CN115071237A - Composite membrane and preparation method thereof - Google Patents
Composite membrane and preparation method thereof Download PDFInfo
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- CN115071237A CN115071237A CN202210794696.4A CN202210794696A CN115071237A CN 115071237 A CN115071237 A CN 115071237A CN 202210794696 A CN202210794696 A CN 202210794696A CN 115071237 A CN115071237 A CN 115071237A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/56—Damping, energy absorption
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Abstract
The invention provides a composite membrane and a preparation method thereof by placing a middle layer of shear thickening fluid between two layers of polymer membranes. The composite film of the present invention has a sandwich structure, which not only maintains the characteristics of modulus, strength, flexibility, etc. of the polymer film itself, but also absorbs impact or vibration energy, and thus has excellent toughness.
Description
Technical Field
The invention belongs to the technical field of polymer films, and particularly relates to a composite film and a preparation method thereof.
Background
Polymer films have been widely used in the fields of electronic components, acoustic elements, sports equipment, and packaging protection.
In recent years, with the rise of wearable devices, miniaturization of electronic components, acoustic elements, sports equipment, packaging protection, and the like has been advanced, and higher requirements for the properties of polymer films have been made.
The polymer film has the advantages of high strength, good flexibility, light weight and the like, but the polymer film is lack of the performance of absorbing impact or vibration energy.
Therefore, there is a need in the art for a polymeric membrane having the ability to absorb impact or vibration energy.
Disclosure of Invention
By interposing the shear thickening fluid intermediate layer between two polymer films, the present invention provides a composite film having a sandwich structure, which not only maintains the characteristics of modulus, strength, flexibility, etc. of the polymer films themselves, but also absorbs impact or vibration energy, and thus has excellent toughness.
Specifically, the invention provides a composite membrane, which comprises a 1 st polymer membrane, a 2 nd polymer membrane and a shear thickening fluid sandwiched between the 1 st polymer membrane and the 2 nd polymer membrane.
In a preferred embodiment, the composite membrane is composed of a 1 st polymeric membrane, a 2 nd polymeric membrane, and a shear thickening fluid sandwiched between the 1 st polymeric membrane and the 2 nd polymeric membrane.
In the composite film of the present invention, each of the 1 st polymer film and the 2 nd polymer film has a thickness of 5 to 10000 μm, preferably 10 to 5000 μm, more preferably 25 to 1000 μm, and still more preferably 50 to 500 μm.
In the composite film of the present invention, the shear thickening fluid generally has a thickness of 1 to 100000nm, preferably 10 to 10000nm, more preferably 50 to 5000nm, and still more preferably 100 to 1000 nm.
In the composite film of the present invention, the thicknesses of the 1 st polymer film and the 2 nd polymer film may be the same or different, and preferably, the thicknesses of the 1 st polymer film and the 2 nd polymer film are the same.
In the composite film of the present invention, each of the 1 st polymer film and the 2 nd polymer film is a thermoplastic film, a thermosetting film, or a combination of both. In a preferred embodiment, the 1 st polymer film and the 2 nd polymer film are both thermoplastic films, and in another preferred embodiment, the 1 st polymer film and the 2 nd polymer film are both thermosetting films.
In the composite membrane of the present invention, the shear thickening fluid is generally a two-phase suspension system having shear thickening properties, and preferably the shear thickening fluid is selected from the group consisting of silica microspheres/polyethylene glycol 200 shear thickening fluid, montmorillonite/polyethylene glycol 200 shear thickening fluid, and combinations thereof. In a preferred embodiment, the shear thickening fluid is a silica microsphere/polyethylene glycol 200 shear thickening fluid, and in another preferred embodiment, the shear thickening fluid is a montmorillonite/polyethylene glycol 200 shear thickening fluid.
The thermoplastic films useful in the present invention are generally selected from the group consisting of polypropylene films, polycarbonate films, polyethylene terephthalate films, TPU films, TPE films, and combinations thereof.
The thermoset film useful in the present invention is generally selected from the group consisting of rubber films, epoxy films, polyurethane films, and combinations thereof.
In another aspect, the present invention also provides a method for preparing the composite film of the present invention, the method comprising the steps of:
1) diluting and dispersing the shear thickening liquid by using a volatile organic solvent, and coating the shear thickening liquid on a No. 1 high polymer film;
2) and after the volatile organic solvent is completely volatilized, placing the 2 nd high polymer film on the surface of the shear thickening liquid, and then carrying out hot pressing or curing to obtain the composite film.
According to the method of the present invention, in step 1), the shear thickening fluid may be applied to the 1 st polymeric membrane one or more times, the greater the number of applications, the thicker the shear thickening fluid.
Any volatile organic solvent commonly used in the art may be employed in the present invention, including but not limited to ethanol.
In a preferred embodiment of the method of the present invention, the 1 st polymer film and the 2 nd polymer film are both thermoplastic films, and the composite film is obtained by heat-pressing in step 2).
The hot pressing method adopted by the method of the invention includes but is not limited to flat plate hot pressing, hot rolling and the like.
In another preferred embodiment of the method of the present invention, the 1 st polymer film and the 2 nd polymer film are both thermosetting films, and the composite film is obtained by curing in step 2).
According to the method of the present invention, when the 1 st polymer film and the 2 nd polymer film are both thermosetting films, it is preferable to perform the following steps:
a) preparing a 1 st polymer film;
b) curing the 1 st polymer film to a certain degree, namely forming a cross-linked network;
c) coating the shear thickening fluid diluted and dispersed by the volatile organic solvent on the No. 1 polymer film which just forms the cross-linked network;
d) allowing the volatile organic solvent to evaporate completely;
e) preparing a 2 nd high molecular film on the surface of the shear thickening liquid in situ, and curing to obtain the composite film.
The curing method used in the method of the present invention includes, but is not limited to, thermal curing, ultraviolet curing, and the like.
The composite film provided by the invention not only can keep the characteristics of modulus, strength, flexibility and the like of a polymer film, but also has toughness due to the capability of absorbing impact or vibration energy, and after the composite film is applied to electronic components, acoustic elements, sports equipment and packaging protection, the original functions of the composite film can be kept, the effects of shock absorption and shock resistance can be achieved due to the toughness, and the quality of corresponding products is improved.
These and other objects, aspects and advantages of the present disclosure will become apparent from the following description of the present disclosure when taken in conjunction with the accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of a composite membrane of the present invention, wherein the following reference numerals are used:
1' -the 1 st polymeric membrane; 2-shearing the thickening fluid; 1-2 nd polymeric membrane.
FIG. 2 is a schematic diagram of the viscosity of the shear thickening fluid of the intermediate layer of the composite membrane according to the present invention as a function of shear stress.
Detailed Description
The composite membrane comprises the shear thickening fluid intermediate layer, the shear thickening fluid is subjected to shear rate scanning under a steady state by a rheometer, a schematic diagram of a shear rate-viscosity curve is shown in fig. 2, and as can be seen from fig. 2, after shear stress applied to the shear thickening fluid reaches a certain degree, the viscosity of the shear thickening fluid is rapidly increased, and a large amount of energy is absorbed. Therefore, the shear thickening fluid intermediate layer can endow the polymer membrane with the performance of absorbing impact or vibration energy, so that the composite membrane has good impact toughness.
The following is further illustrated by the following examples, it being understood that the specific examples described herein are intended to be illustrative of the invention only and are not intended to be limiting.
Examples
Materials, reagents and the like used in the following examples were commercially available.
Example 1
Taking a proper amount of the silicon dioxide microsphere/polyethylene glycol 200 shear thickening liquid, diluting and dispersing with a small amount of ethanol to ensure that the shear thickening liquid has certain fluidity.
Uniformly coating a certain amount of shear thickening liquid dispersion liquid on a polypropylene film with the thickness of 100 mu m, and obtaining the polypropylene film coated with the shear thickening liquid with the thickness of 500nm on the surface after ethanol is volatilized.
And covering another polypropylene film with the thickness of 100 mu m on the shear thickening liquid, and then carrying out flat plate hot press molding to obtain the polypropylene composite film containing the shear thickening liquid intermediate layer.
Example 2
Taking a proper amount of the silicon dioxide microsphere/polyethylene glycol 200 shear thickening liquid, and diluting and dispersing the shear thickening liquid by using a small amount of ethanol to ensure that the shear thickening liquid has certain fluidity.
Uniformly coating a certain amount of shear thickening liquid dispersion liquid on a PET film with the thickness of 150 mu m, and obtaining the PET film coated with the shear thickening liquid with the thickness of 500nm on the surface after ethanol is volatilized.
And covering another PET film with the thickness of 150 mu m on the shear thickening liquid, and then carrying out flat plate hot press molding to obtain the PET composite film containing the shear thickening liquid intermediate layer.
Example 3
Taking a proper amount of the silicon dioxide microsphere/polyethylene glycol 200 shear thickening liquid, diluting and dispersing with a small amount of ethanol to ensure that the shear thickening liquid has certain fluidity.
Uniformly coating a certain amount of shear thickening liquid dispersion liquid on a polypropylene film with the thickness of 50 mu m, and obtaining the polypropylene film coated with the shear thickening liquid with the thickness of 100nm on the surface after ethanol is volatilized.
And covering another polypropylene film with the thickness of 50 mu m on the shear thickening liquid, and then carrying out hot roll forming to obtain the polypropylene composite film containing the shear thickening liquid intermediate layer.
Example 4
Taking a proper amount of montmorillonite/polyethylene glycol 200 shear thickening liquid, diluting and dispersing with a small amount of ethanol to ensure that the shear thickening liquid has certain fluidity.
Uniformly coating a certain amount of shear thickening liquid dispersion liquid on a polypropylene film with the thickness of 100 mu m, and obtaining the polypropylene film coated with the shear thickening liquid with the thickness of 500nm on the surface after ethanol is volatilized.
And covering another polypropylene film with the thickness of 100 mu m on the shear thickening liquid, and then carrying out hot roll forming to obtain the polypropylene composite film containing the shear thickening liquid intermediate layer.
Example 5
Taking a proper amount of the silicon dioxide microsphere/polyethylene glycol 200 shear thickening liquid, diluting and dispersing with a small amount of ethanol to ensure that the shear thickening liquid has certain fluidity.
Uniformly coating a certain amount of shear thickening liquid dispersion liquid on a TPU elastic membrane with the thickness of 200 mu m, and obtaining the TPU elastic membrane coated with the shear thickening liquid with the thickness of 800nm on the surface after ethanol volatilizes.
And covering another TPU elastic film with the thickness of 200 mu m on the shear thickening liquid, and then carrying out hot roll forming to obtain the TPU composite film containing the shear thickening liquid intermediate layer.
Example 6
Taking a proper amount of the silicon dioxide microsphere/polyethylene glycol 200 shear thickening liquid, and diluting and dispersing the shear thickening liquid by using a small amount of ethanol to ensure that the shear thickening liquid has certain fluidity.
Uniformly coating a certain amount of shear thickening liquid dispersion liquid on an SBS elastic membrane with the thickness of 300 mu m, and obtaining the SBS elastic membrane coated with the shear thickening liquid with the thickness of 800nm on the surface after the ethanol is volatilized.
And covering another SBS elastic film with the thickness of 300 microns on the shear thickening liquid, and then carrying out hot roll forming to obtain the SBS composite film containing the shear thickening liquid intermediate layer.
Example 7
PPG400, triethanolamine and IPDI are mixed according to the mass ratio of 4:1.5:5.5 to obtain a mixed solution, and the mixed solution is cast into a film and heated to be cured to obtain a polyurethane film with the thickness of 100 microns.
Taking a proper amount of the silicon dioxide microspheres/polyethylene glycol 200 shear thickening liquid, diluting and dispersing with a certain amount of ethanol to ensure that the shear thickening liquid has certain fluidity.
After the polyurethane film just forms a cross-linked network, uniformly coating a certain amount of shear thickening liquid dispersion liquid on the polyurethane film, and volatilizing ethanol to obtain the thermosetting polyurethane film coated with the shear thickening liquid with the thickness of 500nm on the surface.
And coating the same amount of the PPG400, triethanolamine and IPDI mixed solution on the surface of the shear thickening liquid, and continuously heating and curing to obtain the polyurethane composite film containing the shear thickening liquid middle layer, wherein the thickness of the polyurethane composite film is about 200 mu m.
Example 8
Mixing the acrylate and the ultraviolet curing agent 184 according to the mass ratio of 100:1 to obtain a mixed solution, casting the mixed solution into a film, and then carrying out ultraviolet curing to obtain the ultraviolet curing acrylate film with the thickness of 100 microns.
Taking a proper amount of the silicon dioxide microspheres/polyethylene glycol 200 shear thickening liquid, diluting and dispersing with a small amount of ethanol to ensure that the shear thickening liquid has certain fluidity.
And after the acrylate membrane just forms a cross-linked network, uniformly coating a certain amount of shear thickening liquid dispersion liquid on the acrylate membrane, and volatilizing ethanol to obtain the ultraviolet curing acrylate membrane coated with the shear thickening liquid with the thickness of 500nm on the surface.
And then coating the same amount of the mixed solution of the acrylate and the ultraviolet curing agent 184 on the surface of the shear thickening liquid, and continuing ultraviolet light curing to obtain the acrylate composite membrane containing the shear thickening liquid middle layer, wherein the thickness of the acrylate composite membrane is about 200 mu m.
Comparative example 1
Two polypropylene films, which were the same as those in example 1 above, were stacked one on the other and then subjected to flat plate hot press molding to obtain a polypropylene composite film containing no shear-thickening fluid intermediate layer.
Comparative example 2
Two sheets of the same PET film as in example 2 were stacked one on the other, and then subjected to flat plate hot press molding to obtain a PET composite film containing no shear thickening fluid intermediate layer.
Comparative example 3
Two polypropylene films, which were the same as those in example 3, were stacked one on the other and then subjected to hot roll forming to obtain a polypropylene composite film containing no intermediate layer of the shear thickening fluid.
Comparative example 4
Two polypropylene films, which were the same as those in example 4, were stacked one on the other, and then subjected to hot roll forming to obtain a polypropylene composite film containing no intermediate layer of a shear thickening fluid.
Comparative example 5
Two sheets of the same TPU elastic film as in example 5 above were stacked one on the other and then subjected to hot roll forming to obtain a TPU composite film containing no shear thickening fluid intermediate layer.
Comparative example 6
Two SBS elastic films identical to those in example 6 were stacked one on the other and then subjected to hot roll forming to obtain an SBS composite film containing no shear thickening fluid interlayer.
Comparative example 7
PPG400, triethanolamine and IPDI are mixed according to the mass ratio of 4:1.5:5.5 to obtain a mixed solution, and the mixed solution is cast into a film and heated to be cured to obtain a polyurethane film with the thickness of 100 microns.
Immediately after the polyurethane film forms a crosslinked network, the same amount of the mixture of PPG400, triethanolamine and IPDI is applied to the surface of the polyurethane film.
And continuously heating and curing to obtain the polyurethane composite film without the shear thickening fluid intermediate layer.
Comparative example 8
Mixing the acrylate and the ultraviolet curing agent 184 according to the mass ratio of 100:1 to obtain a mixed solution, casting the mixed solution into a film, and then carrying out ultraviolet curing to obtain the ultraviolet curing acrylate film with the thickness of 100 microns.
And after the acrylic ester film just forms a cross-linked network, coating the same amount of the mixed solution of the acrylic ester and the ultraviolet curing agent 184 on the surface of the acrylic ester film, and continuing ultraviolet light curing to obtain the acrylic ester composite film without the shear thickening fluid intermediate layer.
Tensile Property test
The tensile modulus of the composite films of examples 1-8 and comparative examples 1-8, respectively, was tested according to the assay method of GB/T1040.3-2006, and the results of the experiments are shown in Table 1 below.
Toughness testing
The toughness of the composite membranes of examples 1-8 and comparative examples 1-8, respectively, were tested according to the test method of GB8809-88, and the results are shown in Table 1 below.
TABLE 1 tensile modulus and toughness test data for composite films prepared in examples and comparative examples
As can be seen from table 1, the toughness of the composite film of the present invention is significantly improved while maintaining the modulus of the polymeric film itself, wherein the toughness of the composite film of example 1 is improved by about 70% relative to that of comparative example 1; the toughness of the composite membrane of example 2 is improved by about 51% relative to that of comparative example 2; the toughness of the composite membrane of example 3 was improved by about 55% relative to comparative example 3; compared with comparative example 4, the toughness of the composite film of example 4 is improved by 76%; the toughness of the composite membrane of example 5 was improved by about 53% relative to comparative example 5; the toughness of the composite membrane of example 6 is improved by about 42% relative to that of comparative example 6; the toughness of the composite membrane of example 7 was improved by about 78% relative to comparative example 7; the toughness of the composite film of example 8 was improved by about 70% relative to comparative example 8.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A composite membrane comprising a 1 st polymeric membrane, a 2 nd polymeric membrane, and a shear thickening fluid sandwiched between the 1 st polymeric membrane and the 2 nd polymeric membrane.
2. The composite membrane of claim 1, wherein the composite membrane is comprised of a 1 st polymeric membrane, a 2 nd polymeric membrane, and a shear thickening fluid sandwiched between the 1 st polymeric membrane and the 2 nd polymeric membrane.
3. The composite film according to claim 1 or 2, wherein the 1 st polymer film and the 2 nd polymer film each have a thickness of 5 to 10000 μm, the shear thickening fluid has a thickness of 1 to 100000nm, and
the thickness of the 1 st polymer film is the same as or different from that of the 2 nd polymer film.
4. The composite membrane of claim 3 wherein the 1 st polymeric membrane and the 2 nd polymeric membrane are each a thermoplastic membrane, a thermoset membrane, or a combination of both, and the shear thickening fluid is a two-phase suspension having shear thickening properties.
5. The composite film of claim 4 wherein said 1 st polymeric film and said 2 nd polymeric film are both thermoplastic films.
6. The composite film of claim 4 wherein the 1 st and 2 nd polymeric films are both thermoset films.
7. The composite film of claim 4 wherein said thermoplastic film is selected from the group consisting of polypropylene film, polycarbonate film, polyethylene terephthalate film, TPU film, TPE film, and combinations thereof, and wherein said thermoset film is selected from the group consisting of rubber film, epoxy film, polyurethane film, and combinations thereof.
8. The composite membrane of claim 4 wherein the shear thickening fluid is selected from the group consisting of silica microspheres/polyethylene glycol 200 shear thickening fluid, montmorillonite/polyethylene glycol 200 shear thickening fluid, and combinations thereof.
9. A method of making the composite membrane of claim 1, the method comprising the steps of:
1) diluting and dispersing the shear thickening liquid by using a volatile organic solvent, and coating the shear thickening liquid on a No. 1 high polymer film;
2) and after the volatile organic solvent is completely volatilized, placing the 2 nd high polymer film on the surface of the shear thickening liquid, and then carrying out hot pressing or curing to obtain the composite film.
10. The method of claim 9, wherein the volatile organic solvent is ethanol.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871748A (en) * | 2010-04-20 | 2010-10-27 | 深圳航天科技创新研究院 | Soft stab-proof/bulletproof material |
| CN109099769A (en) * | 2017-06-20 | 2018-12-28 | 南京新莱尔材料科技有限公司 | A kind of anti-stab ballistic protective clothing of high-strength light and its manufacturing method |
| CN110103556A (en) * | 2019-05-10 | 2019-08-09 | 山东三达科技发展有限公司 | A kind of flexible ballistic-resistant stab-resistant material and preparation method thereof |
| CN110964481A (en) * | 2019-03-27 | 2020-04-07 | 清华大学 | Shear thickening fluid, preparation method and application thereof, damping part and energy absorption device comprising shear thickening fluid |
| CN113372783A (en) * | 2020-03-09 | 2021-09-10 | 罗门哈斯电子材料有限责任公司 | Optically transparent shear thickening fluid and optical display device comprising same |
| US20210291486A1 (en) * | 2018-07-17 | 2021-09-23 | Stf Technologies, Llc | Impact-resistant, damage tolerant composites with shear thickening fluid layers and uses thereof |
-
2022
- 2022-07-07 CN CN202210794696.4A patent/CN115071237A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871748A (en) * | 2010-04-20 | 2010-10-27 | 深圳航天科技创新研究院 | Soft stab-proof/bulletproof material |
| CN109099769A (en) * | 2017-06-20 | 2018-12-28 | 南京新莱尔材料科技有限公司 | A kind of anti-stab ballistic protective clothing of high-strength light and its manufacturing method |
| US20210291486A1 (en) * | 2018-07-17 | 2021-09-23 | Stf Technologies, Llc | Impact-resistant, damage tolerant composites with shear thickening fluid layers and uses thereof |
| CN110964481A (en) * | 2019-03-27 | 2020-04-07 | 清华大学 | Shear thickening fluid, preparation method and application thereof, damping part and energy absorption device comprising shear thickening fluid |
| CN110103556A (en) * | 2019-05-10 | 2019-08-09 | 山东三达科技发展有限公司 | A kind of flexible ballistic-resistant stab-resistant material and preparation method thereof |
| CN113372783A (en) * | 2020-03-09 | 2021-09-10 | 罗门哈斯电子材料有限责任公司 | Optically transparent shear thickening fluid and optical display device comprising same |
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