CN112063335B - Dustproof plug with shielding function and preparation method thereof - Google Patents
Dustproof plug with shielding function and preparation method thereof Download PDFInfo
- Publication number
- CN112063335B CN112063335B CN202010767435.4A CN202010767435A CN112063335B CN 112063335 B CN112063335 B CN 112063335B CN 202010767435 A CN202010767435 A CN 202010767435A CN 112063335 B CN112063335 B CN 112063335B
- Authority
- CN
- China
- Prior art keywords
- parts
- plug
- plug body
- accelerators
- dustproof plug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5213—Covers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0015—Gaskets or seals
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a dustproof plug with a shielding function and a preparation method thereof, wherein the dustproof plug comprises a dustproof plug body, a conductive layer coated on the dustproof plug body, and a glue layer which is arranged between the dustproof plug body and the conductive layer and combines the conductive layer and the dustproof plug body into a whole through crosslinking and curing; the adhesive layer comprises the following raw materials in parts by mass: 100 parts of ethylene propylene diene monomer, 2-10 parts of zinc oxide, 2-10 parts of stearic acid, 10-300 parts of reinforcing carbon black, 0.2-5 parts of triethanolamine, 0.2-10 parts of accelerator, 0-10 parts of sulfur, 0.5-20 parts of tackifier and 50-10000 parts of solvent. According to the dustproof plug, the conducting layer is compounded on the periphery of the dustproof plug body through the glue layer, so that the dustproof plug has a shielding function and is resistant to plugging and unplugging, and the use of upper ports of electronic equipment, communication equipment and the like is met.
Description
Technical Field
The invention relates to a dustproof plug, in particular to a dustproof plug with a shielding function and a preparation method thereof.
Background
At present, the dustproof plugs adopted by ports of electronic equipment, communication equipment and the like generally only play a dustproof role and do not have a shielding role. With the development of products, particularly 5G, the requirements on the shielding of ports are met, and the dustproof plug prepared by the metal-filled conductive adhesive is not resistant to plugging and unplugging and short in service life. Therefore, it is necessary to design a material with the functions of shielding and dust-proof, which is resistant to insertion and removal.
Disclosure of Invention
The invention aims to provide a plug-resistant dustproof plug with shielding function and a preparation method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: the dustproof plug with the shielding function comprises a dustproof plug body, a conductive layer coated on the dustproof plug body, and a glue layer which is arranged between the dustproof plug body and the conductive layer and combines the conductive layer and the dustproof plug body into a whole through crosslinking and curing;
the adhesive layer comprises the following raw materials in parts by mass: 100 parts of ethylene propylene diene monomer, 2-10 parts of zinc oxide, 2-10 parts of stearic acid, 10-300 parts of reinforcing carbon black, 0.2-5 parts of triethanolamine, 0.2-10 parts of accelerator, 0-10 parts of sulfur, 0.5-20 parts of tackifier and 50-10000 parts of solvent.
Preferably, the dustproof plug body is made of ethylene propylene diene monomer.
Preferably, the conductive layer is a conductive cloth or a conductive PI film.
Preferably, 0.1-5 parts of first accelerator and 0.1-5 parts of second accelerator are included in 0.2-10 parts of accelerators;
the first accelerator comprises one or more of thiuram accelerators, xanthate accelerators and dithio ammonium cumate accelerators;
the second accelerator comprises one or more of thiazole accelerators, sulfenamide amine accelerators, aldehyde amine accelerators, guanidine accelerators, thiourea accelerators and amine accelerators.
Preferably, the solvent comprises one or more of gasoline, diesel, kerosene, benzene, xylene, toluene and white spirit.
Preferably, the tackifier comprises a resin.
Preferably, the dust plug body comprises a plug head used for being matched into an equipment port, and a holding part connected with the plug head and used for plugging and unplugging the dust plug; the conducting layer is coated on part or all of the periphery of the plug head.
Preferably, the dust plug body further comprises a limiting step connected between the plug head and the holding part; the peripheral size of spacing step is greater than the peripheral size of chock plug.
The invention also provides a preparation method of the dustproof plug with the shielding function, which is characterized by comprising the following steps:
s1, uniformly mixing the raw materials except the solvent of the adhesive layer, preparing a sheet, immersing the sheet into the solvent, stirring and vacuumizing to form a mixed material of the adhesive layer;
s2, brushing the mixed material on the coating surface of the conductive cloth;
s3, coating the conductive cloth on the dustproof plug body by the coating surface of the conductive cloth;
and S4, heating and pressurizing to crosslink and solidify the mixed material, and compounding the conductive layer on the dustproof plug body to obtain the dustproof plug.
Preferably, in step S1, the brookfield viscosity of the mixture prepared is 10 to 20 ten thousand.
Preferably, in step S4, the conductive cloth is clamped on the outer periphery of the dust plug body by a clamp; the heating temperature is 120-190 ℃ and the time is 30s-5 min.
According to the dustproof plug, the conducting layer is compounded on the periphery of the dustproof plug body through the glue layer, so that the dustproof plug has a shielding function and is resistant to plugging and unplugging, and the use of upper ports of electronic equipment, communication equipment and the like is met.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a side view of a dust plug according to an embodiment of the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the dust plug with shielding function according to an embodiment of the present invention includes a dust plug body 10, a conductive layer 20 coated on the dust plug body 10, and a glue layer (not shown) disposed between the dust plug body 10 and the conductive layer 20 and formed by cross-linking and curing the conductive layer 20 and the dust plug body 10.
Wherein, the dust plug body 10 is made of ethylene propylene diene monomer. The conductive layer 20 is a conductive cloth or a conductive PI film; the conductive cloth can be polyester conductive cloth or fiber conductive cloth.
Structurally, the dust plug body 10 may include a plug head 11 and a grip portion 12 that meet. The plug 11 is intended to fit into an equipment port, closing the port. The holding part 12 is positioned outside the port of the equipment, so that the dust plug can be conveniently inserted and pulled out by holding with a hand. The conductive layer 20 is coated on the periphery of the plug 11, so that the plug 11 is resistant to plugging and unplugging and has a shielding function. If necessary, the conductive layer 20 may be coated only on a part of the outer circumference of the plug 11, for example, on the outer circumference of the end near the grip portion 12, or may be coated on the entire outer circumference of the plug 11.
In addition, in order to ensure the tight fit of the plug 11 and the equipment port and avoid the occurrence of gaps in the coating of the conductive layer 20, an annular groove may be provided on the outer periphery of the plug 11, and after the conductive layer 20 is placed in the annular groove, the surface of the conductive layer is flush with the outer peripheral surface of the plug 11.
Further, the dust plug body 10 further includes a limiting step 13 connected between the plug head 11 and the holding portion 12. The limiting step 13 is annular and protrudes out of the periphery of the plug head 11, and the peripheral size of the limiting step 13 is larger than that of the plug head 11. On the equipment port, the limiting step 13 is abutted against the outer side surface of the equipment port, and the holding part 12 is limited outside the equipment port and does not enter the equipment port along with the plug head 11.
In the invention, the glue layer comprises the following raw materials in parts by mass: 100 parts of ethylene propylene diene monomer, 2-10 parts of zinc oxide, 2-10 parts of stearic acid, 10-300 parts of reinforcing carbon black, 0.2-5 parts of triethanolamine, 0.2-10 parts of accelerator, 0-10 parts of sulfur, 0.5-20 parts of tackifier and 50-10000 parts of solvent.
The ethylene propylene diene monomer is used as a base material of the adhesive layer and is made of the same material as the dustproof plug body 10, so that the two are favorably bonded together. The zinc oxide is preferably activated zinc oxide. 0.2-10 parts of accelerator, including 0.1-5 parts of first accelerator and 0.1-5 parts of second accelerator. The first accelerator is a super accelerator, and can comprise one or more of thiuram accelerators, xanthate accelerators and dithio ammonium benzoate accelerators. The second accelerator is a common accelerator compared with the first accelerator, and can comprise one or more of thiazole accelerators, sulfenamide amine accelerators, aldehyde amine accelerators, guanidine accelerators, thiourea accelerators and amine accelerators. Tackifiers include resins such as C5, C9 resins, coumarone resins, and the like. The solvent comprises one or more of gasoline, diesel oil, kerosene, benzene, xylene, toluene and white gasoline.
Referring to fig. 1, the method for preparing the dust plug with shielding function of the present invention may include the following steps:
s1, uniformly mixing the raw materials except the solvent of the adhesive layer, preparing a sheet, immersing the sheet into the solvent, stirring and vacuumizing to form a mixed material of the adhesive layer.
The raw materials are preferably mixed on an open mill, uniformly mixed, thinly passed through a lower sheet, and the sheet is mixed with the solvent to form a mixed material. The brookfield viscosity of the resulting blend was 10 to 20 million.
And S2, brushing the mixed material on the coating surface of the conductive cloth 20.
The conductive portion 20 is prepared in advance. For the preparation of the polyester conductive fabric: and (3) activating the polyester fabric, and sequentially depositing copper and plating nickel to form the conductive fabric. For the fiber cloth, the conductive treatment is the same as that of polyester cloth. In the case of using a conductive PI film, copper plating and nickel plating are performed in this order on a PI film (polyimide film) to make the PI film metallized so as to have conductivity.
And S3, coating the dust plug body 10 with the conductive cloth 20 by the coating surface.
The dustproof plug body 10 is made of ethylene propylene diene monomer in advance and structurally comprises a plug head 11, a limiting step 13 and a holding part 12. The conductive cloth 20 is coated on the periphery of the plug head 11 of the dust plug body 10 by the coating surface.
And S4, heating and pressurizing to crosslink and solidify the mixed material, and compounding the conductive layer 20 on the dustproof plug body 10 to obtain the dustproof plug.
Wherein, the conductive cloth is clamped on the periphery of the dustproof plug body through the clamp to realize pressurization. The heating temperature is 120-190 ℃ and the time is 30s-5 min. And (3) forming a glue layer after the mixed materials are crosslinked and cured.
And trimming burrs of the prepared dustproof plug according to the requirement.
Taking the preparation of a dust plug applied to the USB connector of the unmanned aerial vehicle as an example, the preparation method comprises the following specific steps:
preparing a mixed material of an adhesive layer: 500g of Tri-wellia 4045 ethylene propylene diene monomer with Mooney viscosity of 42, vinyl content of 45% and ENB content of 8% is plasticated, added to a two-roll mill, 25g of 95% pure active zinc oxide, 7.5g of stearic acid and 3g of triethanolamine are added to act as a reaction activator, and mixed uniformly. Adding 25g C9 resin, and mixing; adding 375g of reinforcing agent N550 carbon black in total into the mixture in two to three times, uniformly mixing, controlling the temperature of a roller of an open mill below 40 ℃, adding vulcanization accelerator 4gCZ (N-cyclohexyl-2-benzothiazole sulfonamide), 10g of TMTD (tetramethylthiuram disulfide) and 3.5g of insoluble sulfur, uniformly mixing, thinly passing through a lower sheet, immersing the lower sheet into 1000g of No. 92 gasoline for 24 hours while immersing, vacuumizing and stirring by a powerful stirrer while controlling the temperature below 40 ℃, and preparing a mixed material (paste) with the Brookfield viscosity of 10-20 ten thousand.
Brushing: and (3) treating the EPDM mucilage of the conductive cloth coating surface. Selecting a terylene conductive cloth with the total thickness of 0.1mm, taking a proper amount of mixed material, dipping the mixed material by a brush, and uniformly coating one surface of the terylene conductive cloth with the thickness of about 0.2mm for later use.
The dust plug body is formed in one step: and (3) installing a one-step forming die on a 200T heating flat vulcanizing machine, and weighing the weight of the EPDM rubber blank. Adding into preheated mold cavity, closing the mold, pressurizing, vulcanizing at 170 deg.C for 5min, opening the mold, and taking out to obtain the dustproof plug body.
Secondary coating molding: firstly, the terylene conductive cloth with the coating is positioned on a clamp which is molded secondarily, then the dustproof plug body is placed in a cavity in the middle, the clamp is folded to tightly coat the terylene conductive cloth on the periphery of the dustproof plug body, and after the terylene conductive cloth is maintained at 170 ℃ for 2mm, the clamp is loosened and taken out to obtain the dustproof plug.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A dustproof plug with a shielding function is characterized by comprising a dustproof plug body, a conductive layer coated on the dustproof plug body, and a glue layer which is arranged between the dustproof plug body and the conductive layer and combines the conductive layer and the dustproof plug body into a whole through crosslinking and curing;
the dustproof plug body is made of ethylene propylene diene monomer;
the conducting layer is conducting cloth or a conducting PI film;
the adhesive layer comprises the following raw materials in parts by mass: 100 parts of ethylene propylene diene monomer, 2-10 parts of zinc oxide, 2-10 parts of stearic acid, 10-300 parts of reinforcing carbon black, 0.2-5 parts of triethanolamine, 0.2-10 parts of accelerator, 0-10 parts of sulfur, 0.5-20 parts of tackifier and 50-10000 parts of solvent, wherein the Brookfield viscosity of a mixed material prepared from the raw materials is 10-20 ten thousand;
the solvent comprises one or more of gasoline, diesel oil, kerosene, benzene, xylene, toluene and white gasoline.
2. The dust plug with shielding function according to claim 1, wherein 0.2 to 10 parts of said accelerators include 0.1 to 5 parts of the first accelerator and 0.1 to 5 parts of the second accelerator;
the first accelerator comprises one or more of thiuram accelerators, xanthate accelerators and dithio ammonium cumate accelerators;
the second accelerator comprises one or more of thiazole accelerators, sulfenamide amine accelerators, aldehyde amine accelerators, guanidine accelerators, thiourea accelerators and amine accelerators.
3. The dust plug with a shielding function according to claim 1, wherein the tackifier comprises a resin.
4. The dust plug with the shielding function according to any one of claims 1 to 3, wherein the dust plug body comprises a plug head for fitting into an equipment port, a grip portion for connecting with the plug head and plugging the dust plug; the conducting layer is coated on part or all of the periphery of the plug head.
5. The dust plug with shielding function according to claim 4, wherein the dust plug body further comprises a limiting step connected between the plug head and the holding portion; the peripheral size of spacing step is greater than the peripheral size of chock plug.
6. A method for preparing the dust plug with shielding function according to any one of claims 1 to 5, comprising the steps of:
s1, uniformly mixing the raw materials except the solvent of the adhesive layer, preparing a sheet, immersing the sheet into the solvent, stirring and vacuumizing to form a mixed material of the adhesive layer;
s2, brushing the mixed material on the coating surface of the conductive cloth;
s3, coating the conductive cloth on the dustproof plug body by the coating surface of the conductive cloth;
and S4, heating and pressurizing to crosslink and solidify the mixed material, and compounding the conductive layer on the dustproof plug body to obtain the dustproof plug.
7. The preparation method according to claim 6, wherein in step S1, the brookfield viscosity of the mixture is 10-20 ten thousand;
in step S4, clamping the conductive cloth on the outer periphery of the dust plug body by a clamp; the heating temperature is 120-190 ℃ and the time is 30s-5 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010767435.4A CN112063335B (en) | 2020-08-03 | 2020-08-03 | Dustproof plug with shielding function and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010767435.4A CN112063335B (en) | 2020-08-03 | 2020-08-03 | Dustproof plug with shielding function and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112063335A CN112063335A (en) | 2020-12-11 |
| CN112063335B true CN112063335B (en) | 2022-03-08 |
Family
ID=73656791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010767435.4A Active CN112063335B (en) | 2020-08-03 | 2020-08-03 | Dustproof plug with shielding function and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112063335B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103387801B (en) * | 2013-07-16 | 2014-12-24 | 山西新华化工有限责任公司 | Self-cleaning coated tape |
| CN104427015A (en) * | 2013-08-22 | 2015-03-18 | 西安开能数字信息技术有限责任公司 | Convenient multifunctional practical dustproof stopper |
| CN205071281U (en) * | 2015-10-30 | 2016-03-02 | 联宝(合肥)电子科技有限公司 | Earphone jack dust plug |
| JP6562263B2 (en) * | 2015-12-14 | 2019-08-21 | 住友ゴム工業株式会社 | Conductive rubber composition and developing roller |
| CN107082965B (en) * | 2017-05-24 | 2019-08-02 | 北京市射线应用研究中心 | A kind of anti-neutron composite shielding material of self-adhering-type and the preparation method and application thereof |
| CN208401151U (en) * | 2018-07-04 | 2019-01-18 | 南通尚工工业设计有限公司 | A kind of apple version throwing screen adapter dust plug |
| CN109627609A (en) * | 2018-12-27 | 2019-04-16 | 江阴海达橡塑股份有限公司 | One kind superconducting EPT rubber packing item |
-
2020
- 2020-08-03 CN CN202010767435.4A patent/CN112063335B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112063335A (en) | 2020-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20070074886A1 (en) | Semiconductive coating and application process for shielded elastomeric electrical cable accessories | |
| CN102061017A (en) | Rubber for sneaker sole and preparation method thereof | |
| CN112063335B (en) | Dustproof plug with shielding function and preparation method thereof | |
| CN103935686B (en) | A kind of light heat-resisting conveyer belt | |
| CN110581425A (en) | method for manufacturing integrated structural connector assembly | |
| CN114410274A (en) | Flame-retardant silicone sealant for hollow glass and preparation method thereof | |
| CN106280736A (en) | A kind of chlorosulfonated polyethylene coating rubber cement and preparation method thereof | |
| CN110758982B (en) | Carbon fiber core rubber conveying belt and manufacturing method thereof | |
| CN106318268B (en) | A kind of adhesive and preparation method thereof improving neoprene and the bonding of polyester line | |
| CN115584064B (en) | Variable modulus damping rubber material and preparation method and application thereof | |
| KR101413176B1 (en) | Release Cover for Tire Cure Bladder and Manufacturing method thereof | |
| CN107250201B (en) | Tyre for vehicle wheels | |
| CN103387801B (en) | Self-cleaning coated tape | |
| KR102023597B1 (en) | Stabilizer bar molding structure for vulcanized rubber | |
| JP5883267B2 (en) | Bonding method between vulcanized rubber and resin member | |
| EP3539762B1 (en) | Method for permanently connecting vulcanized rubber components and vehicle tyres | |
| CN110757857A (en) | Manufacturing method of high-temperature-resistant aramid fiber conveying belt | |
| DE202019102894U1 (en) | RFID transponder | |
| EP3898793B1 (en) | Conductive elastomer material having electrical contacting points | |
| CN110172313A (en) | A kind of body of a motor car shockproof glue and preparation method thereof | |
| JP3229388B2 (en) | Pneumatic tire | |
| JP2684193B2 (en) | Adhesive composition for glass tensile member for belt | |
| JP2613627B2 (en) | Method of bonding millable urethane elastomer to rubber and laminate thereof | |
| JP3354104B2 (en) | How to insulate a cathode ray tube | |
| CN110682558A (en) | Preparation method of silicone membrane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |