阅读说明：本技术 一种弹性防腐黏结剂及其制备方法 (Elastic anti-corrosion adhesive and preparation method thereof ) 是由 杨小刚 王向阳 李斌 于 2020-06-02 设计创作，主要内容包括：本发明公开了一种弹性防腐黏结剂及其制备方法,属于防腐材料技术领域,A组分配方中采用了胺基聚醚,B组分中采用了自合成的聚脲改性硅烷基聚醚树脂,聚脲改性硅烷基聚醚树脂含有极微量的残留异氰酸酯基反应,极大降低游离态胺基聚醚在在弹性防腐黏结剂中的存量；同时胺基聚醚与B组分中的环氧树脂和部分γ-缩水甘油醚氧丙基三甲氧基硅烷中的环氧基反应,提高了弹性防腐黏结剂的力学性能,环氧基的引入有利于提高弹性防腐黏结剂的耐化学品性能,能够适应诸如工业大气环境下的酸雨等的侵蚀；而通过反应使游离态的端胺基聚醚大部分反应掉,避免了游离态端胺基聚醚存在过多而发生迁移析出,可以广泛适用于酸性或碱性环境,具有显著的经济效益。(The invention discloses an elastic anticorrosion adhesive and a preparation method thereof, belonging to the technical field of anticorrosion materials, wherein an amino polyether is adopted in the formula of a component A, a self-synthesized polyurea modified silyl polyether resin is adopted in a component B, and the polyurea modified silyl polyether resin contains trace residual isocyanate group for reaction, so that the stock of free amino polyether in the elastic anticorrosion adhesive is greatly reduced; meanwhile, the amino polyether reacts with the epoxy resin in the component B and part of epoxy groups in the gamma-glycidyl ether oxypropyltrimethoxysilane, so that the mechanical property of the elastic anticorrosive adhesive is improved, and the introduction of the epoxy groups is favorable for improving the chemical resistance of the elastic anticorrosive adhesive and can adapt to the erosion of acid rain and the like in industrial atmospheric environment; most of free amine-terminated polyether is reacted through the reaction, so that the phenomenon that the free amine-terminated polyether is excessive to be migrated and separated out is avoided, the method can be widely applied to acidic or alkaline environments, and has remarkable economic benefit.)

1. The elastic anti-corrosion adhesive comprises a component A and a component B, wherein the component A and the component B are in a mass ratio of 4:1, and the component A is characterized by comprising the following raw materials in percentage by mass: 30-48% of amine-terminated polyether, 3-7% of fumed silica, 30-45% of pigment, 0.5-2.5% of catalyst, 0.5-4.5% of accelerator, 7-13% of metal corrosion inhibition additive and 1-8% of deionized water, wherein the component B comprises the following raw materials in percentage by mass: 45-60% of matrix polymer, 1-5% of liquid epoxy resin, 1.5-3.5% of stabilizer, 1-4% of adhesion promoter, 7.1-14% of fumed silica, 13.5-35% of nano reinforcing powder, 1.2-3.5% of antioxidant and 1.2-3.5% of ultraviolet absorbent.

2. The elastic anti-corrosion adhesive according to claim 1, wherein the metal corrosion inhibition additive comprises a rust converting agent, polyaniline and a metal corrosion inhibitor in a mass ratio of 2:1:1, wherein the polyaniline is a mixture of intrinsic polyaniline and secondarily doped polyaniline.

3. The elastic anticorrosive adhesive according to claim 2, wherein the rust converting agent is a polyphosphoric acid-tannic acid type rust converting agent, and the polyphosphoric acid-tannic acid type rust converting agent comprises the following raw materials by mass percent: 45% of polyphosphoric acid, 1% of tannic acid, 1% of urotropine and 10% of hydroxyl polyether.

4. The elastic anti-corrosion adhesive according to claim 2, wherein the metal corrosion inhibitor is a complex metal corrosion inhibitor, and the complex metal corrosion inhibitor comprises sodium tungstate, zinc sulfate, thiourea, calcium gluconate, sodium polyphosphate, polyaspartic acid and sodium silicate in a mass ratio of 1:3:4:3:2.5: 2.

5. The elastic anti-corrosive binder according to claim 4, wherein the matrix polymer comprises silane modified polyether resin and polyurea modified silyl polyether resin, wherein the silane modified polyether resin is at least one of methyldimethoxysilane terminated polyether resin or trimethoxysilane terminated polyether resin.

6. The elastic anticorrosion adhesive as claimed in claim 5, wherein the polyurea modified silyl polyether resin contains urea bonds and ether bonds, wherein the introduction of the urea bonds and ether bonds is the reaction of dehydrated and hydrogenated MDI, and then the reaction of the terminal secondary amino polyether and the terminal primary amino polyether with N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane and N-butylaminopropyltrimethoxysilane is carried out.

7. The elastic anticorrosion adhesive as claimed in claim 6, wherein the polyurea modified silane based polyether resin comprises the following raw materials by mass percent: 17-23% of hydrogenated MDI, 36-67% of terminal secondary amino polyether, 2-39% of terminal primary amino polyether, 0.5-4.5% of N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane and 3.5-8% of N-butylaminopropyltrimethoxysilane.

8. A method of preparing the elastic anti-corrosive binder of any one of claims 1 to 7, comprising:

(1) adding amine-terminated polyether into a planetary stirring kettle, respectively regulating the speed of a planetary stirring motor and a high-speed stirring motor to 10-20 rpm and 500-800 rpm, sequentially adding fumed silica, pigment, a catalyst, an accelerant and a metal corrosion inhibition additive, respectively regulating the speed of the planetary stirring motor and the high-speed stirring motor to 30-40 rpm and 1000-1200 rpm after the addition is finished, starting a heating device, heating to 60 ℃, and stirring for 1-1.5 hours at the temperature of 60 +/-5 ℃;

(2) stopping heating, respectively regulating the speed of a planetary stirring motor and a high-speed stirring motor to 10-20 rpm and 500-800 rpm, adding deionized water, continuously stirring for 1-1.5 h, then opening a vacuum valve, defoaming for 10-15 min under the vacuum degree of 0.07MPa, then closing the vacuum valve, and closing the planetary stirring kettle to discharge after the temperature is lower than 50 ℃ to prepare a component A of the elastic anticorrosive adhesive;

(3) metering a matrix polymer, nano reinforcing powder, fumed silica and liquid epoxy resin, adding the metered matrix polymer, nano reinforcing powder, fumed silica and liquid epoxy resin into an empty planetary stirring kettle, starting a planetary stirring motor and a high-speed stirring motor, respectively regulating the speeds to 10-20 rpm and 500-800 rpm, and continuously stirring until the powder material is completely wetted;

(4) regulating the speed of a planetary stirring motor and a high-speed stirring motor to 30-40 rpm and 1000-1200 rpm respectively, stirring at a high speed for 1-1.5 h, starting a heating device, starting a vacuum valve after the temperature is raised to 110 ℃, and dehydrating for 20-30 min under the negative pressure of 0.07 MPa;

(5) stopping heating after dehydration is finished, adding a stabilizer, an adhesion promoter, an antioxidant and an ultraviolet absorbent, continuously stirring for 1-1.5 h, then opening a vacuum valve, keeping the negative pressure at 0.07MPa, continuously degassing for 20-30 min, and then discharging to obtain a component B of the elastic anticorrosive adhesive;

(6) before use, the component A and the component B are mixed with each other according to the volume ratio of 4:1 to obtain the elastic anti-corrosion adhesive.

9. The method of claim 8, wherein the matrix polymer is prepared by:

metering secondary amine-terminated polyether and primary amine-terminated polyether, adding the metered polyether into a dehydration kettle, starting stirring and heating, keeping the rotating speed at 200rpm, opening a vacuum valve and maintaining the vacuum degree at 0.07MPa, keeping the temperature at 115 +/-5 ℃ for 2-3 h, stopping heating after dehydration, closing the vacuum valve, introducing nitrogen into the dehydration kettle, cooling until the material temperature is lower than 50 ℃, and adding the dehydrated raw material into a planetary stirring reaction kettle;

adding the dehydrated raw materials into a planetary stirring reaction kettle, starting a planetary stirring motor and a high-speed stirring motor, regulating the speed to 30-40 rpm and 1000-1200 rpm respectively, then continuing to add hydrogenated MDI into the planetary stirring reaction kettle, filling nitrogen into the planetary stirring reaction kettle after adding the hydrogenated MDI, reacting for 30min, then starting heating and raising the temperature to 70 ℃, controlling the temperature to be 70 +/-5 ℃, continuing to react for 2-3 h, stopping heating, and cooling to below 50 ℃;

after the material temperature in the planetary stirring reaction kettle is lower than 50 ℃, respectively regulating the speed of a planetary stirring motor and a high-speed stirring motor to 30-40 rpm and 1000-1200 rpm, adding the measured N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane and N-butylaminopropyl trimethoxysilane into the planetary stirring reaction kettle, introducing nitrogen after the addition is finished, heating to 80 ℃, keeping the temperature at 80 +/-5 ℃, stopping heating after reacting for 3-4h, and respectively regulating the speed of the planetary stirring motor and the high-speed stirring motor to 10-20 rpm and 500-800 rpm;

opening a vacuum valve, defoaming for 15-20 min under the vacuum degree of 0.07MPa, closing the vacuum valve, cooling to below 50 ℃, stopping stirring and discharging to obtain the polyurea modified silyl polyether resin;

mixing the silane modified polyether resin and the polyurea modified silane-based polyether resin according to the mass ratio of 1:1, and uniformly mixing to obtain the matrix polymer.

Technical Field

The invention relates to the technical field of anticorrosive materials, in particular to an elastic anticorrosive adhesive and a preparation method thereof.

Background

The boiler steel frame is a common facility and component in the industries of petrifaction, electric power, gas and the like, and plays a vital role in the daily production process. The top of the boiler steel frame is a structure that an overhead color steel plate and an I-shaped steel purline penetrate and are fixed through self-tapping screws at the drill tail. Due to the fact that the steel plate is in a severe marine atmosphere corrosion environment and a severe industrial atmosphere corrosion environment, rainwater, corrosive gas, accumulated water, acidic slurry, microorganisms and the like all corrode the steel plate, and dust and the like deposited at gaps accelerate electrochemical corrosion, and threaten the construction safety. At present, the phenomena that the joint and the fixing part of the color steel plate and the purline and the nearby part are rusted and perforated, and even the head part of a self-tapping screw for partially fixing the color steel plate is rusted and broken are common.

In engineering practice, the connection part of the color steel plate and the steel purline directly leads to the fixation failure of the self-tapping screw at the drill tail due to corrosion. Moreover, the color steel plate is positioned at high altitude, and once the fixation fails, if strong wind force is met, the high altitude falls, and nearly fatal threats can be formed on the safety of personnel, equipment and the like. The corrosion reason analysis of the connecting part of the color steel plate and the steel purline is as follows: (1) the overhead (corrugated) color steel plate is in salt spray corrosion and industrial atmospheric corrosion environment all the year round due to being located at a higher position above the ground. (2) Because the color steel plates and the steel purlins are penetrated and fixed together through the self-tapping screws at the drill tails, and a large number of gaps exist at the joints, the corrosion of the gaps at the positions generally exists, and the damage to the color steel plates, the self-tapping screws and the steel purlins is aggravated. (3) Fretting corrosion caused by vibration generated during the operation of the boiler unit also aggravates the damage to the connecting part of the color steel plate and the steel purline. (4) The junction between various steel sheet and steel purlin forms stress corrosion, and the great wind-force of year leads to various steel sheet to produce frequent fluctuation by a relatively large margin to the pressure of the joint portion of steel purlin simultaneously in the high altitude, has further aggravated the stress of stress point position and has fluctuated by a wide margin, leads to corroding further aggravation. (5) Because the highest end and the lowest end of the color steel plate ceiling are easy to have a small amount of accumulated water, the electrochemical corrosion condition is common, and the damage to the two parts is aggravated.

Due to the reasons, the color steel plate is corroded and damaged, and the corrosion part of the color steel plate ceiling is mainly at the steel purlines, and the color steel plates at the highest point and the lowest point are corroded most seriously.

When the color steel plate is installed, the lower concave surface of the steel plate is lapped on the surface of supporting steel (purlin) and is penetrated and fixed through the self-tapping screw at the drill tail, so that gaps exist between the surface of the steel plate and the surface of the purlin, between the surface of the self-tapping screw at the drill tail and the surface of the color steel plate, and between the surface of the self-tapping screw at the drill tail and the surface of the purlin, and the corrosion of the gaps is a big problem facing the corrosion prevention of the color. Moreover, the purlin surface has born weight more than the various steel sheet, and purlin surface bearing pressure is greater than the dead weight more than the various steel sheet under positive wind pressure state, and purlin surface bearing pressure is less than dead weight more than the various steel sheet under the negative wind pressure state, nevertheless bores the self tapping screw head of tail and has received ascending pulling force simultaneously, so various steel sheet, purlin and bore the self tapping screw surface of tail and all have stress corrosion. In addition, fretting corrosion also occurs due to vibration and frequent alternating of wind strength during the operation of the unit.

In the prior art, the color steel plate adopts an anti-corrosion means of brushing acrylic polyurethane anti-corrosion paint at present, the initial anti-corrosion effect is still good, but the boiler color steel plate is in a severe marine atmospheric corrosion environment and a severe industrial atmospheric corrosion environment, and the coating can generate the phenomena of rust return, yellowing and the like after a period of time use, and even generates obvious bubbling, cracking and peeling phenomena; secondly, the coating in the prior art does not have the functions of rust prevention and rust conversion, and can not effectively inhibit the occurrence and growth of rust for a long time; finally, microorganisms are easy to breed in the working condition environment where the color steel plate of the boiler unit is located, metabolites of the microorganisms are directly deposited due to the existence of the microorganisms, and then electrochemical corrosion is caused, and the currently used acrylic polyurethane anticorrosive paint is difficult to effectively kill and inhibit the microorganisms, so that the microbial corrosion is difficult to prevent.

The ceiling is generally composed of a steel purline and a color steel plate, the connection and fixation is realized by screwing a stainless steel drill tail wire into a whole after penetrating through the color steel plate and the steel purline, the connection structure is corroded quickly in a marine atmospheric environment, the corrosion rate of the color steel plate at the part contacted with the drill tail wire is in geometric multiple and rapidly diffuses towards the periphery of the drill tail wire, once the corrosion surface is larger than the diameter of the tail wire at the end part of the drill tail wire, the original fixing mode fails, in addition, coastal typhoon is frequent, the ceiling is very easy to be scraped by strong typhoon to fall to the ground, and the safety of nearby personnel and other facilities is seriously threatened. In the prior art, in order to solve the corrosion problem of the part of the color steel plate, building sealant is adopted to cover the connecting part. In recent years, silicone sealant, polysulfide sealant and the like are adopted successively, but the problems are not solved, firstly, the silicone sealant contains more plasticizers, the plasticizers are easy to precipitate in the long-term high-low temperature exposure process of the outside to cause pollution, and in addition, the precipitation loss of the plasticizers causes the volume loss of the sealant layer, so that the defects of the sealant layer are formed to gradually lose the sealing effect, and water vapor carrying oxygen is easy to permeate the sealant layer to corrode a color steel plate and a steel structure part contacted with the color steel plate; polysulfide sealant has strong odor, is easy to cause discomfort to constructors, and a glue layer is easy to cause polysulfide group to break and form a new cross-linking point with an adjacent chain segment due to heating in the presence of oxygen, so that the material is aged, hardened and loses elasticity, further, the surface of the glue has cracks, the elongation at break is reduced, the part needing to be protected is gradually lost, and the corrosion hazard is further aggravated.

Disclosure of Invention

The invention provides an elastic anti-corrosion adhesive and a preparation method thereof, aiming at solving the defects of short protection life, poor anti-rust and rust conversion effects, poor microbial corrosion protection effects and the like of an acrylic polyurethane anti-corrosion coating, effectively solving the typical corrosion problems of pitting corrosion, crevice corrosion, galvanic corrosion, microbial corrosion and the like of a color steel plate part of a boiler unit, having better waterproof sealing property, not going bad after long-term use, having stronger anti-rust and rust conversion functions, effectively killing microorganisms such as iron bacteria, thiobacillus, sulfate reducing bacteria and the like so as to prevent microbial corrosion, being widely applicable to acidic or alkaline environments and having remarkable economic benefits.

The specific technical scheme provided by the invention is as follows:

in a first aspect, the elastic anti-corrosion adhesive provided by the invention comprises a component A and a component B, wherein the component A and the component B are in a mass fraction ratio of 4:1, and the component A comprises the following raw materials in percentage by mass: 30-48% of amine-terminated polyether, 3-7% of fumed silica, 30-45% of pigment, 0.5-2.5% of catalyst, 0.5-4.5% of accelerator, 7-13% of metal corrosion inhibition additive and 1-8% of deionized water, wherein the component B comprises the following raw materials in percentage by mass: 45-60% of matrix polymer, 1-5% of liquid epoxy resin, 1.5-3.5% of stabilizer, 1-4% of adhesion promoter, 7.1-14% of fumed silica, 13.5-35% of nano reinforcing powder, 1.2-3.5% of antioxidant and 1.2-3.5% of ultraviolet absorbent.

Optionally, the metal corrosion inhibition additive comprises a rust converting agent, polyaniline and a metal corrosion inhibitor in a mass ratio of 2:1:1, wherein the polyaniline is a mixture of intrinsic polyaniline and secondarily doped polyaniline.

Optionally, the rust converting agent is a polyphosphoric acid-tannic acid type rust converting agent, and the polyphosphoric acid-tannic acid type rust converting agent comprises the following raw materials in percentage by mass: 45% of polyphosphoric acid, 1% of tannic acid, 1% of urotropine and 10% of hydroxyl polyether.

Optionally, the metal corrosion inhibitor is a complex metal corrosion inhibitor, and the complex metal corrosion inhibitor comprises sodium tungstate, zinc sulfate, thiourea, calcium gluconate, sodium polyphosphate, polyaspartic acid and sodium silicate in a mass ratio of 1:3:4:3:2.5: 2.

Optionally, the base polymer includes silane-modified polyether resin and polyurea-modified silane-based polyether resin, wherein the silane-modified polyether resin is at least one of methyldimethoxysilane-terminated polyether resin or trimethoxysilane-terminated polyether resin.

Optionally, the polyurea modified silyl polyether resin contains urea bonds and ether bonds, wherein the urea bonds and the ether bonds are introduced into the dehydrated and hydrogenated MDI reacted terminal secondary amino polyether and terminal primary amino polyether, and the terminal secondary amino polyether and the terminal primary amino polyether are reacted with N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane and N-butylaminopropyltrimethoxysilane.

Optionally, the polyurea modified silane-based polyether resin comprises the following raw materials in percentage by mass: 17-23% of hydrogenated MDI, 36-67% of terminal secondary amino polyether, 2-39% of terminal primary amino polyether, 0.5-4.5% of N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane and 3.5-8% of N-butylaminopropyltrimethoxysilane.

In another aspect, the present invention also provides a method for preparing the above elastic anti-corrosive adhesive, comprising:

(1) adding amine-terminated polyether into a planetary stirring kettle, respectively regulating the speed of a planetary stirring motor and a high-speed stirring motor to 10-20 rpm and 500-800 rpm, sequentially adding fumed silica, pigment, a catalyst, an accelerant and a metal corrosion inhibition additive, respectively regulating the speed of the planetary stirring motor and the high-speed stirring motor to 30-40 rpm and 1000-1200 rpm after the addition is finished, starting a heating device, heating to 60 ℃, and stirring for 1-1.5 hours at the temperature of 60 +/-5 ℃;

(2) stopping heating, respectively regulating the speed of a planetary stirring motor and a high-speed stirring motor to 10-20 rpm and 500-800 rpm, adding deionized water, continuously stirring for 1-1.5 h, then opening a vacuum valve, defoaming for 10-15 min under the vacuum degree of 0.07MPa, then closing the vacuum valve, and closing the planetary stirring kettle to discharge after the temperature is lower than 50 ℃ to prepare a component A of the elastic anticorrosive adhesive;

(3) metering a matrix polymer, nano reinforcing powder, fumed silica and liquid epoxy resin, adding the metered matrix polymer, nano reinforcing powder, fumed silica and liquid epoxy resin into an empty planetary stirring kettle, starting a planetary stirring motor and a high-speed stirring motor, respectively regulating the speeds to 10-20 rpm and 500-800 rpm, and continuously stirring until the powder material is completely wetted;

(4) regulating the speed of a planetary stirring motor and a high-speed stirring motor to 30-40 rpm and 1000-1200 rpm respectively, stirring at a high speed for 1-1.5 h, starting a heating device, starting a vacuum valve after the temperature is raised to 110 ℃, and dehydrating for 20-30 min under the negative pressure of 0.07 MPa;

(5) stopping heating after dehydration is finished, adding a stabilizer, an adhesion promoter, an antioxidant and an ultraviolet absorbent, continuously stirring for 1-1.5 h, then opening a vacuum valve, keeping the negative pressure at 0.07MPa, continuously degassing for 20-30 min, and then discharging to obtain a component B of the elastic anticorrosive adhesive;

(6) before use, the component A and the component B are mixed with each other according to the volume ratio of 4:1 to obtain the elastic anti-corrosion adhesive.

Optionally, the matrix polymer is prepared by the following method:

metering secondary amine-terminated polyether and primary amine-terminated polyether, adding the metered polyether into a dehydration kettle, starting stirring and heating, keeping the rotating speed at 200rpm, opening a vacuum valve and maintaining the vacuum degree at 0.07MPa, keeping the temperature at 115 +/-5 ℃ for 2-3 h, stopping heating after dehydration, closing the vacuum valve, introducing nitrogen into the dehydration kettle, cooling until the material temperature is lower than 50 ℃, and adding the dehydrated raw material into a planetary stirring reaction kettle;

adding the dehydrated raw materials into a planetary stirring reaction kettle, starting a planetary stirring motor and a high-speed stirring motor, regulating the speed to 30-40 rpm and 1000-1200 rpm respectively, then continuing to add hydrogenated MDI into the planetary stirring reaction kettle, filling nitrogen into the planetary stirring reaction kettle after adding the hydrogenated MDI, reacting for 30min, then starting heating and raising the temperature to 70 ℃, controlling the temperature to be 70 +/-5 ℃, continuing to react for 2-3 h, stopping heating, and cooling to below 50 ℃;

after the material temperature in the planetary stirring reaction kettle is lower than 50 ℃, respectively regulating the speed of a planetary stirring motor and a high-speed stirring motor to 30-40 rpm and 1000-1200 rpm, adding the measured N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane and N-butylaminopropyl trimethoxysilane into the planetary stirring reaction kettle, introducing nitrogen after the addition is finished, heating to 80 ℃, keeping the temperature at 80 +/-5 ℃, stopping heating after reacting for 3-4h, and respectively regulating the speed of the planetary stirring motor and the high-speed stirring motor to 10-20 rpm and 500-800 rpm;

opening a vacuum valve, defoaming for 15-20 min under the vacuum degree of 0.07MPa, closing the vacuum valve, cooling to below 50 ℃, stopping stirring and discharging to obtain the polyurea modified silyl polyether resin;

mixing the silane modified polyether resin and the polyurea modified silane-based polyether resin according to the mass ratio of 1:1, and uniformly mixing to obtain the matrix polymer.

The invention has the following beneficial effects:

the embodiment of the invention provides an elastic anticorrosive adhesive and a preparation method thereof, wherein amino polyether is adopted in the formula of the component A, self-synthesized polyurea modified silyl polyether resin is adopted in the component B, and the polyurea modified silyl polyether resin contains trace residual isocyanate group for reaction, so that the stock of free amino polyether in the elastic anticorrosive adhesive is greatly reduced; meanwhile, the amino polyether reacts with the epoxy resin in the component B and part of epoxy groups in the gamma-glycidyl ether oxypropyltrimethoxysilane, so that the mechanical property of the elastic anticorrosive adhesive is improved, and the introduction of the epoxy groups is favorable for improving the chemical resistance of the elastic anticorrosive adhesive and can adapt to the erosion of acid rain and the like in industrial atmospheric environment; most of free-state amine-terminated polyether is reacted through reaction, migration and precipitation caused by excessive free-state amine-terminated polyether are avoided, the typical corrosion problems of pitting corrosion, crevice corrosion, galvanic corrosion, microbial corrosion and the like of the color steel plate part of a boiler unit can be effectively solved, the water-proof sealing performance is good, the water-proof sealing performance is not deteriorated after long-term use, the rust-proof sealing performance is strong, meanwhile, microorganisms such as iron bacteria, thiobacillus, sulfate reducing bacteria and the like can be effectively killed, microbial corrosion is prevented, the water-proof sealing agent can be widely applied to acidic or alkaline environments, and remarkable economic benefits are achieved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a scanning electron micrograph of intrinsic polyaniline and doped polyaniline in accordance with an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below, and it should be apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention provides an elastic anticorrosive adhesive and a preparation method thereof, which are suitable for anticorrosive protection of a contact part between a color steel plate of a ceiling and a steel purline, solve the defects of short protection life, poor antirust rust conversion effect, poor microbial corrosion protection effect and the like of an acrylic polyurethane anticorrosive paint, can effectively solve the typical corrosion problems of pitting corrosion, crevice corrosion, galvanic corrosion, microbial corrosion and the like of the color steel plate part of a boiler unit, have better waterproof sealing property, do not deteriorate after long-term use, have stronger antirust rust conversion function, can effectively kill microorganisms such as iron bacteria, thiobacillus, sulfate reducing bacteria and the like so as to prevent microbial corrosion, can be widely applied to various acidic and alkaline corrosion environments, and have remarkable economic benefits.