CN109749538A - A kind of preparation method of super-hydrophobic coat and its application in corrosion resistant metal pipe material field - Google Patents
A kind of preparation method of super-hydrophobic coat and its application in corrosion resistant metal pipe material field Download PDFInfo
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- CN109749538A CN109749538A CN201711066889.3A CN201711066889A CN109749538A CN 109749538 A CN109749538 A CN 109749538A CN 201711066889 A CN201711066889 A CN 201711066889A CN 109749538 A CN109749538 A CN 109749538A
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Abstract
The invention discloses a kind of preparation methods of super-hydrophobic coat, its key points of the technical solution are that the following steps are included: S1: silane coupling agent and isopropanol being added in deionized water, the magnetic agitation in 70 DEG C of water-bath adds SiO in the meantime2；S2: whole SiO is added2And then secondary response after the reaction was completed filter and wash the solid of acquisition, is then placed into drying box dry；S3: ball milling is carried out by solid is obtained in S2, is filtered using sieve, and put into compo solution, and add PTFE nanoparticle simultaneously, then carry out magnetic agitation, then carries out ultrasonic disperse, obtain spray coating liquor A；S4: the spray coating liquor A obtained in S3 is sprayed on metallic matrix, after the then heat preservation of spraying, annealing has reached and formed hydrophobic layer in matrix surface, the metal material for being coated with the coating can be allowed to adapt to a variety of severe natural environments.
Description
Technical field
The present invention relates to metal pipe material corrosion-resistant finishes preparation technical field, in particular to a kind of preparation of super-hydrophobic coat
Method and its application in corrosion resistant metal pipe material field.
Background technique
Metal pipe material manufactures skilful with important work in skilful national defense construction in people's lives, industrial and agricultural production.For a long time with
Come, metal pipe material is widely used in modernization construction because at low cost, tough matching is good and strength range is easy to control
All trades and professions and the effect of playing an important role.The own even thread of China's metal pipe material Apparent con- sumption 10 years are in be substantially increased trend.And
In use, the most common problem is exactly to be easy to happen corrosion to metal pipe material, and metal erosion refers to metal material by environment
Medium physically or chemically (especially electrochemistry) acts on and the damage generated or denaturalization phenomenon, is the metal smelt of spontaneous progress
Inverse process, it brings significant damage to the production and construction of personal, collective and country.The every corrosion 1% of metal stress, intensity can decline
About 5%-10%.When two-sided corrosion is up to 5%, metal pipe material structure is scrapped.
With the continuous renewal of aseptic technic research, metal pipe material etching problem is alleviated to a certain extent, but
For the whole world, the etching problem of metal pipe material is still severe.According to statistics, the whole world corrodes the metal scrapped every year and accounts for total output
1/ 4-1/3, the method that existing reduction metal pipe material corrodes in an atmosphere mainly use weathering steel, environmental protection or change office
The measures such as portion's atmospheric environment, cathodic protection, corrosion inhibiter and resistance lure and surface covering protection, although these measures are to a certain extent
Alleviate the etching problem of metal pipe material, the leeway but overall anticorrosion effect is still greatly improved.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of super-hydrophobic coat, play formed in matrix surface it is hydrophobic
Layer, the hydrophobic layer have good corrosion resistance, the metal material for being coated with the coating can be allowed to be adapted to a variety of severe
Natural environment.
Above-mentioned technical purpose of the invention has the technical scheme that a kind of preparation of super-hydrophobic coat
Method, comprising the following steps:
S1: 5-7 parts of silane coupling agents and 10-14 parts of isopropanols are added in 100-120 parts of deionized water, at 70 DEG C
Magnetic agitation 3h in water-bath, adds SiO in the meantime26-10 parts；
S2: whole SiO is added2And then secondary response 30min filter and is carried out to the solid of acquisition after the reaction was completed
Washing 3 times is then placed into 130 DEG C of drying box and continues 10-16 hours；
S3: the solid obtained in S2 is subjected to ball milling and is filtered with the sieve of 150 mesh, and is put into compo solution
In 50-80 parts, and 6-9 parts of PTFE nanoparticles are added simultaneously, and carry out magnetic agitation 30-40min, then carry out ultrasonic disperse
20-40min obtains spray coating liquor A；
S4: spraying the spray coating liquor A obtained in S3 on metallic matrix, and spraying temperature is 220-280 DEG C, then spraying is kept the temperature
After 5-7min, made annealing treatment.
Preferably, compo solution includes PTFE and Xylan coating emulsion.
Preferably, the mass ratio of PTFE coating emulsion and Xylan coating emulsion is 1:1.
Preferably, being added with viscosity modifier in compo solution.
Preferably, viscosity modifier includes NMP.
Preferably, metallic matrix is steel construction.
Preferably, annealing time is 14-18h.
Through the above technical solutions, the design of super-hydrophobic coat can form hydrophobic layer, the hydrophobic layer in metallic surface
With good corrosion resistance, wear-resisting property and high temperature resistance, the metal material for being coated with the coating can be allowed to be adapted to
A variety of severe natural environments.
The purpose of the present invention two: a kind of corrosion resistant metal pipe material, including anti-corrosion layer as described in claim 1.
Preferably, the inner wall and/or outer wall of tubing is arranged in anti-corrosion layer.
Through the above technical solutions, metal pipe material can construct one layer of corrosion resistant table using super-hydrophobic coat of the invention
Layer can maintain the stabilization of metal pipe material when being applied in natural environment for a long time, reduce because caused by corrosion
Tubing intensity losses and leakproofness are deteriorated, and reduce the cost of enterprise maintenance.
In conclusion the invention has the following advantages:
The design of super-hydrophobic coat can allow moisture content to be difficult the superficial residence in tubing, can lead to water because of the reduction of adhesive force
Part is opened from the surface sliding of metal pipe material rapidly, and continuing for the wet environment that corrosion occurs is reduced.
Specific embodiment
Invention is further described in detail below.
In following each embodiments, purchasing of raw materials situation is as follows:
Raw material SiO2The SiO bought using Aladdin reagent Co., Ltd2Nanoparticle (particle diameter distribution is 15 ± 5nm)；PTFE
Nanoparticle (average grain diameter 200nm) is bought from Dongguan City Rui Fu plastic material Co., Ltd；PTFE coating emulsion is purchased from Du Pont
Company；Xylan coating emulsion is purchased from Whitford Corp..
Equipment used in production method
The macro experimental facilities Co., Ltd of Nereid on vacuum oven DZF-6020；
Record wrong weighing calibration equipment Co., Ltd in electronic balance Yuyao；
Ultrapure water preparing instrument Shanghai Hegong Scientific Instrument Co., Ltd.；
Digital display constant temperature blender with magnetic force Hangzhou motor for instrument Co., Ltd；
Ultrasonic cleaner KQ-250E Kunshan Ultrasonic Instruments Co., Ltd..
Embodiment 1, a kind of preparation method of super-hydrophobic coat, comprising the following steps:
S1: 7 parts of silane coupling agents and 14 parts of isopropanols are added in 120 parts of deionized water, in 70 DEG C of water-bath
Magnetic agitation 3h, adds SiO in the meantime210 parts；
S2: whole SiO is added2And then secondary response 30min filter and is carried out to the solid of acquisition after the reaction was completed
Washing 3 times, is then placed into 130 DEG C of drying box and continues 16 hours；
S3: the solid obtained in S2 is subjected to ball milling and is filtered with the sieve of 150 mesh, and is put into compo solution
In, compo solution has specifically included 40 parts and 40 parts of Xylan coating emulsion of PTFE coating emulsion, and adds 9 parts simultaneously
PTFE nanoparticle and viscosity modifier, viscosity modifier includes NMP12 parts, and carries out magnetic agitation 40min, then
It carries out ultrasonic disperse 40min and obtains spray coating liquor A；
S4: spraying the spray coating liquor A obtained in S3 on steel construction, and spraying temperature is 280 DEG C, after the then heat preservation 7min of spraying,
Carry out annealing 18h.
A kind of method for preparing corrosion resistant metal tubing: the inner wall of metal pipe material is applied using above-mentioned S1-S4 step
It covers.
Embodiment 2, a kind of preparation method of super-hydrophobic coat, comprising the following steps:
S1: 5 parts of silane coupling agents and 10 parts of isopropanols are added in 100 parts of deionized water, in 70 DEG C of water-bath
Magnetic agitation 3h, adds SiO in the meantime26 parts；
S2: whole SiO is added2And then secondary response 30min filter and is carried out to the solid of acquisition after the reaction was completed
Washing 3 times, is then placed into 130 DEG C of drying box and continues 10 hours；
S3: the solid obtained in S2 is subjected to ball milling and is filtered with the sieve of 150 mesh, and is put into compo solution
In, compo solution has specifically included 25 parts and 25 parts of Xylan coating emulsion of PTFE coating emulsion, and adds 6 parts simultaneously
PTFE nanoparticle and viscosity modifier, viscosity modifier includes NMP4 parts, and carries out magnetic agitation 30min, then into
Row ultrasonic disperse 20min obtains spray coating liquor A；
S4: spraying the spray coating liquor A obtained in S3 on steel construction, and spraying temperature is 220 DEG C, after the then heat preservation 5min of spraying,
Carry out annealing 14h.
A kind of method for preparing corrosion resistant metal tubing: the outer wall of metal pipe material is applied using above-mentioned S1-S4 step
It covers.
Embodiment 3, a kind of preparation method of super-hydrophobic coat, comprising the following steps:
S1: 6 parts of silane coupling agents and 12 parts of isopropanols are added in 110 parts of deionized water, in 70 DEG C of water-bath
Magnetic agitation 3h, adds SiO in the meantime28 parts；
S2: whole SiO is added2And then secondary response 30min filter and is carried out to the solid of acquisition after the reaction was completed
Washing 3 times, is then placed into 130 DEG C of drying box and continues 13 hours；
S3: the solid obtained in S2 is subjected to ball milling and is filtered with the sieve of 150 mesh, and is put into compo solution
In, compo solution has specifically included 32 parts and 32 parts of Xylan coating emulsion of PTFE coating emulsion, and adds 7.5 parts simultaneously
PTFE nanoparticle and viscosity modifier, viscosity modifier includes NMP8 parts, and carries out magnetic agitation 35min, then into
Row ultrasonic disperse 30min obtains spray coating liquor A；
S4: spraying the spray coating liquor A obtained in S3 on steel construction, and spraying temperature is 250 DEG C, after the then heat preservation 6min of spraying,
Carry out annealing 16h.
A kind of method for preparing corrosion resistant metal tubing: using above-mentioned S1-S4 step to the inner and outer wall of metal pipe material
It is coated.
Comparative example 1, a kind of preparation method of super-hydrophobic coat, comprising the following steps:
S1: 6 parts of silane coupling agents and 12 parts of isopropanols are added in 110 parts of deionized water, in 70 DEG C of water-bath
Magnetic agitation 3h, adds SiO in the meantime28 parts；
S2: whole SiO is added2And then secondary response 30min filter and is carried out to the solid of acquisition after the reaction was completed
Washing 3 times, is then placed into 130 DEG C of drying box and continues 13 hours；
S3: the solid obtained in S2 is subjected to ball milling and is filtered with the sieve of 150 mesh, and is put into compo solution
In, compo solution has specifically included 32 parts and 32 parts of Xylan coating emulsion of PTFE coating emulsion, and adds 7.5 parts simultaneously
PTFE nanoparticle and viscosity modifier, and magnetic agitation 35min is carried out, it then carries out ultrasonic disperse 30min and is sprayed
Liquid A；
S4: spraying the spray coating liquor A obtained in S3 on steel construction, and spraying temperature is 250 DEG C, after the then heat preservation 6min of spraying,
Carry out annealing 16h.
A kind of method for preparing corrosion resistant metal tubing: using above-mentioned S1-S4 step to the inner and outer wall of metal pipe material
It is coated.
Comparative example 2, a kind of preparation method of super-hydrophobic coat, comprising the following steps:
S1: 6 parts of silane coupling agents and 12 parts of isopropanols are added in 110 parts of deionized water, in 70 DEG C of water-bath
Magnetic agitation 3h, adds SiO in the meantime28 parts；
S2: whole SiO is added2And then secondary response 30min filter and is carried out to the solid of acquisition after the reaction was completed
Washing 3 times, is then placed into 130 DEG C of drying box and continues 13 hours；
S3: the solid obtained in S2 is subjected to ball milling and is filtered with the sieve of 150 mesh, and is put into compo solution
In, compo solution has specifically included 64 parts of Xylan coating emulsion, and adds 7.5 parts of PTFE nanoparticles simultaneously and glue
Regulator is spent, viscosity modifier includes NMP8 parts, and carries out magnetic agitation 35min, then carries out ultrasonic disperse 30min acquisition
Spray coating liquor A；
S4: spraying the spray coating liquor A obtained in S3 on steel construction, and spraying temperature is 250 DEG C, after the then heat preservation 6min of spraying,
Carry out annealing 16h.
A kind of method for preparing corrosion resistant metal tubing: using above-mentioned S1-S4 step to the inner and outer wall of metal pipe material
It is coated.
Coating performance test experience
Hydrophobic performance detection: 8 points of the difference of coating surface carry out static contact angle test for each embodiment；
Acid-proof alkaline detection: super-hydrophobic coat is respectively placed in 4.0mol/L hydrochloric acid, 0.6mol/L sodium hydroxide and tap water
Middle immersion 50h；
Coating adhesive strength detection: adhesive force test is surveyed according to the cross cut test of GT/T9286-1998 paint and varnish, paint film
Test-object standard carries out, and 25 μm of coating layer thickness, then cutter tooth spacing is 1mm for choosing；
Coating hardness experiment: GT/T6739-2006 pencil hardness test is being applied using a series of different pencil of pen core hardness
The method of layer surface scratch is come the method that determines coating hardness.
Table 1 is that the indices of super-hydrophobic coat detect.
By the comparison of each embodiment and comparative example in upper table it can be found that the super-hydrophobic coat modulated by embodiment
The minimum requirements of super-hydrophobic coat is fully meet, static contact angle is greater than 150 °, while also having ratio on resistance to acid and alkali
Preferable performance, and when solvent composition variation, all declined as shown in comparative example 2, in alkali resistance and hardness, and
When lacking viscosity modifier, as shown in comparative example 1, adhesive force grade is declined.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (9)
1. a kind of preparation method of super-hydrophobic coat, it is characterised in that: the following steps are included:
S1: 5-7 parts of silane coupling agents and 10-14 parts of isopropanols are added in 100-120 parts of deionized water, at 70 DEG C
Water-bath in magnetic agitation 3h, add SiO in the meantime26-10 parts；
S2: whole SiO is added2And then secondary response 30min filter and is carried out to the solid of acquisition after the reaction was completed
Washing 3 times is then placed into 130 DEG C of drying box and continues 10-16 hours；
S3: the solid obtained in S2 is subjected to ball milling and is filtered with the sieve of 150 mesh, and is put into compo solution
In 50-80 parts, and 6-9 parts of PTFE nanoparticles are added simultaneously, and carry out magnetic agitation 30-40min, then carry out ultrasonic disperse
20-40min obtains spray coating liquor A；
S4: spraying the spray coating liquor A obtained in S3 on metallic matrix, and spraying temperature is 220-280 DEG C, the then heat preservation 5- of spraying
After 7min, made annealing treatment.
2. a kind of preparation method of super-hydrophobic coat according to claim 1, it is characterised in that: compo solution includes
There is PTFE and Xylan coating emulsion.
3. a kind of preparation method of super-hydrophobic coat according to claim 2, it is characterised in that: PTFE coating emulsion and
The mass ratio of Xylan coating emulsion is 1:1.
4. a kind of preparation method of super-hydrophobic coat according to claim 1, it is characterised in that: add in compo solution
Added with viscosity modifier.
5. a kind of preparation method of super-hydrophobic coat according to claim 4, it is characterised in that: viscosity modifier includes
NMP。
6. a kind of preparation method of super-hydrophobic coat according to claim 1, it is characterised in that: metallic matrix is steel knot
Structure.
7. a kind of preparation method of super-hydrophobic coat according to claim 1, it is characterised in that: annealing time 14-
18h。
8. a kind of corrosion resistant metal tubing, it is characterised in that: including anti-corrosion layer as described in claim 1.
9. a kind of corrosion resistant metal tubing according to claim 8, it is characterised in that: anti-corrosion layer is arranged in tubing
Wall and/or outer wall.
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| CN201711066889.3A CN109749538A (en) | 2017-11-02 | 2017-11-02 | A kind of preparation method of super-hydrophobic coat and its application in corrosion resistant metal pipe material field |
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| CN201711066889.3A CN109749538A (en) | 2017-11-02 | 2017-11-02 | A kind of preparation method of super-hydrophobic coat and its application in corrosion resistant metal pipe material field |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113444409A (en) * | 2021-08-20 | 2021-09-28 | 中国民用航空飞行学院 | Titanium alloy surface PTFE-SiO2Preparation method of super-hydrophobic coating |
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| CN105400239A (en) * | 2015-12-18 | 2016-03-16 | 北京航天赛德科技发展有限公司 | Preparation method of modified silicon dioxide obtained via super-hydrophobic modification |
| CN105969177A (en) * | 2016-07-21 | 2016-09-28 | 中国民用航空总局第二研究所 | Coating composition and preparation method and application thereof |
| CN106574173A (en) * | 2014-06-23 | 2017-04-19 | 南方电缆有限责任公司 | UV-resistant superhydrophobic coating compositions |
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2017
- 2017-11-02 CN CN201711066889.3A patent/CN109749538A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103992701A (en) * | 2014-05-23 | 2014-08-20 | 中国人民武装警察部队杭州士官学校 | Method for preparing super hydrophobic polymer composite coating containing nano particles and product thereof |
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| CN106574173A (en) * | 2014-06-23 | 2017-04-19 | 南方电缆有限责任公司 | UV-resistant superhydrophobic coating compositions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113444409A (en) * | 2021-08-20 | 2021-09-28 | 中国民用航空飞行学院 | Titanium alloy surface PTFE-SiO2Preparation method of super-hydrophobic coating |
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