CN109777255A - The preparation method of metal corrosion resistant coating - Google Patents
The preparation method of metal corrosion resistant coating Download PDFInfo
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- CN109777255A CN109777255A CN201910025065.4A CN201910025065A CN109777255A CN 109777255 A CN109777255 A CN 109777255A CN 201910025065 A CN201910025065 A CN 201910025065A CN 109777255 A CN109777255 A CN 109777255A
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Abstract
The present invention provides the preparation methods of metal corrosion resistant coating, comprising the following steps: the preparation of S1, oxide nano rare earth；S2, the preparation of polyaniline/oxide nano rare earth；S3, phosphate modified polyaniline/oxide nano rare earth；The preparation of S4, coating: by E-51 epoxy resin, epoxy modified silicone resin and polyamide are mixed and added into dimethylbenzene and n-butanol, it sufficiently dissolves after mixing evenly, defoaming agent and dispersing agent is added, after mixing evenly, active polyaniline/the oxide nano rare earth being prepared in step S3 is added, ultrasonic disperse is uniform, obtains metal corrosion resistant coating.The preparation method of metal corrosion resistant coating of the invention improves the corrosion resistance of coating after modified filler is added.
Description
Technical field
The present invention relates to paint fields, and in particular to the preparation method of metal corrosion resistant coating.
Background technique
Corrode ubiquitous, etching problem has obtained extensive concern in recent years, and serious corrosion such as seawater is to ship
The erosion of equipment causes weight huge economic loss, in some instances it may even be possible to cause great accident.The use of anticorrosive paint is a kind of energy
Enough effective behaves for reducing material surface corrosion, therefore obtained extensive research.Epoxy coating is, with it with adhesive force
By force, intensity height, chemicals-resistant, it is wear-resisting the features such as favor by anticorrosive coating tradesman, but its acid resistance and resistance to have
Solvent is poor, and water absorption rate is high, and the weakness such as boiling water resistance difference significantly limit its application, and the present invention spouts to epoxy-resin systems
It has gone modification, has improved its physical and mechanical property and chemical resistance.
Summary of the invention
Technical problems to be solved: the object of the present invention is to provide a kind of preparation method of metal corrosion resistant coating,
After modified filler is added, the corrosion resistance of coating is improved.
Technical solution: the preparation method of metal corrosion resistant coating, comprising the following steps:
The preparation of S1, oxide nano rare earth: rare earth oxide is added in hydrochloric acid solution, is heated to fully reacting, so
After be added PEG2000, distilled water dilution is added, ammonium hydroxide is then added and adjusts pH to 9, the reaction was continued generates rare earth suspension, will
Suspension is spray-dried, and is finally calcined the solid of spray drying, is obtained oxide nano rare earth；
S2, the preparation of polyaniline/oxide nano rare earth: the oxide nano rare earth and benzene that will be prepared in step S1
Amine is dissolved in aqueous solutions of organic acids, after mixing evenly, ammonium persulfate is added, reaction is sufficiently stirred, is precipitated, precipitating is washed
Drying is washed, polyaniline/oxide nano rare earth is obtained；
S3, phosphate modified polyaniline/oxide nano rare earth: will be anti-containing the heating of phosphate ester surfactants solution
It answers, unmodified polyaniline/oxide nano rare earth is added and is sufficiently stirred, then filter, is dry, crushing, sieving, obtaining activity
Polyaniline/oxide nano rare earth；
The preparation of S4, coating: by E-51 epoxy resin, epoxy modified silicone resin and polyamide are mixed and added into
After mixing evenly, defoaming agent and dispersing agent is added in dimethylbenzene and n-butanol, sufficiently dissolution, after mixing evenly, is added in step S3
Active polyaniline/the oxide nano rare earth being prepared, ultrasonic disperse is uniform, obtains metal corrosion resistant coating.
Further, oxide nano rare earth is CeO in the step S12, Nd2O3, La2O3In it is any.
Further, the temperature calcined in the step S1 is 600-900 DEG C, time 2-5h.
Further, the aniline solution of 5-20mL is added in the step S2 in the rare earth oxide of every 0.01mol.
Further, the temperature of temperature reaction is 50-60 DEG C in the step S3, mixing time 60-180min.
Further, E-51 epoxy resin in the step S4, epoxy modified silicone resin, polyamide, diformazan
The mass ratio of benzene, n-butanol and active polyaniline/oxide nano rare earth is 30-50:10-20:20-30:25-45:15-
25:20-35。
The utility model has the advantages that coating of the invention has the advantage that due to gained compound after rare earth element and resin reaction
Bond energy is extremely strong, therefore the performances such as heat-resisting, corrosion-resistant of resin are improved, and polyaniline can be such that metal is passivated, in metal surface
Form the oxide layer (Fe of its protective effect3O4With γ-Fe2O3), therefore low corrosion of metal rate, the metal under film obtains
It is effectively protected, the group for phosphate ester-containing of working together and the interaction of metal surface, forms fine and close phosphate protective film,
Advanced optimize performance.
Specific embodiment
Embodiment 1
The preparation method of metal corrosion resistant coating, comprising the following steps:
The preparation of S1, oxide nano rare earth: by CeO2It is added in hydrochloric acid solution, is heated to fully reacting, is then added
PEG2000, is added distilled water dilution, and ammonium hydroxide is then added and adjusts pH to 9, and the reaction was continued generates rare earth suspension, by suspension
It is spray-dried, is finally calcined the solid of spray drying, the temperature of calcining is 600 DEG C, and time 5h obtains nanometer
Rare earth oxide；
S2, the preparation of polyaniline/oxide nano rare earth: the oxide nano rare earth and benzene that will be prepared in step S1
Amine is dissolved in aqueous solutions of organic acids, and the aniline solution that 5mL is added in the rare earth oxide of every 0.01mol adds after mixing evenly
Enter ammonium persulfate, reaction is sufficiently stirred, is precipitated, washing of precipitate is dry, obtain polyaniline/oxide nano rare earth；
S3, phosphate modified polyaniline/oxide nano rare earth: will be anti-containing the heating of phosphate ester surfactants solution
It answers, temperature is 50 DEG C, mixing time 180min, and unmodified polyaniline/oxide nano rare earth is added and is sufficiently stirred, then
Filtering, dry, crushing, sieving, obtain active polyaniline/oxide nano rare earth；
The preparation of S4, coating: by E-51 epoxy resin, epoxy modified silicone resin and polyamide are mixed and added into
After mixing evenly, defoaming agent and dispersing agent is added in dimethylbenzene and n-butanol, sufficiently dissolution, after mixing evenly, is added in step S3
Active polyaniline/the oxide nano rare earth being prepared, E-51 epoxy resin, epoxy modified silicone resin, polyamide resin
The mass ratio of rouge, dimethylbenzene, n-butanol and active polyaniline/oxide nano rare earth is 30:20:20:45:15:20, ultrasound
It is uniformly dispersed, obtains metal corrosion resistant coating.
Embodiment 2
The preparation method of metal corrosion resistant coating, comprising the following steps:
The preparation of S1, oxide nano rare earth: by Nd2O3It is added in hydrochloric acid solution, is heated to fully reacting, is then added
PEG2000, is added distilled water dilution, and ammonium hydroxide is then added and adjusts pH to 9, and the reaction was continued generates rare earth suspension, by suspension
It is spray-dried, is finally calcined the solid of spray drying, the temperature of calcining is 900 DEG C, and time 2h obtains nanometer
Rare earth oxide；
S2, the preparation of polyaniline/oxide nano rare earth: the oxide nano rare earth and benzene that will be prepared in step S1
Amine is dissolved in aqueous solutions of organic acids, and the aniline solution of 20mL is added in the rare earth oxide of every 0.01mol, after mixing evenly,
Ammonium persulfate is added, reaction is sufficiently stirred, is precipitated, washing of precipitate is dry, obtain polyaniline/oxide nano rare earth；
S3, phosphate modified polyaniline/oxide nano rare earth: will be anti-containing the heating of phosphate ester surfactants solution
It answers, temperature is 60 DEG C, mixing time 60min, and unmodified polyaniline/oxide nano rare earth is added and is sufficiently stirred, then
Filtering, dry, crushing, sieving, obtain active polyaniline/oxide nano rare earth；
The preparation of S4, coating: by E-51 epoxy resin, epoxy modified silicone resin and polyamide are mixed and added into
After mixing evenly, defoaming agent and dispersing agent is added in dimethylbenzene and n-butanol, sufficiently dissolution, after mixing evenly, is added in step S3
Active polyaniline/the oxide nano rare earth being prepared, E-51 epoxy resin, epoxy modified silicone resin, polyamide resin
The mass ratio of rouge, dimethylbenzene, n-butanol and active polyaniline/oxide nano rare earth is 50:10:30:25:25:35, ultrasound
It is uniformly dispersed, obtains metal corrosion resistant coating.
Embodiment 3
The preparation method of metal corrosion resistant coating, comprising the following steps:
The preparation of S1, oxide nano rare earth: by La2O3It is added in hydrochloric acid solution, is heated to fully reacting, is then added
PEG2000, is added distilled water dilution, and ammonium hydroxide is then added and adjusts pH to 9, and the reaction was continued generates rare earth suspension, by suspension
It is spray-dried, is finally calcined the solid of spray drying, the temperature of calcining is 700 DEG C, and time 4h obtains nanometer
Rare earth oxide；
S2, the preparation of polyaniline/oxide nano rare earth: the oxide nano rare earth and benzene that will be prepared in step S1
Amine is dissolved in aqueous solutions of organic acids, and the aniline solution of 10mL is added in the rare earth oxide of every 0.01mol, after mixing evenly,
Ammonium persulfate is added, reaction is sufficiently stirred, is precipitated, washing of precipitate is dry, obtain polyaniline/oxide nano rare earth；
S3, phosphate modified polyaniline/oxide nano rare earth: will be anti-containing the heating of phosphate ester surfactants solution
It answers, temperature is 55 DEG C, mixing time 90min, and unmodified polyaniline/oxide nano rare earth is added and is sufficiently stirred, then
Filtering, dry, crushing, sieving, obtain active polyaniline/oxide nano rare earth；
The preparation of S4, coating: by E-51 epoxy resin, epoxy modified silicone resin and polyamide are mixed and added into
After mixing evenly, defoaming agent and dispersing agent is added in dimethylbenzene and n-butanol, sufficiently dissolution, after mixing evenly, is added in step S3
Active polyaniline/the oxide nano rare earth being prepared, E-51 epoxy resin, epoxy modified silicone resin, polyamide resin
The mass ratio of rouge, dimethylbenzene, n-butanol and active polyaniline/oxide nano rare earth is 35:18:22:30:22:25, ultrasound
It is uniformly dispersed, obtains metal corrosion resistant coating.
Embodiment 4
The preparation method of metal corrosion resistant coating, comprising the following steps:
The preparation of S1, oxide nano rare earth: by CeO2It is added in hydrochloric acid solution, is heated to fully reacting, is then added
PEG2000, is added distilled water dilution, and ammonium hydroxide is then added and adjusts pH to 9, and the reaction was continued generates rare earth suspension, by suspension
It is spray-dried, is finally calcined the solid of spray drying, the temperature of calcining is 800 DEG C, and time 3h obtains nanometer
Rare earth oxide；
S2, the preparation of polyaniline/oxide nano rare earth: the oxide nano rare earth and benzene that will be prepared in step S1
Amine is dissolved in aqueous solutions of organic acids, and the aniline solution of 15mL is added in the rare earth oxide of every 0.01mol, after mixing evenly,
Ammonium persulfate is added, reaction is sufficiently stirred, is precipitated, washing of precipitate is dry, obtain polyaniline/oxide nano rare earth；
S3, phosphate modified polyaniline/oxide nano rare earth: will be anti-containing the heating of phosphate ester surfactants solution
It answers, temperature is 60 DEG C, mixing time 140min, and unmodified polyaniline/oxide nano rare earth is added and is sufficiently stirred, then
Filtering, dry, crushing, sieving, obtain active polyaniline/oxide nano rare earth；
The preparation of S4, coating: by E-51 epoxy resin, epoxy modified silicone resin and polyamide are mixed and added into
After mixing evenly, defoaming agent and dispersing agent is added in dimethylbenzene and n-butanol, sufficiently dissolution, after mixing evenly, is added in step S3
Active polyaniline/the oxide nano rare earth being prepared, E-51 epoxy resin, epoxy modified silicone resin, polyamide resin
The mass ratio of rouge, dimethylbenzene, n-butanol and active polyaniline/oxide nano rare earth is 45:12:28:40:18:30, ultrasound
It is uniformly dispersed, obtains metal corrosion resistant coating.
Embodiment 5
The preparation method of metal corrosion resistant coating, comprising the following steps:
The preparation of S1, oxide nano rare earth: by La2O3It is added in hydrochloric acid solution, is heated to fully reacting, is then added
PEG2000, is added distilled water dilution, and ammonium hydroxide is then added and adjusts pH to 9, and the reaction was continued generates rare earth suspension, by suspension
It is spray-dried, is finally calcined the solid of spray drying, the temperature of calcining is 750 DEG C, and time 4h obtains nanometer
Rare earth oxide；
S2, the preparation of polyaniline/oxide nano rare earth: the oxide nano rare earth and benzene that will be prepared in step S1
Amine is dissolved in aqueous solutions of organic acids, and the aniline solution of 12mL is added in the rare earth oxide of every 0.01mol, after mixing evenly,
Ammonium persulfate is added, reaction is sufficiently stirred, is precipitated, washing of precipitate is dry, obtain polyaniline/oxide nano rare earth；
S3, phosphate modified polyaniline/oxide nano rare earth: will be anti-containing the heating of phosphate ester surfactants solution
It answers, temperature is 58 DEG C, mixing time 120min, and unmodified polyaniline/oxide nano rare earth is added and is sufficiently stirred, then
Filtering, dry, crushing, sieving, obtain active polyaniline/oxide nano rare earth；
The preparation of S4, coating: by E-51 epoxy resin, epoxy modified silicone resin and polyamide are mixed and added into
After mixing evenly, defoaming agent and dispersing agent is added in dimethylbenzene and n-butanol, sufficiently dissolution, after mixing evenly, is added in step S3
Active polyaniline/the oxide nano rare earth being prepared, E-51 epoxy resin, epoxy modified silicone resin, polyamide resin
The mass ratio of rouge, dimethylbenzene, n-butanol and active polyaniline/oxide nano rare earth is 40:15:25:35:20:28, ultrasound
It is uniformly dispersed, obtains metal corrosion resistant coating.
Comparative example 1
Compared with Example 1, it is added without rare earth oxide in this comparative example, saves the step in step S1, remaining step
In save the addition of nano-oxide, other are all the same.
Comparative example 2
Compared with Example 1, it is added without polyaniline in this comparative example, saves the step in step S2, saved in remaining step
The addition of polyaniline is gone, other are all the same.
Comparative example 3
Compared with Example 1, the step in step S3 is saved in this comparative example, other are all the same.
Impact property: it is measured referring to GB/T 1732-1993 film impact resistance measuring method；Resistance to corrosive chemicals energy: root
It is measured according to GB/T18593-2001；Salt spray test: it is measured according to GB/T 1771-1991；Humidity resistance: according to GB/T 1740-
2007。
| Impact resistance (cm) | Corrosion-resistant (10%NaCl) | Salt spray test | Humidity resistance (400 DEG C, 3h) | |
| Embodiment 1 | 50 | Bubble-free, cracking and removing | Bubble-free, cracking and removing | Without blistering, do not fall off |
| Embodiment 2 | 55 | Bubble-free, cracking and removing | Bubble-free, cracking and removing | Without blistering, do not fall off |
| Embodiment 3 | 50 | Bubble-free, cracking and removing | Bubble-free, cracking and removing | Without blistering, do not fall off |
| Embodiment 4 | 55 | Bubble-free, cracking and removing | Bubble-free, cracking and removing | Without blistering, do not fall off |
| Embodiment 5 | 55 | Bubble-free, cracking and removing | Bubble-free, cracking and removing | Without blistering, do not fall off |
| Comparative example 1 | 45 | There is blistering | It blisters and cracks | Blistering |
| Comparative example 2 | 45 | Cracking and removing | Removing | Without blistering, do not fall off |
| Comparative example 3 | 45 | Cracking and removing | Removing | Without blistering, do not fall off |
Claims (6)
1. the preparation method of metal corrosion resistant coating, which comprises the following steps:
The preparation of S1, oxide nano rare earth: by rare earth oxide be added hydrochloric acid solution in, be heated to fully reacting, then plus
Enter PEG2000, distilled water dilution is added, ammonium hydroxide is then added and adjusts pH to 9, the reaction was continued generates rare earth suspension, will suspend
Liquid is spray-dried, and is finally calcined the solid of spray drying, is obtained oxide nano rare earth；
S2, the preparation of polyaniline/oxide nano rare earth: the oxide nano rare earth and aniline that are prepared in step S1 is molten
Solution is in aqueous solutions of organic acids, after mixing evenly, ammonium persulfate is added, reaction is sufficiently stirred, is precipitated, washing of precipitate is done
It is dry, obtain polyaniline/oxide nano rare earth；
S3, phosphate modified polyaniline/oxide nano rare earth: the temperature reaction of phosphate ester surfactants solution will be contained, added
Enter unmodified polyaniline/oxide nano rare earth to be sufficiently stirred, then filters, is dry, crushing, sieving, obtaining active polyphenyl
Amine/oxide nano rare earth；
The preparation of S4, coating: by E-51 epoxy resin, epoxy modified silicone resin and polyamide are mixed and added into diformazan
After mixing evenly, defoaming agent and dispersing agent is added in benzene and n-butanol, sufficiently dissolution, after mixing evenly, is added in step S3 and prepares
Obtained active polyaniline/oxide nano rare earth, ultrasonic disperse is uniform, obtains metal corrosion resistant coating.
2. the preparation method of metal corrosion resistant coating according to claim 1, it is characterised in that: received in the step S1
Rice rare earth oxide is CeO2, Nd2O3, La2O3In it is any.
3. the preparation method of metal corrosion resistant coating according to claim 1, it is characterised in that: forged in the step S1
The temperature of burning is 600-900 DEG C, time 2-5h.
4. the preparation method of metal corrosion resistant coating according to claim 1, it is characterised in that: every in the step S2
The aniline solution of 5-20mL is added in the rare earth oxide of 0.01mol.
5. the preparation method of metal corrosion resistant coating according to claim 1, it is characterised in that: risen in the step S3
The temperature of temperature reaction is 50-60 DEG C, mixing time 60-180min.
6. the preparation method of metal corrosion resistant coating according to claim 1, it is characterised in that: E- in the step S4
51 epoxy resin, epoxy modified silicone resin, polyamide, dimethylbenzene, n-butanol and active polyaniline/nano rare earth
The mass ratio of oxide is 30-50:10-20:20-30:25-45:15-25:20-35.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116179053A (en) * | 2023-03-22 | 2023-05-30 | 山东雪地铝业科技有限公司 | Production method of corrosion-resistant aluminum alloy profile for ship |
| CN116731590A (en) * | 2023-08-14 | 2023-09-12 | 赣州海盛硬质合金有限公司 | Preparation process of corrosion-resistant heat-insulating hard alloy coating |
| CN117343611A (en) * | 2023-12-06 | 2024-01-05 | 山东理工大学 | Modified epoxy paint and preparation method and application thereof |
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| CN1528844A (en) * | 2003-10-14 | 2004-09-15 | 中国人民解放军海军后勤技术装备研究 | Flexible ceramic wear-resistant heat-proof dual-anticorrosive coating |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116179053A (en) * | 2023-03-22 | 2023-05-30 | 山东雪地铝业科技有限公司 | Production method of corrosion-resistant aluminum alloy profile for ship |
| CN116731590A (en) * | 2023-08-14 | 2023-09-12 | 赣州海盛硬质合金有限公司 | Preparation process of corrosion-resistant heat-insulating hard alloy coating |
| CN116731590B (en) * | 2023-08-14 | 2023-10-24 | 赣州海盛硬质合金有限公司 | Preparation process of corrosion-resistant heat-insulating hard alloy coating |
| CN117343611A (en) * | 2023-12-06 | 2024-01-05 | 山东理工大学 | Modified epoxy paint and preparation method and application thereof |
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