to produce, especially repetition coating decoration is carried out for overlap joint platform gap location, to reach reliable antiseptic effect, in temperature 70 C baking and curing or spontaneous curing 16 hours;
(5), composite is handed over and is sticked into shape material formulation 5: prepare by Xi'an Hua Jieaohai new material company HJF-01D desulphurization plant special-purpose nanometer fiber heavy antisepsis TS-II type priming paint by specification, described HJF-01D desulphurization plant special-purpose nanometer heavy antisepsis priming paint, its configuration proportion is: priming paint: curing agent: solvent=5:1:0.2
(6), second is handed over and is sticked into shaped material 6, spraying nanometer heavy antisepsis TS-II type priming paint, spraying build is 125 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, especially again coating decoration is carried out for overlap joint platform gap location, to reach reliable antiseptic effect, in temperature 75 DEG C of baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(7), the 3rd road is handed over and is sticked into shaped material 7, spraying nanometer heavy antisepsis TS-II type priming paint, spraying build is 150 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, especially again coating decoration is carried out, to reach reliable antiseptic effect for overlap joint platform gap location;
(8), first glass fiber composite layer 8, namely alkali-free glass wool cloth is pasted, glass wool cloth specification is that 0.4mm is thick, 4 × 4 × 1000mm, and what wherein 4 × 4 × 1000mm referred to is glass wool cloth grid is 4 mm × 4 mm, fabric width is 1000mm, after 3rd road spraying nanometer heavy antisepsis TS-II type priming paint, sticking glass silk cloth in 5 minutes, and grind crowded glass wool cloth surface with solid roll back and forth along pasting direction simultaneously, make coating ooze out glass wool cloth surface, get rid of internal residual air; In temperature 75 DEG C of baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(9), the 4th road hands over and sticks into shaped material 9, spraying nanometer heavy antisepsis TS-II type priming paint, and spraying build is 150 μm, manufacture technology require be: construct in strict accordance with technological requirement, can not holiday;
(10), second glass fiber composite layer 10, i.e. alkali-free glass wool cloth, glass wool cloth specification is that 0.4mm is thick, 4 × 4 × 1000mm, and what wherein 4 × 4 × 1000mm referred to is glass wool cloth grid is 4 mm × 4 mm, fabric width is 1000mm, after 4th road spraying nanometer heavy antisepsis TS-II type priming paint, sticking glass silk cloth in 5 minutes, and grind crowded glass wool cloth surface with solid roll back and forth along pasting direction simultaneously, make coating ooze out glass wool cloth surface, get rid of internal residual air; In temperature 75 DEG C of baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(11), the 5th road hands over and sticks into shaped material 11, spraying nanometer heavy antisepsis TS-II type priming paint, and spraying build is 150 μm, manufacture technology require be: construct in strict accordance with technological requirement, can not holiday;
(12), the 3rd road glass fiber composite layer 12, i.e. alkali-free glass wool cloth, glass wool cloth specification is that 0.4mm is thick, 4 × 4 × 1000mm, and what wherein 4 × 4 × 1000mm referred to is glass wool cloth grid is 4 mm × 4 mm, fabric width is 1000mm, after 5th road spraying nanometer heavy antisepsis priming paint, sticking glass silk cloth in 5 minutes, and grind crowded glass wool cloth surface with solid roll back and forth along pasting direction simultaneously, make coating ooze out glass wool cloth surface, get rid of internal residual air; In temperature 75 DEG C of baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(13), the 6th road is handed over and is sticked into shaped material 13, spraying HJF-01D desulphurization plant special-purpose nanometer heavy antisepsis TS-II type priming paint, spraying build is 150 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, in temperature 70 C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(14), the 7th road is handed over and is sticked into shaped material 14, spraying HJF-01D desulphurization plant special-purpose nanometer heavy antisepsis TS-II type priming paint, spraying build is 100 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, in temperature 65 DEG C of baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(15), HJF-01D desulphurization plant special-purpose nanometer fiber heavy antisepsis current potential regulates the preparation of paint 15 by specification, described HJF-01D desulphurization plant special-purpose nanometer fiber heavy antisepsis current potential regulates paint, and its configuration proportion is: current potential regulates paint: curing agent: solvent=5:1:0.15
(16), the 8th road current potential regulates material 16, spraying HJF-01M desulphurization plant special-purpose nanometer heavy antisepsis TSM-II type current potential regulates paint, spraying build is 100 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, in temperature 65 DEG C of baking and curing or more than 10 DEG C spontaneous curings 7 ~ 10 days;
(17), total coating thickness, spraying dry film gross thickness is 1000 ~ 1090 μm, and finished product is nanofiber high-performance heavy antisepsis flexible glass steel plastic-metal cylinder.
Described curing agent refers to the supporting curing agent of product itself, and organic solvent is HJF-01D desulphurization plant special-purpose nanometer fiber heavy-duty antiseptic paint solvent, the solvent that product itself is supporting.
Claims (1)
1. the application of nanofiber heavy-duty anticorrosive composite material in wet desulfurization concrete chimney, is characterized in that this application is carried out in the steps below:
(1), inner wall of stack pre-treatment requires: root out the former anticorrosive coat of inner wall of stack, repair damaged acidbrick lining, KPI-acid resistant adhesive mortar is adopted to smear whole inner wall of stack to reach surface smoothness of constructing better, construction surface requirements is clean, dry, all macroscopic greases, dirt, lubricant and other pollutant must all remove, without the chemicals of acid-alkali salt soap class;
(2), with interfacial agents pretreatment inner wall of stack, at inner wall of stack surface spraying HJF-01J desulfurization special interface agent, spraying build is 10 ~ 20 μm, reach construction pre-treatment requirement, surface cleaning, by interfacial agents solvent clean two times, described interfacial agents solvent is HJF-01D desulphurization plant special-purpose nanometer fiber heavy-duty antiseptic paint solvent, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(3), first is handed over and is sticked into shaped material, spraying HJF-01D desulphurization plant special-purpose nanometer heavy antisepsis priming paint, spraying build is 70 ~ 80 μm, manufacture technology requires: application can not have holiday defect to produce, especially repetition coating decoration is carried out for overlap joint platform gap location, to reach reliable antiseptic effect, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(4), second is handed over and is sticked into shaped material, spraying nanometer heavy antisepsis TS-II type priming paint, spraying build is 120 ~ 130 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, especially again coating decoration is carried out for overlap joint platform gap location, to reach reliable antiseptic effect, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(5), the 3rd road is handed over and is sticked into shaped material, spraying nanometer heavy antisepsis TS-II type priming paint, spraying build is 150 ~ 160 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, especially again coating decoration is carried out, to reach reliable antiseptic effect for overlap joint platform gap location;
(6), first glass fiber composite layer, namely alkali-free glass wool cloth is pasted, glass wool cloth specification is that 0.4mm is thick, 4 × 4 × 1000mm, and what wherein 4 × 4 × 1000mm referred to is glass wool cloth grid is 4 mm × 4 mm, fabric width is 1000mm, after 3rd road spraying nanometer heavy antisepsis TS-II type priming paint, sticking glass silk cloth in 5 minutes, and grind crowded glass wool cloth surface with solid roll back and forth along pasting direction simultaneously, make coating ooze out glass wool cloth surface, get rid of internal residual air; In temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(7), the 4th road hands over and sticks into shaped material, spraying nanometer heavy antisepsis TS-II type priming paint, and spraying build is 150 ~ 160 μm, manufacture technology require be: construct in strict accordance with technological requirement, can not holiday;
(8), second glass fiber composite layer, i.e. alkali-free glass wool cloth, glass wool cloth specification is that 0.4mm is thick, 4 × 4 × 1000mm, and what wherein 4 × 4 × 1000mm referred to is glass wool cloth grid is 4 mm × 4 mm, fabric width is 1000mm, after 4th road spraying nanometer heavy antisepsis TS-II type priming paint, sticking glass silk cloth in 5 minutes, and grind crowded glass wool cloth surface with solid roll back and forth along pasting direction simultaneously, make coating ooze out glass wool cloth surface, get rid of internal residual air; In temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(9), the 5th road hands over and sticks into shaped material, spraying nanometer heavy antisepsis TS-II type priming paint, and spraying build is 150 ~ 160 μm, manufacture technology require be: construct in strict accordance with technological requirement, can not holiday;
(10), the 3rd road glass fiber composite layer, i.e. alkali-free glass wool cloth, glass wool cloth specification is that 0.4mm is thick, 4 × 4 × 1000mm, and what wherein 4 × 4 × 1000mm referred to is glass wool cloth grid is 4 mm × 4 mm, fabric width is 1000mm, 5th road spraying nanometer heavy antisepsis TS-II type priming paint, sticking glass silk cloth in 5 minutes, and grind crowded glass wool cloth surface with solid roll back and forth along pasting direction simultaneously, make coating ooze out glass wool cloth surface, get rid of internal residual air; In temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(11), the 6th road is handed over and is sticked into shaped material, spraying HJF-01D desulphurization plant special-purpose nanometer heavy antisepsis TS-II type priming paint, spraying build is 150 ~ 160 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(12), the 7th road is handed over and is sticked into shaped material, spraying HJF-01D desulphurization plant special-purpose nanometer heavy antisepsis TS-II type priming paint, spraying build is 100 ~ 110 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 16 hours;
(13), the 8th road current potential regulates material, spraying HJF-01M desulphurization plant special-purpose nanometer heavy antisepsis TSM-II type current potential regulates paint, spraying build is 100 ~ 110 μm, manufacture technology requires: construct in strict accordance with technological requirement, can not holiday, in temperature 60 ° ~ 80 DEG C baking and curing or more than 10 DEG C spontaneous curings 7 ~ 10 days;
(14), total coating thickness, spraying dry film gross thickness is 1000 ~ 1090 μm, and finished product is nanofiber high-performance heavy antisepsis flexible glass steel plastic-metal cylinder.
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| CN106891601A (en) * | 2017-02-23 | 2017-06-27 | 河北宏勃防腐工程有限公司 | The chimney inside T-shaped reinforcing anticorrosion process of composite coating |
| CN110385247A (en) * | 2018-04-19 | 2019-10-29 | 无锡市华通环保设备有限公司 | A kind of cigarette air channel barrier door nanometer heavy antisepsis technique |
| CN111927192A (en) * | 2020-06-08 | 2020-11-13 | 山东清硕环境科技有限公司 | Anticorrosion construction process for concrete or brick-based chimney |
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