CN111748230A - Preparation method of organic sericite for anticorrosive coating - Google Patents

Preparation method of organic sericite for anticorrosive coating Download PDF

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Publication number
CN111748230A
CN111748230A CN202010586685.8A CN202010586685A CN111748230A CN 111748230 A CN111748230 A CN 111748230A CN 202010586685 A CN202010586685 A CN 202010586685A CN 111748230 A CN111748230 A CN 111748230A
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China
Prior art keywords
organic
sericite
component
anticorrosive coating
resin
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Pending
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CN202010586685.8A
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Chinese (zh)
Inventor
孟凡帝
蔡亚慧
刘莉
崔宇
郑宏鹏
王福会
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Northeastern University China
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Northeastern University China
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Priority to CN202010586685.8A priority Critical patent/CN111748230A/en
Publication of CN111748230A publication Critical patent/CN111748230A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • C09C1/40—Compounds of aluminium
    • C09C1/405—Compounds of aluminium containing combined silica, e.g. mica
    • 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
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
    • 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
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/10—Treatment with macromolecular organic compounds
    • 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
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/12—Treatment with organosilicon compounds

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  • Chemical & Material Sciences (AREA)
  • Organic 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 discloses a preparation method of organic sericite for an anticorrosive coating, which comprises the following steps: mixing sericite and organic epoxy resin, adding into a ball mill, and ball milling at high temperature, wherein the temperature is controlled at 160-200 ℃, the rotating speed is 400-600 r/min, and the time is 3-6 h. And centrifuging, filtering and drying the obtained product to obtain the surface-organized sericite powder. Mixing the organic sericite powder with epoxy resin, a diluent and an additive, mechanically stirring to prepare a component A, and mixing the component A with a component B curing agent to prepare the sericite anticorrosive coating with the organic surface. The method simplifies the process flow, shortens the reaction time, is green and environment-friendly, has high automation degree and firm surface grafting, and is suitable for industrial mass production.

Description

Preparation method of organic sericite for anticorrosive coating
Technical Field
The invention relates to the field of metal corrosion protection, in particular to a preparation method of organic sericite for an anticorrosive coating.
Background
Sericite is a natural two-dimensional sheet silicate, and is one of the most widely used inorganic fillers in the field of metal corrosion protection due to its good physical stability, aging resistance and low cost. However, sericite is hydrophilic and oleophobic, and the dispersibility of sericite is poor when sericite is directly added into an organic coating, so that a large number of pores and cracks are formed after the coating is formed into a film due to the interface problem, and the effects of enhancing the compactness of the coating and shielding a corrosive medium are not achieved.
At present, various physical and chemical methods are commonly adopted to carry out surface coating or surface grafting modification on the filler aiming at the problem of poor interface compatibility between mica and organic resin. The method has the disadvantages that the chemical grafting modification process is complex and is not easy to be applied industrially; the physical coating modification has weak adsorption strength, and the improvement effect needs to be enhanced.
Disclosure of Invention
The invention aims to provide a preparation method of organic sericite for an anticorrosive coating, which realizes good dispersibility of mica inorganic filler by a high-temperature mechanical ball milling method, and simultaneously has excellent compatibility and bonding strength with resin in the organic coating, thereby obtaining the anticorrosive coating with good barrier property and mechanical property.
The technical scheme of the invention is as follows:
a preparation method of organic sericite for an anticorrosive coating comprises the following specific steps:
(1) taking organic resin, adding sericite filler into the organic resin, mixing and stirring uniformly, transferring into a grinding tank, carrying out organic treatment by adopting a high-temperature mechanical ball milling method, and centrifuging, filtering, and drying the obtained product to obtain surface organic sericite powder;
(2) mixing the surface organic mica powder in the step (1) with film forming material resin, additives, diluents and other fillers, mechanically stirring and mixing to obtain a component A, and simultaneously taking a component B curing agent and the component A to ultrasonically stir and mix to obtain the surface organic mica anticorrosive paint;
the preparation method of the organic sericite for the anti-corrosion coating preferably comprises the step (1), wherein the organic resin comprises but is not limited to one of epoxy resin, organic silicon resin and organic fluorine resin.
The preferable scheme of the preparation method of the organic sericite for the anticorrosive coating is that in the step (1), the organic modification treatment is that the mixture is subjected to high-energy ball milling for 3-6 hours at the temperature of 150-220 ℃ and the temperature of 400-600 r/min, taken out, repeatedly centrifuged and filtered for three times, and the product is dried in an oven at the temperature of 60 ℃ for 24 hours to obtain the surface organic sericite powder.
The preferable scheme of the preparation method of the organic sericite for the anticorrosive coating is that in the step (1), the mass ratio of the organic resin to the sericite is 0.2-1:1, and the material ratio of the high-energy ball milling is 5-10: 1.
The preferable scheme of the preparation method of the organic sericite for the anticorrosive coating is that in the step (1), the other fillers include but are not limited to one or more of iron oxide red, basalt and glass flakes.
The preferable scheme of the preparation method of the organic sericite for the anticorrosive coating is that in the step (2), the curing agent of the component B comprises an amine, ether or anhydride curing agent, and the mass ratio of the organic resin in the component B to the organic resin in the component A is 0.2-0.8: 1.
Compared with the prior art, the surface organic sericite anticorrosive paint prepared by the method has the following advantages:
1. the process flow is simplified, the direct combination of the inorganic filler and the organic resin is realized, the reaction time is shortened, and the reaction efficiency is improved;
2. the modified surface organic grafting effect is good, the organic resin grafting is firm, and the organic resin is not easy to fall off;
3. the invention has high automation degree, high product yield and high stability;
4. the related organic solvent of the invention has small usage amount, and reduces environmental pollution.
Drawings
FIG. 1 is an infrared spectrum of sericite and surface-organized sericite powder;
FIG. 2 is a comparison result of microscopic surface morphologies of sericite and surface-organized sericite powder;
FIG. 3 is a comparison of the macroscopic corrosion of sericite and organic surface sericite anticorrosive coating after soaking in 3.5. wt% NaCl solution for 1000 hours.
Detailed Description
The invention is further described below with reference to the following examples. These examples are merely illustrative of the best mode of carrying out the invention and do not limit the scope of the invention in any way.
Example 1
In this embodiment, the method for preparing the organic sericite for the anticorrosive coating specifically comprises the following steps:
(1) taking organic resin, adding sericite filler into the organic resin, mixing and stirring uniformly, transferring into a grinding tank, carrying out organic treatment by adopting a high-temperature mechanical ball milling method, and centrifuging, filtering, and drying the obtained product to obtain surface organic sericite powder;
(2) mixing the surface organic mica powder in the step (1) with film forming material resin, additives, diluents and other fillers, mechanically stirring and mixing to obtain a component A, and simultaneously taking a component B curing agent and the component A to ultrasonically stir and mix to obtain the surface organic mica anticorrosive paint;
in the step (1), the organic resin includes, but is not limited to, one of epoxy resin, silicone resin and organic fluorine resin.
In the step (1), the organic modification treatment is that the mixture is subjected to high-energy ball milling for 3-6h at the temperature of 150-220 ℃ and the speed of 400-600 r/min, taken out, repeatedly centrifuged and filtered for three times, and the product is dried in an oven at the temperature of 60 ℃ for 24h to obtain the surface organic sericite powder. Preferably, the heating temperature is 160 ℃, the rotating speed is 500r/min, and the ball milling time is 5 h.
In the step (1), the mass ratio of the organic resin to the sericite is 0.2-1:1, and the material ratio of the high-energy ball milling is 5-10: 1.
In the step (1), the other fillers include but are not limited to one or more of iron oxide red, basalt and glass flakes.
In the step (2), the curing agent of the component B comprises amine, ether or anhydride curing agent, and the mass ratio of the component B to the organic resin in the component A is 0.2-0.8: 1.
The general sericite and the surface-organized sericite powder of example 1 were subjected to infrared spectroscopy, and the results are shown in fig. 1. The existence of high-temperature mechanochemistry surface organic sericite powder, methyl or methylene and benzene ring functional groups proves that the sericite and the epoxy resin realize chemical reaction, and the organic modification of the sericite surface is successful.
Fig. 2 is a comparison result of the microscopic surface morphology of common sericite and surface-organized sericite, and the result shows that the surface of the organized sericite is covered with a layer of resin, and the resin does not fall off after being washed for many times by an organic solvent, thereby proving that the organic sericite has good grafting strength.
FIG. 3 shows the macroscopic corrosion morphology of a surface-organized sericite anticorrosive coating added with 10 wt% and a common sericite anticorrosive coating after soaking in 3.5 wt% NaCl solution for 1000 hours. The result shows that the organized sericite anticorrosive coating has more excellent anticorrosive performance.

Claims (6)

1. A preparation method of organic sericite for an anticorrosive coating is characterized by comprising the following steps: the method comprises the following specific steps:
(1) taking organic resin, adding sericite filler into the organic resin, mixing and stirring uniformly, transferring into a grinding tank, carrying out organic treatment by adopting a high-temperature mechanical ball milling method, and centrifuging, filtering, and drying the obtained product to obtain surface organic sericite powder;
(2) and (2) mixing the surface organized mica powder in the step (1) with film forming material resin, additives, diluents and other fillers, mechanically stirring and mixing to obtain a component A, and simultaneously carrying out ultrasonic stirring and mixing on a component B curing agent and the component A to obtain the surface organized mica anticorrosive paint.
2. The method of preparing organic sericite for an anticorrosive coating according to claim 1, wherein: in the step (1), the organic resin includes, but is not limited to, one of epoxy resin, silicone resin and organic fluorine resin.
3. The method of preparing organic sericite for an anticorrosive coating according to claim 1, wherein: in the step (1), the organic modification treatment is that the mixture is subjected to high-energy ball milling for 3-6h at the temperature of 150-220 ℃ and the speed of 400-600 r/min, taken out, repeatedly centrifuged and filtered for three times, and the product is dried in an oven at the temperature of 60 ℃ for 24h to obtain the surface organic sericite powder.
4. The method of preparing organic sericite for an anticorrosive coating according to claim 1, wherein: in the step (1), the mass ratio of the organic resin to the sericite is 0.2-1:1, and the material ratio of the high-energy ball milling is 5-10: 1.
5. The method of preparing organic sericite for an anticorrosive coating according to claim 1, wherein: in the step (1), the other fillers include but are not limited to one or more of iron oxide red, basalt and glass flakes.
6. The method of preparing organic sericite for an anticorrosive coating according to claim 1, wherein: in the step (2), the curing agent of the component B comprises amine, ether or anhydride curing agent, and the mass ratio of the component B to the organic resin in the component A is 0.2-0.8: 1.
CN202010586685.8A 2020-06-24 2020-06-24 Preparation method of organic sericite for anticorrosive coating Pending CN111748230A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114806346A (en) * 2022-04-01 2022-07-29 哈尔滨工程大学 High-temperature mechanochemical modified titanium dioxide anticorrosive coating and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107868565A (en) * 2017-10-20 2018-04-03 安徽快来防水防腐有限公司 A kind of production method of the polyaniline epoxy resin corrosion-inhibiting coating of sericite toughness reinforcing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107868565A (en) * 2017-10-20 2018-04-03 安徽快来防水防腐有限公司 A kind of production method of the polyaniline epoxy resin corrosion-inhibiting coating of sericite toughness reinforcing

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
中国科学技术协会: "《2009-2010颗粒学学科发展报告》", 30 April 2010, 中国科学技术出版社 *
刘晓玲: "高温机械力化学改性氧化铁对环氧涂层防腐性能的影响研究", 《中国博士学位论文全文数据库 工程科技I辑》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114806346A (en) * 2022-04-01 2022-07-29 哈尔滨工程大学 High-temperature mechanochemical modified titanium dioxide anticorrosive coating and preparation method thereof

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