CN106867398A - A kind of preparation method with self-repair function polysiloxane coating - Google Patents
A kind of preparation method with self-repair function polysiloxane coating Download PDFInfo
- Publication number
- CN106867398A CN106867398A CN201710085992.6A CN201710085992A CN106867398A CN 106867398 A CN106867398 A CN 106867398A CN 201710085992 A CN201710085992 A CN 201710085992A CN 106867398 A CN106867398 A CN 106867398A
- Authority
- CN
- China
- Prior art keywords
- self
- preparation
- repair function
- polysiloxane coating
- coating
- 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.)
- Pending
Links
Classifications
-
- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/28—Nitrogen-containing compounds
-
- 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
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention is to provide a kind of preparation method with self-repair function polysiloxane coating.(1) by polyorganosiloxane fluid and excess Ce (NO3)3·6H2O crystal adds mill pearl after being well mixed in ball grinder, ball-milling treatment is carried out at a temperature of 60 200 DEG C；(2) slurry after ball milling is stood, is leached after after insoluble matter precipitation, obtain filtrate；(3) after filtrate is mixed with curing agent, matrix surface is coated in, obtains the polysiloxane coating with self-repair function.It is preparation process is simple of the present invention, with low cost, it is adaptable to produce in batches.For the self-healing properties for showing coating of image, the technology (LEIS) in the present invention using Local electrochemical impedance spectrum carries out local impedance test, successfully shows the self-repair procedure of damaged coating to pricking empty coating in advance.
Description
Technical field
It is specifically a kind of that there is self-repair function the present invention relates to a kind of preparation method of polysiloxane coating
The preparation method of polysiloxane coating.
Background technology
Coating is a kind of composite with polymer as matrix, because it has light, the excellent mechanics of intensity high-quality
The advantages of performance, good corrosion resistance and excellent insulating properties, is in Aero-Space, communications and transportation, building, electronics, sports
Etc. multiple fields extensive use.However, coating major defect is：This is easily impacted and is caused during processing and use
Damage.Wherein matrix material can make coating produce microdefect due to deforming or colliding in use most serious of all, this
Planting microdefect cannot generally be detected by macroscopic view.So that the matrix at microdefect in working on due to lacking protection
And microcosmic corrosion is caused, and then material integrity is destroyed, and will result in that material is entirely ineffective to bring property loss even people
Member's injures and deaths.Polysiloxanes has excellent heat resistance, weatherability, electrical insulating property, chemical proofing, hydrophobicity and anti-flammability,
And because itself and inorganic filler have excellent compatibility, just be able to can be had by adding specific inorganic filler
Different performance silicone product, therefore be widely used in Aero-Space, electronic apparatus, chemical industry, machinery, communications and transportation, build
Build, weave, the field such as health care.
The content of the invention
It is it is an object of the invention to provide a kind of not only favorable anti-corrosion effect and preparation process is simple, with low cost, it is applicable
In the preparation method with self-repair function polysiloxane coating of batch production.
The object of the present invention is achieved like this：
(1) by polyorganosiloxane fluid and excess Ce (NO3)3·6H2O crystal adds mill pearl after being well mixed in ball grinder,
Ball-milling treatment is carried out at a temperature of 60-200 DEG C；
(2) slurry after ball milling is stood, is leached after after insoluble matter precipitation, obtain filtrate；
(3) after filtrate is mixed with curing agent, matrix surface is coated in, obtains the polysiloxanes with self-repair function and apply
Layer.
The present invention can also include：
1st, polyorganosiloxane fluid and Ce (NO3)3·6H2The mass ratio of O crystal is (100-200)：1.
2nd, drum's speed of rotation is 100-600r/min during ball-milling treatment, and Ball-milling Time is 2-4h.
3rd, in filter process, the screen pack for using is 1000-5000 mesh stainless steel filter screens.
4th, the mass ratio of filtrate and curing agent is 4：1.
The present invention ensures the temperature of grinding in preparation process by heating and heat-insulating device, and by adjusting grinding for ball mill
Rotating speed and milling time is ground to realize modifying process.
The present invention is by adding micro Ce (NO in polyorganosiloxane fluid3)3·6H2O crystal, it is special using Rare-Earth Ce
Outer electronic structure, the organic groups such as hydroxyl, methylol are exposed when micro-crack occurs in polysiloxane coating, by its unoccupied orbital
Formed with strong with polar group, promote polysiloxane molecule to crosslink reaction, tentatively make microcrack healing；And Rare-Earth Ce promotees
Enter parent metal (steel or aluminium) Surface Creation dense oxidation film, further suppress the corrosion of matrix at micro-crack.And Ce
(NO3)3·6H2The addition of O crystal is small, does not result in the decline of polysiloxane coating mechanical property.The painting prepared in the present invention
Layer, not only keeps excellent antiseptic property, and keeps itself and the good compatibility of other inorganic fillers, is follow-up color stuffing
Modified to provide good basis, the engineering to promoting organic anti-corrosive coating applies significant.
Self-healing coatings of the invention are redox reaction coatings according to repair mechanisms.Other are different to review one's lessons by oneself
Overcoating layer such as microcapsules coatings, wick-containing/doughnut coatings etc., the coating of the invention is not only likewise supplied with
Self-repair function, and preparation technology is simpler, it is with low cost.
Brief description of the drawings
Fig. 1 a- Fig. 1 b are pattern change in coating micropore area after micro porous coating soaks 200h in the 3.5%NaCl aqueous solution.
Wherein：Fig. 1 a are micropore area pattern when micro porous coating soaks 50h in the 3.5%NaCl aqueous solution；Fig. 1 b exist for micro porous coating
Micropore area pattern when 200h is soaked in the 3.5%NaCl aqueous solution.
Fig. 2 a- Fig. 2 d are micro porous coating LEIS test results in the 3.5%NaCl aqueous solution.Wherein：Fig. 2 a are applied for micropore
LEIS test result of the layer after immersion 31h in the 3.5%NaCl aqueous solution；Fig. 2 b are micro porous coating in the 3.5%NaCl aqueous solution
LEIS test results after middle immersion 132h；Fig. 2 c are the LEIS after micro porous coating soaks 243h in the 3.5%NaCl aqueous solution
Test result；Fig. 2 d are the LEIS test results after micro porous coating soaks 480h in the 3.5%NaCl aqueous solution；Fig. 3 is addition
0.1%Ce, 0.2%Ce, 0.3%Ce and no added polysiloxane coating soaked more than 3000 hours in 3.5%NaCI solution
Electrochemical impedance low-frequency impedance collection of illustrative plates.
Fig. 3 is addition 0.1%Ce, 0.2%Ce, 0.3%Ce and no added polysiloxane coating in 3.5%NaCI solution
Soak the electrochemical impedance low-frequency impedance collection of illustrative plates more than 3000 hours.
Specific embodiment
Preparation method with self-repair function polysiloxane coating of the invention mainly comprises the following steps：
(1) by polyorganosiloxane fluid and excess Ce (NO3)3·6H2O crystal adds mill pearl after being well mixed in ball grinder,
Ball-milling treatment some hours are carried out at a temperature of 60-200 DEG C；
(2) slurry after ball milling is stood, is leached after after insoluble matter precipitation, obtain filtrate；
(3) after filtrate is mixed with curing agent with certain proportion, matrix surface is coated in, is obtained with self-repair function
Polysiloxane coating.
Polyorganosiloxane fluid and Ce (NO3)3·6H2Mass ratio selection (100-200) of O crystal：1.
The drum's speed of rotation selection 100-600r/min of ball-milling treatment, Ball-milling Time is 2-4h.
Screen pack is 1000-5000 mesh stainless steel filter screens.
The structural formula of the polysiloxanes is,
Wherein：RlFor hydrogen, methyl, ethyl, vinyl, light base, complete base, amino, ketone fat base, methoxy or ethoxy；R2For
Hydrogen, methyl, ethyl, propyl group, vinyl, phenyl, light base, methoxyl group, ethyoxyl, trifluoro propyl, cyano group or epoxy radicals；R3For
Hydrogen, methyl, ethyl, propyl group, vinyl, phenyl, light base, methoxyl group, ethyoxyl, trifluoro propyl, cyano group or epoxy radicals；R4For
Hydrogen, methyl, ethyl, propyl group, vinyl, phenyl, light base, methoxyl group, ethyoxyl, trifluoro propyl, cyano group or epoxy radicals；R5For
Hydrogen, methyl, ethyl, propyl group, vinyl, phenyl, light base, methoxyl group, ethyoxyl, trifluoro propyl, cyano group or epoxy radicals；X and y are equal
It is the positive integer of 0-20, and is asynchronously 0；The molecular weight of the polysiloxanes is 100-10000.
Illustrate below and the present invention is described in more detail：
(1) by 100g polyorganosiloxane fluids and 1gCe (NO3)3·6H2O crystal adds mill after being well mixed in ball grinder
Pearl, is 80 DEG C by ball milling temperature setting, grinds 3h；
(2) slurry after ball milling is taken out and is stood, after after insoluble matter precipitation, filtered with 2000 mesh stainless steel filtering nets, obtained
Filtrate；
(3) by filtrate and curing agent with mass ratio 4：After 1 mixing, 2 line aluminium alloy surfaces are coated in, obtain polysiloxanes painting
Layer；
(4) sample is cut into 1cm*1cm square small pieces, 200 μm or so micropores is pricked in centre, be then attached to fill
LEIS tests are carried out in the container of the 3.5%NaCl aqueous solution.
It is preparation process is simple of the present invention, with low cost, it is adaptable to produce in batches.Reviewing one's lessons by oneself for coating is shown for image
Renaturation energy, the technology (LEIS) in the present invention using Local electrochemical impedance spectrum carries out local impedance survey to pricking empty coating in advance
Examination, successfully shows the self-repair procedure of damaged coating.
Fig. 1 a- Fig. 1 b are pattern change in coating micropore area after micro porous coating soaks 200h in the 3.5%NaCl aqueous solution.
200 hours micropore area patterns of contrast immersion 50 hours and immersion, here it is apparent that micropore area reduces, and micropore healing state is good
It is good.
With reference to Fig. 2 a- Fig. 2 d micro porous coatings LEIS test results in the 3.5%NaCl aqueous solution.It can be seen that with immersion
Time lengthening, micropore area impedance magnitude gradually increases, and description defect coating heals with the extension of time, shows to become better and better
Antiseptic property.
Fig. 3 is addition 0.1%Ce, 0.2%Ce, 0.3%Ce and no added polysiloxane coating in 3.5%NaCI solution
Soak the electrochemical impedance low-frequency impedance collection of illustrative plates more than 3000 hours.As seen from the figure, in soak time was more than 3000 hours,
The low-frequency impedance modulus value of 4 kinds of composition coatings is all higher than 109, illustrate that corrosion resistance is good.And 4 kinds of composition coatings are all over time
Increase, rise after falling before, finally tend towards stability.In stability region, the polysiloxane coating low frequency resistance of 0.3%Ce salt is with the addition of
Anti- modulus value highest, illustrates that Rare-Earth Ce salt addition is higher, and coating corrosion resistance is better.
Claims (9)
1. a kind of preparation method with self-repair function polysiloxane coating, it is characterized in that：
(1) by polyorganosiloxane fluid and excess Ce (NO3)3·6H2O crystal adds mill pearl after being well mixed in ball grinder,
Ball-milling treatment is carried out at a temperature of 60-200 DEG C；
(2) slurry after ball milling is stood, is leached after after insoluble matter precipitation, obtain filtrate；
(3) after filtrate is mixed with curing agent, matrix surface is coated in, obtains the polysiloxane coating with self-repair function.
2. the preparation method with self-repair function polysiloxane coating according to claim 1, it is characterized in that：Poly- silica
Alkane liquid and Ce (NO3)3·6H2The mass ratio of O crystal is (100-200)：1.
3. the preparation method with self-repair function polysiloxane coating according to claim 1 and 2, it is characterized in that：Ball
Drum's speed of rotation is 100-600r/min during mill treatment, and Ball-milling Time is 2-4h.
4. the preparation method with self-repair function polysiloxane coating according to claim 1 and 2, it is characterized in that：Cross
During filter, the screen pack for using is 1000-5000 mesh stainless steel filter screens.
5. the preparation method with self-repair function polysiloxane coating according to claim 3, it is characterized in that：It is filtered
Cheng Zhong, the screen pack for using is 1000-5000 mesh stainless steel filter screens.
6. the preparation method with self-repair function polysiloxane coating according to claim 1 and 2, it is characterized in that：Filter
Liquid is 4 with the mass ratio of curing agent：1.
7. the preparation method with self-repair function polysiloxane coating according to claim 3, it is characterized in that：Filtrate with
The mass ratio of curing agent is 4：1.
8. the preparation method with self-repair function polysiloxane coating according to claim 4, it is characterized in that：Filtrate with
The mass ratio of curing agent is 4：1.
9. the preparation method with self-repair function polysiloxane coating according to claim 5, it is characterized in that：Filtrate with
The mass ratio of curing agent is 4：1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710085992.6A CN106867398A (en) | 2017-02-17 | 2017-02-17 | A kind of preparation method with self-repair function polysiloxane coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710085992.6A CN106867398A (en) | 2017-02-17 | 2017-02-17 | A kind of preparation method with self-repair function polysiloxane coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106867398A true CN106867398A (en) | 2017-06-20 |
Family
ID=59166608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710085992.6A Pending CN106867398A (en) | 2017-02-17 | 2017-02-17 | A kind of preparation method with self-repair function polysiloxane coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106867398A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101098984A (en) * | 2004-11-10 | 2008-01-02 | 凯密特尔有限责任公司 | Method for coating metallic surfaces with an aqueous composition |
| CN101781510A (en) * | 2010-02-03 | 2010-07-21 | 海洋王照明科技股份有限公司 | Bicomponent epoxy resin coating and preparation method thereof |
| CN102174289A (en) * | 2011-02-25 | 2011-09-07 | 上海交通大学 | Surface anti-corrosion sol for aeronautic aluminum alloy material and treatment method thereof |
| CN104592890A (en) * | 2014-12-24 | 2015-05-06 | 中国特种飞行器研究所 | Polysiloxane paint with corrosion restoration function and preparation method thereof |
-
2017
- 2017-02-17 CN CN201710085992.6A patent/CN106867398A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101098984A (en) * | 2004-11-10 | 2008-01-02 | 凯密特尔有限责任公司 | Method for coating metallic surfaces with an aqueous composition |
| CN101781510A (en) * | 2010-02-03 | 2010-07-21 | 海洋王照明科技股份有限公司 | Bicomponent epoxy resin coating and preparation method thereof |
| CN102174289A (en) * | 2011-02-25 | 2011-09-07 | 上海交通大学 | Surface anti-corrosion sol for aeronautic aluminum alloy material and treatment method thereof |
| CN104592890A (en) * | 2014-12-24 | 2015-05-06 | 中国特种飞行器研究所 | Polysiloxane paint with corrosion restoration function and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Haddadi et al. | Self-healing epoxy nanocomposite coatings based on dual-encapsulation of nano-carbon hollow spheres with film-forming resin and curing agent | |
| CN104685002B (en) | Conductive composition and the electric conductivity formed body for using the conductive composition | |
| CN107858825B (en) | A kind of graphene-based superhydrophobic fabric and preparation method thereof | |
| Zhao et al. | Electrodeposited superhydrophobic mesoporous silica films co-embedded with template and corrosion inhibitor for active corrosion protection | |
| CN110054965B (en) | Modified graphene oxide co-cured waterborne epoxy resin coating and preparation method thereof | |
| CN107418277B (en) | A kind of water nano long-effective corrosion finishing coat and preparation method thereof | |
| Sushmitha et al. | Material conservation and surface coating enhancement with starch-pectin biopolymer blend: A way towards green | |
| Xue et al. | Corrosion protective properties of silane functionalized graphene oxide film on AA2024-T3 aluminum alloy | |
| Hlushko et al. | Hydrophobic antioxidant polymers for corrosion protection of an aluminum alloy | |
| CN105647338A (en) | Graphene/epoxy resin composite anticorrosive paint with high isolation and preparation method | |
| Koochaki et al. | Facile strategy toward the development of a self-healing coating by electrospray method | |
| CN108504281A (en) | A kind of stabilization can repair the preparation method of zinc oxide/polysiloxanes super-hydrophobic coat | |
| Arukalam et al. | Exploitation of natural gum exudates as green fillers in self-healing corrosion-resistant epoxy coatings | |
| CN107500561A (en) | High transparency, super lubrication, from glass coating of additional properties and its preparation method and application | |
| CN110669361A (en) | Preparation method of water-based coated aluminum pigment | |
| Wang et al. | Feasible fabrication of durable superhydrophobic SiO2 coatings with translucency and self-cleaning performance | |
| CN106867398A (en) | A kind of preparation method with self-repair function polysiloxane coating | |
| Nuryawan et al. | Swelling behaviour of cured urea–formaldehyde resin adhesives with different formaldehyde to urea mole ratios | |
| CN110527481A (en) | A kind of oil-resistant high-temperature silicone sealant and preparation method thereof | |
| CN110872465B (en) | Graphene insulating coating and preparation method and application thereof | |
| CN107323020A (en) | A kind of silastic polymer weatherability leather and preparation method thereof | |
| CN111171667A (en) | Preparation method of nano anticorrosive paint | |
| CN108659675A (en) | A kind of preparation method of the Long-effect corrosion-resistant wave transparent coating of graphene modification silicon nitride | |
| CN102690441A (en) | Resin fiber, plugging agent for petroleum drilling and processing technology of plugging agent | |
| Njoku et al. | Epoxy-based bi-layer self-repairing coating with anti-corrosive functionalities for the protection of A2024 aluminum alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170620 |