CN115637584A - Puncture-resistant flexible nano composite material and preparation method thereof - Google Patents
Puncture-resistant flexible nano composite material and preparation method thereof Download PDFInfo
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- CN115637584A CN115637584A CN202211200410.1A CN202211200410A CN115637584A CN 115637584 A CN115637584 A CN 115637584A CN 202211200410 A CN202211200410 A CN 202211200410A CN 115637584 A CN115637584 A CN 115637584A
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- 239000002114 nanocomposite Substances 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000012530 fluid Substances 0.000 claims abstract description 49
- 230000008719 thickening Effects 0.000 claims abstract description 30
- 239000011159 matrix material Substances 0.000 claims abstract description 19
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims abstract description 12
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims abstract description 12
- 239000002904 solvent Substances 0.000 claims abstract description 11
- 238000013329 compounding Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 238000007865 diluting Methods 0.000 claims description 5
- 239000003085 diluting agent Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002105 nanoparticle Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002356 single layer Substances 0.000 abstract description 5
- 238000009940 knitting Methods 0.000 abstract description 2
- 231100000252 nontoxic Toxicity 0.000 abstract description 2
- 230000003000 nontoxic effect Effects 0.000 abstract description 2
- 239000004744 fabric Substances 0.000 description 32
- 230000000052 comparative effect Effects 0.000 description 23
- 238000002347 injection Methods 0.000 description 12
- 239000007924 injection Substances 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 238000010790 dilution Methods 0.000 description 6
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- 238000012360 testing method Methods 0.000 description 6
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- 230000035515 penetration Effects 0.000 description 5
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- 239000004745 nonwoven fabric Substances 0.000 description 4
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
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- 239000000377 silicon dioxide Substances 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
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- 238000005520 cutting process Methods 0.000 description 1
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- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 238000010417 needlework Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
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- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 210000004304 subcutaneous tissue Anatomy 0.000 description 1
- 238000009965 tatting Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/53—Polyethers
Abstract
The invention discloses a puncture-resistant flexible nano composite material and a preparation method thereof, the composite material is prepared by compounding a weft knitting matrix with shear thickening fluid, the tightness degree of the matrix is 14-49.5, the matrix is made of ultra-high molecular weight polyethylene, the yarn count is 200D-600D, the transverse density of the matrix is 18-30 wale/inch, and the longitudinal density is 30-43 wale/inch. Preferably, the yarn count is 300D-590D, the matrix cross direction density is 23-30 wales/inch, and the machine direction density is 30-40 wales/inch. The composite material can effectively resist the puncture of a needle, has good flexibility, does not influence the fine operation of the hand of a user, and can achieve the ideal effect of resisting the puncture of the needle by a single-layer material. The invention has simple preparation process and can be produced in mass. The preparation process uses green solvent and material, and is non-toxic.
Description
Technical Field
The invention relates to a puncture-resistant flexible nano composite material and a preparation method thereof.
Background
Hypodermic needles are a common medical tool for delivering drugs or blood into a living body. The needle has sharp point and small diameter (about 400-700 μm), and can easily penetrate skin and be inserted into subcutaneous tissue to cause infection. Therefore, a glove that can prevent the injection needle is very important for the health and safety of medical staff.
The existing puncture-proof and cutting-proof gloves are generally made of knitted fabrics of polyethylene, glass fiber, carbon fiber and aramid fiber, and have millimeter-sized or even centimeter-sized pores, and an injection needle can directly puncture the knitted fabrics from the pores without touching the knitted fabrics. Other materials (such as hard ceramics, glass, metal sheets and the like) have no pores and are dense, can effectively resist needle puncture, but are not flexible and cannot be made into gloves. In addition, materials that have stab and cut resistant capabilities do not necessarily provide protection against needles. Puncture resistance generally refers to the ability to resist penetration by a 1-5mm diameter cone of the EN388-2016 standard, whereas the diameter of a needle is generally 400-700 μm, much smaller than the EN388-2016 standard; cutting-prevention generally refers to the fact that the knife edge is prevented from being scratched parallel to the material surface, which is a different principle than the puncturing by an injection needle and therefore cannot be confused with other.
The only material that can resist the puncture of the injection needle to a certain extent at present is TurtleSkin
And SuperFabric
Respectively, disclosed in US5837623 and WO2012/024532 A1. TurtleSkin
And (3) adopting superfine aramid yarn (less than or equal to 200D) to obtain the high-density plain-woven fabric through tatting and calendaring. The porosity among the yarns of the fabric is extremely low, and the injection needle can contact the yarns with a high probability when being penetrated, so that a certain effect of resisting needle puncture is achieved.
SuperFabric
Dense hexagonal ceramic particles are adhered to the nylon non-woven fabric, and the needles can be punctured on the ceramic particles with high probability when being punctured, so that a certain needle-preventing effect is achieved. Although the two materials are ingenious in design, the single-layer needle-proof capability is not strong, and a good needle-proof effect can be achieved only in a multi-layer overlapping mode. However, the material after multi-layer lamination loses flexibility and cannot meet the requirement of fine operation of hands of medical staff during work. Therefore, it is required toThe single-layer material has high needle puncture resistance and excellent flexibility, and meets the related requirements of medical care personnel.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a puncture-resistant flexible nano composite material capable of effectively preventing puncture of an injection needle.
The invention also aims to provide a preparation method of the composite material.
The purpose of the invention is realized by the following technical scheme:
a puncture-resistant flexible nanocomposite is characterized by being formed by compounding a weft-knitted matrix with shear thickening fluid, wherein the tightness of the matrix is 14-49.5.
The tightness of the base body of the present invention is 14 to 23, and the tightness of the weft knitted fabric, i.e., the underfill coefficient, is generally expressed by the ratio of the stitch length to the yarn diameter of the weft knitted fabric.
The base body is made of ultra-high molecular weight polyethylene, the yarn count is 200D-600D, the transverse density of the base body is 18-30 wales/inch, and the longitudinal density is 30-43 wales/inch. Preferably, the yarn count is 300D-590D, the matrix cross direction density is 23-30 wales/inch, and the machine direction density is 30-40 wales/inch.
The shear thickening fluid content of the composite material is 7-111wt%, preferably 10-65wt%.
The shear thickening fluid of the present invention is comprised of nanoparticles and a solvent at a concentration of 0.5 to 0.55, preferably at a concentration of 0.52 to 0.55.
The nano particles are nano silicon dioxide spheres, and the solvent is polyethylene glycol with the relative molecular mass of 200.
The preparation method of the puncture-resistant flexible nano composite material is characterized by comprising the following steps:
diluting and uniformly mixing the shear thickening fluid with a volatile diluent according to a certain mass ratio, soaking the matrix in the mixture to be fully wetted, then extruding to remove redundant liquid, and drying to obtain the flexible nano composite material.
The dilution solvent is 95% ethanol water solution, and the mass ratio of the dilution solvent is 1:1, diluting and uniformly mixing, removing redundant liquid from the soaked matrix through a pressure roller, wherein the pressure between the rollers is 0.1-0.4MPa.
Compared with the prior art, the invention has the following advantages:
the composite material can effectively resist the puncture of a needle, has good flexibility, does not influence the fine operation of hands of a user, and can achieve the ideal effect of resisting the puncture of the needle by a single-layer material.
The invention has simple preparation process and can be produced in mass. The preparation process uses green solvent and material, and is non-toxic.
Detailed Description
A puncture-resistant flexible nano composite material is prepared by compounding a weft knitted fabric substrate with the tightness degree of 14-49.5 with shear thickening fluid, wherein the substrate is made of ultra-high molecular weight polyethylene, the yarn count is 200D-600D, the transverse density of the substrate is 18-30 longitudinal lines/inch, the longitudinal density is 30-43 transverse lines/inch, and the concentration of the shear thickening fluid is 0.5-0.55, and the preparation method of the composite material comprises the following steps:
mixing the shear thickening fluid with a 95% ethanol water solution according to a mass ratio of 1:1, diluting and uniformly mixing, soaking the matrix in the diluted shear thickening fluid to fully wet the matrix by the fluid, then extruding to remove redundant liquid, and volatilizing an ethanol aqueous solution in an oven to obtain the flexible nano composite material.
The present invention will be further described in detail with reference to the following specific examples:
example 1:
monodisperse silica spheres with the particle size of 520nm +/-55 nm are dispersed in polyethylene glycol with the relative molecular mass of 200 to prepare a shear thickening fluid with the volume fraction of the silica spheres of 0.52, and the shear thickening fluid and an aqueous solution of ethanol (the mass ratio of ethanol to water is 95: 1, mixing, and carrying out vortex oscillation for 5 hours to obtain uniform and milky diluted shear thickening flow;
400D, density 24 x 38 pieces/inch, 350g/m 2 The high molecular weight polyethylene (UHMWPE) weft knitted fabric is soaked in diluted fluid for at least 1min, after the knitted fabric is fully wetted by the fluid, redundant liquid is removed under the condition that the pressure between rollers is 0.2MPa through a rubber pressure roller, the rolled fabric is put into an oven, and the oven is dried at 105 ℃ for 15min to volatilize ethanol water solution, so that the flexible nano composite material containing the shear thickening fluid is prepared.
Comparative example 1:
400D, 24 x 38 pieces/inch density, 350g/m 2 The high molecular weight polyethylene weft knitted fabric of (2) is not treated with a shear thickening fluid.
Comparative example 2:
TurtleSkin
the aramid fiber plain-woven fabric has warp and weft yarn density of 90 × 90 yarns/inch and yarn density of 200D.
Comparative example 3:
SuperFabric
the non-woven fabric is composed of a nylon non-woven fabric and hexagonal ceramic particles, and the ceramic particles and the non-woven fabric are bonded through polyurethane glue.
Comparative example 4:
the 3M anti-cutting gloves are made of glass fibers, high-molecular-weight polyethylene filaments and carbon fibers through mixed knitting, and a layer of butadiene-acrylonitrile rubber resin with the thickness of about 2mm is coated on the surfaces of the gloves.
The hypodermic needle penetration resistance of example 1, comparative examples 1-4 was tested in a universal materials testing machine according to standard ASTM F2878-2010. A sample of the flexible nanocomposite containing the shear thickening fluid, cut to 5cm x 5cm, was clamped on a sample stage of a universal material testing machine, a 25G hypodermic needle was connected to a sensor with a measuring range of 100N and a precision of 0.001N, and was penetrated perpendicularly at a uniform speed of 500mm/min at 90 ° to the plane of the sample. The sensor can sense the stress change condition of the needle in the puncturing process and output a relation curve of the stress and the needle displacement on a computer. The maximum force of the curve was recorded and identified as the force required for the needle to penetrate the material completely, as per the requirements of the ASTM F2878-2010 standard, with the results of the test shown in table 1.
Table 1: capability of different materials for preventing 25G injection needle from puncturing
As can be seen from Table 1, the composite shear thickening fluid was able to increase the anti-needlework performance of a single layer UHMWPE weft knit fabric from 0.697N to 3.220N, i.e. 4.6 times. From example 1, comparative examples 2-4 test results can be found: compared with the materials used by the existing protective gloves, the needle-proof capability of the flexible nano composite material is enhanced by at least 14 percent, thereby achieving better needle-proof effect.
Example 2:
the specification is 590D, the density is 24 x 30 pieces/inch, and the gram weight is 520g/m 2 The UHMWPE weft knit fabric of (1) was treated according to the method of example 1 to obtain a flexible nanocomposite.
Example 3:
the specification is 400D, the density is 23 x 36/inch, and the gram weight is 430g/m 2 The UHMWPE weft knit fabric of (1) was treated as in example 1 to obtain a flexible nanocomposite.
Example 4:
the specification is 300D, the density is 29 x 36 pieces/inch, and the gram weight is 550g/m 2 The UHMWPE weft knit fabric of (1) was treated according to the method of example 1 to obtain a flexible nanocomposite.
Comparative example 5:
the selection specification is 400D, the density is 18 x 38 pieces/inch, and the gram weight is 450g/m 2 The UHMWPE weft knit fabric of (1) was treated according to the method of example 1 to obtain a flexible nanocomposite.
Comparative example 6:
the selected specification is 300D, the density is 23 x 36/inch, and the gram weight is 450g/m 2 And a flexible nanocomposite was obtained after treatment according to the method of example 1.
Comparative example 7:
the selection specification was 200D, the density 23 x 43 pieces/inch, and the gram weight 410g/m 2 And a flexible nanocomposite was obtained after treatment according to the method of example 1.
The tightness (i.e., the underfill coefficient) is generally expressed in terms of the ratio of the stitch length to the yarn diameter of a weft knitted fabric. Weft knitted fabrics of different tightness degrees are selected, tightness degrees of the selected weft knitted fabrics obtained by measurement and calculation are shown in table 2, and the injection needle prevention ability of examples 1 to 4 and comparative examples 2, 5, 6 and 7 is tested according to the method of ASTM F2878-2010, and the results are shown in table 2.
TABLE 2 needling resistance of materials of different tightness
| Sample (I) | Degree of tightness | Needle head before treatment (N) | Needle head after treatment (N) |
| Example 1 | 14.83 | 0.697 | 3.220 |
| Example 2 | 15.96 | 2.131 | 3.130 |
| Example 3 | 16.84 | 0.630 | 2.882 |
| Example 4 | 22.17 | 0.659 | 3.173 |
| Comparative example 5 | 32.60 | 0.724 | 1.610 |
| Comparative example 6 | 43.16 | 0.563 | 1.520 |
| Comparative example 7 | 49.12 | 0.784 | 1.524 |
| Comparative example 2 | - | 2.826 | - |
The test data of examples 1-4 and comparative examples 5-7 show that the injection needle puncture resistance of UHMWPE weft-knitted fabrics of different specifications is greatly improved after the UHMWPE weft-knitted fabrics are compounded with the shear thickening fluid, and the increase is basically more than 1 time.
The test data for comparative examples 1-4 and comparative example 2 show that when the fabric is between 14 and 23 tight, the process is repeatedThe anti-needle capability of the flexible nano composite material after the shear thickening fluid is combined is higher than that of the existing anti-needle material (Turtleskin) on the market
Aramid plain-woven fabric). The test data of comparative examples 2 and 5-7 show that if the fabric is compacted to a level of 30-50, the composite shear thickening fluid can substantially increase the needle penetration resistance of the fabric, but the needle resistance of the composite material is not comparable to that of the existing Turtleskin
And (4) a comparable effect.
The needle-proof ability of flexible nanocomposites of the same fluid concentration, the same fabric, different fluid content was tested.
Example 5:
a weft knitted fabric made of high molecular weight polyethylene filaments with a tightness degree of 14.83 of 400D was selected, and a flexible nanocomposite was prepared by the method of example 1 with a pressure of 0.4MPa between the rolls during rolling.
Example 6:
the same procedure as in example 5 was repeated except that the pressure between the rolls was 0.35MPa, to prepare a flexible nanocomposite.
Example 7:
the same procedure as in example 5 was repeated except that the pressure between the rolls was 0.30MPa, thereby preparing a flexible nanocomposite.
Example 8:
the same procedure as in example 5 was repeated except that the pressure between the rolls was 0.20MPa, thereby preparing a flexible nanocomposite.
Example 9:
the same procedure as in example 5 was repeated except that the pressure between the rolls was 0.15MPa, to prepare a flexible nanocomposite.
Example 10:
the same procedure as in example 5 was repeated except that the pressure between the rolls was 0.10MPa, to prepare a flexible nanocomposite.
Example 11:
similar to the method and matrix of example 5, the knitted fabric was impregnated with the diluted shear thickening fluid without passing through a roller and directly dried to prepare a flexible nanocomposite.
The fluid contents of the flexible nanocomposites prepared in examples 5 to 11 are shown in Table 3, and the needle-shielding ability of the flexible nanocomposites was measured according to the method of ASTM F2878-2010 and the results are shown in Table 3.
Table 3: 25G injection needle puncture resistance of same knitted fabric under different fluid contents
| Sample numbering | Fluid content (wt%) | Puncture ability of injection needle resistance (N) |
| Comparative example 1 | 0 | 0.697 |
| Example 5 | 7.6 | 1.342 |
| Example 6 | 12.9 | 2.473 |
| Example 7 | 26.5 | 2.867 |
| Example 8 | 50.3 | 3.260 |
| Example 9 | 63.3 | 4.004 |
| Example 10 | 89.6 | 3.721 |
| Example 11 | 111 | 3.634 |
As can be seen from Table 3, the needling resistance of the composite material can be increased several times already at a fluid content of < 15 wt.%, which is not comparable to Turtleskin in comparative example 2
And SuperFabric in comparative example 3
Compared with the needle-proof capability. When the fluid content reaches 15-65wt%, the capability of the composite material for resisting the puncture of the injection needle is stably improved along with the increase of the fluid content, and compared with the fabric before the shear thickening fluid treatment, the capability of the treated fabric for resisting the puncture can be improved by 4.5 times at most. The absolute value of the force required to resist needle penetration is 2.867-4.004N, which is much more enhanced than the needle-shielding capability of the prior art materials of comparative examples 2 and 3. When the fluid content is increased to 111wt%, the puncture resistance of the composite material is slightly reduced from 4.004N to 3.634N, which is higher than the needle-proof capability of the existing material, and the fluid content is higher, the puncture resistance is higher, and a certain optimal range is provided.
The needle-proof capability of the same knitted fabric, the same fluid content and different fluid concentrations.
Example 12:
a shear thickening fluid having a volume fraction (concentration) of 0.48 was prepared in the same manner as in example 1, and after dilution, a flexible nanocomposite was prepared in the same manner as in example 1.
Example 13:
a shear thickening fluid having a volume fraction (concentration) of 0.50 was prepared as in example 1, and after dilution, a flexible nanocomposite was prepared as in example 1.
Example 14:
a shear thickening fluid having a volume fraction (concentration) of 0.54 was prepared as in example 1, and after dilution, a flexible nanocomposite was prepared as in example 1.
Example 15:
a shear thickening fluid having a volume fraction (concentration) of 0.55 was prepared in the same manner as in example 1, and after dilution, a flexible nanocomposite was prepared in the same manner as in example 1.
The needle penetration resistance of examples 1, 12-15 and comparative examples 2, 3 were tested as required by ASTM F2878-2010 standard, and the results are shown in Table 4.
Table 4: needle-proof capability of composite material of same fabric and fluid with different concentration
Table 4 the experimental data show that: under the premise of equivalent fluid content, the anti-needle capability is gradually enhanced along with the increase of the fluid concentration, and when the fluid concentration reaches 0.52 and above, the anti-needle capability of the prepared flexible nano composite material is stronger than that of the existing Turtleskin
And SuperFabric
. When the fluid concentration reaches 0.5, the needle-proof capacity reaches 2.064N,belongs to grade 1 of American standard ANSI/ISEA 105-2016 needle puncture resistance grade and has good practical value.
Claims (10)
1. A puncture-resistant flexible nanocomposite is characterized by being formed by compounding a weft-knitted matrix with shear thickening fluid, wherein the tightness of the matrix is 14-49.5.
2. A puncture resistant flexible nanocomposite material according to claim 1, wherein the matrix is compacted to a degree of 14 to 23.
3. The flexible nanocomposite as claimed in claim 1, wherein the matrix is made of ultra high molecular weight polyethylene with a count of 200D to 600D, the matrix has a transverse density of 18 to 30 wales/inch and a longitudinal density of 30 to 43 wales/inch.
4. A puncture resistant flexible nanocomposite according to claim 1, wherein the shear thickening fluid is present in an amount of 7 to 111wt%.
5. A puncture resistant flexible nanocomposite material according to claim 1, wherein the shear thickening fluid is present in an amount of 10 to 65wt%.
6. A puncture resistant flexible nanocomposite material according to claim 1, wherein the shear thickening fluid is comprised of nanoparticles and a solvent in a concentration of 0.5 to 0.55.
7. A puncture resistant flexible nanocomposite material according to claim 6, wherein the nanoparticles are nanosilica spheres and the solvent is polyethylene glycol with a relative molecular mass of 200.
8. A method of making the puncture resistant flexible nanocomposite material of any one of claims 1 to 7, comprising the steps of:
diluting and uniformly mixing the shear thickening fluid with a volatile diluent according to a certain mass ratio, soaking the matrix in the mixture to be fully wetted, then extruding the mixture to remove redundant liquid, and drying the mixture to obtain the flexible nano composite material.
9. The method of claim 8, wherein the diluent solvent is a 95% ethanol aqueous solution, and the weight ratio of the diluent solvent to the solvent is 1:1, diluting and mixing evenly.
10. The method of claim 8, wherein the impregnated substrate is pressed against a pressure roller to remove excess liquid, the pressure between the rollers being between about 0.1 MPa and about 0.4MPa.
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| CN202211200410.1A CN115637584A (en) | 2022-09-29 | 2022-09-29 | Puncture-resistant flexible nano composite material and preparation method thereof |
| PCT/CN2023/115675 WO2024066873A1 (en) | 2022-09-29 | 2023-08-30 | Puncture-resistant flexible nanocomposite material and preparation method therefor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066873A1 (en) * | 2022-09-29 | 2024-04-04 | 中山莱圃新材料有限公司 | Puncture-resistant flexible nanocomposite material and preparation method therefor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330355A (en) * | 2011-06-29 | 2012-01-25 | 深圳航天科技创新研究院 | Fiber fabric composite energy absorbing material and preparation method thereof |
| CN104002522A (en) * | 2014-05-26 | 2014-08-27 | 上海工程技术大学 | Puncture-proof and shock-resisting material |
| CN112900105A (en) * | 2021-01-18 | 2021-06-04 | 河北科技大学 | Flexible protection composite material and manufacturing method thereof |
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| CN103808210B (en) * | 2012-11-15 | 2016-03-02 | 南京理工大学 | A kind of Use of Flexible Protective Materials and preparation method thereof |
| CN110962412A (en) * | 2018-09-27 | 2020-04-07 | 天津工业大学 | Fabric hybrid structure stab-resistant composite material and preparation method thereof |
| CN115637584A (en) * | 2022-09-29 | 2023-01-24 | 中山莱圃新材料有限公司 | Puncture-resistant flexible nano composite material and preparation method thereof |
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2022
- 2022-09-29 CN CN202211200410.1A patent/CN115637584A/en active Pending
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| CN102330355A (en) * | 2011-06-29 | 2012-01-25 | 深圳航天科技创新研究院 | Fiber fabric composite energy absorbing material and preparation method thereof |
| CN104002522A (en) * | 2014-05-26 | 2014-08-27 | 上海工程技术大学 | Puncture-proof and shock-resisting material |
| CN112900105A (en) * | 2021-01-18 | 2021-06-04 | 河北科技大学 | Flexible protection composite material and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066873A1 (en) * | 2022-09-29 | 2024-04-04 | 中山莱圃新材料有限公司 | Puncture-resistant flexible nanocomposite material and preparation method therefor |
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| WO2024066873A1 (en) | 2024-04-04 |
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