CN110697672A - Preparation method of zinc phosphate for water-based anticorrosive paint - Google Patents
Preparation method of zinc phosphate for water-based anticorrosive paint Download PDFInfo
- Publication number
- CN110697672A CN110697672A CN201911152036.0A CN201911152036A CN110697672A CN 110697672 A CN110697672 A CN 110697672A CN 201911152036 A CN201911152036 A CN 201911152036A CN 110697672 A CN110697672 A CN 110697672A
- Authority
- CN
- China
- Prior art keywords
- oxide particles
- metal
- water
- zinc phosphate
- metal oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 title claims abstract description 28
- 229910000165 zinc phosphate Inorganic materials 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000003973 paint Substances 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims description 7
- 239000002245 particle Substances 0.000 claims abstract description 37
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 28
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 28
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 25
- 230000000694 effects Effects 0.000 claims abstract description 24
- 239000007769 metal material Substances 0.000 claims abstract description 18
- 239000011787 zinc oxide Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 13
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 6
- 239000006011 Zinc phosphide Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- HOKBIQDJCNTWST-UHFFFAOYSA-N phosphanylidenezinc;zinc Chemical compound [Zn].[Zn]=P.[Zn]=P HOKBIQDJCNTWST-UHFFFAOYSA-N 0.000 claims description 5
- 229940048462 zinc phosphide Drugs 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- 230000003472 neutralizing effect Effects 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract description 23
- 238000005260 corrosion Methods 0.000 abstract description 17
- 230000007797 corrosion Effects 0.000 abstract description 15
- 229910021645 metal ion Inorganic materials 0.000 abstract description 4
- 229910021654 trace metal Inorganic materials 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 239000000049 pigment Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 239000005955 Ferric phosphate Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 229940032958 ferric phosphate Drugs 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 150000005837 radical ions Chemical class 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/37—Phosphates of heavy metals
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/08—Other phosphides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/04—Compounds of zinc
- C09C1/046—Compounds of zinc containing phosphorus
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention provides a method for preparing zinc phosphate for water-based anticorrosive paint, which is characterized in that trace metal oxide particles are doped in zinc oxide particles, the activity of metal elements in the metal oxide particles is higher than that of a protected metal material, the activity is higher than that of the protected metal material, so that the metal oxide and the protected metal form corrosion couple, and the zinc phosphate contains metal ions with better activity than that of the protected metal, so that the protected metal can be used as a cathode, so that no electron loss occurs, and better anticorrosive effect can be achieved.
Description
Technical Field
The invention relates to a water-based anticorrosive coating, in particular to a preparation method of zinc phosphate specially used for the water-based anticorrosive coating.
Background
The Metallic material is damaged by the surrounding medium, known as Metallic Corrosion (Metallic Corrosion). Corrosion of metals is the most common form of corrosion. During corrosion, a chemical or electrochemical multiphase reaction occurs at the interface of the metal, causing the metal to change to an oxidized (ionic) state. This can significantly reduce the mechanical properties of the metal material such as strength, plasticity, toughness, etc., destroy the geometric shape of the metal member, increase the wear between parts, deteriorate the physical properties of electricity, optics, etc., shorten the service life of the equipment, and even cause disastrous accidents such as fire, explosion, etc. For this purpose, measures must be taken to protect the metal material against corrosion. At present, the most economical and practical mode is to coat anticorrosive paint on the surface of the metal material.
The existing water-based anticorrosive paint generally contains zinc phosphide, and zinc phosphate is a white nontoxic antirust pigment, is a new generation nontoxic pollution-free antirust pigment with excellent antirust corrosion effect, can effectively replace the traditional antirust pigment containing heavy metals of lead and chromium, and is a new variety of antirust pigments with ideal use effect. The paint prepared by zinc phosphate has excellent antirust performance and water resistance, and can be used for preparing various water-resistant, acid-resistant and anticorrosive paints in paints of various binders, such as: phenol formaldehyde paint, epoxy paint, internal olefine acid paint, thick paste paint and water-soluble resin paint, widely used in antirust paint in the fields of ship, automobile, industrial machinery, light metal, household electrical appliance and metal container for food, etc., zinc phosphate has strong condensation ability in ferric ion, the radical ion of the zinc phosphate reacts with iron anode to form a firm protective film using ferric phosphate as main body, the compact purified film is insoluble in water, has high hardness and excellent adhesion and shows excellent antirust performance, and the zinc phosphate gene has good activity and can react with a plurality of metal ions to generate complex, so that the antirust effect is good.
The essence of metal corrosion is that metal atoms lose electrons and become ions, oxidation reaction occurs on metals, and the reason why the metal atoms lose electrons is that the self-corrosion potential is low, so when an aqueous anticorrosive material containing zinc phosphate reacts with the surface of a metal material, the self-corrosion potential of the metal material is reduced to a certain extent, which may affect the anticorrosive effect of the aqueous anticorrosive paint, and therefore further improvement on the existing zinc phosphate is needed.
Disclosure of Invention
In view of the above-mentioned disadvantages of the prior art, the present invention aims to provide a method for preparing zinc phosphate for an aqueous anticorrosive coating, which can increase the corrosion potential of a metal substrate, inhibit flash corrosion, and achieve a better anticorrosive effect.
In order to achieve the above and other related objects, the present invention provides a method for preparing zinc phosphate for a water-based anticorrosive coating, comprising the steps of: 1) doping metal oxide particles in the zinc oxide particles, wherein the activity of metal elements in the metal oxide particles is greater than that of the protected metal material; 2) reacting zinc oxide doped with metal oxide particles with a phosphoric acid solution; 3) neutralizing the reacted solution by using an alkaline compound, and adjusting the pH value of the solution; 4) and filtering, washing and drying the solution to obtain zinc phosphide powder.
Preferably, the metal oxide particles are magnesium oxide particles or aluminum oxide particles.
Preferably, the molar part ratio of the metal oxide particles to the zinc oxide particles is 1: 30-100.
Preferably, the pH value in step 3) is adjusted to 3.0-3.5.
Preferably, in the step 2), the zinc oxide doped with metal oxide particles is reacted with the phosphoric acid solution while heating to 70 to 80 ° and continuously stirring.
Preferably, the alkaline compound in step 3) is sodium hydroxide.
The technical scheme has the following beneficial effects: according to the preparation method of the zinc phosphate of the water-based anticorrosive coating, trace metal oxide particles are doped in zinc oxide particles, the activity of metal elements in the metal oxide should be greater than that of a protected metal material, and the activity should be greater than that of the protected metal material, so that the metal oxide and the protected metal form a corrosion couple, and the zinc phosphate contains metal ions with better activity than that of the protected metal, so that the protected metal can be used as a cathode, and thus, no electron loss exists, and a better anticorrosive effect can be achieved.
Detailed Description
The invention provides a preparation method of zinc phosphate for a water-based anticorrosive coating, which comprises the following steps:
1) the zinc oxide particles are doped with metal oxide particles, the activity of the metal element in the metal oxide should be greater than the activity of the protected metal material, i.e. the metal element in the doped metal oxide particles should be more reactive than the protected metal element. The amount of the doped metal oxide particles is not so large that there is a possibility that the complexing effect of zinc phosphate with the metal material is affected. The molar part ratio of the metal oxide particles to the zinc oxide particles is generally 1: 30-100 parts of;
2) reacting zinc oxide doped with metal oxide particles with a phosphoric acid solution; in order to increase the reaction rate during the reaction, the temperature of the phosphoric acid solution is raised to 70 to 80 ℃ and the solution is continuously stirred.
3) Neutralizing the reacted solution with alkaline compound to regulate pH value to 3.0-3.5 for zinc phosphide powder crystallization.
4) And filtering, washing and drying the solution to finally obtain the zinc phosphide powder.
Since most of the metal materials to be protected are materials such as steel and iron, magnesium oxide particles or aluminum oxide particles are preferably used as the metal oxide particles. Because the activity of the magnesium element and the aluminum element is greater than that of the iron element, a corrosion couple can be formed between the magnesium element or the aluminum element and the iron element on the premise of not influencing the complexation of zinc phosphate and a metal material, so that the protected iron metal can be used as a cathode to be protected, thereby achieving the purpose of inhibiting the flash corrosion and improving the using effect of the anticorrosive coating.
The technical indexes of the water-based anticorrosive paint prepared by adopting the zinc phosphate are as follows:
the technical scheme has the following beneficial effects: according to the preparation method of the zinc phosphate of the water-based anticorrosive coating, trace metal oxide particles are doped in zinc oxide particles, the activity of metal elements in the metal oxide is higher than that of a protected metal material, and the activity is higher than that of the protected metal material, so that the metal oxide and the protected metal form corrosion points, and the zinc phosphate contains metal ions with higher activity than that of the protected metal, so that the protected metal can be used as a cathode, and no electron loss exists, so that a better anticorrosive effect can be achieved. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. A preparation method of zinc phosphate for water-based anticorrosive paint is characterized by comprising the following steps:
1) doping metal oxide particles in the zinc oxide particles, wherein the activity of metal elements in the metal oxide particles is greater than that of the protected metal material;
2) reacting zinc oxide doped with metal oxide particles with a phosphoric acid solution;
3) neutralizing the reacted solution by using an alkaline compound, and adjusting the pH value of the solution;
4) and filtering, washing and drying the solution to obtain zinc phosphide powder.
2. The method for preparing zinc phosphate for a water-based anticorrosive coating according to claim 1, characterized in that: the metal oxide particles are magnesium oxide particles or aluminum oxide particles.
3. The method for preparing zinc phosphate for a water-based anticorrosive coating according to claim 1, characterized in that: the molar part ratio of the metal oxide particles to the zinc oxide particles is 1: 30-100.
4. The method for preparing zinc phosphate for a water-based anticorrosive coating according to claim 1, characterized in that: the PH value in the step 3) is adjusted to 3.0-3.5.
5. The method for preparing zinc phosphate for a water-based anticorrosive coating according to claim 1, characterized in that: in the step 2), when the zinc oxide doped with the metal oxide particles reacts with the phosphoric acid solution, the temperature is heated to 70-80 ℃ and the stirring is continuously carried out.
6. The method for preparing zinc phosphate for a water-based anticorrosive coating according to claim 1, characterized in that: in the step 3), the alkaline compound is sodium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911152036.0A CN110697672B (en) | 2019-11-22 | 2019-11-22 | Preparation method of zinc phosphate for water-based anticorrosive paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911152036.0A CN110697672B (en) | 2019-11-22 | 2019-11-22 | Preparation method of zinc phosphate for water-based anticorrosive paint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110697672A true CN110697672A (en) | 2020-01-17 |
| CN110697672B CN110697672B (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911152036.0A Expired - Fee Related CN110697672B (en) | 2019-11-22 | 2019-11-22 | Preparation method of zinc phosphate for water-based anticorrosive paint |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4153465A (en) * | 1976-12-15 | 1979-05-08 | Bayer Aktiengesellschaft | CaZn2 (PO4)2 .2H2 O anticorrosion pigment |
| CN101219885A (en) * | 2008-01-21 | 2008-07-16 | 哈尔滨工业大学 | Fire resistant zinc aluminum phosphate based gelled material and method of manufacturing the same |
| CN102041547A (en) * | 2010-12-14 | 2011-05-04 | 北京大学 | Method for preparing phosphor-doped zinc oxide nanowires |
| CN102225751A (en) * | 2011-03-24 | 2011-10-26 | 广西冶金研究院 | Synthetic method of aluminium zinc phosphate nanocrystal |
| CN109534311A (en) * | 2018-12-06 | 2019-03-29 | 江苏申隆锌业有限公司 | A kind of preparation method of zinc aluminum phosphate |
| CN110087619A (en) * | 2016-12-21 | 2019-08-02 | 高露洁-棕榄公司 | Oral care composition and application method |
-
2019
- 2019-11-22 CN CN201911152036.0A patent/CN110697672B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4153465A (en) * | 1976-12-15 | 1979-05-08 | Bayer Aktiengesellschaft | CaZn2 (PO4)2 .2H2 O anticorrosion pigment |
| CN101219885A (en) * | 2008-01-21 | 2008-07-16 | 哈尔滨工业大学 | Fire resistant zinc aluminum phosphate based gelled material and method of manufacturing the same |
| CN102041547A (en) * | 2010-12-14 | 2011-05-04 | 北京大学 | Method for preparing phosphor-doped zinc oxide nanowires |
| CN102225751A (en) * | 2011-03-24 | 2011-10-26 | 广西冶金研究院 | Synthetic method of aluminium zinc phosphate nanocrystal |
| CN110087619A (en) * | 2016-12-21 | 2019-08-02 | 高露洁-棕榄公司 | Oral care composition and application method |
| CN109534311A (en) * | 2018-12-06 | 2019-03-29 | 江苏申隆锌业有限公司 | A kind of preparation method of zinc aluminum phosphate |
Non-Patent Citations (3)
| Title |
|---|
| 厉家騄: "磷酸盐颜料的发展新动向", 《无机盐工业》 * |
| 徐红恩等: "磷酸盐防锈颜料的研究进展", 《河南化工》 * |
| 黄尚顺等: "磷酸盐防锈颜料的研究进展", 《企业科技与发展》 * |
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| Publication number | Publication date |
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| CN110697672B (en) | 2021-05-11 |
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Granted publication date: 20210511 |