CN105001644A - Porous elastic film and preparation method thereof - Google Patents
Porous elastic film and preparation method thereof Download PDFInfo
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- CN105001644A CN105001644A CN201510434110.3A CN201510434110A CN105001644A CN 105001644 A CN105001644 A CN 105001644A CN 201510434110 A CN201510434110 A CN 201510434110A CN 105001644 A CN105001644 A CN 105001644A
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Abstract
The invention discloses a porous elastic film and a preparation method thereof. The porous elastic film is of a porous structure and is formed by mixing a heat-curable elastic material and a foaming material and then heating and curing the materials. The preparation method comprises the steps that the foaming material is evenly mixed into the heat-curable elastic material and the elastic material is heated to play curing effect and form the porous structure while the foaming material is heated to produce gas. Pores existing in the porous elastic film enable the deformation resistance of the film to be decreased and enable the specific surface area of the film to be increased, and accordingly the sensitivity of a sensing device can be improved.
Description
Technical field
The present invention relates to a kind of electronic component, be specifically related to a kind of porous elastic film and preparation method thereof, belong to electronic technology field.
Background technology
Along with the development of society, people is for the health of self, and the demand as information such as blood pressure, heart rate, blood sugar is further urgent.By the real-time monitoring for human body, can meet the demand of people to these information, therefore wearable device arises at the historic moment.Relative to other equipment, the requirement of wearable device is higher, as biocompatibility and blood compatibility.
As the sensor of important composition parts in wearable device, it is also proposed high request equally: comprise flexible, tensility, highly sensitive, fast response and the compatibility with human body.For meeting these requirements, thus the block resilient material with human body compatibility is applied in sensor.But the block resilient material of simple employing, it has, and elastic performance is limited, specific surface area is little, be applied to the problems such as the sensor medium sensitivities such as pressed gas are low.Therefore, the performance how increasing resilient material has become an important research direction.
Summary of the invention
The object of the invention is, solve the problem that existing resilient material elastic performance is limited, specific surface area is little, strengthen elastic performance and the specific surface area of resilient material, when enabling it be applied to sensor, increase the susceptibility of device.
The present invention is achieved by the following technical solutions:
A kind of porous elastic film, it is characterized in that, described poroelasticity film is vesicular structure, through be heating and curing after is formed after being mixed by thermofixation resilient material and foam material.
According to porous elastic film provided by the present invention, described thermofixation resilient material is polydimethylsiloxane (PDMS), urethane (PU) or platinum catalysis silica gel (Ecoflex).
According to porous elastic film provided by the present invention, described foam material is Diisopropyl azodicarboxylate, 2,2'-Azobis(2,4-dimethylvaleronitrile), toluene sulfonyl hydrazide, bis oxide (benzene sulphur is cruel) rib, sodium carbonate, sodium bicarbonate or bicarbonate of ammonia.
Another technical scheme of the present invention is as follows:
A preparation method for described porous elastic film, is characterized in that, comprise the following steps:
1) ethanolic soln, acetone soln and the deionized water substrate to polyethylene terephthalate (PET) is utilized to carry out ultrasonic cleaning, dry after cleaning, adopt oxygen plasma or UV/ozone process substrate surface;
2) take thermofixation resilient material and foam material respectively and both mixed, blending ratio is 10:1-10:3;
3) PET film is positioned on smooth base plate, the pad that the both sides rational height of this PET film is consistent, mixed uniformly thermofixation resilient material and foam material are poured in this PET film;
4) another PET film is covered on mixing material, with PET film surface scrolls on top of glass stick or metal bar or promotion, make mixing material be uniformly distributed between two-layer PET film;
5) cover in the PET film on top with the cover plate of surfacing, relative position between fixed base plate and cover plate and height, then heat in its global transfer to warm table, in heat-processed, foam material produces gas simultaneously with the solidification of thermofixation resilient material, forms vesicular structure;
6), after thermofixation resilient material solidifies completely, remove base plate, cover plate and two PET film, obtain required porous elastic film.
Beneficial effect of the present invention is: by foam material Homogeneous phase mixing in thermofixation resilient material, at foam material by while thermogenesis gas, resilient material is subject to thermogenesis solidification and forms cellular structure, and the material price wherein adopted is low, and complete processing is simple; Due to the existence of Elastic Film Hole, the deformation resistance of Elastic Film is diminished, adding the deformation quantity of Elastic Film when being stressed effect, thus adding the susceptibility of device when described porous elastic film is applied to pressure transmitter; In addition, the existence of Elastic Film Hole makes the specific surface area of Elastic Film increase, and thus when coordinating gas sensitive material to coat film surface, adding the surface-area of gas sensitive material, thus adding the susceptibility of gas sensor.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Elaborate to embodiments of the invention below in conjunction with accompanying drawing, following examples give detailed embodiment and concrete operating process premised on technical solution of the present invention, but protection scope of the present invention is not limited to following embodiment.
Refer to Fig. 1, described poroelasticity film is vesicular structure, through be heating and curing after is formed after being mixed by thermofixation resilient material and foam material.Described thermofixation resilient material is polydimethylsiloxane, urethane or platinum catalysis silica gel.Described foam material is Diisopropyl azodicarboxylate, 2,2'-Azobis(2,4-dimethylvaleronitrile), toluene sulfonyl hydrazide, bis oxide rib, sodium carbonate, sodium bicarbonate or bicarbonate of ammonia.
The preparation method of described porous elastic film comprises the following steps:
1) ethanolic soln, acetone soln and deionized water is utilized to carry out ultrasonic cleaning to the substrate of polyethylene terephthalate, dry after cleaning, adopt oxygen plasma or UV/ozone process substrate surface;
2) take thermofixation resilient material and foam material respectively and both mixed, blending ratio is 10:1-10:3;
3) PET film is positioned on smooth base plate, the pad that the both sides rational height of this PET film is consistent, mixed uniformly thermofixation resilient material and foam material are poured in this PET film;
4) another PET film is covered on mixing material, with PET film surface scrolls on top of glass stick or metal bar or promotion, make mixing material be uniformly distributed between two-layer PET film;
5) cover in the PET film on top with the cover plate of surfacing, relative position between fixed base plate and cover plate and height, then heat in its global transfer to warm table, in heat-processed, foam material produces gas simultaneously with the solidification of thermofixation resilient material, forms vesicular structure;
6), after thermofixation resilient material solidifies completely, remove base plate, cover plate and two PET film, obtain required porous elastic film.
The preparation method of described porous elastic film is further illustrated below with embodiment.
Embodiment 1
The preparation of described porous elastic film is completed by following concrete steps:
(1) ethanolic soln, acetone soln and deionized water is utilized to carry out ultrasonic cleaning to polyethylene terephthalate (PET) substrate, dry after cleaning, adopt oxygen plasma treatment substrate surface;
(2) take thermofixation resilient material polydimethylsiloxane (PDMS) and foam material sodium bicarbonate respectively, and both mixed, blending ratio is 10:1;
(3) PET film is positioned on smooth base plate, the pad that this PET film both sides rational height is consistent, mixed uniformly thermofixation resilient material and foam material are poured in PET film;
(4) another PET film is covered on mixing material, with glass stick or metal bar PET film surface scrolls atop or promotion, make mixing material be uniformly distributed between two-layer PET film;
(5) top is covered with the cover plate of surfacing, relative position between fixed base plate and cover plate and height, and heat in its global transfer to warm table, in heat-processed, foam material produces gas simultaneously with the solidification of thermofixation resilient material, film forming vesicular structure;
(6), after thermofixation resilient material solidifies completely, remove base plate, cover plate and two PET film, obtain required porous elastic film.
Embodiment 2
The preparation of described porous elastic film is completed by following concrete steps:
(1) ethanolic soln, acetone soln and deionized water is utilized to carry out ultrasonic cleaning to polyethylene terephthalate (PET) substrate, dry after cleaning, adopt UV/ozone process substrate surface;
(2) take thermofixation resilient material urethane (PU) and foam material Diisopropyl azodicarboxylate respectively, and both mixed, blending ratio is 5:1;
(3) PET film is positioned on smooth base plate, the pad that PET film both sides rational height is consistent, mixed uniformly thermofixation resilient material and foam material are fallen in PET film;
(4) another PET film is covered on mixing material, with glass stick or metal bar in PET film surface scrolls or promotion, make homogenize material be distributed between two-layer PET film;
(5) cover in the PET film on top with the cover plate of surfacing, relative position between fixed base plate and cover plate and height, and heat in its global transfer to warm table, in heat-processed, foam material produces gas simultaneously with the solidification of thermofixation resilient material, film forming vesicular structure;
(6), after thermofixation resilient material solidifies completely, remove base plate, cover plate and two PET film, obtain required porous elastic film.
Embodiment 3
The preparation of described porous elastic film is completed by following concrete steps:
(1) ethanolic soln, acetone soln and deionized water is utilized to carry out ultrasonic cleaning to polyethylene terephthalate (PET) substrate, dry after cleaning, adopt oxygen plasma treatment substrate surface;
(2) take thermofixation resilient material platinum catalysis silica gel (Ecoflex) and foam material toluene sulfonyl hydrazide respectively, and both mixed, blending ratio is 10:3;
(3) will be positioned over PET film on smooth base plate, the pad that PET film both sides rational height is consistent, mixed uniformly thermofixation resilient material and foam material are fallen in this PET film;
(4) another PET film is covered on mixing material, with glass stick or metal bar in uppermost PET film surface scrolls or promotion, make mixing material be uniformly distributed between two-layer PET film;
(5) cover in the PET film on top with the cover plate of surfacing, relative position between fixed base plate and cover plate and height, and heat in its global transfer to warm table, in heat-processed, foam material produces gas simultaneously with the solidification of thermofixation resilient material, film forming vesicular structure;
(6), after thermofixation resilient material solidifies completely, remove base plate, cover plate and two PET film, obtain required porous elastic film.
Claims (4)
1. a porous elastic film, is characterized in that, described poroelasticity film is vesicular structure, through be heating and curing after is formed after being mixed by thermofixation resilient material and foam material.
2. porous elastic film according to claim 1, is characterized in that, described thermofixation resilient material is polydimethylsiloxane, urethane or platinum catalysis silica gel.
3. porous elastic film according to claim 1, is characterized in that, described foam material is Diisopropyl azodicarboxylate, 2,2'-Azobis(2,4-dimethylvaleronitrile), toluene sulfonyl hydrazide, bis oxide rib, sodium carbonate, sodium bicarbonate or bicarbonate of ammonia.
4. a preparation method for porous elastic film according to claim 1, is characterized in that, comprise the following steps:
1) ethanolic soln, acetone soln and the deionized water substrate to polyethylene terephthalate (PET) is utilized to carry out ultrasonic cleaning, dry after cleaning, adopt oxygen plasma or UV/ozone process substrate surface;
2) take thermofixation resilient material and foam material respectively and both mixed, blending ratio is 10:1-10:3;
3) PET film is positioned on smooth base plate, the pad that the both sides rational height of this PET film is consistent, mixed uniformly thermofixation resilient material and foam material are poured in this PET film;
4) another PET film is covered on mixing material, with PET film surface scrolls on top of glass stick or metal bar or promotion, make mixing material be uniformly distributed between two-layer PET film;
5) cover in the PET film on top with the cover plate of surfacing, relative position between fixed base plate and cover plate and height, then heat in its global transfer to warm table, in heat-processed, foam material produces gas simultaneously with the solidification of thermofixation resilient material, forms vesicular structure;
6), after thermofixation resilient material solidifies completely, remove base plate, cover plate and two PET film, obtain required porous elastic film.
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| CN201510434110.3A CN105001644A (en) | 2015-07-22 | 2015-07-22 | Porous elastic film and preparation method thereof |
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| CN201510434110.3A CN105001644A (en) | 2015-07-22 | 2015-07-22 | Porous elastic film and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255280A (en) * | 2020-10-09 | 2021-01-22 | 海南大学 | Preparation method of flexible and air-permeable sensor |
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| US20050004245A1 (en) * | 2003-07-03 | 2005-01-06 | Glen Hamrick | Polyurethane coating process and padding |
| CN102093718A (en) * | 2010-11-19 | 2011-06-15 | 四川大学 | Method for preparing silicone rubber foam material with low density and high opening rate |
| CN102220003A (en) * | 2010-04-15 | 2011-10-19 | 罗华兴 | Composition for producing foaming silica gel plate and production method of foaming silica gel plate |
| CN102690519A (en) * | 2012-06-19 | 2012-09-26 | 西华大学 | Continuous silicon rubber foam plate with low compression stress relaxation and preparation method of continuous silicon rubber foam plate |
| CN104210198A (en) * | 2013-05-29 | 2014-12-17 | 日本发条株式会社 | Urethane foam sheet, cushion material, and method for producing urethane foam sheet |
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- 2015-07-22 CN CN201510434110.3A patent/CN105001644A/en active Pending
Patent Citations (5)
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| US20050004245A1 (en) * | 2003-07-03 | 2005-01-06 | Glen Hamrick | Polyurethane coating process and padding |
| CN102220003A (en) * | 2010-04-15 | 2011-10-19 | 罗华兴 | Composition for producing foaming silica gel plate and production method of foaming silica gel plate |
| CN102093718A (en) * | 2010-11-19 | 2011-06-15 | 四川大学 | Method for preparing silicone rubber foam material with low density and high opening rate |
| CN102690519A (en) * | 2012-06-19 | 2012-09-26 | 西华大学 | Continuous silicon rubber foam plate with low compression stress relaxation and preparation method of continuous silicon rubber foam plate |
| CN104210198A (en) * | 2013-05-29 | 2014-12-17 | 日本发条株式会社 | Urethane foam sheet, cushion material, and method for producing urethane foam sheet |
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| 于军胜: "《OLED显示基础及产业化》", 28 February 2015, 电子科技大学出版社 * |
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Cited By (1)
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| CN112255280A (en) * | 2020-10-09 | 2021-01-22 | 海南大学 | Preparation method of flexible and air-permeable sensor |
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Application publication date: 20151028 |