CN109651855A - A kind of fluorided silica nano silicon particles hydrophobing agent and its application - Google Patents
A kind of fluorided silica nano silicon particles hydrophobing agent and its application Download PDFInfo
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- CN109651855A CN109651855A CN201811553902.2A CN201811553902A CN109651855A CN 109651855 A CN109651855 A CN 109651855A CN 201811553902 A CN201811553902 A CN 201811553902A CN 109651855 A CN109651855 A CN 109651855A
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Abstract
The invention discloses a kind of fluorided silica nano silicon particles hydrophobing agent and its application, which is that PFTS group is grafted to SiO using sol-gal process2On nano grain surface, so that original silicone hydroxyl (Si-OH) is fallen in replacement, and then fluorine-containing SiO is made2Nano particle hydrophobing agent, the hydrophobing agent have micrometer/nanometer dual-network structure, and pass through spin coating and cladding process for the fluorination SiO of preparation2Nano particle colloidal sol is coated in certain thickness and is blended on each face of epoxy resin base plate, and preparation method advantage of the present invention is that preparation process simplicity, inexpensive, chemical reaction process are nontoxic, the fluorine-containing SiO that this method obtains2Nano particle hydrophobing agent has extremely low water absorption rate.
Description
Technical field
The invention belongs to high molecular hydrophobic field of material technology more particularly to a kind of fluorided silica nano silicon particles are hydrophobic
Agent and its application.
Background technique
Hydrophobicity be normally defined water its surface contact angle at 90 ° -150 °.In nature, lotus leaf, butterfly wing
Wing and the feather of birds etc. can show hydrophobic phenomenon, these phenomenons are the bases of the theoretical research and exploitation to hydrophobic surface
Plinth.Domestic and foreign scholars are studies have shown that hydrophobicity depends not only on the chemical property (surface energy) of material surface, but also depends on
The morphosis (roughness) of material surface.Due to its waterproof performance, hydrophobic material is in automatically cleaning, surface drag reduction, antifog, anti-corrosion
Equal fields are widely applied.However while material surface becomes hydrophobic, often become lipophilic system, is easy
It is contaminated by oily mutually wetting.Double-hydrophobic surface is hydrophobic and hates the characteristic of oil that material is made to keep stablizing under oil-water coexistence environment,
Show more huge application potential.
Summary of the invention
The purpose of the present invention is in view of the deficiencies of the prior art and defect, provide a kind of fluorided silica nano silicon particles to dredge
Aqua and its application.
In order to achieve the above purpose, the present invention the following technical schemes are provided:
A kind of fluorided silica nano silicon particles hydrophobing agent, using fluorinated silane coupling agent to the monodisperse SiO of synthesis2It receives
Rice grain carries out surface graft modification, and obtaining, there is micrometer/nanometer dual-network structure to be fluorinated SiO2Nano particle hydrophobing agent.
The fluorided silica nano silicon particles hydrophobing agent, preparation method includes the following steps:
(1) ammonium hydroxide is added in suitable ethanol solution by sol-gal process, then ethyl orthosilicate is added dropwise and stirs
Mix is at SiO2Colloidal sol；
(2) as clear SiO2When colloidal sol becomes opaque, silicon fluoride is added into the SiO2A period of time is reacted in colloidal sol,
By the graft modification of silicon fluoride by SiO2The hydroxyl group of sol surface is changed to silicon fluoride group, can be prepared by fluorination SiO2
Nano particle hydrophobing agent.
Specifically, using ethyl alcohol as solvent, ethyl orthosilicate (TEOS) issues unboiled water in ammonia-catalyzed for presoma under constant temperature
It solves polycondensation and forms SiO2Colloidal sol, the ratio between TEOS and ethyl alcohol volume are between 1:10-1:50, process are as follows:
Hydrolyze Si (OC2H5)4+H2O→Si(OH)4+4C2H5OH (1)
Polycondensation Si (OH)4→SiO2+2H2O (2)
Overall reaction Si (OC2H5)4+2H2O→SiO2+4C2H5OH (3)
Specifically, with 1H, 1H, 2H, 2H- perfluoro decyl triethoxysilane (PFTS) are used as modified group, in reaction, because
SiO2Condensation reaction occurs for the silicone hydroxyl (Si-OH) and PFTS of particle surface and quantity is reduced, and this changes particle surface
With the combination degree of water, i.e., the bond densities for generating hydrogen bond with water change.By sol-gal process (sol-gel) by PFTS
Group is grafted to SiO2On nano grain surface, so that original silicone hydroxyl (Si-OH) is fallen in replacement.
The ratio between volume of ammonium hydroxide and ethyl orthosilicate is 8:1 in the hydrophobing agent preparation method.
The modification graft reaction of fluorochemical monomer (PFTS) is to confer to the better power of product in the hydrophobing agent preparation method
Performance and water resistance are learned, wherein the ratio between volume of ethyl orthosilicate and silicon fluoride is 20:1.
The sol-gal process carries out preparation SiO2When colloidal sol, using by Nano-meter SiO_22It is introduced into fluorinated siloxane
In monomer, its combination product is made to have low water absorbable and excellent surface property.
Sol-gal process prepares SiO in the hydrophobing agent preparation method2When colloidal sol, whipping temp 40-100 DEG C it
Between.
Silicon fluoride adds SiO in the hydrophobing agent preparation method2The reaction time is 12-48h in colloidal sol.
It is another object of the present invention to provide a kind of applications of fluorided silica nano silicon particles hydrophobing agent, will be fluorinated
Nano SiO 2 particle hydrophobing agent is used to improve the moisture-proof of epoxy resin.
Epoxy resin includes substrate in the application, and the acquisition of substrate is by cycloaliphatic epoxy resin and E-51 epoxy resin
Blending and modifying is constituted.
By the epoxy resin of blending as polymeric matrix in the described application, be added suitable curing agent and promotor into
Row mold cured can get the polymeric substrates of certain size bulk, then, homemade hydrophobing agent is coated in the polymer matrix
Each face (including all sides) of plate can reduce the blending epoxy resin to the water absorption rate of external environment, to can be improved
The moisture-proof of the blending epoxy resin.
The blending epoxide resin polymer substrate, preparation process the following steps are included:
(1) cycloaliphatic epoxy resin and E-51 epoxy resin are directly mixed in advance using the method for emulsion blending；
(2) using blending epoxy resin is polymeric matrix made from step 1, methyl tetrahydro phthalic anhydride is as curing agent and 2- second
Base -4-methylimidazole as promotor, allowed by way of heating stirring its be uniformly mixed, and pour into Teflon mould into
Row solidification；
(3) the blending epoxy resin bulk after solidifying step 2 demoulds at a certain temperature, flattens, using it as polymerization
Object substrate.
In the preparation that epoxide resin polymer substrate is blended, aliphatic epoxy resin and bisphenol A type epoxy resin (E-
51) mass ratio of mixed emulsion is 8:10.
Pass through spin coating and cladding process in the application for the fluorination SiO of preparation2Nano particle colloidal sol is coated in certain thickness
It is blended on each face of epoxy resin base plate.
One layer of waterproof coating is prepared in this blending epoxy resin surface in the application, and in epoxy resin cure
This waterproofing agent is added and is solidified together.
The process detected to the epoxy resin base plate water absorption rate for being coated with hydrophobing agent is as follows:
By homemade fluorine-containing SiO2Nano particle colloidal sol is as hydrophobing agent, epoxy resin is blended as substrate, in this base
The coarse one side of plate is with the SiO of 3000-5000rpm revolving speed spin coating 100-500ul2Collosol coating, another smooth face, uses sand
Beat it is coarse, then brush one layer of SiO2Colloidal sol also brushes one layer of SiO in four sides of substrate2Colloidal sol, after natural drying, with folder
Sub-folder is regulating in the climatic chamber of temperature and humidity, successively undergo for 24 hours, 48h, 96h, 144h, 168h, every change is primary
Time, will mass metering, be then calculated from the formula water absorption rate, then calculated water absorption rate is contrasted with national standard,
It detects whether up to standard.
Fluorine-containing SiO is coated with by detecting surface layer2The epoxide resin polymer substrate of nano particle hydrophobing agent is in high humility ring
Water absorption rate under border, the detection limit of water absorption rate is up to 1%.
Inventive principle:
By sol-gal process, a kind of fluorine-containing SiO is prepared2Nano particle hydrophobing agent.Firstly, in certain temperature stirring bar
Under part, first ammonium hydroxide is added in suitable ethanol solution, then tetraethyl orthosilicate (TEOS) is added dropwise；Secondly, working as
When clear solution becomes opaque, PFTS is added in mixture, reaction a period of time.Next, waiting reaction knot above
Shu Hou, with spin-coating method by the fluorination SiO of preparation2Nano particle, which is coated to, to be blended on epoxy substrate, then with electric furnace in 60-80 DEG C of item
SiO is removed under part2Superfluous reactant in nanometer particle film.The result shows that: absorption water and Si-OH absorption peak strength are dropped
It is low, this is because SiO2Condensation reaction occurs for the silicone hydroxyl (Si-OH) and PFTS of particle surface and quantity is reduced, and this changes
The combination degree of particle surface and water, i.e., the bond densities for generating hydrogen bond with water change；Simultaneously have also appeared-C-F- and
The vibration absorption peak of C-H shows that PFTS has been grafted to SiO2On nano grain surface.This fluorine-containing SiO2Nano particle is hydrophobic
Agent has following some characteristics: firstly, utilizing the SiO of sol-gal process preparation monodispersity2Nano particle, this grain diameter
It is distributed narrow, average grain diameter 100nm or so.Therefore, it is necessary to this SiO2Nano particle carries out chemical modification, forms fluorination
SiO2Nano particle makes it the well-bedded appearance structure similar with lotus leaf surface occur, to increase its surface roughness.The
Two, it is fluorinated SiO2Nanoparticle coating has micron-sized level-one coarse structure (network pore between microballoon) and nanoscale
Second level coarse structure (the microspike structure of microballoon and microsphere surface), form micron with nanometer and construct the table that combines
Face.Third, the micro-nano dual-network structure of this mountain peak mountain valley shape, is conducive to enriched air, makes water droplet can only be with protrusion
Top and air contact and can not soak the surface of solids.Therefore, using flucride siloxane (PFTS) to monodispersed SiO2It receives
Rice grain carries out chemical modification, forms fluorination SiO2Nano particle not only has dual micro-nano network structure, but also has and dredge
Aqueous energy, is expected to have potential application in terms of the materials such as polymeric matrix.
The invention has the advantages that
1, SiO prepared by the present invention2Colloidal sol is to belong to fluorinated SiO2Nano particle.Wherein, this modified particles coating
Has micron-sized level-one coarse structure (network pore between microballoon) and nanoscale second level coarse structure (microballoon and micro-
The microspike structure of ball surface), micron is formd with nanometer and constructs the surface combined, and such structure belongs to micro-nano double
Weight network structure.
2, this fluorinated SiO2 nano particle colloidal sol, preparation process is simple, low in cost, and the preparation process is related to
The Surface grafting reaction of hydrophobic grouping (- PFTS), while being related to the catalytic effect of ammonium hydroxide, i.e. SiO2The silicone hydroxyl of particle surface
And water (Si-OH) condensation reaction and quantity occurs with PFTS to reduce, and this changes the combination degree of particle surface and water, i.e.,
The bond densities for generating hydrogen bond change, so that PFTS is grafted to SiO2Nano grain surface.
3, preparation process of the present invention uses sol-gal process, simple process, inexpensive, the SiO that this method obtains2It is molten
Glue, structure have micro-nano dual-network structure, show good hydrophobicity in epoxide resin polymer substrate is blended, from
And preferably improve the moisture-proof of epoxy resin.
Detailed description of the invention
Fig. 1 show the patternmaking process that epoxy resin is blended.
Fig. 2 show fluorine-containing SiO2The preparation flow of nano particle hydrophobing agent.
Fig. 3 show fluorine-containing SiO2The topography scan figure (SEM) of nano particle hydrophobing agent, in which: (a), (b) are asphalt mixtures modified by epoxy resin
The front of aliphatic radical body is screwed with 100-500 μ l SiO2The SEM of waterproofing agent schemes, and (c), reverse side that (d) is epoxy resin-base is in waterproof
SEM after being soaked for a period of time in agent, (e), (f) be epoxy resin-base side be soaked for a period of time in waterproofing agent after
SEM。
Fig. 4 show fluorine-containing SiO2The contact angle test data of nano particle hydrophobing agent, in which: (a) is epoxy resin-matrix
The front of body is screwed with 100-500 μ l SiO2The contact angle of waterproofing agent (b) soaks in waterproofing agent for the reverse side of epoxy resin-base
Contact angle after steeping a period of time.
Fig. 5 show fluorine-containing SiO2Nano particle hydrophobing agent is covered by each face of the rectangular epoxy matrix of certain thickness,
And place it in climatic chamber, mass change (a) and its water absorption rate of the sample in moisture absorption process calculate the table figure of (b).
Fig. 6 show fluorine-containing SiO2Nano particle hydrophobing agent is spin-coated to the microscope scanning figure (SEM) on Si substrate.Its
In: (a), (b) be fluorine-containing SiO2Front view, the cross-sectional view of nano particle hydrophobing agent.
Fig. 7 show fluorine-containing SiO2Adhesion strength of the nano particle hydrophobing agent on epoxy matrix surface detects figure.
Specific embodiment
Below in conjunction with specific example, technical scheme is described further:
Embodiment 1
A, the preparation of epoxy resin base plate is blended, comprising the following steps: (1) using the method for emulsion blending in advance by alicyclic ring
Race's epoxy resin and E-51 epoxy resin directly mix, aliphatic epoxy resin and bisphenol A type epoxy resin (E-51) it is mixed
The mass ratio for closing lotion is 8:10；(2) using blending epoxy resin is polymeric matrix made from step 1, methyl tetrahydro phthalic anhydride
As curing agent and 2-ethyl-4-methylimidazole as promotor, it is allowed to be uniformly mixed by way of heating stirring, and pour into
Teflon mould is solidified；(3) the blending epoxy resin bulk after solidifying step 2 demoulds at a certain temperature, pressure
It is flat, using it as polymeric substrates.
B, fluorine-containing SiO2The preparation of nano particle hydrophobing agent: at a constant temperature, using ethyl alcohol as solvent, ethyl orthosilicate (TEOS)
Raw hydrolytie polycondensation, which is issued, in ammonia-catalyzed for presoma forms SiO2Colloidal sol.Firstly, under certain temperature stirring condition, first by hydrogen
Amine-oxides are added in suitable ethanol solution, then tetraethyl orthosilicate (TEOS) is added dropwise；Secondly, when clear solution becomes
When being opaque, the PFTS of 0.1mL is added in mixture, reaction a period of time, reaction terminates to obtain fluorine-containing SiO2Nanometer
Particles hydrophobic agent.
With spin-coating method by the fluorination SiO of preparation2Nano particle, which is coated to, to be blended on epoxy substrate, then with electric furnace in 60-80
SiO is removed under the conditions of DEG C2Superfluous reactant in nanometer particle film.
SiO is coated with by obtained above2The epoxy resin base plate of nano particle colloidal sol, be clipped in clip regulate temperature with
In the climatic chamber of humidity, successively undergo for 24 hours, 48h, 96h, 144h, 168h, the time of every change, will mass metering, so
After be calculated from the formula water absorption rate, then calculated water absorption rate is contrasted with national standard, whether up to standard sees, see attached drawing 5
(a), the water absorption rate of its coating can (b), be clearly observed less than 1%.
Embodiment 2
A, identical with the step A of embodiment 1；
B, fluorine-containing SiO2The preparation of nano particle hydrophobing agent: at a constant temperature, using ethyl alcohol as solvent, ethyl orthosilicate (TEOS)
Raw hydrolytie polycondensation, which is issued, in ammonia-catalyzed for presoma forms SiO2Colloidal sol.Firstly, under certain temperature stirring condition, first by hydrogen
Amine-oxides are added in suitable ethanol solution, then tetraethyl orthosilicate (TEOS) is added dropwise；Secondly, when clear solution becomes
When being opaque, the PFTS of 0.5mL is added in mixture, reaction a period of time, reaction terminates to obtain fluorine-containing SiO2Nanometer
Particles hydrophobic agent.
With spin-coating method by the fluorination SiO of preparation2Nano particle, which is coated to, to be blended on epoxy substrate, then with electric furnace in 60-80
SiO is removed under the conditions of DEG C2Superfluous reactant in nanometer particle film.
SiO is coated with by obtained above2The epoxy resin base plate of nano particle colloidal sol, be clipped in clip regulate temperature with
In the climatic chamber of humidity, by the method in embodiment 1 to the SiO2The water absorption rate of nano particle colloidal sol is calculated, and is inhaled
Water rate is close to embodiment 1.
Embodiment 3
A, identical with the step A of embodiment 1；
B, fluorine-containing SiO2The preparation of nano particle hydrophobing agent: at a constant temperature, using ethyl alcohol as solvent, ethyl orthosilicate (TEOS)
Raw hydrolytie polycondensation, which is issued, in ammonia-catalyzed for presoma forms SiO2Colloidal sol.Firstly, under certain temperature stirring condition, first by hydrogen
Amine-oxides are added in suitable ethanol solution, then tetraethyl orthosilicate (TEOS) is added dropwise；Secondly, when clear solution becomes
When being opaque, the PFTS of 1mL is added in mixture, reaction a period of time, reaction terminates to obtain fluorine-containing SiO2Nanometer
Grain hydrophobing agent.
With spin-coating method by the fluorination SiO of preparation2Nano particle, which is coated to, to be blended on epoxy substrate, then with electric furnace in 60-80
SiO is removed under the conditions of DEG C2Superfluous reactant in nanometer particle film.
SiO is coated with by obtained above2The epoxy resin base plate of nano particle colloidal sol, be clipped in clip regulate temperature with
In the climatic chamber of humidity, its water absorption rate is calculated by the method in embodiment 1, it will be apparent that observes that its water absorption rate is both less than
1%, it is suitable with embodiment 1.
Embodiment 4
A, identical with the step A of embodiment 1；
B, fluorine-containing SiO2The preparation of nano particle hydrophobing agent: at a constant temperature, using ethyl alcohol as solvent, ethyl orthosilicate (TEOS)
Raw hydrolytie polycondensation, which is issued, in ammonia-catalyzed for presoma forms SiO2Colloidal sol.Firstly, under certain temperature stirring condition, first by hydrogen
Amine-oxides are added in suitable ethanol solution, then tetraethyl orthosilicate (TEOS) is added dropwise；Secondly, when clear solution becomes
When being opaque, the PFTS of 2mL is added in mixture, reaction a period of time, reaction terminates to obtain fluorine-containing SiO2Nanometer
Grain hydrophobing agent.
With spin-coating method by the fluorination SiO of preparation2Nano particle, which is coated to, to be blended on epoxy substrate, then with electric furnace in 60-80
SiO is removed under the conditions of DEG C2Superfluous reactant in nanometer particle film.
SiO is coated with by obtained above2The epoxy resin base plate of nano particle colloidal sol, be clipped in clip regulate temperature with
It in the climatic chamber of humidity, is detected by the method in embodiment 1, it will be apparent that observe water absorption rate and the implementation of the hydrophobing agent
Example 1 is suitable.
By adjusting 1H, 1H, 2H in above embodiments, the additional amount of 2H- perfluoro decyl triethoxysilane (PFTS) is obtained
Forerunner's reaction solution of different ratio is obtained, and corresponding silicon dioxide gel is made, just leads to SiO2The shape of micro-nano dual-network structure
At as shown in Figure 3 and Figure 6.
Fig. 1 is the picture being blended after epoxy resin cure.The substrate that this die casting comes out is as polymeric substrates, base
The acquisition of plate is to mix cycloaliphatic epoxy resin with E-51 epoxy resin, it is therefore an objective to is modified to E-51 epoxy resin, purport
The flexibility of E-51 epoxy resin is being improved, and is mitigating its viscosity.
Fig. 2 shows this fluorine-containing SiO2The formation of dual micro-nano structure depends on the grafting with hydrophobic grouping (- PFTS)
Reaction.It can also find out from its hydrolysis condensation reaction process: SiO2The silicone hydroxyl (Si-OH) of particle surface is condensed with PFTS
Reaction, and there is the absorption of vibrations key of-C-F- and C-H, sufficiently prove that-PFTS has been grafted to SiO2On nano grain surface.
Fig. 3 and Fig. 6 is the SiO on different two substrates (epoxy substrate, Si piece)2The scanning (SEM) of nanoparticle coating
Picture, the results showed that SiO2The surface irregularity of nano particle occurs similar with lotus leaf surface well-bedded
Appearance structure increases the roughness on surface.This graft modification grain coating has micron-sized level-one coarse structure (microballoon
Between network pore) and nanoscale second level coarse structure (the microspike structure of microballoon and microsphere surface), form micro-
Rice constructs the surface combined with nanometer.The micro-nano dual-network structure of this mountain peak mountain valley shape, is conducive to enriched air, makes
Water droplet can only contact with protrusion top and air and can not soak the surface of solids.
The test of Fig. 4 contact angle is to prove this fluorine-containing SiO2The wetability of nanoparticle coating.For being fluorinated SiO2Nanometer
Particle, PFTS is in SiO2The graft modification of particle surface makes the multilayer Si-O-Si network structure of particle surface formation nanoscale
With microcosmic layered structure.The micro-nano dual structure that modified particles coating has, increases the roughness on surface, simultaneously because fluorine
Active force is weak between carbon chain molecules, and PFTS has low-down surface energy, makes to be fluorinated SiO2Grain coating is difficult to be soaked by water phase, liquid
Drop can only rest at the summit on coarse material surface without soaking the recess between peak and peak.Fig. 4 (a) is epoxy matrix rotation
Apply the SiO of the side2128 degree of the average contact angle of nanoparticle coating, Fig. 4 (b) are the SiO that epoxy matrix coats the side2It receives
118 degree of the average contact angle of rice grain coating, the coating in this each face shows good hydrophobic performance.
Shown in Fig. 5, Fig. 5 (a) is the quality before and after the moisture absorption of each different circulation time nodes, is found out from data, moisture absorption
Quality afterwards increases slowly, illustrates the waterproof performance for having certain；Fig. 6 (b) is the water absorption rate of each different circulation time nodes,
Calculating is the quality versus with (0h) before moisture absorption, it can be seen that the water absorption rate of different time nodes is both less than 1%.
The present invention also specifically has studied the fluorine-containing SiO on epoxy resin base plate2The adhesion strength of nanoparticle coating is such as schemed
Shown in 7, by the measurement method for drawing grid, it can be seen that the SiO2The adhesion strength of nanoparticle coating belongs to 1 grade, also
After being the scotch tape adhesion for saying 3M, some coatings are not adhered on adhesive tape, illustrate that its coating is not easy to fall off.
The above result shows that fluorine-containing SiO prepared by the present invention2Nano particle colloidal sol is to can be used as a kind of raising epoxy
The hydrophobing agent of resin moisture-proof.
Claims (10)
1. a kind of fluorided silica nano silicon particles hydrophobing agent, which is characterized in that using fluorinated silane coupling agent to the list of synthesis
Disperse SiO2Nano particle carries out surface graft modification, and obtaining, there is hydrophobic micrometer/nanometer dual-network structure to be fluorinated SiO2It receives
Rice grain hydrophobing agent.
2. fluorided silica nano silicon particles hydrophobing agent according to claim 1, which is characterized in that preparation method includes
Following steps:
(1) ammonium hydroxide is added in suitable ethanol solution by sol-gal process, then ethyl orthosilicate stirring is added dropwise and closes
At SiO2Colloidal sol；
(2) as clear SiO2When colloidal sol becomes opaque, silicon fluoride is added into the SiO2A period of time is reacted in colloidal sol, is passed through
The graft modification of silicon fluoride is by SiO2The hydroxyl group of sol surface is changed to silicon fluoride group, can be prepared by fluorination SiO2Nanometer
Particles hydrophobic agent.
3. the preparation method of fluorided silica nano silicon particles hydrophobing agent according to claim 2, which is characterized in that described
The ratio between volume of ammonium hydroxide and ethyl orthosilicate is 8:1.
4. the preparation method of fluorided silica nano silicon particles hydrophobing agent according to claim 2, which is characterized in that described
The ratio between volume of ethyl orthosilicate and silicon fluoride is 20:1.
5. the preparation method of fluorided silica nano silicon particles hydrophobing agent according to claim 2, which is characterized in that described
Sol-gal process prepares SiO2When colloidal sol, whipping temp is between 40-100 DEG C.
6. the preparation method of fluorided silica nano silicon particles hydrophobing agent according to claim 2, which is characterized in that described
Silicon fluoride adds SiO2The reaction time is 12-48h in colloidal sol.
7. a kind of application of fluorided silica nano silicon particles hydrophobing agent, which is characterized in that the fluorinated silica nanometer
Grain hydrophobing agent is used to improve the moisture-proof of epoxy resin.
8. the application of fluorided silica nano silicon particles hydrophobing agent according to claim 7, which is characterized in that the epoxy
Resin includes substrate, and the acquisition of substrate is to constitute cycloaliphatic epoxy resin and E-51 Blending Modification of Epoxy Resin.
9. the application of fluorided silica nano silicon particles hydrophobing agent according to claim 8, which is characterized in that pass through spin coating
With cladding process by the fluorination SiO of preparation2Nano particle colloidal sol is coated in certain thickness and is blended on each face of epoxy resin base plate.
10. the application of fluorided silica nano silicon particles hydrophobing agent according to claim 8, which is characterized in that this
Epoxy resin surface is blended and prepares one layer of waterproof coating, and adds this waterproofing agent together in epoxy resin cure
Solidification.
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| CN114437711B (en) * | 2022-01-07 | 2023-09-29 | 南京航空航天大学 | Long glow powder microshell material for traffic facility driving safety prompt and preparation method thereof |
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