CN207579267U - A kind of PU and e-PTFE composite membranes of high-peeling strength - Google Patents
A kind of PU and e-PTFE composite membranes of high-peeling strength Download PDFInfo
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- CN207579267U CN207579267U CN201721736561.3U CN201721736561U CN207579267U CN 207579267 U CN207579267 U CN 207579267U CN 201721736561 U CN201721736561 U CN 201721736561U CN 207579267 U CN207579267 U CN 207579267U
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Abstract
The utility model discloses a kind of PU and e PTFE composite films of high-peeling strength, including e PTFE film layers and PU layers, the e PTFE film layers are made of the fiber and node of a plurality of interconnections, a plurality of fibers form several micropores after being connected with node, bottom surface PU layers described has extended downwardly several extensions, and each extension is stretched into corresponding micropore and is fixedly connected with micropore.Bottom surface PU layers described has extended downwardly several extensions, each extension is stretched into corresponding micropore and is fixedly connected with micropore, extension forms the new structure of " rattan twines tree " in this way after being connect with micropore, if you need to which PU layers and e PTFE film layers are removed, it then needs except being removed between PU layers and e PTFE film layers, it also needs to extension and micropore stripping, but this has been considerably improved peel strength, so as to also improve the service life of composite membrane.
Description
Technical field
The utility model is related to film applications, in particular to a kind of PU and e-PTFE composite membranes of high-peeling strength.
Background technology
Polytetrafluoroethylene (PTFE)（PTFE）With excellent high temperature resistant, low temperature resistant, resistant to chemical etching, weatherability, high lubrication, do not glue
Attached, excellent biocompatibility, nonhazardous, electrical insulating property, dustless property.After special stretch processes, obtain
A kind of expanded polytetrafluoroethylsealing（e-PTFE）, other than retaining the above-mentioned performances of PTFE, also with waterproof, ventilative, dust-proof, windproof
Warming effect.Therefore, the dust-proof field of waterproof and breathable, consumer products field, cable and CA cable assembly field, electronic component with
Electrochemical material field, field of textile, fiber product field, filtering product field, medical product field, sealed product neck
Domain has a wide range of applications.
Particularly in field of textile and field of cables, it is often necessary to polyurethane（PU）Material carries out compound, e-
The durability and usability of PTFE just can further expand.In field of textile, since thickness is probably at 20 ~ 30 microns
The pure films of e-PTFE are very soft, poor flexibility, suitability for secondary processing are poor, if at this point, compound with flexible PU, it is acquired
A kind of composite material, have the advantages of the two is common, not only can be dust-proof with waterproof and breathable, but also can make composite material have it is good
Good elasticity.In the case where the policy of " made in China 2025 " is called, the high-end manufacture of intelligence will become a kind of trend, and intelligence manufacture is not from
The support of automation equipment is opened, these equipment often have numerous mechanical arms to complete the work of one of link, their work
Work all must transmit signal instruction by signal cable.And the production process for much standardizing, it generally requires 100,000
Grade, 300,000 grades, 1,000,000 grades of dust proof workshop carry out, particularly, in million grades or more of workshop, if with filler is contained
The sheath of PVC material, when robotic arm swings back and forth 500,000 times, the sheath of the PVC material containing filler can generate largely
Dust, the acid test caused by the cleannes of toilet.Due to e-PTFE film bulk poor flexibilities, usually apparatus
There is excellent elastic material PU compound therewith, be sandwiched in the centre of e-PTFE films.
Either still protected for the PU/e-PTFE composite membranes of tissue fabric for the signal cable of dust proof workshop cable
The PU/e-PTFE composite membranes of set, they will problems faced be：How PU to be tightly combined to e-PTFE film surfaces,
To be an important technical barrier, inertia of this technical barrier derived from PTFE surfaces is very strong, almost all of substance
It is difficult to it adheres to therewith.Currently, traditional PU and e-PTFE composite membranes are only merely to cover PU layers on the surface of e-PTFE.
Utility model content
Provided by the utility model is a kind of PU and e-PTFE composite membranes of high-peeling strength, and main purpose is to overcome
The problem of existing PU/e-PTFE composite membranes are easily peeled off.
In order to solve the technical issues of above-mentioned, the utility model adopts the following technical scheme：
PU the and e-PTFE composite membranes of a kind of high-peeling strength, including e-PTFE film layers and PU layers, the e-PTFE
Film layer is made of the fiber and node of a plurality of interconnections, and it is micro- that a plurality of fibers form several after being connected with node
Hole, bottom surface PU layers described have extended downwardly several extensions, and each extension is stretched into corresponding micropore and consolidated with micropore
Fixed connection.
Further, the extension cures connection well into after micropore by PU solution by crosslinking agent.
From the above description of the utility model, it can be seen, compared to the prior art, the utility model has the following advantages that：This
Utility model structure novel, ingenious in design, bottom surface PU layers described has extended downwardly several extensions, and each extension stretches into
It being fixedly connected in corresponding micropore and with micropore, such extension forms the new structure of " rattan twines tree " after being connect with micropore,
If you need to which PU layers and e-PTFE film layers are removed, then need except being removed between PU layers and e-PTFE film layers, it is also necessary to will
Extension and micropore stripping, but this has been considerably improved peel strength, so as to also improve the service life of composite membrane.
Description of the drawings
Fig. 1 is the utility model enlarged diagram.
Specific embodiment
With reference to Fig. 1.PU the and e-PTFE composite membranes of a kind of high-peeling strength, including e-PTFE film layers 1 and PU layers 2.
The e-PTFE film layers 1 are made of the fiber 11 and node 12 of a plurality of interconnections, a plurality of fibers 11 and node
Several micropores are formed after 12 connections（It is not marked in figure）, the bottom surface of the PU layers 2 extended downwardly several extensions 21, often
A extension 21 stretches into corresponding micropore（It is not marked in figure）Interior and and micropore（It is not marked in figure）It is fixedly connected.The extension
21 by PU solution well into micropore（It is not marked in figure）Cured afterwards by crosslinking agent and connected.
With reference to Fig. 1.The bottom surface of the PU layers 2 has extended downwardly several extensions 21, and each extension 21 stretches into correspondence
Micropore（It is not marked in figure）Interior and and micropore（It is not marked in figure）It is fixedly connected, such extension 21 and micropore（It is not marked in figure
Go out）The new structure of " rattan twines tree " is formd after connection.If you need to which PU layers 2 are removed with e-PTFE film layers 1, then need PU layers
Except being removed between 2 and e-PTFE film layers 1, it is also necessary to by extension 21 and micropore（It is not marked in figure）Stripping, but this is just
Peel strength is substantially increased, so as to also improve the service life of composite membrane.
The above is only the specific embodiments of the present invention, but the design concept of the present invention is not limited thereto,
All non-essential modifications to the present invention made by this concept should all belong to the row for invading scope of protection of the utility model
For.
Claims (2)
1. a kind of PU and e-PTFE composite membranes of high-peeling strength, it is characterised in that：Including e-PTFE film layers and PU layers, institute
It states e-PTFE film layers to be made of the fiber and node of a plurality of interconnections, a plurality of fibers are formed after connecting with node
Several micropores, bottom surface PU layers described have extended downwardly several extensions, and each extension is stretched into corresponding micropore simultaneously
It is fixedly connected with micropore.
2. a kind of PU and e-PTFE composite membranes of high-peeling strength as described in claim 1, it is characterised in that：The extension
Connection is cured by crosslinking agent well into after micropore by PU solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721736561.3U CN207579267U (en) | 2017-12-13 | 2017-12-13 | A kind of PU and e-PTFE composite membranes of high-peeling strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721736561.3U CN207579267U (en) | 2017-12-13 | 2017-12-13 | A kind of PU and e-PTFE composite membranes of high-peeling strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207579267U true CN207579267U (en) | 2018-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721736561.3U Active CN207579267U (en) | 2017-12-13 | 2017-12-13 | A kind of PU and e-PTFE composite membranes of high-peeling strength |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112848580A (en) * | 2021-02-04 | 2021-05-28 | 河南银金达新材料股份有限公司 | PETG/PET co-extrusion self-heat-sealing multilayer film and preparation method thereof |
-
2017
- 2017-12-13 CN CN201721736561.3U patent/CN207579267U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112848580A (en) * | 2021-02-04 | 2021-05-28 | 河南银金达新材料股份有限公司 | PETG/PET co-extrusion self-heat-sealing multilayer film and preparation method thereof |
| CN112848580B (en) * | 2021-02-04 | 2023-06-23 | 河南银金达新材料股份有限公司 | PETG/PET co-extrusion self-sealing multilayer film and preparation method thereof |
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