CN101858076A - High-strength warp knitting geogrid - Google Patents
High-strength warp knitting geogrid Download PDFInfo
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- CN101858076A CN101858076A CN200910301379A CN200910301379A CN101858076A CN 101858076 A CN101858076 A CN 101858076A CN 200910301379 A CN200910301379 A CN 200910301379A CN 200910301379 A CN200910301379 A CN 200910301379A CN 101858076 A CN101858076 A CN 101858076A
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Abstract
The invention discloses a high-strength warp knitting geogrid comprising warp bands and weft bands. The warp bands and the weft bands are crossed at nodal points, and are fixed and connected together by chaining lines at the nodal points through winding and binding. Each warp band comprises 2-4 strands of warp-wise synnema, and the width of each warp band is from 15 to 25 millimeters. Each weft band comprises 2- 4 strands of weft-wise synnema, and the width of each weft band is from 15 to 25 millimeters. The linear density of each strand of the warp-wise synnema is from 16 thousand D to 100 thousand D, and the cross-sectional area is from 5 to 25 square millimeters. The linear density of each strand of the weft-wise synnema is from 16 thousand D to 100 thousand D, and the cross-sectional area is from 5 to 25 square millimeters. The geogrid is weaved by polyester industrial filaments with high strength and high modulus and polypropylene fiber materials, and has the bi-directional tensile strength more than 160 kN/m. The usage effect can be ensured, and the manufacturing cost is greatly reduced. The invention is suitable for large-scale development and application.
Description
Technical field
The present invention relates to a kind of high-strength warp knitting geogrid.
Background technology
Geo-grid is mainly used in the sedimentation load of the carrying soil body in the engineering constructions such as roadbed, dykes and dams, strengthens the supporting capacity of ground
At present, the fibrous material that is used to weave geo-grid mainly is the fibers of filament strengths such as terylene, polypropylene fibre less than 10 gram dawn, and the tensile strength of the geo-grid that is woven into by these fibrous materials is no more than 150kN/m usually, has limited the range of application of geo-grid so greatly.The said gram dawn is meant the weight that single thread can bear in the textile industry.Tensile strength is meant unit width geo-grid tensile ultimate strength under external force.
Chinese patent literature CN101255686A discloses a kind of high-strength earth work grille net, it adopts high-strength high-modulus polyethylene fiber to work out, its tensile strength can reach more than the 200kN/m, and this mainly is because the filament strength of this fibrous material surpassed for 30 gram dawn.And this fibrous material is a kind of special fibrous material, Gross World Product has only about 10,000 tons at present, and China is also with regard to about 1 kiloton, and this fibrous material costs an arm and a leg, common price per ton is terylene, polypropylene fibre price about 20 times, therefore its manufacturing cost is quite big, uses to be subjected to very big restriction.
Summary of the invention
The objective of the invention is to overcome the problems referred to above, provide a kind of and not only have very high tensile strength but also have lower cost and the high-strength warp knitting geogrid of suitable large-scale application.
One of them technical scheme that realizes the object of the invention is: a kind of high-strength warp knitting geogrid, comprise through band and latitude band, and describedly intersect at the node place, and bundle and be fixed together in the winding of node place by the chaining line through band and latitude band; Adjacent to form size between band and latitude band be the mesh of a1 * b1, and the formation size is the grid of a2 Yi 2, and wherein the scope of a1 is 25～35 millimeters, and the scope of b1 is 25～35 millimeters, and the scope of a2 is 45～50 millimeters, and the scope of b2 is 45～50 millimeters; Described each bar comprises 2 strands～4 stock-traders' know-hows to synnema through band, and the width through being with is 15～25 millimeters, and each bar latitude band comprises 2 strands～4 strands broadwise synnemas, and the width of latitude band is 15～25 millimeters; The line density of per share warp-wise synnema is 1.6 ten thousand D～100,000 D, and sectional area is 5～25 square millimeters; The line density of per share broadwise synnema is 1.6 ten thousand D～100,000 D, and sectional area is 5～25 square millimeters; The material of main part of per share warp-wise synnema is the terylene of single end strength at 9～9.5 gram dawn; The material of main part of per share broadwise synnema is the terylene of filament strength at 9～9.5 gram dawn; This geotechnological grid is that warp-wise tensile strength is 160kN/m～1000kN/m under 8%～12.5% the situation at the warp-wise elongation per unit length, is that broadwise tensile strength is 160kN/m～1000kN/m under 8%～12.5% the situation at the broadwise elongation per unit length.
The fabric width of described geo-grid is 1m～5.3m.Each stock-traders' know-how of described geo-grid is to chemical glue-line, modified asphalt layer or the PVC material layer of skin for solidifying after flooding of synnema and each burst broadwise synnema.Described chaining line at the node place to the winding binding through band and latitude band is: positive reverse side is vertical binding in order to intersect binding, and the thickness at the node place of geo-grid is 5mm～6mm, and thickness in monolayer is 3mm～4mm.
Described each bar comprises 3 strands～4 stock-traders' know-hows to synnema through band, and each bar latitude band comprises 3 strands～4 strands broadwise synnemas; This geotechnological grid is that warp-wise tensile strength is 220kN/m～1000kN/m under 8%～12.5% the situation at the warp-wise elongation per unit length, is that broadwise tensile strength is 220kN/m～1000kN/m under 8%～12.5% the situation at the broadwise elongation per unit length.
Another technical scheme that realizes the object of the invention is: a kind of high-strength warp knitting geogrid, comprise through band and latitude band, and describedly intersect at the node place, and bundle and be fixed together in the winding of node place by the chaining line through band and latitude band; Adjacent to form size between band and latitude band be the mesh of a1 * b1, and the formation size is the grid of a2 Yi 2, and wherein the scope of a1 is 25～35 millimeters, and the scope of b1 is 25～35 millimeters, and the scope of a2 is 45～50 millimeters, and the scope of b2 is 45～50 millimeters; Described each bar comprises 2 strands～4 stock-traders' know-hows to synnema through band, and the width through being with is 15～25 millimeters, and each bar latitude band comprises 2 strands～4 strands broadwise synnemas, and the width of latitude band is 15～25 millimeters; The line density of per share warp-wise synnema is 1.6 ten thousand D, ten thousand D～100,000 D, and sectional area is 6～25 square millimeters; The line density of per share broadwise synnema is 1.6 ten thousand D～100,000 D, and sectional area is 6～25 square millimeters; The material of main part of per share warp-wise synnema is the polypropylene filaments of filament strength at 7.5～8 gram dawn; The material of main part of per share broadwise synnema is the polypropylene filaments of filament strength at 7.5～8 gram dawn; This geotechnological grid is that warp-wise tensile strength is 160kN/m～850kN/m under 8%～12.5% the situation at the warp-wise elongation per unit length, is that broadwise tensile strength is 160kN/m～850kN/m under 8%～12.5% the situation at the broadwise elongation per unit length.
The fabric width of described geo-grid is 1m～5.3m.Each stock-traders' know-how of described geo-grid is to chemical glue-line, modified asphalt layer or the PVC material layer of skin for solidifying after flooding of synnema and each burst broadwise synnema.Described chaining line at the node place to the winding binding through band and latitude band is: positive reverse side is vertical binding in order to intersect binding, and the thickness at the node place of geo-grid is 5mm～6mm, and thickness in monolayer is 3mm～4mm.
Described each bar comprises 3 strands～4 stock-traders' know-hows to synnema through band, and each bar latitude band comprises 3 strands～4 strands broadwise synnemas; This geotechnological grid is that warp-wise tensile strength is 200kN/m～850kN/m under 8%～12.5% the situation at the warp-wise elongation per unit length, is that broadwise tensile strength is 200kN/m～850kN/m under 8%～12.5% the situation at the broadwise elongation per unit length.
The present invention has positive effect: warp-wise synnema of (1) geo-grid of the present invention and broadwise synnema all adopt higher polyester industrial filament yarn of filament strength or polypropylene filaments, when fibre single thread is pooled capital, the quantity of used fibre single thread is more, the sectional area of per share synnema is bigger, make that the intensity of synnema of sub-thread is also bigger, thereby the geo-grid that is woven also has bigger tensile strength.(2) node adopts the mode of positive intersection binding and the vertical binding of reverse side, helps can reducing the displacement of node when being subjected to external force, thereby having strengthened node intensity.(3) the present invention adopts high-strength and high-modulus polyester industrial filament yarn and polypropylene fibre material to be woven into the geo-grid of bidirectional stretch intensity more than 160kN/m, can guarantee its result of use, greatly reduces manufacturing cost again, is fit to large-scale development and application.Comprise that through band 3～4 stock-traders' know-hows are to synnema at each bar, and each bar latitude band comprises under the situation of 3～4 strands of broadwise synnemas, and the bidirectional stretch intensity of geo-grid can or be 220kN/m～1000kN/m (high-strength polyester industrial long filament) for 200kN/m～850kN/m (polypropylene fibre); And comprising that through band 4 stock-traders' know-hows are to synnema at each bar, and each bar latitude band comprises under the situation of 4 strands of broadwise synnemas, and the bidirectional stretch intensity of geo-grid can or be 660kN/m～1000kN/m (high-strength polyester industrial long filament) for 520kN/m～850kN/m (polypropylene fibre).
Description of drawings
Fig. 1 is the schematic diagram of a kind of high-strength warp knitting geogrid of the present invention;
Fig. 2 is an A portion enlarged drawing among Fig. 1, shows the positive binding mode of node;
Fig. 3 is the node reverse side binding mode of A portion among Fig. 1;
Fig. 4 is the schematic diagram of another kind of high-strength warp knitting geogrid of the present invention;
Fig. 5 is a B portion enlarged drawing among Fig. 4, shows the positive binding mode of node;
Fig. 6 is the node reverse side binding mode of B portion among Fig. 4.
The specific embodiment
(embodiment 1)
See Fig. 1, the high-strength warp knitting geogrid of present embodiment comprises that each bar is through being with 1 parallel longitudinal setting through being with 1 and latitude band 2, and each bar latitude band 2 laterally be arranged in parallel, and each bar through be with 1 and each bar latitude band 2 intersect mutually at the node place.Every comprises 4 stock-traders' know-hows to synnema 11 through the main body with 1, and the main body of every latitude band 2 comprises 4 strands of broadwise synnemas 21.Each stock-traders' know-how is twined with each burst broadwise synnema 21 to synnema 11 at infall by chaining line 3 (also have claim lashing wire) and to band together, thereby constitute each node, and to form fabric width be 5.3 meters high-strength warp knitting geogrids.Per share warp-wise synnema 11 and per share broadwise synnema 21 constitute by the high-strength and high-modulus polyester industrial filament yarn plying of filament strength at 9～9.5 gram dawn, and its line density can reach 100,000 D (denier).
Adjacent through with 1 and latitude band 2 between the size that forms be 25mm? the mesh of 5mm (a1 Yi 1), and the formation size is 50mm? the grid of 0mm (a2 Yi 2).Through the width with 1 is 25mm, is 25mm through the band sectional area
2, the width of latitude band 2 is 25mm, latitude band sectional area is 25mm
2
See Fig. 2 and Fig. 3, when chaining line 3 carried out each stock-traders' know-how tying up between synnema 11 and each burst broadwise synnema 21 at the node place, for intersecting binding, reverse side be vertical binding in the front of geo-grid, and friendship node thickness is 6mm, and thickness in monolayer is 4mm.Each stock-traders' know-how is to chemical glue-line, modified asphalt layer or the PVC material layer of skin for solidifying after flooding of synnema 11 and each burst broadwise synnema 21.Chemistry glue-line, modified asphalt layer or the used material of PVC material layer are the application coating cladding materials of warp knitting geogrid routine.
The high-strength warp knitting geogrid of present embodiment is carrying out tensile property when test, is that its warp-wise tensile strength is 660kN/m～1000kN/m under 8%～12.5% the situation at the warp-wise elongation per unit length; Be that its broadwise tensile strength is 660kN/m～1000kN/m under 8%～12.5% the situation at the broadwise elongation per unit length.
The production procedure of high-strength warp knitting geogrid of the present invention is as follows:
At first, on the basis of common tricot machine, increase traverse, so that thicker warp thread and the weft yarn of braiding.The high-strength and high-modulus polyester industrial filament yarn is passed bank, by the dividing sinker plate it is separated again.In let-off mechanism, increase by one group of tractive roller, promptly use two groups of tractive rollers, increase the tractive ability like this, guarantee under the situation of the powerful big fiber of warp-wise use, can steadily weave.Make warp thread by 4 roller tractives, take the double speed warp let-off.And then by the dividing sinker plate it is separated, carry out tractive again one time.Increase the brute force of yarn hook in the weft yarn connecting gear and hold the yarn ability, the line in the Weft laying mechanism is 16.Warp thread and weft yarn are carried out the lopping binding by the chaining line, and the binding mode at the node place is: positive reverse side is vertical binding in order to intersect binding, and the thickest warp-wise synnema 11 at binding node place or the chaining line line density of broadwise synnema 21 can reach 1100dtex.This binding mode has increased the binding fastness, in use can overcome displacement of joint reliably.Drying and shaping behind the supersonic oscillations impregnation then, last rolling.
(embodiment 2)
All the other are identical with embodiment 1, and difference is: adjacent through be with 1 and latitude band 2 between form size and be 28mm? are the mesh of 8mm, the sizing grid of high-strength warp knitting geogrid 48mm? 8mm; Each bar is 20mm through being with 1 to comprise 3 stock-traders' know-hows to synnema 11 through the width with 1, is 15mm through the band sectional area
2, each bar latitude band 2 comprises 3 strands of broadwise synnemas 21, and latitude band 2 width are 20mm, and latitude band sectional area is 15mm
2The fabric width of high-strength warp knitting geogrid is 5.3m.Handing over the thickness at node place is 5.5mm, and thickness in monolayer is 3.5mm.
The high-strength warp knitting geogrid of present embodiment is carrying out tensile property when test, is that warp-wise tensile strength is 220kN/m～660kN/m under 8%～12.5% the situation at the warp-wise elongation per unit length; Be that broadwise tensile strength is 220kN/m～660kN/m under 8%～12.5% the situation at the broadwise elongation per unit length.
(embodiment 3)
All the other are identical with embodiment 1, and difference is: adjacent through be with 1 and latitude band 2 between form size and be 30mm? are the mesh of 0mm, the grid of high-strength warp knitting geogrid 45mm? 5mm; Each bar is 15mm through being with 1 to comprise 2 stock-traders' know-hows to synnema 11 through the width with 1, is 5mm through the band sectional area
2, each bar latitude band 2 comprises 2 strands of broadwise synnemas, and the width of latitude band 2 is 15mm, and latitude band sectional area is 5mm
2The fabric width of high-strength warp knitting geogrid is 5.3m.Handing over the thickness at node place is 5mm, and thickness in monolayer is 3mm.
The high-strength warp knitting geogrid of present embodiment is carrying out tensile property when test, is that warp-wise tensile strength is 160kN/m～220kN/m under 8%～12.5% the situation at the warp-wise elongation per unit length; Be that broadwise tensile strength is 160kN/m～220kN/m under 8%～12.5% the situation at the broadwise elongation per unit length.
(embodiment 4)
See Fig. 4 to Fig. 6, the remainder of present embodiment is identical with embodiment 1, and difference is: the per share warp-wise synnema 11 of the high-strength warp knitting geogrid of present embodiment and per share broadwise synnema 21 are plied to line density by filament strength in the polypropylene filaments at 7.5～8 gram dawn and can reach 60,000 D and constitute.Fabric width is 5.3m, and each thickness of handing over the node place is 5.5mm, and thickness in monolayer is 3.5mm.Adjacent through be with 1 and latitude band 2 between form size and be 28mm? the mesh of 8mm, and the formation size is 48mm? the grid of 8mm; Each bar is 20mm through being with 1 to comprise 3 stock-traders' know-hows to synnema 11 through bandwidth, is 15mm through the band sectional area
2, each bar latitude band 2 comprises 3 strands of broadwise synnemas 21, and the latitude bandwidth is 20mm, and latitude band sectional area is 15mm
2
The high-strength warp knitting geogrid of present embodiment is carrying out tensile property when test, is that warp-wise tensile strength is 200kN/m～520kN/m under 8%～12.5% the situation at the warp-wise elongation per unit length; Be that broadwise tensile strength is 200kN/m～520kN/m under 8%～12.5% the situation at the broadwise elongation per unit length.
Its preparation method is with embodiment 1.
(embodiment 5)
All the other are identical with embodiment 4, difference is: the fabric width of the high-strength warp knitting geogrid of present embodiment is 5.3m, handing over node thickness is 6mm, thickness in monolayer is 4mm, adjacent through be with 1 and latitude band 2 between form size and be 25mm? the mesh of 5mm, and the formation size is 50mm? the grid of 0mm; Each bar is 25mm through being with 1 to comprise 4 stock-traders' know-hows to synnema 11 through bandwidth, is 25mm through the band sectional area
2, each bar latitude band 2 comprises 4 strands of broadwise synnemas, and the latitude bandwidth is 25mm, and latitude band sectional area is 25mm
2
The high-strength warp knitting geogrid of present embodiment is carrying out tensile property when test, is under 8%～12.5% the situation at the warp-wise elongation per unit length, warp-wise tensile strength 520kN/m～850kN/m; Be that broadwise tensile strength is 520kN/m～850kN/m under 8%～12.5% the situation at the broadwise elongation per unit length.
(embodiment 6)
All the other are identical with embodiment 4, difference is: the fabric width of the high-strength warp knitting geogrid of present embodiment is 5.3m, handing over the thickness at node place is 5mm, thickness in monolayer is 3mm, adjacent through be with 1 and latitude band 2 between form size and be 30mm? the mesh of 0mm, and the formation size is 45mm? the grid of 5mm; Each bar is 15mm through being with 1 to comprise 2 stock-traders' know-hows to synnema 11 through bandwidth, is 6mm through the band sectional area
2, each bar latitude band 2 comprises 2 strands of broadwise synnemas 21, and the latitude bandwidth is 15mm, and latitude band sectional area is 6mm
2
The high-strength warp knitting geogrid of present embodiment is carrying out tensile property when test, is that warp-wise tensile strength is 160kN/m～200kN/m under 8%～12.5% the situation at the warp-wise elongation per unit length; Be that broadwise tensile strength is 160kN/m～200kN/m under 8%～12.5% the situation at the broadwise elongation per unit length.
Claims (10)
1. high-strength warp knitting geogrid comprises through band (1) and latitude band (2), describedly intersects at the node place through band (1) and latitude band (2), and is bundled and be fixed together in the winding of node place by chaining line (3); It is characterized in that: the adjacent size that forms between band (1) and latitude band (2) is the mesh of a1 * b1, and to form size be the grid of a2 Yi 2, and wherein the scope of a1 is 25～35 millimeters, and the scope of b1 is 25～35 millimeters, the scope of a2 is 45～50 millimeters, and the scope of b2 is 45～50 millimeters; Described each bar comprises 2 strands～4 stock-traders' know-hows to synnema (11) through band (1), and the width through being with (1) is 15～25 millimeters, and each bar latitude band (2) comprises 2 strands～4 strands broadwise synnemas (21), and the width of latitude band (2) is 15～25 millimeters; The line density of per share warp-wise synnema (11) is 1.6 ten thousand D～100,000 D, and sectional area is 5～25 square millimeters; The line density of per share broadwise synnema (21) is 1.6 ten thousand D～100,000 D, and sectional area is 5～25 square millimeters; The material of main part of per share warp-wise synnema (11) is the terylene of single end strength at 9～9.5 gram dawn; The material of main part of per share broadwise synnema (21) is the terylene of filament strength at 9～9.5 gram dawn; This geotechnological grid is that warp-wise tensile strength is 160kN/m～1000kN/m under 8%～12.5% the situation at the warp-wise elongation per unit length, is that broadwise tensile strength is 160kN/m～1000kN/m under 8%～12.5% the situation at the broadwise elongation per unit length.
2. high-strength warp knitting geogrid according to claim 1 is characterized in that: the fabric width of geo-grid is 1m～5.3m.
3. high-strength warp knitting geogrid according to claim 1 is characterized in that: each stock-traders' know-how of geo-grid is to chemical glue-line, modified asphalt layer or the PVC material layer of skin for solidifying after flooding of synnema (11) and each burst broadwise synnema (21).
4. high-strength warp knitting geogrid according to claim 1, it is characterized in that: chaining line (3) at the node place to the winding binding through band (1) and latitude band (2) is: positive for intersecting binding, reverse side is vertical binding, the thickness at the node place of geo-grid is 5mm～6mm, and thickness in monolayer is 3mm～4mm.
5. according to the described high-strength warp knitting geogrid of one of claim 1 to 4, it is characterized in that: each bar comprises 3 strands～4 stock-traders' know-hows to synnema (11) through band (1), and each bar latitude band (2) comprises 3 strands～4 strands broadwise synnemas (21); This geotechnological grid is that warp-wise tensile strength is 220kN/m～1000kN/m under 8%～12.5% the situation at the warp-wise elongation per unit length, is that broadwise tensile strength is 220kN/m～1000kN/m under 8%～12.5% the situation at the broadwise elongation per unit length.
6. high-strength warp knitting geogrid comprises through band (1) and latitude band (2), describedly intersects at the node place through band (1) and latitude band (2), and is bundled and be fixed together in the winding of node place by chaining line (3); It is characterized in that: the adjacent size that forms between band (1) and latitude band (2) is the mesh of a1 * b1, and to form size be the grid of a2 Yi 2, and wherein the scope of a1 is 25～35 millimeters, and the scope of b1 is 25～35 millimeters, the scope of a2 is 45～50 millimeters, and the scope of b2 is 45～50 millimeters; Described each bar comprises 2 strands～4 stock-traders' know-hows to synnema (11) through band (1), and the width through being with (1) is 15～25 millimeters, and each bar latitude band (2) comprises 2 strands～4 strands broadwise synnemas (21), and the width of latitude band (2) is 15～25 millimeters; The line density of per share warp-wise synnema (11) is 1.6 ten thousand D, ten thousand D～100,000 D, and sectional area is 6～25 square millimeters; The line density of per share broadwise synnema (21) is 1.6 ten thousand D～100,000 D, and sectional area is 6～25 square millimeters; The material of main part of per share warp-wise synnema (11) is the polypropylene filaments of filament strength at 7.5～8 gram dawn; The material of main part of per share broadwise synnema (21) is the polypropylene filaments of filament strength at 7.5～8 gram dawn; This geotechnological grid is that warp-wise tensile strength is 160kN/m～850kN/m under 8%～12.5% the situation at the warp-wise elongation per unit length, is that broadwise tensile strength is 160kN/m～850kN/m under 8%～12.5% the situation at the broadwise elongation per unit length.
7. high-strength warp knitting geogrid according to claim 6 is characterized in that: the fabric width of geo-grid is 1m～5.3m.
8. high-strength warp knitting geogrid according to claim 6 is characterized in that: each stock-traders' know-how of geo-grid is to chemical glue-line, modified asphalt layer or the PVC material layer of skin for solidifying after flooding of synnema (11) and each burst broadwise synnema (21)
9. high-strength warp knitting geogrid according to claim 6, it is characterized in that: chaining line (3) at the node place to the winding binding through band (1) and latitude band (2) is: positive for intersecting binding, reverse side is vertical binding, the thickness at the node place of geo-grid is 5mm～6mm, and thickness in monolayer is 3mm～4mm.
10. according to the described high-strength warp knitting geogrid of one of claim 6 to 9, it is characterized in that: each bar comprises 3 strands～4 stock-traders' know-hows to synnema (11) through band (1), and each bar latitude band (2) comprises 3 strands～4 strands broadwise synnemas (21); This geotechnological grid is that warp-wise tensile strength is 200kN/m～850kN/m under 8%～12.5% the situation at the warp-wise elongation per unit length, is that broadwise tensile strength is 200kN/m～850kN/m under 8%～12.5% the situation at the broadwise elongation per unit length.
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| CN200910301379A CN101858076A (en) | 2009-04-07 | 2009-04-07 | High-strength warp knitting geogrid |
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| CN103469782A (en) * | 2013-09-23 | 2013-12-25 | 山东浩珂矿业工程有限公司 | Fiber bragg grating compound dacron geogrid and preparation method thereof |
| WO2014020270A1 (en) * | 2012-08-01 | 2014-02-06 | Mdb Texinov | High-strength grid with reinforced bonding for buried networks or devices |
| CN105220308A (en) * | 2015-10-26 | 2016-01-06 | 湖南大学 | A kind of impact resistant composite material fabric |
| CN108908962A (en) * | 2018-06-21 | 2018-11-30 | 凌乐波 | A kind of mesh sheet manufacturing method and mesh sheet |
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| CN103469782B (en) * | 2013-09-23 | 2015-11-18 | 浩珂科技有限公司 | The preparation method of fiber grating compound dacron geogrid |
| CN105220308A (en) * | 2015-10-26 | 2016-01-06 | 湖南大学 | A kind of impact resistant composite material fabric |
| CN105220308B (en) * | 2015-10-26 | 2017-10-03 | 湖南大学 | A kind of impact resistant composite material fabric |
| CN108908962A (en) * | 2018-06-21 | 2018-11-30 | 凌乐波 | A kind of mesh sheet manufacturing method and mesh sheet |
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Application publication date: 20101013 |