CN203940449U - The unsettled jockey of flexible expandable antiseepage corrosion-resistant at the flexible position of chimney bracket - Google Patents

Abstract

The utility model discloses the unsettled jockey of flexible expandable antiseepage corrosion-resistant at the flexible position of chimney bracket.The acidbrick lining layer surface, top at the flexible position of bracket applies the acid resistant adhesive mortar with arc, acid resistant adhesive mortar lower end is connected with flexiplast metal level one end, flexiplast metal level one end is connected with acidbrick lining layer with setscrew by stainless steel press strip, metal level is around unsettled another acidbrick lining layer one end that be connected in, acidbrick lining layer surface, another acidbrick lining layer surface applies one deck acid resistant adhesive mortar with arc, unsettled arc is made in the flexible glass steel plastic-metal layer lower left corner, flexible glass steel plastic-metal layer two ends and flexible acidproof aramid fiber plastic-metal layer camber line unsettled connection of two ends, there is excellent adhesive force, impact resistance and wearability, life-extending, eliminate safe hidden trouble, solved leakage problems, save time, laborsaving, nontoxic, environmental protection, be widely used in the transformation of various chimneys and the connection of newly-built chimney or skyscraper subsiding crack.

Description

The unsettled jockey of flexible expandable antiseepage corrosion-resistant at the flexible position of chimney bracket

Technical field

The utility model relates to chemical nano composite material, is specifically related to the unsettled jockey of flexible expandable antiseepage corrosion-resistant at the flexible position of chimney bracket.

Background technology

As administering air environmental pollution most importantly desulfurization and the denitration transformation of power plant and steam power plant, this transformation has now become rules, forces in China to carry out.Thousands of electricity power enterprises of China have all suffered from same problem, and that will be transformed into desulfuration chimney by dry type chimney exactly; This seems simple transformation material implication and huge difficulty and risk, its main cause can briefly be summed up as: when flue-gas temperature is down to 50-80 ℃ after wet desulphurization denitration by past 180-220 ℃, the sulfur-containing smoke gas of high temperature drying converts to for water at low temperature steam, the negative pressuren zone of chimney inside is reduced to 50-80 rice by about 160-170 rice simultaneously.When containing with SO ₃be main acidic liquid while flowing downward along inner wall of stack, by inner wall of stack being produced to huge corrosiveness, even can cause in a short period of time chimney to topple over, cause security incident beyond imagination.

The inner normal operating temperature of chimney after desulfurization and denitration between 50～100 ℃, along with temperature reduce, smoke moisture increases greatly; Acid dew-point temperature due to flue gas reduces simultaneously, and inner wall of stack is dewfall very easily, the SO of remnants in flue gas ₃the rear formation of dissolving corrosivity, the dilute sulfuric acid solution that permeability is very strong, cause very strong corrosivity to chimney structure.Chimney in use finds that chimney outside layer wall exists many places Seepage in various degree, and sepage forms crystallization on layer body surface, forms bulk icicle winter.Former chimney coated inside has lost antiseptic effect.

Bracket position belongs to the privileged sites of chimney anticorrosion, and under the state of colding and heat succeed each other, the retractility at this position is larger, stress is concentrated, and collapsing length is 1.8cm to the maximum, the most easily causes anticorrosive coat stress cracking, when hydrops state, this position acid accumulator penetration is easier to, and corrodes more serious.Once chimney anticorrosion transformation completes and puts into operation, unless acid solution seepage is caught by our naked eyes through concrete chimney outer wall, detect anticorrosive coat and whether occur it being extremely almost impossible, in other words, when we find that anticorrosive coat goes wrong, show that chimney is to the precarious position that may topple.

The conventional anticorrosion means of desulfuration chimney and the problem facing

From present situation, the technological means that can effectively prevent desulfurization after funnel inner wall corrosion is very limited, and common method comprises: titanium alloy liner, stainless steel inner lining, steel layer liner add anticorrosive paint, adopt the bonding glass block of acid resistant adhesive mortar and glass flake etc.; In these methods, the titanium alloy liner high except cost has good anti-corrosion function, objectively says, the anticorrosion time that other comparatively economic anticorrosion means can play is very limited, almost cannot be over 1 year.

The reason that 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 have flexible gap, current anticorrosion means cannot solve the etching problem that gap location exists, and cause SO ₃the dilute sulfuric acid solution forming after dissolving, through gap, forms corrosion to inner wall of stack, and penetrates very soon chimney layer wall, causes serious potential safety hazard;

(2), because acidproof brick is different from the coefficient of expansion of acid resistant adhesive mortar as adhesive, after the temperature through after a while alternately changes, between the two, will inevitably there is gap, SO ₃dilute sulfuric acid solution will pass through these trickle crevice corrosion inner wall of stack.

(3), in order to address the above problem, traditional anti-corrosion method is had at acidproof brick surface sticking glass scale, to prevent that acidic liquid from entering gap; But the coefficient of expansion as the glass flake of rigid material itself is different from acidproof brick, in addition adhesive force limited (being approximately only 0.4～1.0MPa) between the two, alternately variation and the passing of time along with temperature, cause glass flake layer seepage and come off in a large number, thereby lose anti-corrosion function, the most easily cause that anticorrosive coat stress cracking forms seepage.

Xi'an Hua Jie Sci.&Tech Developing Co., Ltd. has applied for " the heavy antisepsis composite material of nanofiber and the application in wet desulphurization concrete chimney " on 07 26th, 2013, the application of this patent is all for the envelope of whole chimney lining, does not examine the flexible of filter chimney bracket position!

Chimney bracket position belongs to the privileged sites of chimney anticorrosion, and under the state of colding and heat succeed each other, the retractility at this position is larger, and stress is concentrated, and collapsing length is 1.8cm to the maximum, the most easily causes anticorrosive coat stress cracking, must stretch in bracket position; When hydrops state, this position gaps due to flexible, and acid solution is permeated in a large number, corrodes very seriously, has for a long time insurmountable defect.

Summary of the invention

The purpose of this utility model is to provide a kind of simple in structure, easy to make, adopt flexible expandable arc structure, make it have the corrosive power of acidproof, alkaline-resisting, salt tolerant, water vapour and the nuisance of overlength, improve the ageing resistance of material, the heavy anticorrosion and functional stabilization of high-performance.Nontoxic, harmless, tasteless, environmental protection, the unsettled jockey of flexible expandable antiseepage corrosion-resistant at the flexible position of chimney bracket that protection workmen is healthy.

In order to overcome the deficiencies in the prior art, the technical solution of the utility model is to solve like this: the unsettled jockey of flexible expandable antiseepage corrosion-resistant at the flexible position of chimney bracket, this jockey is by flexiplast metal level, stainless steel press strip, setscrew, acidproof brick, acid resistant adhesive mortar forms, special character of the present utility model is that a described acidbrick lining layer surface above the flexible position of bracket applies one deck one acid resistant adhesive mortar with arc, a described acid resistant adhesive mortar lower end is connected with flexiplast metal level one end, described flexiplast metal level two ends by stainless steel press strip and setscrew and acidbrick lining layer be connected, described flexiplast metal level is along unsettled another acid resistant adhesive mortar one end that is connected in of acidbrick lining layer expansion joint outer surface, another acidbrick lining layer surface applies another acid resistant adhesive mortar with arc, unsettled arc is made in the described flexiplast metal level lower left corner, the unsettled integral body that connects in described flexiplast metal level two ends and flexible acidproof aramid fiber plastic-metal layer camber line two ends.

The acidproof aramid fiber plastic-metal of described flexibility layer is flat board or bellows.

The utility model is compared with existing technology, in expansion joint lap-joint, adopts flexible flexible arc structural anticorrosion to process, and has solved the long-term insurmountable leakage problems of expansion joint lap-joint.There is the characteristics such as anti-flexible, high temperature resistant, acidproof, waterproof and anticorrosion.The heavy aseptic technic level of traditional wet desulphurization concrete chimney is significantly improved, effectively solve the current world, the heavy anticorrosion root problem facing of domestic wet desulphurization concrete chimney, economize on resources, antiseptic property is high, environmental protection, for improving China's desulfurization equipment technology level, in the service life that extends equipment, eliminate safe hidden trouble, and inventive point of the present utility model is to have solved the long-term insurmountable leakage problems of expansion joint lap-joint.

The heavy anti-rot plastic metallic composite of wet desulphurization concrete chimney special-purpose nanometer fiber high-performance, copy the principle of titanium alloy liner, at the flexible position of concrete desulfuration chimney bracket, inwall is built a flexible expandable consisting of nanometer heavy anticorrosive material " plastic-metal layer ", collapsing length >=the 2cm of flexible arc, thus the corrosion of acidic liquid to inner wall of stack effectively stoped; Its anti-corrosion function can compare favourably with titanium alloy completely, even more superior, at the anticorrosion time limit of effect, reaches under the prerequisite of 20 years, and cost is only the 1/3-1/4 of titanium alloy.

Can support the use with most of antirust interfaces, during the welding of nanofiber macromolecule, can not produce pernicious gas, efficiently solve the base material that scribbles epoxy zinc-rich paint, when welding, can produce large amount zinc oxide fog, harmful defect.There is excellent adhesive force, impact resistance and wearability.Save time, laborsaving, nontoxic, environmental protection, be widely used in transformation and the newly-built chimney of various chimneys or the connection of skyscraper subsiding crack.

Accompanying drawing explanation

Fig. 1 is the flexible position of bracket schematic diagram;

The corrosion of Fig. 2 for being caused by oxygen concentration difference;

Fig. 3 is the anti-embroidery schematic diagram of nanofiber high-molecular coating;

Fig. 4 is the structural representation of flat of stainless steel;

Fig. 5 is nano composite material process chart;

Fig. 6 is that the flexible position of bracket flexible expandable non-corrosive metal (NCM) layer is connected finished figure with chimney;

Fig. 7 is flexiplast metal-layer structure schematic diagram.

The specific embodiment

Accompanying drawing is embodiment of the present utility model.

Below in conjunction with accompanying drawing, utility model content is described in further detail:

Shown in Fig. 1-Fig. 7, the unsettled jockey of flexible expandable antiseepage corrosion-resistant at the flexible position of chimney bracket, this jockey is by flexiplast metal level, stainless steel press strip, setscrew, acidproof brick, acid resistant adhesive mortar forms, described acidbrick lining layer 8 surface above the flexible position of bracket apply one deck one acid resistant adhesive mortar 1 with arc, described acid resistant adhesive mortar 1 lower end is connected with flexiplast metal level 2 one end, described flexiplast metal level 2 two ends are connected with 8 with acidbrick lining layer 4 with setscrew 7 by stainless steel press strip, described flexiplast metal level 2 is along unsettled another acid resistant adhesive mortar 5 one end that are connected in of acidbrick lining layer 8 expansion joint outer surface, another acidbrick lining layer 4 surfaces apply another acid resistant adhesive mortar 5 with arc, unsettled arc 3 is made in described flexiplast metal level 2 lower left corners, described flexiplast metal level 2 two ends and the flexible acidproof aramid fiber plastic-metal layer 2 unsettled integral body that connects in camber line two ends, described flexiplast metal level 2 and flexible acidproof aramid fiber plastic-metal layer 6 are by gluing moulding material and alkali-free glass wool cloth and gluing moulding material and polyamide fibre cloth compound composition repeatedly, this jockey is owing to being flexible expandable and unsettled, adapt to the flexible of the flexible position of bracket.

The acidproof aramid fiber plastic-metal of described flexibility layer is flat board or bellows.

In sum, the utility model has also been done deep research to following content:

1., wet desulphurization concrete chimney bracket position expansion joint lap-joint, selection, formula, performance, planform, the method for processing and treatment of the heavy antisepsis composite material of development flexible expandable special-purpose nanometer fiber high-performance, under the state of colding and heat succeed each other, composite can vary with temperature automatic telescopic while stretching at bracket position and not break, collapsing length >=2cm, and the corrosive power that has acidproof, alkaline-resisting, salt tolerant, water vapour and the nuisance of overlength, the ageing resistance that improves coating, reaches environmental protection.

2., wet desulphurization concrete chimney bracket position expansion joint lap-joint, the relation of the planform of the heavy anticorrosion flexible expandable composite of nanofiber high-performance and acidproof, alkaline-resisting, salt spray resistance, water vapour and nuisance ability;

3., wet desulphurization concrete chimney bracket position expansion joint lap-joint, the binding strength of the heavy anticorrosion flexible expandable composite of special-purpose nanometer fiber high-performance and chimney inner surface acidproof brick, the powerful research of tension of composite.

4., wet desulphurization concrete chimney bracket position expansion joint lap-joint, the shape combination process research of the heavy anticorrosion flexible expandable composite of special-purpose nanometer fiber high-performance.

5., wet desulphurization concrete chimney bracket position expansion joint lap-joint, the relation of substrate surface treatment technique and antiseptic property;

6., wet desulphurization concrete chimney bracket position expansion joint lap-joint, the heavy anticorrosion flexible expandable composite connecting method of nanofiber high-performance and the research of acidproof anti-leakage performance.

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 > >

Technological innovation and biology barrier route

Basic principle

Metal material surface is owing to being subject to the chemistry of surrounding medium (atmosphere, high temperature, fused salt, non-water or water-bearing media) or state occurs in electrochemical action variation and being converted into cenotype, thereby make 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.Metal forms battery and the corrosion that causes in the aqueous solution, is topmost research object in anticorrosion field.

2., chemical attack.The for example high-temperature oxydation of iron and steel fire door, and anhydrous solution forms battery.

3., biological corrosion.The for example bacterial corrosion of 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 that metal has been delayed in resistance.Metal reacts with airborne oxygen and generates oxidation film when high-temperature slightly, and when rete is very thin, oxygen can easily see through, and oxidation makes speed that film thickens have nothing to do with film thickness and is constant.

2., film-forming type not.For example steel plate is in salt solution, the Fe that anode produces ²⁺film forming on the spot, must meet the OH that negative electrode produces leaving anode place.Ion precipitation becomes Fe (OH) ₂, then be oxidized to iron rust FeOOH at skin, or Fe ₂0 ₃.nH ₂0, can not on steel face, generate the further corrosion of film barrier metal closely.

Electrochemical corrosion can be summarized as following 3 points

1, can only cause metal material to destroy and can not make to external world the short circuit galvanic cell of useful work.

2, the power of corrosion cell effect is from the chemical affinity of corrosion reaction.

3,, in corrosion cell, must have a kind of equilibrium potential of cathodic reduction reaction of material at least higher than the equilibrium potential of the anodic solution reaction of the metal of corrosion failure.

In the aqueous solution, due to the potential difference of different metal, can produce battery.Even at same metallic plate, due to the difference of its local internal stress,, the difference of composition of weld line, concentration of electrolyte solutions are poor, difference in oxygen concentration etc. in temperature difference, solution, all can produce potential difference and cause corrosion.

Take steel plate as example, and corrosion cell reaction is:

Anode: Fe → Fe ²⁺+ 2e

Fe ²⁺→Fe ³⁺+e

3Fe ²⁺+4H 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 neutrality or alkaline medium)

Fe ³⁺+ 30H → Fe (0H) ₃(corrosion product)

Oxygen reduction reaction in acid, neutral, alkaline medium is most important reaction for anticorrosive coating, in the corrosion of general atmosphere and marine environment, all belongs to this type of.Due at the alkalogenic OH in negative electrode position.Ion, can make grease type, the saponification of alkyd type paint film peel off.In addition, because the necessary aerobic participation of this reaction, and very low at seawater depths oxygen concentration, therefore metal erosion reaction is very slow.Daily some corrosion of seeing 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 etch figures being caused by oxygen concentration difference shown in Fig. 2, the driving force of corrosion cell is two interelectrode potential difference △ E.So the corrosion current of this battery is

$I=\frac{\mathrm{\&Delta;E}}{\mathrm{Ra}+\mathrm{Rc}+\mathrm{Re}+\mathrm{Rw}}$

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 reduce corrosion current, at original E _c-E _ein constant situation, can adopt resistance to control S rj (good thick-layer paint film), anodic control (anodic passivity), cathodic control (retardance cathode reaction).Also can take the mixing that has anodic control, resistance control and cathodic control concurrently to control, control corrosion.

People have taked many measures to reduce the loss of corrosion, but so far still with organic coating for the most effective, most economical, application is the most general.Coating is a kind of chemical materials; being coated on object plane to protect it not to be subject to the erosion of environment; also can give (as car paint) attractive in appearance, livery (as the Chinese red of bay mechanical hazard parts), camouflage (as weapons such as battlebuses) etc. simultaneously; and coating decoration is convenient; needn't need large-scale baker as enamel; plating needs the equipment such as electroplating bath, also needn't only limit the use of under water as cathodic protection, underground submergence position.Coating object can be as big as bridge spanning the sea, drilling platforms, little to bicycle, tin can etc., so range of application is wide; And maintenance coating is convenient, is far from enamel, electroplates and can compare.The coating of very thin only part millimeters thick, plays etch-proof effect really effectively.

Conventionally, 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 at aspects such as environmental protection, resource and costs.Therefore, explore the novel anticorrosion material green, cost is low and there is considerable economic and social benefit.

Nano material refers to that the characteristic size of material component is at the material of 1-100nm scope.When the size of a particulate is little during to nanometer scale, its microstructure and properties had both been different from the microsystem of atom, molecule, was also different from the bulky grain material meta system that shows eigen character, but between a transition system between the two.Nanoparticle size is little, and specific area is large, has very high surface energy, thereby its chemical property is had a significant impact.After experiment showed, that particle decentralization is brought up to a certain degree, along with reducing of particle diameter, be positioned at the atomicity of particle surface and the ratio of total atom number sharply increases, when particle diameter is reduced to 5nm, surface atom proportion can reach 50%.Because surface atom number increases, in particulate, atomicity reduces, and the electron energy level enabling in band divides, the level spacing (1 * 12 after division ^-2-1 * 10 ^-5eV).Nano material is because himself structural feature has small-size effect, surface-interface effect, quantum size effect and macro quanta tunnel effect, thereby compare with the conventional material of same component, at aspects such as catalysis, optics, magnetic, mechanics, there are many unusual performances, aspect heavily anticorrosion, demonstrate good development prospect.

The HJF-01 nanofiber anticorrosive paint that this utility model adopts Xi'an Hua Jie Sci.&Tech Developing Co., Ltd. to produce, as the flexible position of the wet desulphurization concrete chimney heavy antisepsis composite material of special-purpose nanometer fiber high-performance, hand over sticky moulding material, the flexible expandable arc length degree of reserved >=2cm, compound with alkali-free glass wool cloth, aramid fiber cloth forms the heavy anticorrosion flexibility of the flexible position of wet desulphurization concrete chimney special-purpose nanometer fiber high-performance, scalable plastic-metal composite material, the multifunctional nano series macromolecular fibre material of handing over sticky moulding material to contain core/shell structure, it is fibrous that shape is, particle diameter 40～80nm, length 2～3 μ m, electrical conductivity 13s/m.

Aspect heavily antirust.Nanoparticle size is little; specific area is large, has very high surface energy, and this material can form the invisible binary of one deck interface diaphragm with metal surface; this binary interface is under water or salting liquid effect; make metal anode in purifying current potential, can make metal surface form fine and close oxide passivation layer, there is anodic protection effect; after anodic protection; nano-macromolecule material, serves as catalyst, to disturb metal oxygen to change into this chemical reaction of rust.First from metal, draw electronics, 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, makes corrosion of metal potential rise (rising 223mv), the close decline 173.2 μ A/cm of corrosion current ², corrosion electric current density reduces greatly, and condition and difficulty that corrosion occurs are improved, and corrosion is difficult for occurring.

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, rather than occurs in metal surface, makes reaction and metal form space separated, and protection metal is not corroded.Multifunctional nano macromolecular material, in anticorrosion process, has the advantage of reversible oxidation ← → reduction characteristic, not loss, and anti-corrosion function can reach 50 years for for a long time;

While binary interface is the surface tension of large reduction metal material again, makes the surface of material can be reduced to 10～15mJ/m ³, reaching material surface modifying, acid, alkali, salt, water vapour and nuisance are difficult for and surface binded, 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, due to its large specific area and special geometry, fine and close separation layer can be formed, the erosion to metal surface of acid, alkali, salt, water vapour and nuisance can be effectively intercepted.Nanofiber macromolecular material and resin can form metallo-plastic, and the characteristic such as acidproof, alkaline-resisting, salt tolerant of overlength, is high-performance rush-resisting material of new generation.And improve the ageing resistance of coating, and make the large raising of colour fasteness to sunlight of coating, can make painting color keep permanent bright-coloured constant, there is unprecedented functional stabilization.

" scientific and technical innovation, material is first ", the Anticorrosion at the flexible position of wet desulphurization concrete chimney, the appearance due to the heavy anticorrosion new material of nanofiber, makes this problem be expected to be solved; Its design central principle is: utilize the functions such as superpower acidproof, alkaline-resisting, the salt tolerant of nano anti-corrosive material, form the heavy anticorrosion flexible expandable plastic-metal composite material of the flexible position of wet desulphurization concrete chimney special-purpose nanometer fiber high-performance, copy the principle of titanium alloy liner, at the flexible position of concrete desulfuration chimney, build " the plastic-metal layer " of a flexible expandable being formed by nanometer heavy anticorrosive material, thereby effectively stop the corrosion of acidic liquid to inner wall of stack; Its anti-corrosion function can compare favourably with titanium alloy completely, even more superior, at the anticorrosion time limit of effect, reaches under the prerequisite of 20 years, and cost is only the 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 that solves this difficult problem.

Material itself, containing heavy metals such as Zn, Cr, Pb, does not have 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:

3.GB50051-2002 < < Code for design of chimneys > >

4.DL/T 901-2004 < < Chimney in Fossil Power Plant (flue) inside lining anti-corrosive material > >

5.GB50078-2008 < < chimney works construction inspection rules > >

The wet desulphurization concrete chimney bracket position of stretching, the heavy anticorrosion flexible expandable plastic-metal composite material formula of nanofiber high-performance and composite technology form:

1. the heavy anticorrosion flexibility of the flexible position of wet desulphurization concrete chimney bracket special-purpose nanometer fiber high-performance, scalable plastic-metal composite material are formed and are composited by gluing moulding material and alkali-free glass wool cloth, polyamide fibre cloth, and junction adopts the fixing reinforcement of the swollen screw of stainless steel press strip Peng.Gluing moulding material regulates paint, curing agent, organic solvent to form (above material is produced by Xi'an Hua Jieaohai new material company) by the heavy anti-corrosion primer (TS-II type) of HJF-01D desulphurization plant special-purpose nanometer fiber, the heavy anticorrosion interfacial agents of HJF-01D desulphurization plant special-purpose nanometer fiber, the heavy anticorrosion current potential of HJF-01D desulphurization plant special-purpose nanometer fiber.

2. material formulation

1., interfacial agents preparation: by the heavy anticorrosion interfacial agents description preparation of the Xi'an HJF-01D of Hua Jieaohai new material company desulphurization plant special-purpose nanometer fiber.

2., composite is handed over and is sticked into shape material formulation: by heavy anti-corrosion primer (TS-II type) the description preparation of the Xi'an HJF-01D of Hua Jieaohai new material company desulphurization plant special-purpose nanometer fiber.

3., the heavy anticorrosion current potential of HJF-01D desulphurization plant special-purpose nanometer fiber regulates the preparation of paint description.

4., alkali-free glass wool cloth specification: 0.4mm is thick, 1 * 1 * 1000mm

5., high-strength, acidproof aramid fiber cloth: aramid filament 300d * 300d; Specification: 72 * 60 * 1200; Intensity 2090Mn.tex-1, initial modulus 77N.tex-1, the 1200N of resistance to bursting strength, 550 ℃ of heatproof degree etc.

6., stainless steel press strip: material 304, specification (mm): the wide x of long x is thick=1500x40x0.8

Shown in the flexible position inwall ground floor flexible expandable high-performance anticorrosive nano composite bed technological process table 1 of bracket

Bracket the stretch heavy anticorrosion flexibility of position inwall ground floor high-performance, scalable nano composite material method for production table 1

The flexible position of bracket inwall second layer flexible expandable high-performance anticorrosive nano composite method for production table 2

Material requirements

Hand over sticky moulding material to adopt the heavy anti-corrosion primer (TS-II type) of HJF-01D desulphurization plant special-purpose nanometer fiber

Main performance index is as following table 3:

The heavy anticorrosion interfacial agents adhesive force technical requirement table 4 of HJF-01D desulphurization plant special-purpose nanometer fiber:

With carbon steel adhesive force MP a	22
		With stainless steel adhesive force MP a	12
With acidproof brick adhesive force MP a	8

Surface treatment requires:

1, process early stage: in order to guarantee that coat system performs to optimum performance, single-layer type reinforced concrete chimney inner surface, before construction, must first carry out high pressure water cleaning processing to chimney bracket inwall, remove cigarette ash and adhere to not firm old coating.After substrate surface bone dry, adopt power tool to polish to damaged area fault plane, the slope requirement of fault plane polishing≤15 degree.If there is loosening structure, must re-start local stiffening.Before polishing, must carry out rational deployment to ventilation, cleaner, so that follow-up construction.

2, concrete chimney bracket inner wall surface requires only to remove the old corrosion-inhibiting coating of attaching surface, exposes acidproof brick surface, is sure not for a long time inject process to be carried out in part, in order to avoid cause the destruction of acidbrick lining layer.The acidbrick lining surface of preparing japanning after shot blastinog will keep cleaning, be dried, without grease, until the spraying of prime paint.

3, the substrate surface amount of dust of 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.

This project key technology

1., the selection of the sticky moulding material of the anticorrosion friendship of nanometer high-property, packing material.Whether material is highly stable to acid, alkali, salt, water vapour and nuisance, can form the heavy anticorrosion flexible expandable plastic-metal composite material of nanofiber high-performance, form flexible arc structure, collapsing length >=2cm, protect it not to be subject to the erosion of environment, can vary with temperature automatic telescopic, play iris action, prevent acid solution seepage;

2., heavy anticorrosion flexible expandable plastic-metal composite bed, can form fine and close intercommunication IPN conductive network structure, make corrosion of metal potential rise (rising 223mv), the close decline 173.2 μ A/cm of corrosion current ², corrosion electric current density reduces greatly, and condition and difficulty that corrosion occurs are improved, and corrosion is difficult for occurring.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, rather than occurs in metal surface; make reaction and metal form space separated, protection metal is not corroded.

3., the heavy anticorrosion flexible expandable plastic-metal lamination layer structure of nanofiber designs, and is one of key of formula.Flexiplast metal composite layer

4., the use of nanofiber interfacial agents, to improving the adhesive force of material at interface, be crucial.

5., the heavy anticorrosion flexible metal of nanofiber plastic composite elongation at break, be greater than acidproof brick and acidproof glue clay is built the maximum displacement value under layer limiting temperature situation by laying bricks or stones, the elongation at break of the heavy anticorrosion flexible metal of nanofiber plastic composite is 62.9%, considerably beyond acidproof brick and acidproof glue clay build the maximum displacement value under layer limiting temperature situation by laying bricks or stones, the design's novel anticorrosion system can meet the linear extendible that chimney is operating produced and change.

The innovation point of Project Product

Material innovation: adopt the sticky moulding material of the anticorrosion friendship of nanometer high-property, the heavy anticorrosion flexible glass steel plastic-metal layer material of compound successful novel nano fiber, having the incomparable acid-resistant anti-corrosion performance of traditional material, is the great innovation of antisepsis composite material, is also the revolution of anticorrosion theory and technology.

Principle innovation: there is anodic protection action principle, relatively have obvious advantage with traditional sacrificial anode and protective cathode antiseptic principle, can bear the corrosion of strong acid in chimney.The heavy anticorrosion flexible expandable plastic-metal composite material of nanofiber high-performance, copy the principle of titanium alloy liner, at concrete desulfuration chimney bracket inwall, build a flexibility being formed by nanometer heavy anticorrosive material " plastic-metal layer ", collapsing length >=2cm, protect its erosion that is not subject to environment, can vary with temperature automatic telescopic, play iris action, prevent acid solution seepage, thereby effectively stop the corrosion of acidic liquid to inner wall of stack; Its anti-corrosion function can compare favourably with titanium alloy completely, even more superior, at the anticorrosion time limit of effect, reaches under the prerequisite of 20 years, and cost is only the 1/3-1/4 of titanium alloy.

Technological innovation: the flexible expandable plastic-metal protective layer that nano combined heavy anticorrosion adhesive material forms, form flexible arc structure, collapsing length>=2cm, 304 stainless steels are reinforced, and chloride permeability rate is 3.6x10 ^-5, than national standard 5x10 ^-3low two orders of magnitude, have the ability of very strong obstruct acid solution seepage, non-leakage under certain thickness.

Process innovation: adopt nano-interface agent, nano combined heavy anticorrosion adhesive material, alkali-free glass wool cloth, high-strength acidproof aramid fiber cloth, nanometer current potential regulates paint to make novel nano composite heavy corrosion protection flexiplast metal level, 304 stainless steels are reinforced, technique is simple, proportion is only 1.02kg/l, and construction safety is easy, can shorten a large amount of durations.Possessing superpower adhesive force and wearability simultaneously, can bear washing away for a long time of liquid,, containing heavy metal, is not the safety and environmental protection material of food stage;

The heavy anticorrosion flexible glass steel plastic-metal layer technical indicator table 5 of nanofiber high-performance

Embodiment 1

Described flexible glass steel plastic-metal layer preparation method, carries out in the steps below:

1), chimney bracket inwall should be rooted out former anticorrosive coat, repair damaged acidbrick lining, adopt KPI-acid resistant adhesive mortar to smear whole chimney bracket inwall, to reach the surface smoothness of constructing better, construction surface requirements is clean and dry, all macroscopic greases, oil, dirt, lubricant and other pollutant must all be removed, without the chemicals of acid-alkali salt soap class;

2), interfacial agents pretreatment: spraying HJF-01J interfacial agents, spraying build is 10～20 μ m, manufacture technology requires: reach construction pre-treatment requirement, surface cleaning, solvent clean two times, 10 ℃ of above solidifying 16 hours;

3), the gluing moulding material of first: the heavy anti-corrosion primer of spraying HJF-01D nanometer, spraying build is 75 μ m, manufacture technology requires: application can not have holiday defect to produce, for overlap joint platform gap location, carry out repetition coating decoration especially, to reach reliable antiseptic effect, 10 ℃ of above solidifying 16 hours;

4), the gluing moulding material of second: the heavy anti-corrosion primer TS-of spraying HJF-01D nanometer II type, spraying build is 125 μ m, manufacture technology requires: in strict accordance with technological requirement, construct, can not holiday, for overlap joint platform gap location, again carry out coating decoration especially, to reach reliable antiseptic effect, 10 ℃ of above solidifying 16 hours;

5), the gluing moulding material in San road: the heavy anti-corrosion primer TS-of spraying HJF-01D nanometer II type, spraying build is 150 μ m, manufacture technology requires: in strict accordance with technological requirement, construct, can not holiday, for overlap joint platform gap location, again carry out coating decoration especially, to reach reliable antiseptic effect;

6), first glass fiber composite layer: pasting alkali-free glass wool cloth specification is that 0.4mm is thick, 1 * 1 * 1000mm, at bracket inferior horn, arcuate structure is made at place, arc length >=2cm, pasting alkali-free glass wool cloth thickness is 400 μ m, acidproof polyamide fibre cloth, manufacture technology requires: after the heavy anti-corrosion primer of San road spraying HJF-01D nanometer, sticking glass silk cloth in 5 minutes, and with solid cylinder, along pasting direction, grind back and forth crowded glass wool cloth and acidproof polyamide fibre cloth surface simultaneously, make coating ooze out glass wool cloth surface, get rid of inner residual air;

7), the gluing moulding material in Si road: the heavy anti-corrosion primer TS-of spraying HJF-01D nanometer II type, spraying build is 150 μ m, manufacture technology requires: in strict accordance with technological requirement, construct, can not holiday;

8), second glass fiber composite bed: former arc is constant keeping, pasting alkali-free glass wool cloth specification is that 0.4mm is thick, 1 * 1 * 1000mm, pasting alkali-free glass wool cloth thickness is 400 μ m, acidproof polyamide fibre cloth, and manufacture technology requires: after the heavy anti-corrosion primer of Si road spraying HJF-01D nanometer, sticking glass silk cloth in 5 minutes, and with solid cylinder, along pasting direction, grind back and forth crowded glass wool cloth and acidproof polyamide fibre cloth surface simultaneously, and make coating ooze out glass wool cloth surface, get rid of inner residual air;

9), the gluing moulding material in Wu road: the heavy anti-corrosion primer TS-of spraying HJF-01D nanometer II type, spraying build is 150 μ m, manufacture technology requires: in strict accordance with technological requirement, construct, can not holiday;

10), San road glass fiber composite bed: former arc is constant keeping, pasting alkali-free glass wool cloth specification is that 0.4mm is thick, 1 * 1 * 1000mm, pasting alkali-free glass wool cloth thickness is 400 μ m, acidproof polyamide fibre cloth, and manufacture technology requires: after the heavy anti-corrosion primer of Wu road spraying HJF-01D nanometer, sticking glass silk cloth in 5 minutes, and with solid cylinder, along pasting direction, grind back and forth crowded glass wool cloth and acidproof polyamide fibre cloth surface simultaneously, and make coating ooze out glass wool cloth surface, get rid of inner residual air;

11), the gluing moulding material in Liu road: the heavy anti-corrosion primer TS-of spraying HJF-01D nanometer II type, spraying build is 150 μ m, manufacture technology requires: in strict accordance with technological requirement, construct, can not holiday, 10 ℃ of above solidifying 16 hours;

12), the gluing moulding material in Qi road: the heavy anti-corrosion primer TS-of spraying HJF-01D nanometer II type, spraying build is 100 μ m, manufacture technology requires: in strict accordance with technological requirement, construct, can not holiday, 10 ℃ of above solidifying 16 hours;

13), Ba road current potential regulates material: the heavy anticorrosion current potential of spraying HJF-01M nanometer regulates paint TSM-II type, spraying build is 80 μ m, manufacture technology requires: in strict accordance with technological requirement, constructs, can not holiday, and 10 ℃ of above spontaneous curings 7～10 days;

14), total coating thickness is 2000 ± 90, manufacture technology requires: finished product is the heavy anticorrosion flexible glass steel plastic-metal layer of the nanofiber high-performance of wet desulphurization concrete chimney.

Claims (2)

1. the unsettled jockey of flexible expandable antiseepage corrosion-resistant at the flexible position of a chimney bracket, this jockey is by flexiplast metal level, stainless steel press strip, setscrew, acidproof brick, acid resistant adhesive mortar forms, it is characterized in that acidbrick lining layer (8) surface above the flexible position of bracket applies one deck one acid resistant adhesive mortar (1) with arc, a described acid resistant adhesive mortar (1) lower end is connected with flexiplast metal level (2) one end, described flexiplast metal level (2) two ends are connected with (8) with acidbrick lining layer (4) with setscrew (7) by stainless steel press strip, described flexiplast metal level (2) is along unsettled another acid resistant adhesive mortar (5) one end that is connected in of acidbrick lining layer (8) expansion joint outer surface, another acidbrick lining layer (4) surface applies another acid resistant adhesive mortar (5) with arc, unsettled arc (3) is made in described flexiplast metal level (2) lower left corner, the unsettled integral body that connects in described flexiplast metal level (2) two ends and flexible acidproof aramid fiber plastic-metal layer (6) camber line two ends.

2. the unsettled jockey of flexible expandable antiseepage corrosion-resistant at the flexible position of a kind of chimney bracket according to claim 1, is characterized in that the acidproof aramid fiber plastic-metal of described flexibility layer is flat board or bellows.