CN109425563A - Apply the laser particle analyzer and preparation method thereof in oil field reinjection water field - Google Patents
Apply the laser particle analyzer and preparation method thereof in oil field reinjection water field Download PDFInfo
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- CN109425563A CN109425563A CN201710735482.9A CN201710735482A CN109425563A CN 109425563 A CN109425563 A CN 109425563A CN 201710735482 A CN201710735482 A CN 201710735482A CN 109425563 A CN109425563 A CN 109425563A
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- 239000002245 particle Substances 0.000 title claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000000725 suspension Substances 0.000 claims abstract description 37
- 239000011521 glass Substances 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000007787 solid Substances 0.000 claims abstract description 19
- 239000003921 oil Substances 0.000 claims abstract description 15
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 9
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 9
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 229910052681 coesite Inorganic materials 0.000 claims description 12
- 229910052906 cristobalite Inorganic materials 0.000 claims description 12
- 239000000377 silicon dioxide Substances 0.000 claims description 12
- 229910052682 stishovite Inorganic materials 0.000 claims description 12
- 229910052905 tridymite Inorganic materials 0.000 claims description 12
- 210000001595 mastoid Anatomy 0.000 claims description 9
- 240000002853 Nelumbo nucifera Species 0.000 claims description 8
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 8
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 8
- 239000002114 nanocomposite Substances 0.000 claims description 5
- 230000002209 hydrophobic effect Effects 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 abstract description 6
- 239000000758 substrate Substances 0.000 abstract description 5
- 238000004506 ultrasonic cleaning Methods 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 description 23
- 238000000576 coating method Methods 0.000 description 23
- 238000004140 cleaning Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000003075 superhydrophobic effect Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002389 environmental scanning electron microscopy Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000005501 phase interface Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
- G01N15/0227—Investigating particle size or size distribution by optical means using imaging; using holography
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The present invention provides a kind of laser particle analyzers of suspended solid particles object on-line checking for oil field reinjection water, including glass sample pond, the inner surface in the glass sample pond is successively coated with suspension and silicon fluoride solution, and the suspension is amino acrylic resin and Nano-meter SiO_22Composite suspension liquid.The present invention also provides a kind of preparation methods of the laser particle analyzer of suspended solid particles object on-line checking for oil field reinjection water.Method provided by the invention is simple and easy, it is not limited by substrate characteristics and shape, it may be directly applied to prepare the surface covering of complex part, it is compared with piezoelectric ceramic wafer ultrasonic cleaning function, utilize the laser particle analyzer sample cell of " double to dredge " surface preparation, it does not need to add additional driving power and control plate, it is small in size, at low cost, improve robustness and reliability.
Description
Technical field
The invention belongs to the suspended solid particles object online measuring technique fields of oil field reinjection water more particularly to one kind to be used for
The laser particle analyzer and preparation method thereof of the suspended solid particles object on-line checking of oil field reinjection water.
Background technique
When laser particle analyzer tests the cleanliness of organic matter at present, usually used sample cell needs to add ultrasonic wave clear
Wash function.Piezoelectric ceramic wafer can be added respectively in both ends on the outside of sample cell, by driving power (including single-chip microcontroller, circuit board,
Transformer, low frequency inductance and high-frequency inductor) and control plate (including low frequency/high-frequency change over switch and power switch, piezoelectric ceramics
The running parameter of piece is set) synergy.The purpose is to reduce the dust being attached on sample cell inner surface, water and greasy dirt etc.
It influences.Since ultrasonic cleaning has unique mechanical effect and fuel factor, there is very strong decomposition discrete capacity to dirt, clearly
It is fast, high-efficient, high-quality to wash speed, cleanliness is uniform, it is easy to accomplish automation.But due to directly using pressure in the equipment
Electroceramics chip, it is easily broken under high-frequency vibration, while to prevent piezoelectric ceramics and wiring from aoxidizing.In addition, it is necessary to every
Cleaning function is run after secondary test.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of suspended solid particles object on-line checkings for oil field reinjection water
Laser particle analyzer and preparation method thereof.
In a first aspect, providing a kind of suspended solid particles object on-line checking for oil field reinjection water in the embodiment of the present invention
Laser particle analyzer, including laser, collimating and beam expanding system, cycles samples system, fourier lense, photodetector and calculating
Machine；The cycles samples system is made of feed system, discharge system and glass sample pond, wherein the glass sample pond
Inner surface is successively coated with suspension and silicon fluoride solution, and the suspension is amino acrylic resin and Nano-meter SiO_22It is compound
Suspension.
Optionally, in some embodiments, the inner surface in the glass sample pond is in the mastoid process structure of class lotus leaf surface, institute
The size for stating mastoid process is 8nm-12nm, and the spacing between the mastoid process is 18nm-22nm.
Optionally, in some embodiments, on the basis of the total weight of the suspension, the Nano-meter SiO_22Content be
13wt%-17wt%.
Optionally, in some embodiments, on the basis of the total weight of the suspension, the Nano-meter SiO_22Content be
15wt%.
Optionally, in some embodiments, the Nano-meter SiO_22Partial size be 10nm.
Optionally, in some embodiments, the collimating and beam expanding system includes a microcobjective system and a space
Filter；The photodetector is semicircle or sector, photosurface and the insulated trenches of the photodetector are interspersed.
Heretofore described photodetector is that a complete semicircle or sector, photosurface interlock with insulated trenches
Distribution.Using photosurface as silicon photoelectric diode, for receiving scattered light signal, the photosurface between ring and ring is with isolation material group
At insulated trenches be separating boundary, the photoelectric conversion signal of each ring individually exports, by computer disposal.
Second aspect, the present invention also provides the preparation methods of laser particle analyzer provided by the present invention, comprising steps of
Suspension is first sprayed on the interior table in glass sample pond using the method for spraying by the inner surface in the glass sample pond of laser particle analyzer
On face, the suspension is using amino acrylic resin as film-forming resin, with suspension made of SiO2 Nanocomposites；Again
Spray a thin layer silicon fluoride solution；Hydrophobic oleophobic surface covering is made.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that method provided by the invention is simple
It is easy, it is not limited by substrate characteristics and shape, may be directly applied to the surface covering for preparing complex part, with piezoelectric ceramics crystalline substance
Piece ultrasonic cleaning function is compared, and is utilized the laser particle analyzer sample cell of " double to dredge " surface preparation, is not needed to add additional drive
Dynamic power supply and control plate, it is small in size, at low cost, improve robustness and reliability.
Detailed description of the invention
Fig. 1 is the laser particle size of the suspended solid particles object on-line checking for oil field reinjection water of one embodiment of the invention
The structural schematic diagram of instrument；
Fig. 2 is the laser particle size of the suspended solid particles object on-line checking for oil field reinjection water of one embodiment of the invention
The inner surface in the glass sample pond of instrument is successively coated with the coating structure schematic diagram of suspension and silicon fluoride solution；
Fig. 3 is addition content 15%SiO2Class lotus leaf coating ESEM figure；
Fig. 4 is addition content 15%SiO2Class lotus leaf coating TEM figure.
Attached drawing mark:
100, the laser particle analyzer for the suspended solid particles object on-line checking of oil field reinjection water, 1, laser, 2, standard
Direct expansion beam system, 3, cycles samples system, 4, fourier lense, 5, photodetector, 6, computer, 7, convergent lens, 8, standard
Straight lens, 9, spatial filter, 10, feed system, 11, discharge system, 12, glass sample pond, 13, the center of photodetector
Position, S1, glass sample pond inner surface, S2, suspension, S3, silicon fluoride solution.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
Description and claims of this specification and term " first ", " second ", " third ", " in above-mentioned attached drawing
The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage
The data that solution uses in this way are interchangeable under appropriate circumstances, so that the embodiments described herein can be in addition to illustrating herein
Or the sequence other than the content of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit
In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce
The other step or units of product or equipment inherently.
As shown in Figure 1, providing a kind of suspended solid particles for oil field reinjection water in specific embodiments of the present invention
The laser particle analyzer 100 of object on-line checking, including laser 1, collimating and beam expanding system 2, cycles samples system 3, fourier lense
4, photodetector 5 and computer 6.Light source of the laser 1 as laser particle analyzer 100, issues a branch of one-wavelength laser, laser beam
Become collimated monochromatic ligth beam by collimating and beam expanding system 2.Then, collimated light beam is by cycles samples system 3, if cycles samples system
It unites 3 inner no scattering particles, then collimated light beam is focused in the focus of fourier lense 4, i.e. the center 13 of photodetector；
If housing sample particle in cycles samples system 3, some collimated light beam is scattered, and fourier lense 4 will scatter light meeting
Gather on its focal plane, i.e., on photodetector 5.What photodetector 5 received is particle scattered energy distribution map, scattering
Luminous energy figure obeys scattering theory, since this distribution map is related with grain diameter, then photodetector 5 will be collected into scattering energy
It is converted into electric signal, electric signal passes through acquisition process, obtains digital picture, handles image by computer 6, inversion algorithm calculates
Obtain size distribution.
In the particular embodiment, heretofore described collimating and beam expanding system 2 includes a microcobjective system (by meeting
Poly- lens 7 and collimation lens 8 are constituted) and a spatial filter 9.When the one-wavelength laser that laser 1 issues passes through convergent lens 7
Afterwards, it is focused into a bit, spatial filter 9 is placed on this aspect, all high-order scattering light can be filtered, pass through space filtering
Device 9 be space low-frequency laser beam, be in divergent beams, using reforming into collimated monochromatic ligth beam after collimation lens 8.
In the particular embodiment, heretofore described cycles samples system 3 is by feed system 10, discharge system 11
It is formed with glass sample pond 12.The suspended solid particles object for oil field reinjection water for being illustrated in figure 2 an embodiment is online
The inner surface S1 in the glass sample pond of the laser particle analyzer of detection is successively coated with the coating of suspension S2 and silicon fluoride solution S 3
Structural schematic diagram, wherein the inner surface S1 in the glass sample pond is successively coated with suspension S2 and silicon fluoride solution S 3, described
Suspension is amino acrylic resin and Nano-meter SiO_22Composite suspension liquid.On the basis of conventional machining process, in hyaloid
Product pond inner surface, will be using amino acrylic resin as film-forming resin, with SiO using the method for spraying2Nanocomposites are made
Suspension be first sprayed on substrate, then spray a thin layer silicon fluoride solution, be made that the transparency is good, binding force is strong and hardness is high
Super-hydrophobic oleophobic surface coating, have automatically cleaning characteristic.Can be original containing part petroleum in oil field reinjection water, detection can be tied
Fruit has a great impact.Laser particle analyzer of the invention is applied in online detection instrument, and is used in abandoned wells underground
, inconvenient detection every time when, all takes out, can not timely cleaning sample pond, the present inventor is by largely studying
Realize discovery, add hydrophobic oleophobic coating on sample cell pool wall so that the laser particle analyzer have self-cleaning function and compared with
Strong contamination resistance, so that laser particle analyzer is advantageously applied to the suspended solid particles object of oil field reinjection water
On-line checking.Preferably, heretofore described photodetector 5 is a complete semicircle or sector, photosurface with it is exhausted
Edge channel is interspersed.Using photosurface as silicon photoelectric diode, for receiving scattered light signal, photosurface between ring and ring with
The insulated trenches of isolation material composition are separating boundary, and the photoelectric conversion signal of each ring is individually exported, handled by computer 6.
Optionally, in some embodiments, the inner surface in the glass sample pond is in the micron order mastoid process of class lotus leaf surface
Structure, the size of the mastoid process are 8nm-12nm, and the spacing between the mastoid process is 18nm-22nm.
Contact angle is defined as: the angle in solid-liquid-gas three phase intersection, between gas liquid film and solid-liquid phase interface.When connecing
At 90 ° of feeler <, the wettable solid of liquid, this surface of solids is referred to as lyophilic surface；When 10 ° of contact angle <, complete wetting claims
This surface of solids is super lyophilic surface；When 90 ° of contact angle >, liquid is not easy to infiltrate solid, this surface of solids is referred to as lyophoby table
Face；When 150 ° of contact angle >, it is difficult to infiltrate, this surface of solids is referred to as super lyophoby surface.
Optionally, in some embodiments, on the basis of the total weight of the suspension, the content of the nanosized SiO_2 is
13wt%-17wt%.
Optionally, in some embodiments, on the basis of the total weight of the suspension, the content of the nanosized SiO_2 is
15wt%.
Preferably, the hydrophobicity of above-mentioned glass sample pond coating on inner surface can by surface to the static contact angle of water come table
Sign.On the basis of the total weight of the suspension, as the SiO of addition 15%wt%2When, the water contact angle of glass baseplate coating is super
150 ° are crossed, is super hydrophobic surface, to introduce Nano-meter SiO_22Rough surface is generated, the hydrophobicity of coating is greatly improved.
Preferably, the oleophobic property of above-mentioned glass sample pond coating on inner surface can be by surface to the static contact angle of edible oil
To characterize.By taking glass baseplate as an example, it is not added with SiO2When, oily contact angle is only 72 °；Using the total weight of the suspension as base
Standard adds the SiO of 15%wt%2When increase to 95 °, reached oleophobic.
Preferably, in visible wavelength range (380~780nm), the transmitance with blank glass is preferably 100% to be
Benchmark, by different Nano-meter SiO_2s2The coating of content is coated on the inner surface of above-mentioned glass sample pond, is not added with or additive amount <
The SiO of 15%wt%2Coating surface transmitance be obviously reduced, but be held at 83% or more, there is the transparency well；With
On the basis of the total weight of the suspension, the SiO of 15%wt% is added2Coating surface transmitance be more than 87%, the transparency most
It is good.
It is illustrated in figure 3 addition content 15%SiO2Class lotus leaf coating ESEM figure.In the particular embodiment, preferably
, work as SiO2When content is 15wt%, there is the micron-similar to lotus leaf surface in above-mentioned glass sample pond coating on inner surface
Nano composite structure makes coating have super-hydrophobic and oleophobic property.Wherein, the scale bar of 2 μm of expression figures in Fig. 3, i.e., are as follows: as schemed
Length shown in 3 is 2 μm.
Preferably, above-mentioned glass sample pond coating on inner surface can be assigned as film forming matter using amino acrylic resin
Higher pencil hardness and stronger adhesive force.It is not added with SiO2When coating pencil hardness there was only 3H.Add SiO2Coating afterwards
Pencil hardness reaches the maximum hardness 6H of the standard, it is seen that Nano-meter SiO_22Particle has remarkable effect to the raising of coating hardness.
Cated adhesive force all reached the highest level 5B of the standard, it is good to illustrate that prepared coating and substrate surface have
Binding force, can satisfy requirement.
It is illustrated in figure 4 on the basis of the total weight of the suspension, adds the class lotus leaf coating TEM of content 15%SiO2
Figure, in the particular embodiment, the primary partial size of the SiO2 of coating surface is about 10nm, is dispersed relatively uniform.50nm table in Fig. 4
The scale bar of diagram, i.e., are as follows: length as shown in Figure 4 is 50nm.
The present invention also provides the preparation methods of laser particle analyzer provided by the present invention, comprising steps of in laser particle size
Suspension is first sprayed on the inner surface in glass sample pond, institute by the inner surface in the glass sample pond of instrument using the method for spraying
Stating suspension is using amino acrylic resin as film-forming resin, with suspension made of SiO2 Nanocomposites；One is sprayed again
Thin layer silicon fluoride solution；Hydrophobic oleophobic surface covering is made.
The embodiment of the present invention has the advantage that laser particle analyzer sample cell preparation method and prior art phase of the invention
Than generated beneficial effect is: method is simple and easy, is not limited by substrate characteristics and shape, may be directly applied to prepare
The surface covering of complex part；Has good self-cleaning function；It compares, utilizes with piezoelectric ceramic wafer ultrasonic cleaning function
The laser particle analyzer sample cell of " double dredge " surface preparation, does not need to add additional driving power and control plate, it is small in size, at
This is low, improves robustness and reliability.In short, reducing equipment cost, stabilization of equipment performance is improved, this method is simple and easy.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
For those of ordinary skill in the art, thought according to an embodiment of the present invention, in specific embodiment and application
There will be changes in range, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (9)
1. a kind of laser particle analyzer of the suspended solid particles object on-line checking for oil field reinjection water, the laser particle analyzer packet
Include laser, collimating and beam expanding system, cycles samples system, fourier lense, photodetector and computer, the cycles samples
System includes feed system, discharge system and glass sample pond, and the inner surface in the glass sample pond is successively coated with suspension
With silicon fluoride solution, the suspension is amino acrylic resin and Nano-meter SiO_22Composite suspension liquid.
2. laser particle analyzer according to claim 1, which is characterized in that the inner surface in the glass sample pond is in class lotus leaf
The mastoid process structure on surface, the size of the mastoid process are 8nm-12nm, and the spacing between the mastoid process is 18nm-22nm.
3. laser particle analyzer according to claim 1, which is characterized in that on the basis of the total weight of the suspension, institute
State Nano-meter SiO_22Content be 13wt%-17wt%.
4. laser particle analyzer according to claim 3, which is characterized in that on the basis of the total weight of the suspension, institute
The content for stating nanosized SiO_2 is 15wt%.
5. laser particle analyzer according to claim 1, which is characterized in that the Nano-meter SiO_22Partial size be 10nm.
6. laser particle analyzer according to claim 1, which is characterized in that the collimating and beam expanding system includes a micro- object
Mirror system and a spatial filter；The photodetector be it is semicircle or fan-shaped, the photosurface of the photodetector with
Insulated trenches are interspersed.
7. a kind of preparation method of laser particle analyzer as claimed in any one of claims 1 to 6, which is characterized in that comprising steps of
The method that inner surface in the glass sample pond of laser particle analyzer uses spraying, suspension is first sprayed in glass sample pond
On surface, the suspension is using amino acrylic resin as film-forming resin, with SiO2Suspension made of Nanocomposites；
A thin layer silicon fluoride solution is sprayed again；Hydrophobic oleophobic surface covering is made.
8. preparation method according to claim 7, which is characterized in that described on the basis of the total weight of the suspension
Nano-meter SiO_22Content be 13wt%-17wt%.
9. preparation method according to claim 8, which is characterized in that described on the basis of the total weight of the suspension
Nano-meter SiO_22Content be 15wt%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112979175A (en) * | 2021-02-07 | 2021-06-18 | 兰州理工大学科技园有限公司 | Hydrophobic and oleophobic coating and preparation method thereof |
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