CN116444990A - Hydrophobic silicone rubber and preparation method thereof, atomizer and electronic atomization device - Google Patents
Hydrophobic silicone rubber and preparation method thereof, atomizer and electronic atomization device Download PDFInfo
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- CN116444990A CN116444990A CN202210019494.2A CN202210019494A CN116444990A CN 116444990 A CN116444990 A CN 116444990A CN 202210019494 A CN202210019494 A CN 202210019494A CN 116444990 A CN116444990 A CN 116444990A
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- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 176
- 239000004945 silicone rubber Substances 0.000 title claims abstract description 167
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000000889 atomisation Methods 0.000 title abstract description 12
- -1 polysiloxane Polymers 0.000 claims abstract description 58
- 239000000945 filler Substances 0.000 claims abstract description 56
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 26
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 37
- 229910052739 hydrogen Inorganic materials 0.000 claims description 37
- 239000001257 hydrogen Substances 0.000 claims description 37
- 239000012744 reinforcing agent Substances 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 28
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- 239000003054 catalyst Substances 0.000 claims description 26
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 20
- 238000004132 cross linking Methods 0.000 claims description 17
- 239000002683 reaction inhibitor Substances 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 238000004513 sizing Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 13
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- 239000006229 carbon black Substances 0.000 claims description 6
- 229910052697 platinum Inorganic materials 0.000 claims description 6
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- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- 239000002105 nanoparticle Substances 0.000 claims description 5
- 229920002050 silicone resin Polymers 0.000 claims description 5
- 238000004073 vulcanization Methods 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
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- 238000010438 heat treatment Methods 0.000 description 4
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- QYLFHLNFIHBCPR-UHFFFAOYSA-N 1-ethynylcyclohexan-1-ol Chemical compound C#CC1(O)CCCCC1 QYLFHLNFIHBCPR-UHFFFAOYSA-N 0.000 description 3
- JQZGUQIEPRIDMR-UHFFFAOYSA-N 3-methylbut-1-yn-1-ol Chemical compound CC(C)C#CO JQZGUQIEPRIDMR-UHFFFAOYSA-N 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
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- 238000000053 physical method Methods 0.000 description 2
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- 241000196324 Embryophyta Species 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004944 Liquid Silicone Rubber Substances 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 244000246386 Mentha pulegium Species 0.000 description 1
- 235000016257 Mentha pulegium Nutrition 0.000 description 1
- 235000004357 Mentha x piperita Nutrition 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- 244000290333 Vanilla fragrans Species 0.000 description 1
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- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical group FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
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- 238000009832 plasma treatment Methods 0.000 description 1
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- 230000003746 surface roughness Effects 0.000 description 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/10—Devices using liquid inhalable precursors
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/90—Arrangements or methods specially adapted for charging batteries thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/16—Solid spheres
- C08K7/18—Solid spheres inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application provides hydrophobic silicon rubber, a preparation method thereof, an atomizer and an electronic atomization device. The hydrophobic silicone rubber comprises the following materials in parts by mass: 100 parts of polysiloxane and 50-200 parts of hydrophobic filler; wherein the hydrophobic filler is dispersed in the polysiloxane. The surface layer and the inner layer of the hydrophobic silicone rubber have good hydrophobic performance, can effectively fill the blank that the hydrophobic silicone rubber is used in special environments of extrusion, friction and soaking for a long time, and greatly increases the application range of the hydrophobic silicone.
Description
Technical Field
The invention relates to the technical field of polymer material processing, in particular to hydrophobic silicone rubber, a preparation method thereof, an atomizer and an electronic atomization device.
Background
Silicone rubber is a polymer elastomer with both organic and inorganic properties, and because of its unique structure and composition, silicone rubber has hydrophobic properties, and the contact angle of ordinary silicone rubber to water is about 110 °, which obviously cannot meet certain special use conditions.
The prior art methods for improving the hydrophobicity of silicone rubber are generally classified into chemical methods and physical methods. The chemical method mainly adopts plasma treatment, surface grafting, chemical etching and other methods to introduce fluorine-containing groups with good hydrophobic performance on the surface of the silicone rubber, so as to reduce the surface energy of the silicone rubber and improve the hydrophobic performance of the surface of the silicone rubber. For example Gao Songhua et al, the surface of a silicone rubber is treated by CF4 radio frequency plasma to form a large number of silicon fluoro groups and a small number of fluorocarbon groups, which raise the contact angle of the silicone rubber to 150.2 ° with respect to water to improve the hydrophobic property. However, the method has the disadvantages of complex equipment and process and high cost. The physical method is to change the roughness of the surface of the silicon rubber by adopting photoetching, strong oxidation etching and other methods, thereby improving the hydrophobicity of the silicon rubber. For example Zhou Rui et al, by designing the surface structure of the mold, the surface roughness and morphology of the silicone rubber are adjusted so that the surface of the silicone rubber forms a specific roughness, and the contact angle of the surface to water reaches 153.6 °. However, the method uses the mold surface to adhere quartz sand, so that the size and structure of the mold are limited.
The more complex the surface structure of the existing silicone rubber part is, the more difficult the processing is; and if the surface of the treated silicone rubber is damaged or corroded, the hydrophobicity is reduced. Therefore, the applicability of silicone rubber is limited.
Disclosure of Invention
The hydrophobic silicon rubber, the preparation method thereof, the atomizer and the electronic atomization device can solve the problem that the hydrophobic performance is reduced if the surface of the existing silicon rubber is damaged or corroded; hydrophobic silicone rubber is generally only applied to an environment with a non-contact surface, and cannot exhibit the problem of wide applicability of silicone rubber.
In order to solve the technical problems, a first technical scheme adopted by the application is as follows: a hydrophobic silicone rubber is provided. The hydrophobic silicone rubber comprises the following materials in parts by mass: 100 parts of polysiloxane and 50-200 parts of hydrophobic filler; wherein the hydrophobic filler is dispersed in the polysiloxane.
Wherein, the material of the hydrophobic silicon rubber also comprises 10-50 parts of hydrophobic reinforcing agent; the hydrophobic reinforcing agent adheres to the hydrophobic filler.
Wherein the polysiloxane is one of methyl vinyl polysiloxane containing two or more vinyl groups and methyl phenyl vinyl polysiloxane.
Wherein the hydrophobic filler is one or more of spherical alumina, polytetrafluoroethylene powder, diatomite, zinc oxide, glass powder, glass fiber and methyl silicone resin micropowder.
Wherein the hydrophobic filler is micron-sized particles.
Wherein the particle size of the micron-sized particles is 2-75 μm.
Wherein the hydrophobic reinforcing agent is nano-scale particles.
Wherein the hydrophobic reinforcing agent is precipitated hydrophobic white carbon black or gas phase hydrophobic white carbon black.
Wherein the breaking strength of the hydrophobic silicone rubber is more than or equal to 3000Kpa; the elongation of the hydrophobic silicone rubber is more than or equal to 200%; the contact angle of the hydrophobic silicone rubber and water is more than or equal to 150 degrees.
In order to solve the technical problems, a second technical scheme adopted by the application is as follows: a hydrophobic silicone rubber is provided. The hydrophobic silicone rubber comprises the following raw material components in parts by mass: 100 parts of polysiloxane, 2-50 parts of hydrogen-containing silicone oil, 0.1-3 parts of crosslinking catalyst, 0.1-3 parts of reaction inhibitor and 50-200 parts of hydrophobic filler.
Wherein the mass fraction of active hydrogen in the hydrogen-containing silicone oil is 0.07% -1.55%.
Wherein the crosslinking catalyst is a platinum catalyst; and/or the reaction inhibitor is one or more of ethynyl cyclohexanol, methylbutynol, and vinyl ring.
Wherein, the raw material components of the hydrophobic silicone rubber further comprise, by mass: 10-50 parts of a hydrophobic reinforcing agent; the raw material components of the hydrophobic silicone rubber consist of 100 parts of polysiloxane, 10-50 parts of hydrophobic reinforcing agent, 2-50 parts of hydrogen-containing silicone oil, 0.1-3 parts of crosslinking catalyst, 0.1-3 parts of reaction inhibitor and 50-200 parts of hydrophobic filler.
In order to solve the technical problem, a third technical scheme adopted in the application is as follows: a preparation method of hydrophobic silicone rubber is provided. The method comprises the following steps: uniformly mixing 100 parts of polysiloxane, 2-50 parts of hydrogen-containing silicone oil and 50-200 parts of hydrophobic filler to obtain base adhesive; and adding 0.1-3 parts of cross-linking catalyst and 0.1-3 parts of reaction inhibitor into the base rubber, and carrying out vulcanization reaction to obtain the hydrophobic silicone rubber.
Wherein, 100 parts of polysiloxane, 2-50 parts of hydrogen-containing silicone oil and 50-200 parts of hydrophobic filler are uniformly mixed to obtain the base adhesive, which comprises the following steps: and adding a hydrophobic reinforcing agent in the mixing process, wherein the weight part of the hydrophobic reinforcing agent is 10-50 parts.
Wherein, 100 parts of polysiloxane, 2-50 parts of hydrogen-containing silicone oil and 50-200 parts of hydrophobic filler are uniformly mixed to obtain the base adhesive, which comprises the following steps: mixing 100 parts of polysiloxane and 10-50 parts of hydrophobic reinforcing agent for 3-5 hours at 110-130 ℃ by using a kneader; adding 2-50 parts by mass of hydrogen-containing silicone oil into the mixed sizing material to obtain a mixed sizing material; and uniformly mixing 50-200 parts of hydrophobic filler subjected to hydrophobic treatment with the mixed sizing material to obtain the base sizing material.
Wherein the mass fraction of active hydrogen in the hydrogen-containing silicone oil is 0.07% -1.55%; the crosslinking catalyst is a platinum catalyst; the reaction inhibitor is one or more of ethynyl cyclohexyl alcohol, methyl butynol and vinyl ring.
In order to solve the technical problem, a fourth technical scheme adopted in the application is as follows: an atomizer is provided. The atomizer comprises a sealing element, wherein the sealing element is made of the hydrophobic silicone rubber.
In order to solve the technical problems, a fifth technical scheme adopted in the application is as follows: an electronic atomizing device is provided. The electronic atomizing device comprises the atomizer.
The embodiment of the application provides hydrophobic silicone rubber, a preparation method thereof, an atomizer and an electronic atomization device. The hydrophobic silicone rubber comprises the following materials in parts by mass: 100 parts of polysiloxane and 50-200 parts of hydrophobic filler; wherein the hydrophobic filler is dispersed in the polysiloxane. The hydrophobic silicone rubber is characterized in that the hydrophobic filler is introduced and uniformly dispersed in a silicone rubber system, so that specific micro-nano structures are formed on the surface and the inside of the hydrophobic silicone rubber, and the surface layer and the inner layer of the hydrophobic silicone rubber have good hydrophobic performance, and are not limited to the surface of the hydrophobic silicone rubber, so that the hydrophobic silicone rubber has hydrophobic performance; and the surface structure of the hydrophobic silicone rubber is changed, such as breakage or corrosion, so that the hydrophobic silicone rubber still has good hydrophobic property, the blank that the hydrophobic silicone rubber is used in special environments of extrusion, friction and soaking for a long time can be effectively filled, and the application range of the hydrophobic silicone is greatly increased.
Drawings
FIG. 1a is a schematic structural diagram of a sealing gasket prepared from the modified hydrophobic silicone rubber of example 1;
FIG. 1b is a photograph of a sealing gasket made from the modified hydrophobic silicone rubber of example 1;
FIG. 2 is a flow chart of a method for preparing hydrophobic silicone rubber according to an embodiment of the present application;
FIG. 3 is a photograph of the modified hydrophobic silicone rubber of example 1;
FIG. 4 is an optical photograph showing the contact angle of the modified hydrophobic silicone rubber of example 1 with water;
FIG. 5 is a Scanning Electron Microscope (SEM) image of a section of the modified hydrophobic silicone rubber of example 1;
FIG. 6 is an optical photograph of the contact angle of the unmodified hydrophobic silicone rubber of the comparative example with water;
fig. 7 is a schematic diagram of an electronic atomization device according to an embodiment of the present application.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The terms "first," "second," "third," and the like in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Because the prior art is mainly limited to the surface of the material, the more complicated the silicone rubber part is, the more difficult the treatment is; and if the surface of the treated silicone rubber is damaged or corroded, the hydrophobicity is reduced. Therefore, the conventional hydrophobic treated silicone rubber is generally only applied to an environment with a non-contact surface, and cannot exert wide applicability of the silicone rubber.
The embodiment of the application provides the hydrophobic silicone rubber, which not only maintains the excellent physical characteristics of elasticity, strength and the like of the silicone rubber, but also forms a specific micro-nano structure on the surface and the inside of the hydrophobic silicone rubber, so that the surface layer and the inside of the hydrophobic silicone rubber have good hydrophobic performance, and are not limited to the surface of the hydrophobic silicone rubber, and have hydrophobic performance; and the surface structure of the hydrophobic silicone rubber is changed, such as breakage or corrosion, so that the hydrophobic silicone rubber still has good hydrophobic property, the blank that the hydrophobic silicone rubber is used in special environments of extrusion, friction and soaking for a long time can be effectively filled, and the application range of the hydrophobic silicone is greatly increased.
The present application is described in detail below with reference to the accompanying drawings and examples.
In this embodiment, a hydrophobic silicone rubber is provided, and the hydrophobic silicone rubber comprises 100 parts of polysiloxane and 50-200 parts of hydrophobic filler by mass. Wherein the polysiloxane is one of methyl vinyl polysiloxane containing two or more vinyl groups and methyl phenyl vinyl polysiloxane.
The hydrophobic filler is dispersed in polysiloxane and structurally forms a mastoid structure so as to improve the roughness of the contact surface of the hydrophobic silicone rubber and further realize a good hydrophobic effect. The hydrophobic silicone rubber is introduced with the hydrophobic filler, and the hydrophobic filler is uniformly dispersed in a polysiloxane silicone rubber system, so that not only the excellent physical characteristics of the silicone rubber such as elasticity and strength are maintained, but also specific micro-nano structures are formed on the surface and the inside of the hydrophobic silicone rubber, so that the surface layer and the inside of the hydrophobic silicone rubber have better hydrophobic performance, and the hydrophobic silicone rubber is not limited to the surface of the hydrophobic silicone rubber and has hydrophobic performance; and the surface structure of the hydrophobic silicone rubber is changed, such as breakage or corrosion, so that the hydrophobic silicone rubber still has good hydrophobic property, the blank that the hydrophobic silicone rubber is used in special environments of extrusion, friction and soaking for a long time can be effectively filled, and the application range of the hydrophobic silicone is greatly increased.
Specifically, the hydrophobic filler is one or more of spherical alumina, polytetrafluoroethylene powder, diatomite, zinc oxide, glass powder, glass fiber and methyl silicone resin micropowder. The hydrophobic filler is micron-sized particles, so that the hydrophobic effect of the hydrophobic silicone rubber can be further improved. Specifically, the micron-sized particles may have a particle size of 2 μm to 75 μm.
In one embodiment, the hydrophobic silicone rubber further comprises 10-50 parts of a hydrophobic reinforcing agent; the hydrophobic reinforcing agent is adhered to the mastoid structure on the hydrophobic filler and dispersed in the silicone silica gel system together with the hydrophobic filler to further enhance the hydrophobic effect of the hydrophobic silicone rubber. Specifically, the hydrophobic reinforcing agent is nano-sized particles so as to improve the reinforcing effect of the hydrophobic reinforcing agent. In a specific embodiment, the hydrophobic reinforcing agent is precipitated or gas phase hydrophobic white carbon black.
Specifically, the hydrophobic silicone rubber is prepared from 100 parts of polysiloxane, 50-200 parts of hydrophobic filler and 10-50 parts of hydrophobic reinforcing agent; wherein, 50-200 parts of hydrophobic filler and 10-50 parts of hydrophobic reinforcing agent are uniformly dispersed in 100 parts of polysiloxane.
The hydrophobic silicone rubber provided by the embodiment not only utilizes the micro-nano structure formed by the hydrophobic filler after hydrophobic modification to improve the roughness of the contact surface of the silicone rubber so as to play a good hydrophobic role; and the hydrophobic reinforcing agent is further introduced to adhere to the mastoid structure formed by the hydrophobic filler, so that the hydrophobic effect of the hydrophobic silicone rubber is further improved. The breaking strength of the hydrophobic silicon rubber can reach 3000Kpa, the elongation is more than 200 percent, and the contact angle with water reaches 150 degrees; can effectively fill the blank that the high-hydrophobicity silicone rubber is used in special environments of extrusion, friction and soaking for a long time.
In an application scenario, referring to FIGS. 1a-1b, FIG. 1a is a schematic structural diagram of a sealing gasket prepared from the modified hydrophobic silicone rubber of example 1; FIG. 1b is a photograph of a sealing gasket made from the modified hydrophobic silicone rubber of example 1. The hydrophobic silicone rubber can be used as a sealing material in special environments where the hydrophobic silicone rubber is extruded, rubbed and soaked for a long time. For example, in the use of an electronic atomizer, the hydrophobic silicone rubber may enhance corrosion resistance to a liquid aerosol-generating substrate; meanwhile, as the hydrophobic silicone rubber has ultrahigh hydrophobic property, liquid leakage can be reduced. Thus, in an electronic atomizer, the hydrophobic silicone rubber can be designed to be used as a sealing gasket for excellent ventilation by designing the air passage structure of the surface of the electronic atomizer, and the sealing gasket of the hydrophobic silicone rubber has a through hole 12 for the flow of liquid or gas. The aerosol-generating substrate may be oils or medicinal liquids containing aroma components.
The hydrophobic silicone rubber comprises the following raw material components in parts by mass: 100 parts of polysiloxane, 2-50 parts of hydrogen-containing silicone oil, 0.1-3 parts of crosslinking catalyst, 0.1-3 parts of reaction inhibitor and 50-200 parts of hydrophobic filler. In order to further improve the hydrophobic performance of the hydrophobic silicone rubber, the hydrophobic silicone rubber further comprises the following raw material components in parts by mass: 10-50 parts of a hydrophobic reinforcing agent. In the embodiment, the raw material components of the hydrophobic silicone rubber specifically comprise 100 parts of polysiloxane, 10-50 parts of hydrophobic reinforcing agent, 2-50 parts of hydrogen-containing silicone oil, 0.1-3 parts of crosslinking catalyst, 0.1-3 parts of reaction inhibitor and 50-200 parts of hydrophobic filler.
Wherein, 100 parts of polysiloxane, 10-50 parts of hydrophobic reinforcing agent and 50-200 parts of hydrophobic filler are described in the above, and are not repeated here. The mass fraction of active hydrogen in the hydrogen-containing silicone oil is 0.07% -1.55%. The crosslinking catalyst is a platinum catalyst; and/or the reaction inhibitor is one or more of ethynyl cyclohexanol, methylbutynol, and vinyl ring.
In specific embodiments, the above-described hydrophobic silicone rubber may be prepared by the following preparation method of the hydrophobic silicone rubber.
In this embodiment, referring to fig. 2, fig. 2 is a flowchart of a preparation method of hydrophobic silicone rubber according to an embodiment of the present application; a method for preparing hydrophobic silicone rubber is provided, the method comprising:
step S1: 100 parts of polysiloxane, 2-50 parts of hydrogen-containing silicone oil and 50-200 parts of hydrophobic filler are uniformly mixed to obtain the base adhesive.
In a specific embodiment, in the process of mixing 100 parts of polysiloxane, 2-50 parts of hydrogen-containing silicone oil and 50-200 parts of hydrophobic filler, 10-50 parts of hydrophobic reinforcing agent is further added to further improve the hydrophobic property of the hydrophobic silicone rubber obtained subsequently. In this embodiment, step S1 specifically includes:
step S11: 100 parts of polysiloxane and 10-50 parts of hydrophobic reinforcing agent are mixed for 3-5 hours at 110-130 ℃ by using a kneader.
Of course, the low molecular weight can be further removed under vacuum at 140-160 ℃ for 1-2h. Wherein the polysiloxane is one of methyl vinyl polysiloxane containing two or more vinyl groups and methyl phenyl vinyl polysiloxane. The hydrophobic reinforcing agent is nano-sized particles so as to improve the reinforcing effect of the hydrophobic reinforcing agent. In a specific embodiment, the hydrophobic reinforcing agent is precipitated or gas phase hydrophobic white carbon black.
Step S12: and adding 2-50 parts by mass of hydrogen-containing silicone oil into the mixed sizing material to obtain the mixed sizing material.
Wherein the mass fraction of active hydrogen in the hydrogen-containing silicone oil is 0.07% -1.55%. The amount of active hydrogen is 1.5-3 times that of vinyl. In the specific implementation process, 2-50 parts by mass of hydrogen-containing silicone oil is added, and then the mixture is ground for 15-30min by a three-roller grinder to obtain the mixed sizing material.
Step S13: and uniformly mixing 50-200 parts of hydrophobic filler subjected to hydrophobic treatment with the mixed sizing material to obtain the base sizing material.
Wherein the hydrophobic filler is one or more of spherical alumina, polytetrafluoroethylene powder, diatomite, zinc oxide, glass powder, glass fiber and methyl silicone resin micropowder. The hydrophobic filler is micron-sized particles, so that the hydrophobic effect of the hydrophobic silicone rubber can be further improved. Specifically, the micron-sized particles may have a particle size of 2 μm to 75 μm.
In a specific implementation process, the hydrophobic filler is subjected to hydrophobic treatment. Specifically, 5% -10% of organopolysiloxane, silazane or trimethoxy silane is added into the hydrophobic filler, then the mixture is reacted for 2-6 hours at the temperature of 100-200 ℃, and then the residual liquid is evaporated to dryness, so that the hydrophobic filler with hydrophobicity is obtained. After the hydrophobic filler is subjected to hydrophobic treatment, 50-200 parts by mass of the hydrophobic filler subjected to hydrophobic modification is added into the mixed sizing material and fully and uniformly mixed to obtain the base sizing material.
Step S2: adding 0.1-3 parts of cross-linking catalyst and 0.1-3 parts of reaction inhibitor into the base rubber, and carrying out vulcanization reaction to obtain the hydrophobic silicone rubber.
Specifically, adding 0.1-3 parts of a crosslinking catalyst and 0.1-3 parts of a reaction inhibitor into a base rubber, quickly and uniformly mixing, transferring the mixed rubber into a mold by adopting an injection molding and extrusion molding method, vulcanizing for 20-120 min at the temperature of 110-120 ℃, and demolding to obtain molded hydrophobic silicone rubber; wherein, the vulcanization and molding process after the 0.1-3 parts of the crosslinking catalyst and the 0.1-3 parts of the reaction inhibitor are added into the base rubber and are quickly and uniformly mixed can be referred to the existing vulcanization and molding process for the silicone rubber, and the same or similar technical effects can be realized, and the description thereof is omitted.
Wherein the crosslinking catalyst is a platinum catalyst; and/or the reaction inhibitor is one or more of ethynyl cyclohexanol, methylbutynol, and vinyl ring.
According to the preparation method of the hydrophobic silicone rubber, the addition type liquid silicone rubber is used as a matrix material, and the hydrophobic fillers and the hydrophobic reinforcing agents with different types and different particle sizes are added, so that the excellent physical characteristics of the silicone rubber such as elasticity and strength are maintained, and the specific micro-nano structure is formed on the surface and the inside of the hydrophobic silicone rubber, so that the surface layer and the inside of the hydrophobic silicone rubber have good hydrophobic performance, and the hydrophobic silicone rubber is not limited to the surface of the hydrophobic silicone rubber; and the surface structure of the hydrophobic silicone rubber is changed, such as breakage or corrosion, so that the hydrophobic silicone rubber still has good hydrophobic property, the blank that the hydrophobic silicone rubber is used in special environments of extrusion, friction and soaking for a long time can be effectively filled, and the application range of the hydrophobic silicone is greatly increased. Meanwhile, compared with the hydrophobic silicon rubber obtained by traditional hydrophobic modification, the preparation method is simple in preparation process and low in cost; the prepared hydrophobic silicone rubber has the advantages of good hydrophobicity, no limitation of using conditions, secondary processing, high temperature resistance, aging resistance and the like according to different fillers; meanwhile, the excellent hydrophobicity of the material can be kept under special environments of long-term extrusion, friction and soaking.
Specific examples of the preparation method of the hydrophobic silicone rubber are as follows:
example 1:
100g of vinyl polysiloxane (vinyl content 0.006mol/100 g) and 30g of fumed silica are mixed for 3 hours by a kneader and reduced, and 33g of hydrogen-containing silicone oil (hydrogen content 0.036mol/100 g) are added and mixed uniformly. 70g of spherical Al 2 O 3 Adding 7g hexamethyldisilazane into the powder (40 μm), reacting at 120deg.C for 4 hr, heating to 150deg.C, evaporating the residual liquid to dryness to obtain hydrophobic Al 2 O 3 And (5) powder. 70g of hydrophobic Al 2 O 3 The powder, 10g PTFE powder (2 μm) and colloid are mixed uniformly, 0.2g gPt catalyst and 0.2g vinyl ring are added, and after being fully mixed, the mixture is transferred into a 2mm thick die and vulcanized for 1h at 120 ℃ to obtain the hydrophobic silicone rubber sample. Wherein, the structure of the modified hydrophobic silicone rubber of example 1 can be seen in fig. 3, and fig. 3 is a photograph of the modified hydrophobic silicone rubber of example 1; example 1 the contact angle of the modified hydrophobic silicone rubber with water can be seen in fig. 4, and fig. 4 is an optical photograph of the contact angle of the modified hydrophobic silicone rubber of example 1 with water. Example 1A Scanning Electron Microscope (SEM) image of the modified hydrophobic Silicone rubber section can be seen in FIG. 5, FIG. 5 is a scanning electron display of the modified hydrophobic Silicone rubber section of example 1Micromirror (SEM) image. As can be seen from fig. 5, the modified hydrophobic silicone rubber of example 1 forms a specific micro-nano structure on the surface and inside of the silicone rubber; and the micron-sized filler is introduced to form a mastoid structure on the structure, and the nano-sized filler is attached to the mastoid structure. As can be seen from a comparison of fig. 4 and 6, the hydrophobic silicone rubber modified in example 1 has significantly improved hydrophobicity.
Example 2:
100g of vinyl polysiloxane (vinyl content 0.006mol/100 g) and 30g of fumed silica are mixed for 3 hours by a kneader and reduced, and 33g of hydrogen-containing silicone oil (hydrogen content 0.036mol/100 g) are added and mixed uniformly. 10g of hexamethyldisilazane was added to 100g of the fine methylsilicone powder (20 μm) and reacted at 120℃for 4 hours, followed by heating to 150℃and evaporating the remaining liquid to dryness to obtain a fine hydrophobic methylsilicone powder. 100g of hydrophobic methyl silicone resin micropowder, 10g of PTFE powder (2 mu m) and colloid are uniformly mixed, 0.2g of gPt catalyst and 0.2g of vinyl ring are added, and after being fully mixed, the mixture is transferred into a 2mm thick mold and vulcanized for 1h at 120 ℃ to obtain a hydrophobic silicone rubber sample.
Comparative examples:
100g of vinyl polysiloxane (vinyl content 0.006mol/100 g) and 30g of fumed silica are mixed for 3 hours by a kneader and reduced, and 33g of hydrogen-containing silicone oil (hydrogen content 0.036mol/100 g) are added and mixed uniformly. After adding 0.2g gPt catalyst and 0.2g vinyl ring, the mixture was transferred to a 2mm thick mold and vulcanized at 120℃for 1 hour to obtain a silicone rubber sample. Wherein, the contact angle of the unmodified hydrophobic silicone rubber of the comparative example with water can be seen in fig. 6, and fig. 6 is an optical photograph of the contact angle of the unmodified hydrophobic silicone rubber of the comparative example with water. As can be seen from a comparison of fig. 4, the contact angle of the modified hydrophobic silicone rubber of example 1 with water is significantly greater than the contact angle of the unmodified hydrophobic silicone rubber of comparative example with water.
The physical properties of the materials prepared in the above examples are shown in Table 1.
Table 1 shows the physical properties of the materials obtained in example 1, example 2 and comparative example
As can be seen from Table 1, the hydrophobic silicone rubber prepared by the preparation method of the hydrophobic silicone rubber provided by the embodiment of the application has a breaking strength of about 3000Kpa, an elongation of more than 200%, a contact angle with water of 150 degrees and an elasticity of about 50; compared with unmodified hydrophobic silicone rubber, the silicone rubber not only maintains the excellent characteristics of strength, elasticity and the like of the silicone rubber, but also greatly improves the hydrophobic effect of the hydrophobic silicone rubber.
Referring to fig. 7, fig. 7 is a schematic diagram of an electronic atomization device according to an embodiment of the present application. The present application further provides an electronic atomizing device for heating and atomizing an aerosol-generating substrate to form an aerosol for inhalation by a user when energized. Wherein the aerosol-generating substrate may comprise one or more of powders, granules, shreds, strips or flakes of one or more plant leaves such as vanilla leaves, tea leaves, peppermint leaves, etc.; alternatively, the solid matrix may contain additional volatile flavour compounds to be released when the matrix is heated. Of course, the aerosol-generating substrate may also be a liquid substrate, such as oils with aroma components added thereto, liquid medicines, and the like.
The electronic atomization device comprises an atomizer 11 and a power supply assembly 12 connected with the atomizer 11; wherein the atomizer 11 is for heating and atomizing an aerosol-generating substrate to form an aerosol when energized; the power supply assembly 12 is connected to the atomizer 11 for supplying power to the atomizer 11. The power supply assembly 12 may be, in particular, a lithium ion battery.
The atomizer 11 comprises a seal 111, the structure of the seal 111 being particularly seen in fig. 1a. The material of the sealing member 111 is hydrophobic silicone rubber as mentioned above, and the sealing member 111 can be specifically prepared by adopting the preparation method of the hydrophobic silicone rubber, so that the corrosion resistance of the sealing member 111 to the liquid aerosol generating substrate is enhanced on one hand; on the other hand, the sealability of the atomizer 11 is improved. In an embodiment, the atomizer 11 is formed with a liquid inlet channel and/or an air flow channel, and the hydrophobic silicone rubber has ultra-high hydrophobic property, so that leakage of liquid can be reduced, and the sealing member 111 may be disposed on the liquid inlet channel and/or the air flow channel of the atomizer 11 to seal the liquid inlet channel and/or the air flow channel. The electronic atomization device and other structures and functions of the atomizer 11 are the same as or similar to those of the existing electronic atomization device, and the same or similar technical effects can be achieved, and the details of the electronic atomization device and the other structures and functions of the atomizer 11 can be seen in the prior art, and are not described herein.
The foregoing is only the embodiments of the present application, and not the patent scope of the present application is limited by the foregoing description, but all equivalent structures or equivalent processes using the contents of the present application and the accompanying drawings, or directly or indirectly applied to other related technical fields, which are included in the patent protection scope of the present application.
Claims (19)
1. The hydrophobic silicone rubber is characterized by comprising the following materials in parts by mass: 100 parts of polysiloxane and 50-200 parts of hydrophobic filler; wherein the hydrophobic filler is dispersed in the polysiloxane.
2. The hydrophobic silicone rubber according to claim 1, wherein the hydrophobic silicone rubber material further comprises 10-50 parts of a hydrophobic reinforcing agent; the hydrophobic reinforcing agent adheres to the hydrophobic filler.
3. The hydrophobic silicone rubber according to claim 1 or 2, wherein the polysiloxane is one of methyl vinyl polysiloxane containing two or more vinyl groups, and methyl phenyl vinyl polysiloxane.
4. The hydrophobic silicone rubber according to claim 1 or 2, wherein the hydrophobic filler is one or more of spherical alumina, polytetrafluoroethylene powder, diatomaceous earth, zinc oxide, glass powder, glass fiber, and methyl silicone resin micropowder.
5. The hydrophobic silicone rubber according to claim 1 or 2, characterized in that the hydrophobic filler is a micron-sized particle.
6. The hydrophobic silicone rubber according to claim 5, wherein the micron-sized particles have a particle size of 2 μm to 75 μm.
7. The hydrophobic silicone rubber according to claim 2, wherein the hydrophobic reinforcing agent is a nano-sized particle.
8. The hydrophobic silicone rubber according to claim 7, wherein the hydrophobic reinforcing agent is a precipitated hydrophobic white carbon black or a vapor phase hydrophobic white carbon black.
9. The hydrophobic silicone rubber according to claim 2, wherein the breaking strength of the hydrophobic silicone rubber is 3000Kpa or more; the elongation of the hydrophobic silicone rubber is more than or equal to 200%; the contact angle of the hydrophobic silicone rubber and water is more than or equal to 150 degrees.
10. The hydrophobic silicone rubber is characterized by comprising the following raw material components in parts by mass: 100 parts of polysiloxane, 2-50 parts of hydrogen-containing silicone oil, 0.1-3 parts of crosslinking catalyst, 0.1-3 parts of reaction inhibitor and 50-200 parts of hydrophobic filler.
11. The hydrophobic silicone rubber according to claim 10, wherein the mass fraction of active hydrogen in the hydrogen-containing silicone oil is 0.07% to 1.55%.
12. The hydrophobic silicone rubber according to claim 10, wherein the crosslinking catalyst is a platinum catalyst; and/or
The reaction inhibitor is one or more of ethynyl cyclohexyl alcohol, methyl butynol and vinyl ring.
13. The hydrophobic silicone rubber according to any one of claims 10 to 12, characterized in that the raw material components of the hydrophobic silicone rubber further comprise, in parts by mass: 10-50 parts of a hydrophobic reinforcing agent;
the raw material components of the hydrophobic silicone rubber consist of 100 parts of polysiloxane, 10-50 parts of hydrophobic reinforcing agent, 2-50 parts of hydrogen-containing silicone oil, 0.1-3 parts of crosslinking catalyst, 0.1-3 parts of reaction inhibitor and 50-200 parts of hydrophobic filler.
14. A method for preparing hydrophobic silicone rubber, comprising the steps of:
uniformly mixing 100 parts of polysiloxane, 2-50 parts of hydrogen-containing silicone oil and 50-200 parts of hydrophobic filler to obtain base adhesive;
and adding 0.1-3 parts of cross-linking catalyst and 0.1-3 parts of reaction inhibitor into the base rubber, and carrying out vulcanization reaction to obtain the hydrophobic silicone rubber.
15. The method for preparing hydrophobic silicone rubber according to claim 14, wherein the step of uniformly mixing 100 parts of polysiloxane, 2-50 parts of hydrogen-containing silicone oil and 50-200 parts of hydrophobic filler to obtain the base rubber comprises:
and adding a hydrophobic reinforcing agent in the mixing process, wherein the weight part of the hydrophobic reinforcing agent is 10-50 parts.
16. The method for preparing hydrophobic silicone rubber according to claim 15, wherein the step of uniformly mixing 100 parts of polysiloxane, 2-50 parts of hydrogen-containing silicone oil and 50-200 parts of hydrophobic filler to obtain the base rubber comprises:
mixing 100 parts of polysiloxane and 10-50 parts of hydrophobic reinforcing agent for 3-5 hours at 110-130 ℃ by using a kneader;
adding 2-50 parts by mass of hydrogen-containing silicone oil into the mixed sizing material to obtain a mixed sizing material;
and uniformly mixing 50-200 parts of hydrophobic filler subjected to hydrophobic treatment with the mixed sizing material to obtain the base sizing material.
17. The preparation method of the hydrophobic silicone rubber according to claim 14, wherein the mass fraction of active hydrogen in the hydrogen-containing silicone oil is 0.07% -1.55%;
the crosslinking catalyst is a platinum catalyst;
the reaction inhibitor is one or more of ethynyl cyclohexyl alcohol, methyl butynol and vinyl ring.
18. A nebulizer comprising a seal made of the hydrophobic silicone rubber according to any one of claims 1-13.
19. An electronic atomizing device comprising the atomizer of claim 18.
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| CN202210019494.2A CN116444990A (en) | 2022-01-08 | 2022-01-08 | Hydrophobic silicone rubber and preparation method thereof, atomizer and electronic atomization device |
| PCT/CN2022/129348 WO2023130822A1 (en) | 2022-01-08 | 2022-11-02 | Hydrophobic silicone rubber, preparation method therefor, atomizer, and electronic atomization device |
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| CN202210019494.2A CN116444990A (en) | 2022-01-08 | 2022-01-08 | Hydrophobic silicone rubber and preparation method thereof, atomizer and electronic atomization device |
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| CN103965641B (en) * | 2013-02-01 | 2017-02-08 | 常州化学研究所 | Preparation method of addition type heatproof liquid silicone rubber composition |
| CN104448374A (en) * | 2014-12-03 | 2015-03-25 | 南昌航空大学 | Preparation method of super-hydrophobic surface of room temperature vulcanized silicone rubber |
| TW201742893A (en) * | 2016-06-13 | 2017-12-16 | Maxmold Polymer Co Ltd | Silicone wiper material and method for preparing silicone wiper capable of releasing silicone oil to reduce the bounce of wiper blades and prevent the wipers from being worn out and causing poor visibility |
| CN107619656A (en) * | 2017-09-14 | 2018-01-23 | 佛山市天宝利硅工程科技有限公司 | A kind of method for packing of organic silicon rubber adhesive and electric-device housing |
| CN109330028B (en) * | 2018-10-31 | 2021-07-06 | 深圳麦克韦尔科技有限公司 | Electronic cigarette atomizer, assembling method thereof and electronic cigarette |
| CN211558820U (en) * | 2019-10-31 | 2020-09-25 | 刘敏娟 | Atomizer assembly and atomizer equipment comprising same |
| CN112812739B (en) * | 2020-12-31 | 2023-03-17 | 河北诚和龙盛电力工程有限公司 | Silicone rubber self-adhesive tape and preparation method thereof |
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