CN110500408A - A kind of silica gel sealing washer and its adhesive bonding method - Google Patents
A kind of silica gel sealing washer and its adhesive bonding method Download PDFInfo
- Publication number
- CN110500408A CN110500408A CN201910794473.6A CN201910794473A CN110500408A CN 110500408 A CN110500408 A CN 110500408A CN 201910794473 A CN201910794473 A CN 201910794473A CN 110500408 A CN110500408 A CN 110500408A
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- CN
- China
- Prior art keywords
- layer
- silica gel
- parts
- polyurethane foam
- polyurethane
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
Abstract
The invention belongs to sealing ring technical fields, in particular a kind of silica gel sealing washer and its adhesive bonding method, including tubular polyurethane foam layer, the lateral wall of the polyurethane foam layer is equipped with electrostatic screen layer, the electrostatic screen layer is fixedly connected with the polyurethane foam layer, the top and bottom of the polyurethane foam layer are respectively and fixedly provided with silica gel foamed cotton layer, and the outer wall of the silica gel foamed cotton layer is coated with non-drying glue layer；By the way that glass fibre is added in the raw material components of polyurethane foam layer, glass fibre is blended in polyurethane and is foamed, the intensity, toughness and tensile capacity of polyurethane can be enhanced, camera module can be fixed, centering effect is good, and silica gel foamed cotton layer is provided at the both ends of polyurethane foam cotton, it can use silica gel foamed cotton layer and combine foaming with the polyurethane with glass fibre, make the integrated molding in foaming of polyurethane and silica gel, silica gel foaming layer is Nian Jie with adhesive sticker, sticky more preferable, adhesion property is good.
Description
Technical field
The invention belongs to sealing ring technical fields, and in particular to a kind of silica gel sealing washer and its adhesive bonding method.
Background technique
With the development of technique for taking, more and more electronic products (mobile phone, laptop) all have shooting function,
It can be all usually provided with camera module in these electronic products, camera module is assembled into the rear shell of these electronic products
In, user can carry out shooting operation by camera module.
In mobile phone camera module group, mainly using polyurethane foam as gasket between camera and front shell assemblies
Circle rings shooting effect to prevent dust, impurity, steam from entering camera face, wherein camera is not done with the use of foam washer
Glue is fixed, and still, silica gel foam is difficult viscous material, and most high viscous acrylic glue, silica gel are difficult to cling.
Summary of the invention
To solve the problems mentioned above in the background art.The present invention provides a kind of silica gel sealing washer and its bonding sides
Method has the characteristics that ring structure is stable, bonding is stable.
To achieve the above object, the invention provides the following technical scheme: a kind of silica gel sealing washer, including it is tubular
Polyurethane foam layer, the lateral wall of the polyurethane foam layer are equipped with electrostatic screen layer, and the electrostatic screen layer gathers with described
Urethane foamed cotton layer is fixedly connected, and the top and bottom of the polyurethane foam layer are respectively and fixedly provided with silica gel foamed cotton layer, the silica gel bubble
The outer wall of cotton layer is coated with non-drying glue layer, and the middle position of the polyurethane foam layer offers the through-hole of perforation.
Preferably, the polyurethane foam layer includes the component of following parts by weight: 60-70 parts of polyurethane, diisocyanate
15-20 parts of ester, 3-6 parts of chain extender, 1-3 parts of crosslinking agent and 0.5-2 parts of glass fibre；The preparation method of the polyurethane foam layer
The following steps are included:
S1, by 60-70 parts of polyurethane, 15-20 parts of diisocyanate, 3-6 parts of chain extender be added into reaction kettle, stirring is mixed
It closes uniform；
S2, glass fibre 1.0-2.5 parts is added into reaction kettle, is heated to reacting 2-4h at 130-150 DEG C, and to reaction
Protective gas is passed through in kettle；
S3, continue for reaction kettle to be warming up to 190-200 DEG C, be added crosslinking agent 1-3 parts, be uniformly mixed, obtain performed polymer；
S4, performed polymer is coated on substrate, is sent into curing oven and carries out curing molding, obtains polyurethane foam.
Preferably, the electrostatic screen layer is coated in the electrocondution slurry on the polyurethane foam layer lateral wall.
Preferably, the electrocondution slurry is graphene slurry.
Preferably, the silica gel foamed cotton layer includes the component of following parts by weight: 30-40 parts of silica gel particle, polyurethane 15-
25 parts and crosslinking agent 3-5 parts.
A kind of adhesive bonding method of above-mentioned silica gel sealing washer, comprising the following steps:
The release paper that is bonded on S1, removing non-drying glue layer lateral wall, then will be described on the inside of the polyurethane foam layer
Through-hole is corresponding with camera module；
S2, the non-drying glue layer correspondence of side is bonded in outside camera, the other side is adhesively fixed with product casing, makes to take the photograph
As head, the through-hole and lens are located at same straight line.
Compared with prior art, the beneficial effects of the present invention are:
In the present invention, by the way that glass fibre is added in the raw material components of polyurethane foam layer, glass fibre is blended in
It foams in polyurethane, the intensity, toughness and tensile capacity of polyurethane can be enhanced, camera module can be fixed, it is right
Middle effect is good, and is provided with silica gel foamed cotton layer at the both ends of polyurethane foam cotton, can use silica gel foamed cotton layer and has glass
The polyurethane of fiber combines foaming, makes the integrated molding in foaming of polyurethane and silica gel, and silica gel foaming layer is Nian Jie with adhesive sticker,
Sticky more preferable, adhesion property is good.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural diagram of the present invention.
In figure: 1, polyurethane foam layer；101, through-hole；2, electrostatic screen layer；3, silica gel foamed cotton layer；4, non-drying glue layer.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
Referring to Fig. 1, the present invention is the following technical schemes are provided: a kind of silica gel sealing washer, including tubular poly- ammonia
Ester foamed cotton layer 1, the lateral wall of polyurethane foam layer 1 are equipped with electrostatic screen layer 2, and electrostatic screen layer 2 and polyurethane foam layer 1 are solid
Fixed connection, the top and bottom of polyurethane foam layer 1 are respectively and fixedly provided with silica gel foamed cotton layer 3, and the outer wall of silica gel foamed cotton layer 3 is coated with not
Drying adhesive layer 4, the middle position of polyurethane foam layer 1 offer the through-hole 101 of perforation.
Specifically, the component of polyurethane foam layer 1 including following parts by weight: 60 parts of polyurethane, 15 parts of diisocyanate,
3 parts of chain extender, 1 part of crosslinking agent and 0.5 part of glass fibre；The preparation method of polyurethane foam layer 1 the following steps are included:
S1, by 60 parts of polyurethane, 15 parts of diisocyanate, 3 parts of chain extender be added into reaction kettle, be uniformly mixed；
S2,1.0 parts of glass fibre are added into reaction kettle, are heated to reacting 2h at 130 DEG C, and be passed through guarantor into reaction kettle
Protect gas；
S3, continue for reaction kettle to be warming up to 190 DEG C, be added 1 part of crosslinking agent, be uniformly mixed, obtain performed polymer；
S4, performed polymer is coated on substrate, is sent into curing oven and carries out curing molding, obtains polyurethane foam.
Specifically, electrostatic screen layer 2 is coated in the electrocondution slurry on 1 lateral wall of polyurethane foam layer.
Specifically, electrocondution slurry is graphene slurry.
Specifically, the component of silica gel foamed cotton layer 3 including following parts by weight: 30 parts of silica gel particle, 15 parts of polyurethane and handing over
3 parts of agent of connection.
A kind of adhesive bonding method of above-mentioned silica gel sealing washer, comprising the following steps:
The release paper being bonded on S1, removing 4 lateral wall of non-drying glue layer, then by the through-hole 101 of 1 inside of polyurethane foam layer
It is corresponding with camera module；
S2, the correspondence of non-drying glue layer 4 of side is bonded in outside camera, the other side is adhesively fixed with product casing, makes
Camera, through-hole 101 and lens are located at same straight line.
In the present embodiment, by the way that glass fibre is added in the raw material components of polyurethane foam layer 1, glass fibre is mixed
It foams in polyurethane, the intensity, toughness and tensile capacity of polyurethane can be enhanced, camera module can be fixed,
Centering effect is good, and is provided with silica gel foamed cotton layer at the both ends of polyurethane foam cotton, can use silica gel foamed cotton layer and has glass
The polyurethane of glass fiber combines foaming, makes the integrated molding in foaming of polyurethane and silica gel, and silica gel foaming layer and adhesive sticker are viscous
It connects, viscosity is more preferable, and adhesion property is good, is in addition also coated with graphene conductive slurry in polyurethane foam layer 1, can be in polyurethane
The external of foamed cotton layer 1 forms electrostatic screen layer, reduces the absorption of dust, enter dust will not in camera module, guarantees
The cleaning of 1 inner via hole 101 of polyurethane foam layer.
Embodiment 2
Referring to Fig. 1, the present invention is the following technical schemes are provided: a kind of silica gel sealing washer, including tubular poly- ammonia
Ester foamed cotton layer 1, the lateral wall of polyurethane foam layer 1 are equipped with electrostatic screen layer 2, and electrostatic screen layer 2 and polyurethane foam layer 1 are solid
Fixed connection, the top and bottom of polyurethane foam layer 1 are respectively and fixedly provided with silica gel foamed cotton layer 3, and the outer wall of silica gel foamed cotton layer 3 is coated with not
Drying adhesive layer 4, the middle position of polyurethane foam layer 1 offer the through-hole 101 of perforation.
Specifically, the component of polyurethane foam layer 1 including following parts by weight: 65 parts of polyurethane, 17 parts of diisocyanate,
4 parts of chain extender, 2 parts of crosslinking agent and 1 part of glass fibre；The preparation method of polyurethane foam layer 1 the following steps are included:
S1, by 65 parts of polyurethane, 17 parts of diisocyanate, 4 parts of chain extender be added into reaction kettle, be uniformly mixed；
S2,1 part of glass fibre is added into reaction kettle, is heated to reacting 3h at 140 DEG C, and be passed through protection into reaction kettle
Gas；
S3, continue for reaction kettle to be warming up to 195 DEG C, be added 2 parts of crosslinking agent, be uniformly mixed, obtain performed polymer；
S4, performed polymer is coated on substrate, is sent into curing oven and carries out curing molding, obtains polyurethane foam.
Specifically, electrostatic screen layer 2 is coated in the electrocondution slurry on 1 lateral wall of polyurethane foam layer.
Specifically, electrocondution slurry is graphene slurry.
Specifically, the component of silica gel foamed cotton layer 3 including following parts by weight: 35 parts of silica gel particle, 20 parts of polyurethane and handing over
4 parts of agent of connection.
A kind of adhesive bonding method of above-mentioned silica gel sealing washer, comprising the following steps:
The release paper being bonded on S1, removing 4 lateral wall of non-drying glue layer, then by the through-hole 101 of 1 inside of polyurethane foam layer
It is corresponding with camera module；
S2, the correspondence of non-drying glue layer 4 of side is bonded in outside camera, the other side is adhesively fixed with product casing, makes
Camera, through-hole 101 and lens are located at same straight line.
In the present embodiment, by the way that glass fibre is added in the raw material components of polyurethane foam layer 1, glass fibre is mixed
It foams in polyurethane, the intensity, toughness and tensile capacity of polyurethane can be enhanced, camera module can be fixed,
Centering effect is good, and is provided with silica gel foamed cotton layer at the both ends of polyurethane foam cotton, can use silica gel foamed cotton layer and has glass
The polyurethane of glass fiber combines foaming, makes the integrated molding in foaming of polyurethane and silica gel, and silica gel foaming layer and adhesive sticker are viscous
It connects, viscosity is more preferable, and adhesion property is good.
Embodiment 3
Referring to Fig. 1, the present invention is the following technical schemes are provided: a kind of silica gel sealing washer, including tubular poly- ammonia
Ester foamed cotton layer 1, the lateral wall of polyurethane foam layer 1 are equipped with electrostatic screen layer 2, and electrostatic screen layer 2 and polyurethane foam layer 1 are solid
Fixed connection, the top and bottom of polyurethane foam layer 1 are respectively and fixedly provided with silica gel foamed cotton layer 3, and the outer wall of silica gel foamed cotton layer 3 is coated with not
Drying adhesive layer 4, the middle position of polyurethane foam layer 1 offer the through-hole 101 of perforation.
Specifically, polyurethane foam layer 1 includes the component of following parts by weight: 70 parts of polyurethanes, diisocyanate
20 parts of ester, 6 parts of chain extender, 3 parts of crosslinking agent and 2 parts of glass fibre；The preparation method of polyurethane foam layer 1 the following steps are included:
S1, by 70 parts of polyurethanes, 20 parts of diisocyanate, 6 parts of chain extender be added into reaction kettle, be stirred
Uniformly；
S2,2.5 parts of glass fibre are added into reaction kettle, are heated to reacting 4h at 150 DEG C, and be passed through guarantor into reaction kettle
Protect gas；
S3, continue for reaction kettle to be warming up to 200 DEG C, be added 3 parts of crosslinking agent, be uniformly mixed, obtain performed polymer；
S4, performed polymer is coated on substrate, is sent into curing oven and carries out curing molding, obtains polyurethane foam.
Specifically, electrostatic screen layer 2 is coated in the electrocondution slurry on 1 lateral wall of polyurethane foam layer.
Specifically, electrocondution slurry is graphene slurry.
Specifically, the component of silica gel foamed cotton layer 3 including following parts by weight: 40 parts of silica gel particle, 25 parts of polyurethane and handing over
5 parts of agent of connection.
A kind of adhesive bonding method of above-mentioned silica gel sealing washer, comprising the following steps:
The release paper being bonded on S1, removing 4 lateral wall of non-drying glue layer, then by the through-hole 101 of 1 inside of polyurethane foam layer
It is corresponding with camera module；
S2, the correspondence of non-drying glue layer 4 of side is bonded in outside camera, the other side is adhesively fixed with product casing, makes
Camera, through-hole 101 and lens are located at same straight line.
In the present embodiment, by being provided with silica gel foamed cotton layer at the both ends of polyurethane foam cotton, silica gel foam can use
Layer combines foaming with the polyurethane with glass fibre, makes the integrated molding in foaming of polyurethane and silica gel, silica gel foaming layer
Nian Jie with adhesive sticker, viscosity is more preferable, and adhesion property is good, is in addition also coated with graphene conductive slurry, energy in polyurethane foam layer 1
It is enough to form electrostatic screen layer in the external of polyurethane foam layer 1, the absorption of dust is reduced, dust is made not enter camera mould
In group, guarantee the cleaning of 1 inner via hole 101 of polyurethane foam layer.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (6)
1. a kind of silica gel sealing washer, including tubular polyurethane foam layer (1), it is characterised in that: the polyurethane foam
The lateral wall of cotton layer (1) is equipped with electrostatic screen layer (2), and the electrostatic screen layer (2) and the polyurethane foam layer (1) are fixed
Connection, the top and bottom of the polyurethane foam layer (1) are respectively and fixedly provided with silica gel foamed cotton layer (3), the silica gel foamed cotton layer (3)
Outer wall is coated with non-drying glue layer (4), and the middle position of the polyurethane foam layer (1) offers the through-hole (101) of perforation.
2. a kind of silica gel sealing washer according to claim 1, it is characterised in that: the polyurethane foam layer (1) includes
The component of following parts by weight: 60-70 parts of polyurethane, 15-20 parts of diisocyanate, 3-6 parts of chain extender, 1-3 parts of crosslinking agent and
0.5-2 parts of glass fibre；The preparation method of the polyurethane foam layer (1) the following steps are included:
S1, by 60-70 parts of polyurethane, 15-20 parts of diisocyanate, 3-6 parts of chain extender be added into reaction kettle, be stirred
It is even；
S2, glass fibre 1.0-2.5 parts is added into reaction kettle, is heated to reacting 2-4h at 130-150 DEG C, and into reaction kettle
It is passed through protective gas；
S3, continue for reaction kettle to be warming up to 190-200 DEG C, be added crosslinking agent 1-3 parts, be uniformly mixed, obtain performed polymer；
S4, performed polymer is coated on substrate, is sent into curing oven and carries out curing molding, obtains polyurethane foam.
3. a kind of silica gel sealing washer according to claim 1, it is characterised in that: the electrostatic screen layer (2) is coating
Electrocondution slurry on polyurethane foam layer (1) lateral wall.
4. a kind of silica gel sealing washer according to claim 3, it is characterised in that: the electrocondution slurry is graphene slurry
Material.
5. a kind of silica gel sealing washer according to claim 1, it is characterised in that: the silica gel foamed cotton layer (3) include with
The component of lower parts by weight: 30-40 parts of silica gel particle, 15-25 parts and crosslinking agent 3-5 parts of polyurethane.
6. a kind of adhesive bonding method of silica gel sealing washer according to claim 1, it is characterised in that:
The following steps are included:
The release paper being bonded on S1, removing non-drying glue layer (4) lateral wall, then by the institute on the inside of the polyurethane foam layer (1)
It is corresponding with camera module to state through-hole (101)；
S2, non-drying glue layer (4) correspondence of side is bonded in outside camera, the other side is adhesively fixed with product casing, makes to take the photograph
As head, the through-hole (101) and lens are located at same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910794473.6A CN110500408A (en) | 2019-08-27 | 2019-08-27 | A kind of silica gel sealing washer and its adhesive bonding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910794473.6A CN110500408A (en) | 2019-08-27 | 2019-08-27 | A kind of silica gel sealing washer and its adhesive bonding method |
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| Publication Number | Publication Date |
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| CN110500408A true CN110500408A (en) | 2019-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910794473.6A Pending CN110500408A (en) | 2019-08-27 | 2019-08-27 | A kind of silica gel sealing washer and its adhesive bonding method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112390979A (en) * | 2020-10-20 | 2021-02-23 | 北京中石伟业科技无锡有限公司 | Preparation method of high-temperature conductive shielding silica gel foam |
| CN116512688A (en) * | 2023-05-17 | 2023-08-01 | 辛集市北达皮业有限公司 | Environment-friendly leather composite fabric and preparation method thereof |
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| US20160138743A1 (en) * | 2012-12-20 | 2016-05-19 | Advanced Drainage Systems, Inc. | Methods and assemblies for welding a gasket to a pipe section |
| CN106183267A (en) * | 2016-07-22 | 2016-12-07 | 苏州佳值电子工业有限公司 | A kind of camera head protecting film and preparation technology thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS49103972A (en) * | 1973-02-02 | 1974-10-02 | ||
| US20160138743A1 (en) * | 2012-12-20 | 2016-05-19 | Advanced Drainage Systems, Inc. | Methods and assemblies for welding a gasket to a pipe section |
| CN103753913A (en) * | 2014-01-07 | 2014-04-30 | 奕东电子(常熟)有限公司 | Shockproof, anti-skidding and antistatic protective film |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112390979A (en) * | 2020-10-20 | 2021-02-23 | 北京中石伟业科技无锡有限公司 | Preparation method of high-temperature conductive shielding silica gel foam |
| CN116512688A (en) * | 2023-05-17 | 2023-08-01 | 辛集市北达皮业有限公司 | Environment-friendly leather composite fabric and preparation method thereof |
| CN116512688B (en) * | 2023-05-17 | 2024-01-09 | 辛集市北达皮业有限公司 | Environment-friendly leather composite fabric and preparation method thereof |
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Application publication date: 20191126 |
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