阅读说明：本技术 一种铝合金防腐材料的制备方法 (Preparation method of aluminum alloy anticorrosive material ) 是由 史德超 丁文文 于 2019-10-08 设计创作，主要内容包括：本发明公开了一种铝合金防腐材料的制备方法,具体包括如下步骤：S1：按重量份依次称氧化锌10-15份,并将所称取的氧化锌置于硫酸锌溶液内部,在磁力搅拌器搅拌下滴加碳酸铵溶液,直到溶液PH值达到7-7.5为止；S2：对S1所获得的溶液进行过滤,并将过滤后的上层物放置于烘箱内进行烘干10-15h,调节温度230-270℃,完成后取出烘箱并置于通风橱内自然冷却至室温；S3：将S2所获得的物料在放置马弗炉中煅烧5-8h,制得磁性氧化锌。本发明的磁性氧化锌颗粒能够与铝合金中的铁、钴、镍单质产生引力效果,改性端羧基丁腈橡胶实现了前期的吸附效果,在防腐材料凝固后,即能够产生引力效果,使防腐材料与铝合金材料粘附的稳定性加强了20％以上。(The invention discloses a preparation method of an aluminum alloy anticorrosive material, which specifically comprises the following steps: s1: weighing 10-15 parts of zinc oxide in parts by weight in sequence, placing the weighed zinc oxide in a zinc sulfate solution, and dropwise adding an ammonium carbonate solution under stirring of a magnetic stirrer until the pH value of the solution reaches 7-7.5; s2: filtering the solution obtained in the step S1, placing the filtered upper-layer substance in an oven for drying for 10-15h, adjusting the temperature to 230-; s3: and (4) calcining the material obtained in the step S2 in a muffle furnace for 5-8h to obtain the magnetic zinc oxide. The magnetic zinc oxide particles can generate an attraction effect with iron, cobalt and nickel simple substances in the aluminum alloy, the modified carboxyl-terminated butadiene-acrylonitrile rubber realizes an early-stage adsorption effect, and the attraction effect can be generated after the anticorrosive material is solidified, so that the adhesion stability of the anticorrosive material and the aluminum alloy material is enhanced by more than 20%.)

1. The preparation method of the aluminum alloy anticorrosive material is characterized by comprising the following steps:

s1: weighing 10-15 parts of zinc oxide in parts by weight in sequence, placing the weighed zinc oxide in a zinc sulfate solution, and dropwise adding an ammonium carbonate solution under stirring of a magnetic stirrer until the pH value of the solution reaches 7-7.5;

s2: filtering the solution obtained in the step S1, placing the filtered upper-layer substance in an oven for drying for 10-15h, adjusting the temperature to 230-;

s3: calcining the material obtained in the step S2 in a muffle furnace for 5-8h to prepare magnetic zinc oxide;

s4: weighing 20-30 parts of modified carboxyl-terminated butadiene-acrylonitrile rubber, 15-25 parts of hydroxyethylidene diphosphate, 10-12 parts of imidazoline, 10-15 parts of sodium molybdate, 5-10 parts of polyaspartic acid and 10-20 parts of auxiliary materials in sequence according to parts by weight, mechanically mixing and stirring the materials for 10-15min to obtain a mixed solution;

s5: and (3) putting the magnetic zinc oxide prepared in the S3 into the mixed solution, adding 2-5 parts by weight of lubricant, and heating and stirring continuously to enable the mixture to be in a molten state, thus obtaining the aluminum alloy anticorrosive material.

2. The method for preparing an aluminum alloy anticorrosive material according to claim 1, characterized in that: the modified carboxyl-terminated nitrile rubber is prepared by mixing carboxyl nitrile rubber and epoxy resin E51 according to the proportion of 3-5: 1-2.

3. The method for preparing an aluminum alloy anticorrosive material according to claim 2, characterized in that: in S5, the lubricant is one or a mixture of stearic acid, butyl stearate or oleamide.

4. The method for preparing an aluminum alloy anticorrosive material according to claim 3, characterized in that: in S4, the auxiliary materials comprise, by weight: 5-8 parts of ethylene glycol, 1-3 parts of a dispersing agent, 1-3 parts of a flatting agent, 1-4 parts of a wetting agent and 1-2 parts of a defoaming agent.

5. The method for preparing the aluminum alloy anticorrosive material according to claim 4, characterized in that: the flatting agent is any one of isophorone, diacetone alcohol and silicone oil.

6. The method for preparing the aluminum alloy anticorrosive material according to claim 5, characterized in that: the dispersing agent comprises the following components in parts by weight: 50-60 parts of butyl acetate, 20-30 parts of polydimethylsiloxane, 10-20 parts of dimethylbenzene and 10-15 parts of water.

7. The preparation method of the aluminum alloy anticorrosive material according to claim 6, characterized in that the preparation method of the dispersant is as follows:

s1: weighing polydimethylsiloxane, dimethylbenzene and water according to parts by weight, and sequentially mixing to prepare a mixed solution to be added into a titration container;

s2: weighing butyl acetate according to the weight parts, putting the butyl acetate into a reaction container, introducing nitrogen, bubbling the nitrogen instead of stirring, dropwise adding the mixed solution at a constant speed at normal temperature for reaction, distilling the mixed solution after dropwise adding is finished, and stopping when the pH value during distillation is controlled to be 7-7.5 to obtain the dispersing agent.

8. The method for preparing an aluminum alloy anticorrosive material according to claim 7, characterized in that: in S1, the frequency of the magnetic stirrer for stirring and adjusting the zinc oxide and the zinc sulfate solution is 300-500 HZ.

9. The method for preparing an aluminum alloy anticorrosive material according to claim 8, characterized in that: in S3, before the obtained material is placed in a muffle furnace for calcination, the material needs to be washed for 3-5 times by distilled water, and after the washing is finished, the material needs to be dried.

10. The preparation method of the aluminum alloy anticorrosive material according to any one of claims 1 to 9, which is applied to improving the anticorrosive performance of the aluminum alloy material.

Technical Field

The invention relates to the technical field of anticorrosive materials, in particular to a preparation method of an aluminum alloy anticorrosive material.

Background

At present, since the beginning of smelting metals and using metal products by human beings, the corrosion and protection problems of metals are accompanied, the social loss caused by the corrosion of metals is huge, and according to statistics, about 1/10 of the metals smelted by people every year is corroded and damaged, which is equivalent to that about 1/10 of smelters do useless work every year due to the existence of corrosion; 1/10 the damage of metal products affected by the corrosion-damaged metal is far more than the value of the metal itself; the resulting loss of downtime, production downtime, and personal injuries is even more immeasurable, and therefore, the problems of metal corrosion and protection are highly appreciated by people.

Through retrieval, Chinese patent publication No. CN105401019A discloses a preparation method of an anticorrosive aluminum alloy, zinc powder, magnesium powder, silicon powder, an iron block, a rhenium ingot, a titanium ingot, boron powder, a copper block, an indium ingot, chromium powder and a cerium ingot are smelted to obtain an alloy liquid, an argon tank is utilized to spray argon gas, a nano modifier is uniformly dispersed and distributed in the alloy liquid to carry out modification treatment, then a composite stabilizer is added, refining and deoxidation are carried out, then casting is carried out, casting forming and cleaning are carried out to obtain a casting, the casting is preheated, reheated and insulated, then precooling treatment, quenching treatment and tempering treatment are carried out in clear water, and after cooling to room temperature, the anticorrosive aluminum alloy is obtained, the tensile strength of the obtained aluminum alloy is improved by 0.7%, the yield strength is improved by 6.1%, the elongation is improved by 10.8%, the impact toughness is improved by 17.9%, and the hardness is improved by HRC 0.3; has excellent corrosion resistance.

The existing aluminum alloy anticorrosive material has the following defects: the anticorrosive material is adhered to the aluminum alloy material by using glue or a binder, has poor stability, and can easily crack or fall off when being used in high-temperature and high-pressure areas or areas with large temperature difference all the year round, so that the aluminum alloy is exposed and corroded in later period.

Disclosure of Invention

The invention aims to provide a preparation method of an aluminum alloy anticorrosive material, which is characterized in that magnetic zinc oxide particles are added, when the magnetic zinc oxide particles are coated on the surface of the aluminum alloy, the magnetic zinc oxide particles can generate an attraction effect with iron, cobalt and nickel simple substances in the aluminum alloy, the modified carboxyl-terminated butadiene-acrylonitrile rubber realizes the early-stage adsorption effect, and after the anticorrosive material is solidified, the attraction effect can be generated, so that the adhesion stability of the anticorrosive material and the aluminum alloy material is enhanced by more than 20 percent, and the problem that the existing aluminum alloy anticorrosive material is adhered to the aluminum alloy material by using glue or a binder, has poor stability, and is easy to crack or fall off when being used in high-temperature and high-pressure areas or areas with large temperature difference all the year around, so that the aluminum alloy is exposed and corroded in the later stage is solved.

The preparation method of the aluminum alloy anticorrosive material provided by the embodiment of the invention specifically comprises the following steps:

s1: weighing 10-15 parts of zinc oxide in parts by weight in sequence, placing the weighed zinc oxide in a zinc sulfate solution, and dropwise adding an ammonium carbonate solution under stirring of a magnetic stirrer until the pH value of the solution reaches 7-7.5;

s2: filtering the solution obtained in the step S1, placing the filtered upper-layer substance in an oven for drying for 10-15h, adjusting the temperature to 230-;

s3: calcining the material obtained in the step S2 in a muffle furnace for 5-8h to prepare magnetic zinc oxide;

s4: weighing 20-30 parts of modified carboxyl-terminated butadiene-acrylonitrile rubber, 15-25 parts of hydroxyethylidene diphosphate, 10-12 parts of imidazoline, 10-15 parts of sodium molybdate, 5-10 parts of polyaspartic acid and 10-20 parts of auxiliary materials in sequence according to parts by weight, mechanically mixing and stirring the materials for 10-15min to obtain a mixed solution;

s5: and (3) putting the magnetic zinc oxide prepared in the S3 into the mixed solution, adding 2-5 parts by weight of lubricant, and heating and stirring continuously to enable the mixture to be in a molten state, thus obtaining the aluminum alloy anticorrosive material.

On the basis of the scheme, the modified carboxyl-terminated nitrile rubber is prepared by mixing carboxyl nitrile rubber and epoxy resin E51 according to the proportion of 3-5: 1-2.

Based on the scheme, in S5, the lubricant is one or two of stearic acid, butyl stearate or oleamide.

On the basis of the scheme, in S4, the auxiliary materials comprise the following components in parts by weight: 5-8 parts of ethylene glycol, 1-3 parts of a dispersing agent, 1-3 parts of a flatting agent, 1-4 parts of a wetting agent and 1-2 parts of a defoaming agent.

On the basis of the scheme, the flatting agent is any one of isophorone, diacetone alcohol and silicone oil.

On the basis of the scheme, the dispersing agent comprises the following components in parts by weight: 50-60 parts of butyl acetate, 20-30 parts of polydimethylsiloxane, 10-20 parts of dimethylbenzene and 10-15 parts of water.

On the basis of the scheme, the preparation method of the dispersing agent comprises the following steps:

s1: weighing polydimethylsiloxane, dimethylbenzene and water according to parts by weight, and sequentially mixing to prepare a mixed solution to be added into a titration container;

s2: weighing butyl acetate according to the weight parts, putting the butyl acetate into a reaction container, introducing nitrogen, bubbling the nitrogen instead of stirring, dropwise adding the mixed solution at a constant speed at normal temperature for reaction, distilling the mixed solution after dropwise adding is finished, and stopping when the pH value during distillation is controlled to be 7-7.5 to obtain the dispersing agent.

On the basis of the scheme, in S1, the frequency of the magnetic stirrer for stirring and adjusting the zinc oxide and the zinc sulfate solution is 300-500 HZ.

On the basis of the scheme, in S3, before the obtained material is placed in a muffle furnace to be calcined, the material needs to be washed for 3-5 times by distilled water, and after the washing is finished, the material needs to be dried.

The preparation method of the aluminum alloy anticorrosive material is applied to improving the anticorrosive performance of the aluminum alloy material.

Compared with the prior art, the invention has the beneficial effects that:

1. the coating has a good metal decoration effect after being coated, the surface can be smooth after being coated for one time, and the dispersing agent, the leveling agent, the wetting agent and the defoaming agent are arranged, so that the anticorrosive material can be mixed more uniformly, later-stage coating is facilitated, the anticorrosive material is kept in a long-time wet state by the wetting agent, the service life is prolonged, the magnetic zinc oxide particles are added, when the coating is coated on the surface of the aluminum alloy, the magnetic zinc oxide particles can generate an attraction effect with iron, cobalt and nickel simple substances in the aluminum alloy, the modified carboxyl-terminated butadiene-acrylonitrile rubber realizes an early adsorption effect, after the anticorrosive material is solidified, the attraction effect can be generated, and the adhesion stability of the anticorrosive material and the aluminum alloy material is enhanced by more than 20%;

2. the dispersing agent is prepared by uniformly mixing the raw materials in a liquid phase by a sol-gel method, polydimethylsiloxane and dimethylbenzene are bonded in an inorganic network by covalent bonds and coordination bonds through hydrolysis and polycondensation to form a stable transparent sol system in a solution, and the sol and butyl acetate are slowly polymerized to form gel with a three-dimensional network structure, so that the gel structure of the three-dimensional network structure is stable, and the polarity between the bonding sites is strong, so that the anticorrosive material is more stable and is not easy to fall off.

Detailed Description

The present invention will be described in further detail with reference to specific embodiments for further understanding of the features and technical means of the invention and the functions achieved.