CN109880522A - A kind of super-hydrophobic PRTV(RTV) based composites and preparation method thereof, application method - Google Patents
A kind of super-hydrophobic PRTV(RTV) based composites and preparation method thereof, application method Download PDFInfo
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Abstract
The present invention relates to a kind of super-hydrophobic PRTV (RTV) based composites and preparation method thereof, application method, above-mentioned preparation method includes: S1, prepares hydrophobically modified micro-and nano-particles；S2, mixed solvent is prepared；S3, it prepares super-hydrophobic PRTV (RTV) based composites: the hydrophobically modified micro-and nano-particles prepared in S1 and the mixed solvent prepared in S2 is uniformly mixed stirring, it is sequentially added into polytetrafluoroethylene (PTFE) again, calcium carbonate, acrylic acid modified resin is simultaneously mixed evenly, then it is ground, it is mixed again with PRTV (RTV) glue, after stirring 2~3h, it carries out vacuumizing and defoaming processing and obtains super-hydrophobic PRTV (RTV) based composites, above-mentioned application method are as follows: super-hydrophobic PRTV (RTV) based composites are using spraying, dip-coating, it brushes and the method for curtain coating obtains modifying super hydrophobicity PRTV (RTV) gel coating.The present invention extend insulator service life, wearability be good, hydrophobicity and self-cleaning are strong.
Description
Technical field
The present invention relates to hydrophobic material technical field, more particularly to a kind of super-hydrophobic PRTV (RTV) based composites and
Preparation method, application method.
Background technique
PRTV (RTV) coating is at home and abroad answered as anti-pollution flashover coating due to it with excellent hydrophobicity extensively
With, but the insulator of on-line operation, in the natural environment vulnerable to atmosphere such as sulfur dioxide, nitrogen oxides and graininess dust
The influence of environment makes insulator surface be easier to be stained with ash, and gradually deposited one layer of dunghill in insulator surface.It is dry in weather
In the case where dry, insulator of these surfaces with dunghill keeps higher dielectric level, discharge voltage and clean, drying
It is approached when state, however, PRTV (RTV) coating is since contact angle only has 100 ° or so, roll angle is greater than 10 °, most of droplet
It cannot tumble in time, when meeting the weather such as heavy rain or sleet, insulator surface insulation performance can be deteriorated, and make the electricity in pollution layer
Matter dissolution, ionization are solved, pollution layer surface leakage current is caused to increase, when meeting or exceeding critical value, at this point, electric arc runs through two
Flashover is completed in pole.The insulator service life for being thus coated with PRTV (RTV) coating will be greatly reduced, it is often necessary to which overcoating, this process is not
But the cumbersome and higher overcoating cost of needs.
Summary of the invention
Good, hydrophobicity that the technical problem to be solved in the present invention is to provide a kind of service life, wearabilities for extending insulator
And super-hydrophobic PRTV (RTV) based composites of self-cleaning by force and preparation method thereof, application method.
A kind of super-hydrophobic PRTV (RTV) based composites of the present invention, including following component: hydrophobically modified micro-and nano-particles,
Polytetrafluoroethylene (PTFE), calcium carbonate, acrylic acid modified resin, pentane and ethyl acetate mixed solvent and PRTV (RTV) glue, it is described
Hydrophobically modified micro-and nano-particles include dehydrated alcohol, concentrated nitric acid, glacial acetic acid, deionized water, ethyl orthosilicate, methyl triethoxy
Silane.
Preferably, according to the mass fraction, 5~20 parts of hydrophobically modified micro-and nano-particles, polytetrafluoroethylene (PTFE) 5~15
Part, 1~5 part of calcium carbonate, 0.5~2 part of acrylic acid modified resin, 50-80 parts of pentane, 30-60 parts of ethyl acetate, PRTV
(RTV) 80~150 parts of glue.
It is preferably in any of the above-described scheme, according to the mass fraction, 300~450 parts of the dehydrated alcohol, concentrated nitric acid 1~2
Part, 1~2 part of glacial acetic acid, 50~100 parts of deionized water, 60~100 parts of ethyl orthosilicate, methyltriethoxysilane 80~120
Part.
It is preferably in any of the above-described scheme, the mass fraction of the concentrated nitric acid is 60%~68%, the glacial acetic acid
Mass fraction is 30%-38%.
A kind of preparation method of super-hydrophobic PRTV (RTV) based composites, super-hydrophobic PRTV (RTV) based composites
Using said components, include the following steps:
S1, hydrophobically modified micro-and nano-particles are prepared: concentrated nitric acid is added in dehydrated alcohol, be stirred, and be warming up to 40
~65 DEG C, glacial acetic acid and deionized water are added dropwise immediately, after above-mentioned each component is mixed and at the uniform velocity stirs 2h, is warming up to 65~80
DEG C, micro-and nano-particles are obtained, ethyl orthosilicate, methyltriethoxysilane are sequentially added, after at the uniform velocity stirring 4h, are aged for 24 hours,
Precipitating, drying to obtain hydrophobically modified micro-and nano-particles are collected by centrifugation；
S2, it prepares mixed solvent: pentane and ethyl acetate is mixed evenly.
S3, super-hydrophobic PRTV (RTV) based composites are prepared: will be in the hydrophobically modified micro-and nano-particles and S2 that prepare in S1
The mixed solvent of preparation is uniformly mixed stirring, then is sequentially added into polytetrafluoroethylene (PTFE), calcium carbonate, acrylic acid modified resin and mixes
Conjunction stirs evenly, then mixes with PRTV (RTV) glue, after stirring 2~3h, carries out vacuumizing and defoaming processing and obtains super-hydrophobic PRTV
(RTV) based composites.
Preferably, in step S1, the concentrated nitric acid, glacial acetic acid, deionized water, ethyl orthosilicate, methyl triethoxy
Silane is added dropwise respectively with the speed of 2s/ drop.
It is preferably in any of the above-described scheme, in step S1, the precipitating drying 2h, 120 DEG C of drying temperature.
A kind of application method of super-hydrophobic PRTV (RTV) based composites, super-hydrophobic PRTV (RTV) based composites
It is obtained according to above-mentioned preparation method, super-hydrophobic PRTV (RTV) based composites are using spraying, dip-coating, brushing and curtain coating
Method obtain modifying super hydrophobicity PRTV (RTV) gel coating.
Compared with prior art, it advantage for present invention and has the beneficial effect that
1, hydrophobically modified micro-and nano-particles are prepared by using sol-gal process, organosilan process for modifying surface, had
The features such as reaction temperature is low, the reaction time is short, product is uniform.
2, make hydrophobically modified micro-and nano-particles and PRTV (RTV) cementing conjunction by using nano-filled technology, that is, use third
Olefin(e) acid modified resin and pentane and ethyl acetate mixed solvent, are conducive to hydrophobically modified nanoparticle and PRTV (RTV) glue
Abundant combination, guarantee that hydrophobically modified nanoparticle and PRTV (RTV) glue-line layer permeate, make modifying super hydrophobicity PRTV obtained
(RTV) gel coating all has superhydrophobic characteristic from surface layer to deep layer, and is not merely that surface has superhydrophobic characteristic, and acrylic acid
Modified resin can be improved PRTV (RTV) glue adhesive force in conjunction with modified micro-and nano-particles, and wear-resisting property is good, meanwhile, also make to surpass
Hydrophobically modified PRTV (RTV) gel coating has good levelability, weatherability, guarantees the paint smooth of coating on the insulator,
Make it be not easy to be stained with ash, super-hydrophobic ice-covering-proof performance height, be not easy to be oxidized, guarantee that insulator is persistently such as new, reduce the probability of pollution flashover,
Even if extending the service life of insulator in subzero 20 DEG C still good effects.
3, modifying super hydrophobicity PRTV (RTV) gel coating obtained is environmentally friendly, wear-resisting, preparation process is simple.
With reference to the accompanying drawing to a kind of super-hydrophobic PRTV (RTV) based composites of the invention and preparation method thereof, use
Method is described further.
Detailed description of the invention
Fig. 1 is a kind of flow chart of super-hydrophobic PRTV (RTV) based composites preparation method of the present invention.
Specific embodiment
A kind of super-hydrophobic PRTV (RTV) based composites of the present invention, including following component: hydrophobically modified micro-and nano-particles,
Polytetrafluoroethylene (PTFE), calcium carbonate, acrylic acid modified resin, pentane and ethyl acetate mixed solvent and PRTV (RTV) glue, it is hydrophobic
Modified micro-and nano-particles include dehydrated alcohol, concentrated nitric acid, glacial acetic acid, deionized water, ethyl orthosilicate and methyltriethoxy silane
Alkane.
Wherein, according to the mass fraction, 5~20 parts of hydrophobically modified micro-and nano-particles, 5~15 parts of polytetrafluoroethylene (PTFE), carbonic acid
1~5 part of calcium, 0.5~2 part of acrylic acid modified resin, 50-80 parts of pentane, 30-60 parts of ethyl acetate, PRTV (RTV) glue 80~
150 parts.
According to the mass fraction, 300~450 parts of dehydrated alcohol, 1~2 part of concentrated nitric acid, 1~2 part of glacial acetic acid, deionized water 50
~100 parts, 60~100 parts of ethyl orthosilicate, 80~120 parts of methyltriethoxysilane.The mass fraction of concentrated nitric acid is 60%
~68%, the mass fraction of glacial acetic acid is 30%-38%.
Above-mentioned each component can guarantee that above-mentioned each component sufficiently reacts by using above-mentioned mass fraction, and make carrying out
Solid content after reaction directly reaches 5~6%, meets the standard of required solid content, short form test process and production technology, if not
Using the mass fraction of above-mentioned each component, then it is relatively low or higher to will lead to solid content, when solid content is relatively low, reacts between each component
Not exclusively, super-hydrophobic PRTV (RTV) based composites being prepared are very few；When solid content is higher, what is be prepared is super-hydrophobic
PRTV (RTV) based composites then also need to be diluted using dehydrated alcohol again, so that test process and production technology
It complicates, preparation efficiency is low.
As shown in Figure 1, a kind of preparation method of super-hydrophobic PRTV (RTV) based composites, super-hydrophobic PRTV (RTV) base are multiple
Condensation material uses component as described above, includes the following steps:
S1, hydrophobically modified micro-and nano-particles are prepared: concentrated nitric acid is added in dehydrated alcohol, be stirred, and be warming up to 40
~65 DEG C, glacial acetic acid and deionized water are added dropwise immediately, after above-mentioned each component is mixed and at the uniform velocity stirs 2h, is warming up to 65~80
DEG C, micro-and nano-particles are obtained, ethyl orthosilicate, methyltriethoxysilane are sequentially added, after at the uniform velocity stirring 4h, are aged for 24 hours,
Precipitating, drying to obtain hydrophobically modified micro-and nano-particles are collected by centrifugation；Wherein, concentrated nitric acid, glacial acetic acid, deionized water, positive silicic acid
Ethyl ester, methyltriethoxysilane are added dropwise respectively with the speed of 2s/ drop, are precipitated and are dried 2h, and 120 DEG C of drying temperature.
In step S1, by using the preparation method being gradually warmed up, it is warming up to 40~65 DEG C first, with preheating early period
Effect, can make dehydrated alcohol in nonvolatile situation, guarantee dehydrated alcohol and concentrated nitric acid fully reacting, then it is warming up to 65~
80 DEG C, guarantee that hydrolysis is complete.
By the way that glacial acetic acid is added, glacial acetic acid is able to suppress concentrated nitric acid and ethyl orthosilicate, methyltriethoxysilane are violent
Reaction, causes to react insufficient, and then influences the viscosity and particle structure of hydrophobically modified micro-and nano-particles, so as to cause preparation
Particle does not have ultra-hydrophobicity, and forms waste liquid.
S2, it prepares mixed solvent: pentane and ethyl acetate is mixed evenly.
S3, super-hydrophobic PRTV (RTV) based composites are prepared: will be in the hydrophobically modified micro-and nano-particles and S2 that prepare in S1
The mixed solvent of preparation is uniformly mixed stirring, then is sequentially added into polytetrafluoroethylene (PTFE), calcium carbonate, acrylic acid modified resin and mixes
Conjunction stirs evenly, then mixed with PRTV (RTV) glue, after stirring 2~3h, progress vacuumizing and defoaming processing obtains super-hydrophobic
PRTV (RTV) based composites.
In step S2 and S3, by first preparing mixed solvent, and the hydrophobically modified micro-and nano-particles and S2 that will be prepared in S1
The mixed solvent of middle preparation is uniformly mixed stirring, first acquisition dilution, enables the substance and PRTV (RTV) glue of subsequent addition
It is sufficiently dissolved in dilution and uniformly mixes；According to the hydrophobically modified micro-and nano-particles prepared in S1 directly with subsequent addition
Substance and PRTV (RTV) glue mixing, due to hydrophobically modified micro-and nano-particles obtained be it is powdered, cannot be with PRTV
(RTV) glue directly mixes, and leads to insoluble phenomenon, and it is subsequent add mixed solvent again, be easy to make to be prepared super-hydrophobic
There is particle in PRTV (RTV) based composites, and the flow leveling of super-hydrophobic PRTV (RTV) based composites is poor.
A kind of application method of super-hydrophobic PRTV (RTV) based composites, super-hydrophobic PRTV (RTV) based composites according to
Above-mentioned preparation method obtains, and super-hydrophobic PRTV (RTV) based composites are obtained using the method for spraying, dip-coating, brushing and curtain coating
Modifying super hydrophobicity PRTV (RTV) gel coating.
Embodiment 1
A kind of preparation method of super-hydrophobic PRTV (RTV) based composites, includes the following steps:
S1, hydrophobically modified micro-and nano-particles are prepared: 1.5 parts of concentrated nitric acids are added in 350 parts of dehydrated alcohols, are stirred,
And 40 DEG C are warming up to, 0.5 part of glacial acetic acid and 70 parts of deionized waters are added dropwise immediately, above-mentioned each component is mixed and at the uniform velocity stirs 2h
Afterwards, 65 DEG C are warming up to, micro-and nano-particles are obtained, sequentially adds 100 parts of ethyl orthosilicates, 80 parts of methyltriethoxysilane,
It is still aging that precipitating is collected by centrifugation for 24 hours after stirring 4h, and using oven drying 2h, 120 DEG C of drying temperature change to get to hydrophobic
Property micro-and nano-particles；Wherein, concentrated nitric acid, glacial acetic acid, deionized water, ethyl orthosilicate and methyltriethoxysilane respectively with
The speed of 2s/ drop is added dropwise.
S2, it prepares mixed solvent: 80 parts of pentanes and 40 parts of ethyl acetate is mixed evenly.
S3, super-hydrophobic PRTV (RTV) based composites are prepared: take 10 parts of hydrophobically modified micro-and nano-particles being prepared in S1 with
The mixed solvent prepared in S2 is uniformly mixed stirring, then is sequentially added into 15 parts of polytetrafluoroethylene (PTFE), 3 parts of calcium carbonate, 1 part of propylene
Acid modified resin is simultaneously mixed evenly, and is then ground, then mixes with PRTV (RTV) glue, after stirring 2~3h, is taken out
Vacuum defoamation processing obtains super-hydrophobic PRTV (RTV) based composites.
Super-hydrophobic PRTV (RTV) based composites obtained are obtained super thin using the method for spraying, dip-coating, brushing and curtain coating
Water is modified PRTV (RTV) gel coating, tests by XG-CAM contact angle tester, which is 166.7 °, hydrophobicity
HC1。
Embodiment 2
A kind of preparation method of super-hydrophobic PRTV (RTV) based composites, includes the following steps:
S1, hydrophobically modified micro-and nano-particles are prepared: 1.5 parts of concentrated nitric acids are added in 350 parts of dehydrated alcohols, are stirred,
And 40 DEG C are warming up to, 0.5 part of glacial acetic acid and 70 parts of deionized waters are added dropwise immediately, above-mentioned each component is mixed and at the uniform velocity stirs 2h
Afterwards, 65 DEG C are warming up to, micro-and nano-particles are obtained, sequentially adds 100 parts of ethyl orthosilicates, 80 parts of methyltriethoxysilane,
It is still aging that precipitating is collected by centrifugation for 24 hours after stirring 4h, and using oven drying 2h, 120 DEG C of drying temperature change to get to hydrophobic
Property micro-and nano-particles；Wherein, concentrated nitric acid, glacial acetic acid, deionized water, ethyl orthosilicate and methyltriethoxysilane respectively with
The speed of 2s/ drop is added dropwise.
S2, it prepares mixed solvent: 80 parts of pentanes and 40 parts of ethyl acetate is mixed evenly.
S3, super-hydrophobic PRTV (RTV) based composites are prepared: take 15 parts of hydrophobically modified micro-and nano-particles being prepared in S1 with
The mixed solvent prepared in S2 is uniformly mixed stirring, then is sequentially added into 15 parts of polytetrafluoroethylene (PTFE), 3 parts of calcium carbonate, 1 part of propylene
Acid modified resin is mixed evenly, and is ground, then mixes with 150 parts of PRTV (RTV) glue, after stirring 2~3h, is taken out
Vacuum defoamation processing obtains super-hydrophobic PRTV (RTV) based composites.
Super-hydrophobic PRTV (RTV) based composites obtained are obtained super thin using the method for spraying, dip-coating, brushing and curtain coating
Water is modified PRTV (RTV) gel coating, tests by XG-CAM contact angle tester, which is 168.2 °, hydrophobicity
HC1。
Embodiment 3
A kind of preparation method of super-hydrophobic PRTV (RTV) based composites, includes the following steps:
S1, hydrophobically modified micro-and nano-particles are prepared: 1.5 parts of concentrated nitric acids are added in 350 parts of dehydrated alcohols, are stirred,
And 40 DEG C are warming up to, 0.5 part of glacial acetic acid and 70 parts of deionized waters are added dropwise immediately, above-mentioned each component is mixed and at the uniform velocity stirs 2h
Afterwards, 65 DEG C are warming up to, micro-and nano-particles are obtained, sequentially adds 100 parts of ethyl orthosilicates, 80 parts of methyltriethoxysilane,
It is still aging that precipitating is collected by centrifugation for 24 hours after stirring 4h, and using oven drying 2h, 120 DEG C of drying temperature change to get to hydrophobic
Property micro-and nano-particles；Wherein, concentrated nitric acid, glacial acetic acid, deionized water, ethyl orthosilicate and methyltriethoxysilane respectively with
The speed of 2s/ drop is added dropwise.
S2, it prepares mixed solvent: 80 parts of pentanes and 40 parts of ethyl acetate is mixed evenly.
S3, super-hydrophobic PRTV (RTV) based composites are prepared: take 10 parts of hydrophobically modified micro-and nano-particles being prepared in S1 with
The mixed solvent prepared in S2 is uniformly mixed stirring, then is sequentially added into 12 parts of polytetrafluoroethylene (PTFE), 2 parts of calcium carbonate, 1 part of propylene
Acid modified resin is mixed evenly, and is ground, then mixes with 150 parts of PRTV (RTV) glue, after stirring 2~3h, is taken out
Vacuum defoamation processing obtains super-hydrophobic PRTV (RTV) based composites.
Super-hydrophobic PRTV (RTV) based composites obtained are obtained super thin using the method for spraying, dip-coating, brushing and curtain coating
Water is modified PRTV (RTV) gel coating, tests by XG-CAM contact angle tester, which is 167.2 °, hydrophobicity
HC1。
Embodiment 4
A kind of preparation method of super-hydrophobic PRTV (RTV) based composites, includes the following steps:
S1, hydrophobically modified micro-and nano-particles are prepared: 1.5 parts of concentrated nitric acids are added in 350 parts of dehydrated alcohols, are stirred,
And 40 DEG C are warming up to, 0.5 part of glacial acetic acid and 70 parts of deionized waters are added dropwise immediately, above-mentioned each component is mixed and at the uniform velocity stirs 2h
Afterwards, 65 DEG C are warming up to, micro-and nano-particles are obtained, sequentially adds 100 parts of ethyl orthosilicates, 80 parts of methyltriethoxysilane,
It is still aging that precipitating is collected by centrifugation for 24 hours after stirring 4h, and using oven drying 2h, 120 DEG C of drying temperature change to get to hydrophobic
Property micro-and nano-particles；Wherein, concentrated nitric acid, glacial acetic acid, deionized water, ethyl orthosilicate and methyltriethoxysilane respectively with
The speed of 2s/ drop is added dropwise.
S2, it prepares mixed solvent: 80 parts of pentanes and 40 parts of ethyl acetate is mixed evenly.
S3, super-hydrophobic PRTV (RTV) based composites are prepared: take 14 parts of hydrophobically modified micro-and nano-particles being prepared in S1 with
The mixed solvent prepared in S2 is uniformly mixed stirring, then is sequentially added into 12 parts of polytetrafluoroethylene (PTFE), 2 parts of calcium carbonate, 1 part of propylene
Acid modified resin is mixed evenly, and is ground, then mixes with 150 parts of PRTV (RTV) glue, after stirring 2~3h, is taken out
Vacuum defoamation processing obtains super-hydrophobic PRTV (RTV) based composites.
Super-hydrophobic PRTV (RTV) based composites obtained are obtained super thin using the method for spraying, dip-coating, brushing and curtain coating
Water is modified PRTV (RTV) gel coating, tests by XG-CAM contact angle tester, which is 168.1 °, hydrophobicity
HC1。
It advantage for present invention and has the beneficial effect that
1, it (is hydrolyzed by using sol-gal process, is condensed chemical reaction, form stable vitreosol in the solution
System), organosilan process for modifying surface prepare hydrophobically modified micro-and nano-particles, have reaction temperature is low, the reaction time is short, produce
The features such as product are uniform.
2, make hydrophobically modified micro-and nano-particles and PRTV (RTV) cementing conjunction by using nano-filled technology, that is, use third
Olefin(e) acid modified resin and pentane and ethyl acetate mixed solvent, are conducive to hydrophobically modified nanoparticle and PRTV (RTV) glue
Abundant combination, guarantee that hydrophobically modified nanoparticle and PRTV (RTV) glue-line layer permeate, make modifying super hydrophobicity PRTV obtained
(RTV) gel coating all has superhydrophobic characteristic from surface layer to deep layer, and is not merely that surface has superhydrophobic characteristic, and acrylic acid
Modified resin can be improved PRTV (RTV) glue adhesive force in conjunction with modified micro-and nano-particles, and wear-resisting property is good, meanwhile, also make to surpass
Hydrophobically modified PRTV (RTV) gel coating has good levelability, weatherability, guarantees the paint smooth of coating on the insulator,
Make it be not easy to be stained with ash, super-hydrophobic ice-covering-proof performance height, be not easy to be oxidized, guarantee that insulator is persistently such as new, reduce the probability of pollution flashover,
Even if extending the service life of insulator in subzero 20 DEG C still good effects.
3, modifying super hydrophobicity PRTV (RTV) gel coating obtained is environmentally friendly, wear-resisting, preparation process is simple.
It should be noted that in the case of a conflict, the feature in embodiment and embodiment in the present invention can be mutual
Combination.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (8)
1. a kind of super-hydrophobic PRTV (RTV) based composites, it is characterised in that: including following component: the hydrophobically modified micro-nano grain of rice
Son, polytetrafluoroethylene (PTFE), calcium carbonate, acrylic acid modified resin, pentane and ethyl acetate mixed solvent and PRTV (RTV) glue,
The hydrophobically modified micro-and nano-particles include dehydrated alcohol, concentrated nitric acid, glacial acetic acid, deionized water, ethyl orthosilicate, three second of methyl
Oxysilane.
2. a kind of super-hydrophobic PRTV (RTV) based composites according to claim 1, it is characterised in that: press mass fraction
Meter, it is 5~20 parts of hydrophobically modified micro-and nano-particles, 5~15 parts of polytetrafluoroethylene (PTFE), 1~5 part of calcium carbonate, acrylic acid modified
0.5~2 part of resin, 50-80 parts of pentane, 30-60 parts of ethyl acetate, 80~150 parts of glue of PRTV (RTV).
3. a kind of super-hydrophobic PRTV (RTV) based composites according to claim 1 or 2, it is characterised in that: press mass parts
Number meter, 300~450 parts of the dehydrated alcohol, 1~2 part of concentrated nitric acid, 1~2 part of glacial acetic acid, 50~100 parts of deionized water, positive silicon
60~100 parts of acetoacetic ester, 80~120 parts of methyltriethoxysilane.
4. a kind of super-hydrophobic PRTV (RTV) based composites according to claim 3, it is characterised in that: the concentrated nitric acid
Mass fraction be 60%~68%, the mass fraction of the glacial acetic acid is 30%-38%.
5. a kind of preparation method of super-hydrophobic PRTV (RTV) based composites, it is characterised in that: the super-hydrophobic PRTV (RTV)
Based composites are included the following steps: using the component as described in claim 1-4 any one
S1, hydrophobically modified micro-and nano-particles are prepared: concentrated nitric acid is added in dehydrated alcohol, be stirred, and be warming up to 40~65
DEG C, glacial acetic acid and deionized water are added dropwise immediately, after above-mentioned each component is mixed and at the uniform velocity stirs 2h, is warming up to 65~80 DEG C, obtains
To micro-and nano-particles, ethyl orthosilicate, methyltriethoxysilane are sequentially added, after at the uniform velocity stirring 4h, ageing for 24 hours, is centrifuged
Collect precipitating, drying to obtain hydrophobically modified micro-and nano-particles；
S2, it prepares mixed solvent: pentane and ethyl acetate is mixed evenly；
S3, super-hydrophobic PRTV (RTV) based composites are prepared: will be prepared in the hydrophobically modified micro-and nano-particles and S2 that are prepared in S1
Mixed solvent be uniformly mixed stirring, then be sequentially added into polytetrafluoroethylene (PTFE), calcium carbonate, acrylic acid modified resin and mix stir
It mixes uniformly, then is mixed with PRTV (RTV) glue, after stirring 2~3h, carry out vacuumizing and defoaming processing and obtain super-hydrophobic PRTV
(RTV) based composites.
6. a kind of preparation method of super-hydrophobic PRTV (RTV) based composites according to claim 5, it is characterised in that:
In step S1, the concentrated nitric acid, glacial acetic acid, deionized water, ethyl orthosilicate, methyltriethoxysilane are respectively with 2s/ drop
Speed is added dropwise.
7. a kind of preparation method of super-hydrophobic PRTV (RTV) based composites according to claim 5, it is characterised in that:
In step S1, the precipitating drying 2h, 120 DEG C of drying temperature.
8. a kind of application method of super-hydrophobic PRTV (RTV) based composites, it is characterised in that: the super-hydrophobic PRTV (RTV)
Based composites preparation method according to claim 5-7 any one obtains, and super-hydrophobic PRTV (RTV) base is compound
Material obtains modifying super hydrophobicity PRTV (RTV) gel coating using the method for spraying, dip-coating, brushing and curtain coating.
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