CN110962412A - Fabric hybrid structure stab-resistant composite material and preparation method thereof - Google Patents

Fabric hybrid structure stab-resistant composite material and preparation method thereof Download PDF

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Publication number
CN110962412A
CN110962412A CN201811128834.5A CN201811128834A CN110962412A CN 110962412 A CN110962412 A CN 110962412A CN 201811128834 A CN201811128834 A CN 201811128834A CN 110962412 A CN110962412 A CN 110962412A
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China
Prior art keywords
fabric
stab
fibers
composite material
fiber
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Pending
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CN201811128834.5A
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Chinese (zh)
Inventor
李婷婷
张霞云
林佳弘
许炳铨
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Tianjin Polytechnic University
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Tianjin Polytechnic University
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Priority to CN201811128834.5A priority Critical patent/CN110962412A/en
Publication of CN110962412A publication Critical patent/CN110962412A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/08—Impregnating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/14—Mixture of at least two fibres made of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment
    • B32B2571/02—Protective equipment defensive, e.g. armour plates, anti-ballistic clothing

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

The invention provides a fiber-mixed stab-resistant composite material combining non-woven fabric and a preparation method thereof. The composite stab-resistant composite material comprises a plurality of layers of non-woven fabrics and fabrics, wherein the upper and lower coating layers of the non-woven fabrics are made of high-performance fibers and nylon fibers, and the high-performance fibers comprise recycled fibers thereof. The middle layer comprises a non-woven fabric of low-melting point or other thermal bonding fibers, and a composite yarn fabric wrapped by high-performance fibers, cotton and other fibers, wherein the layer ratio of the non-woven fabric to the fabric is (n +1) to n (n is the number of fabric layers). The fabric is treated with a shear thickening fluid, the fabric and the non-fabric of the intermediate layer are laminated to each other, and the fabric are at various angles. The non-woven fabric of the middle layer and the fabric are processed by needling. The coating layer and the middle layer are compounded in one of needling, sewing and other modes. The composite material has the advantages of softness, low cost, good stab resistance and the like.

Description

Fabric hybrid structure stab-resistant composite material and preparation method thereof
The technical field is as follows:
the invention belongs to the technical field of textile materials, and particularly relates to a fabric hybrid structure stab-resistant composite material and a preparation method thereof.
Background art:
high performance fibers such as aramid, ultra high molecular weight polyethylene, high strength nylon, and the like, have high strength, high modulus, high shear and impact properties, and are one of the preferred materials for making stab resistant garments. The high-performance fibers are mostly made into flexible stab-resistant composite materials by adopting structures such as single weaving, knitting, non-weaving, knitting and the like, the performance, the structure, the elasticity, the strength and the like of raw materials determine the stab-resistant performance of the composite materials, and the effect of increasing the stab-resistant performance by improving the friction among the fibers through high-count and high-density weaving is limited. The anti-stab material disclosed in the Chinese patent CNI07310227A is prepared by adhering anti-stab modules to cloth according to an array rule, wherein the anti-stab modules are prepared from thermoplastic resin and high-performance fibers, the material is used for anti-stab by using a self-locking principle, and the method is high in preparation cost and complicated in process. The Chinese patent CNI06858769A designs a stab-resistant garment made of carbon fiber plates, the material has good stab-resistant effect, but the stab-resistant material does not belong to flexible stab-resistant materials, and brings inconvenience to wearers.
The compactness between fibers is increased by compounding the non-woven fabric and the fabric. The textile hybrid fiber combines a non-weaving technology and a weaving technology, can exert the advantages of various fibers through fiber material composition and structural design, reduces the material cost and improves the stab-resistant performance of the structure. The flexible stab-resistant material is adopted to reinforce the stab-resistant performance by using a textile composite technical means, so that the problems of rigidity and comfort of the stab-resistant composite material can be effectively solved, the stab-resistant performance and the stability thereof can be improved, and the requirements of the modern society on individual protection are met.
Disclosure of Invention
The invention solves the technical problem of providing a fiber-mixed stab-resistant composite material combining non-woven fabric and textile fabric and a preparation method thereof. The composite stab-resistant composite material comprises a plurality of layers of non-woven fabrics and fabrics, wherein the upper and lower coating layers are made of non-woven fabrics consisting of high-performance fibers and nylon fibers, and the high-performance fibers comprise high-performance fibers and recycled fibers thereof. The middle layer comprises a non-woven fabric of low-melting-point or other thermal bonding fibers, and a composite yarn fabric wrapped by high-performance fibers, cotton and other fibers, wherein the layer ratio of the non-woven fabric to the fabric is (n +1) to n. The fabric is treated with a shear thickening fluid, the fabric of the intermediate layer being at an angle to the fabric. The non-woven fabric of the middle layer and the fabric are processed by needling. The cladding layer and the middle layer are compounded in a needling or sewing mode, and the composite material is soft, low in cost and good in puncture-proof effect.
The further technical scheme is that the fabric is made of one of high-performance fibers and cotton yarns and other high-performance fiber wrapped composite yarns, the high-performance fibers comprise aramid fibers, high-strength polyethylene and the like, and the warp and weft density of the fabric is 10-34 pieces/inch.
A further technical solution of the present invention is to impregnate a treated fabric with a shear thickening fluid prepared from nano-sized silica particles and polyethylene glycol. The content of silica in the shear thickening fluid is 12-60%, and the particle size of the silica is 7nm-15 μm.
The intermediate layer is prepared by stacking a low-melting-point fiber non-woven fabric or a non-woven fabric containing other thermal bonding fibers, a fabric, a low-melting-point non-woven fabric or a non-woven fabric containing other thermal bonding fibers in the order of the fabric in the intermediate layer and processing the stacked layers by needling.
The invention further provides a scheme that the non-woven fabric with low melting point or the non-woven fabric containing other thermal bonding fibers and the fabric are layered according to the layer ratio of (n +1) to n, and the fabric are layered according to a certain angle.
The invention further adopts the scheme that the high-performance fiber and nylon fiber non-woven fabric is formed by sewing or needling and processing the middle layer.
Drawings
FIG. 1: soft stab-resistant material structure
FIG. 2 is a drawing: structure of the preferred embodiment
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes and modifications to the present invention may be effected by those skilled in the art after reading the teachings herein, and such equivalents are intended to be encompassed within the scope of the present invention as defined in the appended claims.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention aims to solve the technical problem of inventing a fabric hybrid structure stab-resistant composite material and a preparation method thereof.
The middle layer consists of a low-melting-point needled felt and high-performance woven fabric-basalt plain weave cloth, and the surface density of the low-melting-point non-woven fabric is 200g/m2The density of the basalt plain cloth cover is 251g/m2The warp and weft densities are 13 pieces/inch, wherein the basalt plain cloth is positioned in the middle layer and is manufactured by needle punching. And further impregnating the basalt plain cloth with a shear thickening fluid, wherein the shear thickening fluid is used as a reinforcing material for reinforcing the stab-resistant performance of the fabric.
The further shearing thickening liquid is prepared by 12nm silicon dioxide particles and polyethylene glycol 200, and the weight percentage of the silicon dioxide is 15%.
Further, the upper and lower coating layers are made of nylon non-woven fabrics with the surface density of 200g/m2。
The anti-stab composite fabric is compounded in a needling processing mode. The density of the needles is 100 threads/cm2The depth of the needle is 7 mm.
The quasi-static anti-prick force value of the fabric is 296N, the quasi-static anti-knife-prick force value is 155N, and the dynamic anti-prick force value is 189N.

Claims (7)

1. The fabric hybrid structure stab-resistant composite material is characterized by comprising an upper coating layer, a lower coating layer and an intermediate layer, wherein the upper coating layer and the lower coating layer are formed by forming felt layers by high-performance fibers and nylon fibers according to a certain proportion, the proportion of the high-performance fibers or high-performance recycled fibers to the nylon of the upper coating layer and the lower coating layer is 0: 100-100% to 0, the intermediate layer is formed by a low-melting-point fiber or other heat-bonding fiber felt layers and fabrics, and the low-melting-point fibers exist between non-fabrics and the fabrics in a vertical fiber bundle form.
2. The stab-resistant composite of claim 1, wherein said fabric comprises a fabric of high-performance fibers, cotton and other fiber-wrapped composite yarns, said fabric being impregnated with a shear thickening fluid, and said layers of soft stab-resistant fabric being consolidated with vertical fiber bundles.
3. The method of claim 1, comprising the steps of:
(1) dissolving silicon dioxide particles in polyethylene glycol through mechanical stirring and ultrasonic dispersion treatment to prepare the shear thickening liquid. The silicon dioxide particles are characterized in that the particle size is 7nm-15 mu m, the silicon dioxide particles can be treated by plasma, and other nanoparticles capable of improving the shear thickening effect can be added into the shear thickening liquid or other compound improvements are also in the protection scope of the patent.
(2) Diluting the shear thickening fluid obtained in the step (1) with alcohol, and then using the diluted shear thickening fluid to impregnate and treat the fabric.
(3) And (3) overlapping the composite fabric obtained in the step (2) and the non-woven fabric of the low-melting-point fiber or the non-woven fabric containing the thermal bonding fiber with the fabric at a certain angle according to the layer ratio of (n +1) to n, and then compounding by needling to form the consolidated composite material among the vertical fiber bundle layers.
(4) And (4) taking the composite material obtained in the step (3) as an intermediate layer, taking a high-performance short fiber layer as a surface layer, and obtaining the stab-resistant composite material with a soft mixed structure by a sewing or needling method.
4. The method of claim 3 wherein the fabric has a warp and weft density of 10-34 yarns/inch.
5. The method of claim 3, wherein the shear thickening fluid comprises plasma treated silica and polyethylene glycol, the silica is 12-60 wt%, and the silica has a particle size of 7nm-15 um.
6. The method of claim 3 wherein the needling density is 60-300 punches per square centimeter.
7. The stab-resistant composite material disclosed by the patent has the characteristics of light weight, good flexibility, light weight and good puncture resistance.
CN201811128834.5A 2018-09-27 2018-09-27 Fabric hybrid structure stab-resistant composite material and preparation method thereof Pending CN110962412A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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