CN108035032A - A kind of three dimensional separation machine-knitted structure pressure sensing fabric and preparation method thereof - Google Patents
A kind of three dimensional separation machine-knitted structure pressure sensing fabric and preparation method thereof Download PDFInfo
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- CN108035032A CN108035032A CN201810033462.1A CN201810033462A CN108035032A CN 108035032 A CN108035032 A CN 108035032A CN 201810033462 A CN201810033462 A CN 201810033462A CN 108035032 A CN108035032 A CN 108035032A
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
- D03D1/0088—Fabrics having an electronic function
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D11/00—Double or multi-ply fabrics not otherwise provided for
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
- D03D15/247—Mineral
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D25/00—Woven fabrics not otherwise provided for
- D03D25/005—Three-dimensional woven fabrics
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/10—Inorganic fibres based on non-oxides other than metals
- D10B2101/12—Carbon; Pitch
- D10B2101/122—Nanocarbons
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/06—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated alcohols, e.g. polyvinyl alcohol, or of their acetals or ketals
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/10—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyurethanes
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/063—Load-responsive characteristics high strength
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2403/00—Details of fabric structure established in the fabric forming process
- D10B2403/03—Shape features
- D10B2403/033—Three dimensional fabric, e.g. forming or comprising cavities in or protrusions from the basic planar configuration, or deviations from the cylindrical shape as generally imposed by the fabric forming process
Abstract
The invention discloses a kind of three dimensional separation machine-knitted structure pressure sensing fabric and preparation method thereof.The fabric includes yarn layer and following yarn layer above, above yarn layer bundled and be integrated by alternating yarns with following yarn layer.Preparation method is：Yarn layer, following yarn layer above are weaved using three-dimensional woven weaving process；Carbon nanotubes yarn is woven into yarn layer above along through broadwise, intertexture forms conductive network, i.e. pressure sensing layer；Yarn layer above, following yarn layer are interweaved using alternating yarns and form three dimensional separation sensing fabric.When the fabric face is under pressure, the fabric of spacer structure will produce larger deformation, and the carbon nanotubes yarn deformation in pressure sensing layer causes resistance variations.The fabric has higher sensitivity at low pressures, at elevated pressures with preferable reversibility energy, has extensive use in engineer application and the wearable field of intelligence.
Description
Technical field
The present invention relates to a kind of three dimensional separation machine-knitted structure pressure sensing fabric and preparation method thereof, belong to pressure sensing and knit
Thing technical field.
Background technology
In recent years, as people are continuously increased the demand of the wearable textile of intelligence, sensor technology is grown rapidly, and is spun
Structural pressure sensor is knitted because receiving universal concern with unique advantage.Textile structural sensor have flexibility, gap,
Its larger deformability and certain damage tolerance, allow it conformal with human body surface, and have comfort, applied to can
Dress electronic device.At present, many scholars have studied the wearable electronic device based on textile structural, they can be applied
In fields such as health treatment, environmental monitoring, screen display, human-computer interaction, collection of energy, energy storage, wireless communication exchanges.
The hollow structure of carbon nanotubes makes it have the characteristics of small, light weight, big specific surface area, while it is intrinsic
The combination of electric property and mechanically deform makes them have adaptive and self-induction ability multifunctional material system concurrently as future
It is most preferable alternative.With going deep into for research, carbon nanotubes is applied to sensor field more and more.However, existing research
Carbon nanotube powder and polymer melting are mixed to form film or electrostatic spinning mostly, there are content of carbon nanotubes it is low, point
The problems such as uneven, the degree of orientation is low are dissipated, cause the mechanics of material and sensitivities bad.Carbon nanotubes yarn is received as the carbon of macroscopic view
Mitron aggregate, its filamentary structure and flexible speciality, have become the intelligent textile material of great potential.Carbon nano-tube yarn
Line has the advantages that content of carbon nanotubes height, good dispersion, the degree of orientation are high, inherits the excellent intensity of carbon nanotubes and mould
Amount, and still there is excellent pressure drag performance, suitable for art of pressure sensors.
The content of the invention
The technical problems to be solved by the invention are：Existing content of carbon nanotubes is low, it is scattered it is uneven, the degree of orientation is low asks
Topic.
To solve the above-mentioned problems, the present invention provides a kind of three dimensional separation machine-knitted structure pressure sensing fabric, its feature
Be, including yarn layer and following yarn layer above, above yarn layer be integrated with following yarn layer by alternating yarns binding, adjacent spaces
Interstitial spaces are formed between yarn, make to form wall between yarn layer, following yarn layer above；Yarn layer is included by upper warp structure above
Into upper thread layer and the upper weft layers that are made of upper weft, above be intertwined with warp-wise carbon nanotubes yarn, broadwise carbon in yarn layer
Nanometer cotton sewing thread on cop, the conductive network that radial direction carbon nanotubes yarn, broadwise carbon nanotubes yarn are woven into form pressure sensing layer；Under
Veil layer includes the lower thread layer being made of lower warp and the lower weft layers being made of lower weft.Using top and bottom yarn layer, interval
Structure carrier of the three-dimensional structure of layer as the light-duty three-dimensional structure carbon nanotubes pressure sensing fabric, carries for pressure sensing layer
For the deformation space of thickness direction, the carbon nanotubes yarn in pressure sensing layer is set to produce certain deformation.Above fabric
The position being pressurized when yarn layer is pressurized according to the change deducibility of pressure sensing layer resistance and force value.Carbon nanotubes yarn is larger
Sensing characteristics are stretched in deformation range repeatedly to be basically unchanged；When yarn layer is under pressure above fabric, described in pressure sensing layer
The deformation of carbon nanotubes yarn produce resistance variations, resistance variations and fabric pressing stress-strain relationship are correspondence, therefore can be with
Position and the pressure value of fabric compression are inferred and predicted according to the resistance variations of sensing layer.Light-duty three-dimensional structure carbon nanotubes pressure
Sensing fabric can need to design according to practical application.Using the carbon nanotubes yarn with different sensing capabilities parameters, between change
Every yarn layer height, pressure sensing layer conductive network size, elastic resin species etc., can design with different pressures sensing scope
Three-dimensional structure carbon nanotubes pressure sensing fabric.
Preferably, the upper warp, upper weft, lower warp, lower weft, alternating yarns are insulative yarn.
It is highly preferred that the insulative yarn uses any one or a few the mixing in synthetic fibers and natural fiber.
It is highly preferred that the synthetic fibers are terylene, polyamide fibre, spandex or polyvinyl；Natural fiber is cotton fiber or flaxen fiber.
Preferably, the warp-wise carbon nanotubes yarn, broadwise carbon nanotubes yarn are pure nano-carbon tube yarn, modified
Carbon nanotubes yarn or the carbon nanotubes complex yarn with other polymer after compound.
Preferably, the grid number for the conductive network that the warp-wise carbon nanotubes yarn is woven into broadwise carbon nanotubes yarn
For 3 × 3,6 × 6 or 9 × 9.
Preferably, the spacing of adjacent the warp-wise carbon nanotubes yarn or broadwise carbon nanotubes yarn is 1~10mm.
Preferably, the fabric is pure form of fabric or the flexible compound fabric being combined with elastic resin；Elasticity tree
Fat is polyurethane resin or polydimethylsiloxaneresins resins.
Present invention also offers the preparation method of above-mentioned three dimensional separation machine-knitted structure pressure sensing fabric, it is characterised in that
Yarn layer, following yarn layer above are weaved using three-dimensional woven weaving process；Carbon nanotubes yarn is woven into yarn layer above along through broadwise
In, intertexture forms conductive network, i.e. pressure sensing layer；Yarn layer above, following yarn layer are interweaved and shape using alternating yarns
Fabric is sensed into three dimensional separation.When the fabric face is under pressure, the fabric of spacer structure will produce larger deformation, pressure
Carbon nanotubes yarn deformation in sensing layer causes resistance variations.
Preferably, the thickness of the wall is controlled by the height of leaf gauge, its height is 1~50mm.
The present invention is by the use of the carbon nanotubes yarn with sensing characteristics as functional fibre, using three-dimensional woven weaving process
The top layer of embedded three dimensional separation woven fabric, forms interweaving conductive network, that is, pressure sensing layer；Using polyester fiber as latitude and longitude, divide
Not Zhi Zao top and bottom yarn layer, finally using alternating yarns by top and bottom yarn layer be interweaved and formed three dimensional separation sensing fabric.
When fabric face is under pressure, the fabric of spacer structure will produce larger deformation, the carbon nano-tube yarn in pressure sensing layer
Line deformation causes resistance variations.The fabric has higher sensitivity at low pressures, and having can preferably return at elevated pressures
Renaturation energy, has extensive use in engineer application and the wearable field of intelligence.
Compared with prior art, the beneficial effects of the present invention are：
1. three dimensional separation machine-knitted structure pressure sensing fabric knitting method proposed by the present invention, can will stretch sensing function
Fiber is embedded into the top layer of three-dimensional spacer fabric, realizes big pressure distortion and sensitive sensing effect；
2. the three dimensional separation machine-knitted structure pressure sensing fabric that the present invention realizes, there is three-dimensional structure to be integrally formed advantage,
Light-weight, intensity is high, can be embedded in more or multilayer sensing fiber；
3. the three dimensional separation machine-knitted structure pressure sensing fabric that the present invention realizes, can be according to fabric compression deformation and sensing layer
The quantization correspondence of resistance variations, realizes the prediction of fabric depressed position and force value；
4. the three dimensional separation machine-knitted structure pressure sensing fabric that the present invention realizes, quick with higher sensing under stress
Spend, it is high when the sensitivity at elevated pressures with preferable reversibility energy, appropriateness is to provide large deformation detection under high pressure to believe
Make an uproar and compare, pressure detecting range is wider；
5. three dimensional separation machine-knitted structure pressure sensing fabric proposed by the present invention is suitable for industrialization production, in pressure sensing
Device field has wide application prospect.
Brief description of the drawings
Fig. 1 is the three-dimensional of the position for being used to detect under low pressure range (1~10kPa) compression prepared by embodiment 1 and force value
It is spaced the front view of machine-knitted structure pressure sensing fabric；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the three of the position being pressurized for (10~100kPa) under pressure scope in detecting that embodiment 2 provides and force value
The top view of dimension interval machine-knitted structure pressure sensing fabric.
Embodiment
To become apparent the present invention, hereby with preferred embodiment, and attached drawing is coordinated to be described in detail below.
As shown in Figs. 1-3, a kind of three dimensional separation machine-knitted structure pressure sensing fabric prepared for the present invention, it is included above
Yarn layer 1 and below yarn layer 2, above yarn layer 1 and following yarn layer 2 bundled and be integrated by alternating yarns 31, adjacent spaces yarn 31
Between formed interstitial spaces 32, make above between yarn layer 1, following yarn layer 2 form wall 3；Yarn layer 1 is included by upper warp above
The 11 upper thread layers 13 formed and the upper weft layers 14 that are made of upper weft 12, above be intertwined with warp-wise carbon nanotubes in yarn layer 1
Yarn 41, broadwise carbon nanotubes yarn 42, the conductive mesh that radial direction carbon nanotubes yarn 41, broadwise carbon nanotubes yarn 42 are woven into
Network 43 forms pressure sensing layer 4；Yarn layer 2 includes the lower thread layer 23 that is made of lower warp 21 and is made of lower weft 22 below
Lower weft layers 24.
Embodiment 1
One kind is used for position and the three dimensional separation machine-knitted structure pressure of force value for detecting under low pressure range (1~10kPa) compression
Power senses the preparation method of fabric：
Using three-dimensional woven weaving technology, warp 11 and two layers of lower warp 21 are respectively penetrated equipped with eyes heald on two layers
Heald frame, one layer of upper weft 12 and one layer of lower weft 22 penetrate the multilayer arrow shaft Weft inserting device after repacking, and alternating yarns 31 penetrate general
Logical heald frame；The upper thread layer that warp 11 and one layer of upper intertexture of weft 12 are formed on two layers13 and upper weft layers 14 collectively constitute above
Yarn layer 1, the lower thread layer 23 and lower weft layers 24 that two layers of lower warp 21 is formed with one layer of lower intertexture of weft 22 collectively constitute following
Yarn layer 2；By adding and subtracting yarn process, carbon nanotubes yarn (Suzhou victory enlightening nanometer Co., Ltd) is pressed into certain spacing along through broadwise
Interval is woven into yarn layer 1 above, and warp-wise carbon nanotubes yarn 41 is woven into conductive network 43, shape with broadwise carbon nanotubes yarn 42
Into pressure sensing layer 4；After completing wefting insertion action, barrier flaps control room interlayer 3 is put between upper thread layer 13 and lower thread layer 14
Height, alternating yarns 31 are interweaved wall 3 on composition fabric thickness direction；Alternating yarns 31 will above yarn layer 1 with
The binding of veil layer 2 is integrated, above yarn layer 1, following yarn layer 2 and wall 3 weave at the same time into three dimensional fabric；Fabric is set with flexible
Fat, which combines, prepares light-duty three-dimensional pressure sensing fabric, as shown in Figure 1, 2.
Upper warp 11, upper weft 12, lower warp 21, lower weft 22 and alternating yarns 31 are high-strength and high-modulus polyethylene fiber
Dimension, fineness is 300tex.
The height of wall 3 is controlled by the height of leaf gauge, and leaf gauge is to make a length of 30mm, high 2mm by oneself, thickness 1mm's
Aluminum foil plate.
The three-dimensional structure of yarn layer 1, following yarn layer 2 and wall 3 is as light-duty three-dimensional structure carbon nanotubes above
The structure carrier of pressure sensing fabric, the deformation space of thickness direction is provided for pressure sensing layer, makes the carbon in pressure sensing layer 4
Nanometer cotton sewing thread on cop can produce certain deformation.
42 a diameter of 40 μm of warp-wise carbon nanotubes yarn 41 and broadwise carbon nanotubes yarn, fracture strength more than 100MPa,
With the maximum strain more than 30%.Carbon nano-tube yarn linear resistivity is 105 Ω cm, and the elongation strain transduction factor of itself
For 2.6.
The spacing of adjacent warp-wise carbon nanotubes yarn 41 and broadwise carbon nanotubes yarn 42 is " 1cm in pressure sensing layer 4
×1cm”。
Preferably, warp-wise carbon nanotubes yarn 41 interweaves what is formed with broadwise carbon nanotubes yarn 42 in pressure sensing layer 4
The size of conductive network 43 can be designed according to being actually needed, for " 5 × 5 " (warp thread direction carbon nanotubes yarn radical is 5,
Weft direction carbon nanotubes yarn radical is 5).
The position being pressurized when yarn layer 1 is pressurized above fabric according to the change deducibility of 4 resistance of pressure sensing layer and force value.
Carbon nanotubes yarn has stretching sensing characteristics, can produce compared with large deformation, and in larger deformation range repeatedly
Stretching sensing characteristics are basically unchanged；Warp-wise carbon nanotubes yarn 41 interweaves with broadwise carbon nanotubes yarn 42 forms conductive network
43, make light-duty three-dimensional structure carbon nanotubes pressure sensing fabric that there is pressure sensing；Yarn layer 1 is under pressure above fabric
When, in pressure sensing layer 4 deformation of carbon nanotubes yarn produce resistance variations, above the strong and weak deducibility fabric of resistance variations
The position and force value that yarn layer 1 is pressurized.
Yarn layer 1, following yarn layer 2 are weaved and are integrally formed at the same time with 4 layers of interval yarn layer 3 and pressure sensing above.
Compound flexible resin is polydimethylsiloxaneresins resins with light-duty three-dimensional structure carbon nanotubes pressure sensing fabric
(Dow Corning Corporation), using hand paste technique, after coated with resins when 60 DEG C of 2 times curings 10 are small.
Light-duty three-dimensional structure carbon nanotubes pressure sensing fabric (1~5kPa) under low pressure range has higher sensitivities
Can, sensitivity, (5~10kPa) has sensitivity of preferable reversibility energy, appropriateness big under high pressure to provide under high pressure
High s/n ratio during deformation detection.
Embodiment 2
One kind is used in detecting press the three dimensional separation machine-knitted structure of the position of (10~100kPa) compression and force value under scope
The preparation method of pressure sensing fabric：
The method for weaving of light-duty three-dimensional structure carbon nanotubes pressure sensing fabric is same as Example 1, the difference is that using
Carbon nanotubes yarn with different sensing capabilities parameters, changes the height of wall 3, conductive network 43 in pressure sensing layer 4
Size, elastic resin species, is designed for pressing the three-dimensional of the position of (10~100kPa) compression and force value under scope in detecting
Machine-knitted structure pressure sensing fabric is spaced, as shown in Figure 3.
Upper warp 11, upper weft 12, lower warp 21, lower weft 22 and alternating yarns 31 are high-strength and high-modulus polyethylene fiber
Dimension, fineness is 300tex.
The height of wall 3 is controlled by the height of leaf gauge, and leaf gauge is to make a length of 30mm, high 5mm by oneself, thickness 1mm's
Aluminum foil plate.
42 a diameter of 40 μm of warp-wise carbon nanotubes yarn 41 and broadwise carbon nanotubes yarn, fracture strength more than 100MPa,
With the maximum strain more than 30%.Carbon nano-tube yarn linear resistivity is 105 Ω cm, and the elongation strain transduction factor of itself
For 2.6.
The spacing of adjacent warp-wise carbon nanotubes yarn 41 and broadwise carbon nanotubes yarn 42 is " 2cm in pressure sensing layer 4
×2cm”。
The conductive network that warp-wise carbon nanotubes yarn 41 is formed with the intertexture of broadwise carbon nanotubes yarn 42 in pressure sensing layer 4
43 size can be designed according to being actually needed, for " 3 × 3 " (warp thread direction carbon nanotubes yarn radical is 3, weft direction
Carbon nanotubes yarn radical is 3).
The position being pressurized when yarn layer 1 is pressurized above fabric according to the change deducibility of 4 resistance of pressure sensing layer and force value.
It is flexible polyurethane resin (Bayer with the compound flexible resin of light-duty three-dimensional structure carbon nanotubes pressure sensing fabric
Company), using hand paste technique, after coated with resins when 80 DEG C of 2 times curings 12 are small.
Light-duty three-dimensional structure carbon nanotubes pressure sensing fabric (10~30kPa) under low pressure range has higher sensing
Performance, sensitivity, (30~100kPa) has sensitivity of preferable reversibility energy, appropriateness to provide high pressure under high pressure
High s/n ratio during lower large deformation detection.
Claims (10)
1. a kind of three dimensional separation machine-knitted structure pressure sensing fabric, it is characterised in that including yarn layer above (1) and following yarn layer
(2), yarn layer (1) is integrated with following yarn layer (2) by alternating yarns (31) binding above, shape between adjacent spaces yarn (31)
Gap (32) at interval, make to form wall (3) between yarn layer (1), following yarn layer (2) above；Yarn layer (1) is included by upper above
The upper thread layer (13) and the upper weft layers (14) that are made of upper weft (12) that warp (11) is formed, above intertexture in yarn layer (1)
There are warp-wise carbon nanotubes yarn (41), broadwise carbon nanotubes yarn (42), radial direction carbon nanotubes yarn (41), broadwise carbon nanotubes
The conductive network (43) that yarn (42) is woven into forms pressure sensing layer (4)；Yarn layer (2) includes being made of lower warp (21) below
Lower thread layer (23) and the lower weft layers (24) that are made of lower weft (22).
2. three dimensional separation machine-knitted structure pressure sensing fabric as claimed in claim 1, it is characterised in that the upper warp
(11), upper weft (12), lower warp (21), lower weft (22), alternating yarns (31) are insulative yarn.
3. three dimensional separation machine-knitted structure pressure sensing fabric as claimed in claim 2, it is characterised in that the insulative yarn is adopted
With any one or a few the mixing in synthetic fibers and natural fiber.
4. three dimensional separation machine-knitted structure pressure sensing fabric as claimed in claim 3, it is characterised in that the synthetic fibers are
Terylene, polyamide fibre, spandex or polyvinyl；Natural fiber is cotton fiber or flaxen fiber.
5. three dimensional separation machine-knitted structure pressure sensing fabric as claimed in claim 1, it is characterised in that the warp-wise carbon nanometer
Cotton sewing thread on cop (41), broadwise carbon nanotubes yarn (42) for pure nano-carbon tube yarn, modified carbon nanotubes yarn or with it is other
Carbon nanotubes complex yarn after polymer is compound.
6. three dimensional separation machine-knitted structure pressure sensing fabric as claimed in claim 1, it is characterised in that the warp-wise carbon nanometer
The grid number for the conductive network (43) that cotton sewing thread on cop (41) and broadwise carbon nanotubes yarn (42) are woven into for 3 × 3,6 × 6 or 9 ×
9。
7. three dimensional separation machine-knitted structure pressure sensing fabric as claimed in claim 1, it is characterised in that the adjacent warp-wise carbon
The spacing of nanometer cotton sewing thread on cop (41) or broadwise carbon nanotubes yarn (42) is 1~10mm.
8. three dimensional separation machine-knitted structure pressure sensing fabric as claimed in claim 1, it is characterised in that the fabric is knitted to be pure
Thing form or the flexible compound fabric being combined with elastic resin；Elastic resin is polyurethane resin or dimethyl silicone polymer
Resin.
9. a kind of preparation method of the three dimensional separation machine-knitted structure pressure sensing fabric described in claim 1-8 any one, its
It is characterized in that, yarn layer (1), following yarn layer (2) above is weaved using three-dimensional woven weaving process；By carbon nanotubes yarn along longitude and latitude
To being woven into yarn layer (1) above, intertexture forms conductive network (43), i.e. pressure sensing layer (4)；Will be upper using alternating yarns (31)
Veil layer (1), following yarn layer (2) are interweaved and form three dimensional separation sensing fabric.
10. the preparation method of the three dimensional separation machine-knitted structure pressure sensing fabric described in claim 1-8 any one, its feature
It is, the thickness of the wall (3) is controlled by the height of leaf gauge, its height is 1~50mm.
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| CN110987249A (en) * | 2019-12-09 | 2020-04-10 | 武汉纺织大学 | Fabric type pressure sensor with controllable performance and method for adjusting and controlling pressure sensing performance |
| CN111256880A (en) * | 2018-12-03 | 2020-06-09 | 东华镜月（苏州）纺织技术研究有限公司 | Pressure sensing fabric and pressure detection system |
| CN112134481A (en) * | 2020-09-15 | 2020-12-25 | 北京纳米能源与系统研究所 | Friction nanometer generator manufacturing method, generator, braided fabric and sensor |
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