CN116766723B - High-performance grid composite film for tire and preparation method thereof - Google Patents

High-performance grid composite film for tire and preparation method thereof Download PDF

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Publication number
CN116766723B
CN116766723B CN202310758704.4A CN202310758704A CN116766723B CN 116766723 B CN116766723 B CN 116766723B CN 202310758704 A CN202310758704 A CN 202310758704A CN 116766723 B CN116766723 B CN 116766723B
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silk screen
woven
film layer
composite film
mesh
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CN116766723A (en
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刘团治
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Qingdao Wenwugang Technology Co ltd
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Qingdao Wenwugang Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • 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
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • 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
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • 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
    • B32B38/0036—Heat treatment
    • 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
    • B32B38/06—Embossing
    • 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
    • B32B5/026—Knitted fabric
    • 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
    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
    • 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
    • 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
    • D06M11/32—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic System; Titanates; Zirconates; Stannates; Plumbates
    • 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
    • D06M11/32—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/50—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with hydrogen peroxide or peroxides of metals; with persulfuric, permanganic, pernitric, percarbonic 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
    • 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
    • D06M11/51—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 sulfur, selenium, tellurium, polonium or compounds thereof
    • D06M11/55—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 sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid 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
    • 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
    • D06M11/73—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 carbon or compounds thereof
    • 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
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • 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
    • 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
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups

Abstract

The application relates to the field of polyolefin plastic films, and particularly discloses a high-performance grid composite film for a tire and a preparation method thereof. The utility model provides a high performance net complex film for tire, includes PE upper film layer, PE lower membranous layer and is located PE upper film layer and PE lower membranous layer middle braided wire net, braided wire net is through following preliminary treatment: immersing the woven silk screen in chromic acid solution, performing ultrasonic treatment for 3-8min, cleaning, and drying; dispersing PDMS and a curing agent into n-hexane, and performing ultrasonic treatment for 1-2 hours to prepare a dispersion liquid; and (3) placing the knitted silk screen treated by the chromic acid solution into the dispersion liquid, carrying out vacuum suction filtration and drying. The high-performance grid composite film for the tire has the advantages of good stretching resistance and tearing resistance, strong binding force between three layers of films, difficult separation and long repeated service life.

Description

High-performance grid composite film for tire and preparation method thereof
Technical Field
The application relates to the technical field of polyolefin plastic films, in particular to a high-performance grid composite film for a tire and a preparation method thereof.
Background
In the tire molding process of the rubber tire, the tire blank is formed by bonding a plurality of layers of rubber sheets, so that the rubber sheets are completely isolated from air, sunlight and other impurities, otherwise, an oxide layer is generated on the surfaces of the rubber sheets, and the service life of the tire and the safety in the driving process on a road are influenced by the oxide layer. At present, the problem can be better solved by adopting the polyethylene isolation preservative film, because the polyethylene isolation preservative film quickly seals the rubber sheet up and down at the moment after the rubber sheet is rolled and bonded with the steel wire, so that the rubber sheet is quickly isolated from sunlight, air and the like, the preservative effect is easy to achieve, the bonding effect of each layer of rubber sheet of the tire is greatly improved after the rubber sheet is produced into the tire, the rubber sheet is not easy to delaminate, and the safety of an automobile is improved due to the good wear resistance and high temperature resistance of the rubber sheet in the high-speed running process of the tire.
However, the existing polyethylene isolation safety film has low tensile strength, is easy to form stretching deformation during stripping, causes the phenomena of bursting ribs or wrinkles, perforation and the like, and can damage a rubber sheet to cause the rubber sheet to be unusable, so that the polyethylene isolation safety film can only be used once during the production of the existing tire.
In order to enable the preservative film to be reused, in the prior art, a reusable plasticized isolation lining (pad) cloth is disclosed in Chinese patent document with the application number of CN022663754, which discloses a plastic preservative film formed by taking a polypropylene woven cloth as a basic skeleton and coating polyethylene materials or polypropylene materials on one side or two sides of the basic skeleton of the polypropylene woven cloth.
In view of the above-mentioned related art, the inventors found that the surface of the polypropylene woven cloth is smooth, and it is difficult to adhere when the surface is coated with polyethylene or polypropylene, so that the polypropylene woven cloth is easily layered with polyethylene or polypropylene film, and the service life is reduced.
Disclosure of Invention
In order to improve the adhesion fastness between a base cloth framework and a polyethylene or polypropylene film in a polyethylene isolation preservative film, the base cloth framework is not easy to fall off and delaminate, and the service life is prolonged, the application provides a high-performance grid composite film for a tire and a preparation method thereof.
In a first aspect, the present application provides a high performance mesh composite film for a tire, which adopts the following technical scheme: the utility model provides a high performance net complex film for tire, includes PE upper film layer, PE lower membranous layer and is located PE upper film layer and PE lower membranous layer middle braided wire net, braided wire net is through following preliminary treatment:
immersing the woven silk screen in chromic acid solution, performing ultrasonic treatment for 3-8min, cleaning, and drying;
dispersing PDMS and a curing agent into n-hexane, and performing ultrasonic treatment for 1-2 hours to prepare a dispersion liquid;
and (3) placing the knitted silk screen treated by the chromic acid solution into the dispersion liquid, carrying out vacuum suction filtration and drying.
By adopting the technical scheme, the woven silk screen is firstly subjected to ultrasonic treatment in chromic acid solution, the ultrasonic wave has cavitation effect, and the cavitation effect enables the solution to generate local high temperature and high pressure, so that under the action of the ultrasonic wave, the self skeleton of the woven silk screen subjected to chromic acid solution treatment is not seriously damaged, but the oxygen-containing functional group content of the surface of the woven silk screen is increased, the surface is uneven, the surface is roughened from smooth, the depth of a groove is deepened, the specific surface area is increased, the contact area between the woven silk screen and a PE upper film layer and a PE lower film layer is increased, the friction coefficient is increased, the woven silk screen is not easy to slide, and the bonding is more stable; when the woven silk screen treated by chromic acid solution is compounded with the PE upper film layer and the PE lower film layer in a hot-pressing way, the content of functional groups is increased, the wettability is increased, and the compatibility is poor, so that the woven silk screen treated by chromic acid solution is immersed in a dispersion liquid obtained by containing PDMS, and PMDS is used as a hydrophobic treatment agent, so that the non-polarity of the surface of the woven silk screen can be improved, and the woven silk screen is good in compatibility, compact in hot-pressing adhesion, not easy to delaminate and long in repeated service life when being compounded with the PE lower film layer and the PE lower film layer in a hot-pressing way.
Alternatively, the concentration of PDMS in the dispersion is 0.6 to 0.8wt%.
Through adopting above-mentioned technical scheme, PDMS deposits on the woven wire net through the vacuum suction, and concentration is too big, can lead to the mesh adhesion of woven wire net, and the porosity falls, loses tensile properties.
Optionally, the dispersion liquid also contains carbon nanotubes, and the mass ratio of the carbon nanotubes to the PDMS is 1:0.3-0.5.
By adopting the technical scheme, the woven silk screen treated by the chromic acid solution presents hydrophilicity, and the tensile strength and tear resistance of the woven silk screen are reduced due to slight oxidation and increase of roughness of the surface of the woven silk screen, so that the carbon nano tube is added into the dispersion liquid, deposited on the woven silk screen under the vacuum suction filtration, tightly adhered to the woven silk screen under the viscous action of PDMS, has stronger hydrophobicity, and can improve the damaged mechanical strength of the woven silk screen due to chromic acid treatment.
Optionally, the woven wire mesh is made of ultra-high molecular weight polyethylene fibers and polypropylene filaments which are woven in an overlapping manner.
By adopting the technical scheme, the ultra-high molecular weight polyethylene fiber has high strength, high wear resistance and high tearing property; the polypropylene filament has the advantages of good extensibility and strong deformation resistance, and the polypropylene filament can be used as the raw material of the woven silk screen to prepare the woven silk screen with stronger tearing resistance, so that the prepared composite film is not easy to generate the phenomena of wrinkling, rib bursting and the like when being peeled off from the rubber sheet.
Optionally, the pretreatment of the woven silk screen further comprises the following steps:
placing the woven silk screen obtained by vacuum filtration into deionized water, adding tetrabutyl titanate ethanol solution, adjusting pH to 7, reacting at 100-110deg.C for 20-24h, cooling, drying, placing above PFDS, and vacuum evaporating at 100-110deg.C under 70-75kPa for 20-30min.
By adopting the technical scheme, the treated woven silk screen and tetrabutyl titanate react under the hydrothermal condition, nano titanium dioxide is hydrothermally synthesized on the woven silk screen, so that the roughness of the surface of the high molecular weight polyethylene fiber is increased, the contact area between the woven silk screen fiber and the PE lower film layer is further increased, and when the woven silk screen with increased roughness is in hot press lamination with the PE upper film layer and the PE lower film layer, the relatively rough surface can form a mechanical riveting effect, the binding force between the woven silk screen and the PE lower film layer is improved, and layering is prevented; and then PFDS (sodium perfluorodecanesulfonate) is evaporated and deposited on the surfaces of the woven silk screen and the titanium dioxide to improve the hydrophobicity of the woven silk screen and the titanium dioxide and improve the cohesive force with the PE upper film layer and the PE lower film layer during hot-pressing lamination.
Optionally, the mesh of the woven silk screen is 0.01-0.05mm.
By adopting the technical scheme, the mesh of the woven silk screen is proper, the phenomenon that the woven silk screen is large in weaving density and easy to slip and small in mesh can be avoided, so that errors, wrinkles and uneven distribution are generated.
Optionally, the thickness of the composite film is 0.3-0.5mm.
By adopting the technical scheme, the composite film with the thickness can provide stronger tearing resistance and stretching resistance.
In a second aspect, the present application provides a method for preparing a high performance mesh composite film for a tire, which adopts the following technical scheme:
the preparation method of the high-performance grid composite film for the tire comprises the following steps:
mixing polyvinylidene fluoride and polymethyl methacrylate, extruding and granulating, and casting to two sides of a woven silk screen to form protective films on two sides of the woven silk screen;
mixing 2-6 parts of LDPE, 2.5-6 parts of LLDPE, 0.5-1.6 parts of mPE, 0.6-1.2 parts of nano calcium carbonate and 0.01-0.05 part of plasticizer, melting, extruding, stretching and shaping to prepare an upper PE film layer and a lower PE film layer;
placing the woven silk screen between the PE upper film layer and the PE lower film layer, heating at 110-150deg.C for 7-18s, pressurizing at 70-120MPa for 8-22s, and pressurizing at 85-130MPa for 10-15s to obtain a primary product;
heating, embossing and rolling the initial product to obtain the high-performance grid composite film.
By adopting the technical scheme, when the woven silk screen is subjected to hot-pressing lamination with the PE upper film layer and the PE lower film layer, certain slippage occurs, so that a protective film formed by compounding PMMA and PVDF is attached to the woven silk screen, and when the woven silk screen is subjected to hot-pressing, the protective film is melted to generate adhesion effect on the woven silk screen, the PE upper film layer and the PE lower film layer, so that the woven silk screen is prevented from slipping, and the adhesive stability of the woven silk screen, the PE upper film layer and the PE lower film layer can be increased; the polyvinylidene fluoride has good acid and alkali resistance and thermal stability, excellent wear resistance and toughness, and the film surface and water have no hydrogen bond, so that the polyvinylidene fluoride has stronger hydrophobic effect, PMMA is used as a macromolecular polymer, the melt viscosity is very high, the mechanical strength is high, the rigidity is strong, the movement of a long molecular chain is difficult, when the polyvinylidene fluoride is extruded by external force, the same deformation degree is achieved, and the molecular chain has stronger tearing resistance because more capability is required for relaxation; the blend of PVDF and PMMA is cast onto the woven wire mesh after being melted, the woven wire mesh is wrapped by the hot melt component, the melt flow rate is high, the penetration effect on the woven wire mesh is generated, a firm mechanical effect is formed after solidification, the mechanical riveting effect of the woven wire mesh, the PE upper film layer and the PE lower film layer can be increased, the peeling strength is improved, and layering is not easy to generate; the PE lower film layer and the PE upper film layer are prepared by mixing LLDPE, LDPE, mPE and other components, and have high tearing strength and good mechanical properties.
Optionally, the protective film on one side of the woven wire mesh has a thickness of 20-30 μm.
Through adopting above-mentioned technical scheme, when the protection film of this thickness will contain the braided wire mesh of protection film and PE upper film layer, PE lower film layer hot pressing complex, can effectively bond braided wire mesh and PE upper film layer, PE lower film layer, prevent that braided wire mesh from appearing dislocation, fold, phenomenon such as uneven distribution and influence the performance of complex film when compounding with PE upper film layer, PE lower film layer.
Optionally, the mass ratio of the polyvinylidene fluoride to the polymethyl methacrylate is 7.5-8:2-2.5.
By adopting the technical scheme, the PVDF and PMMA with the dosage ratio can increase the bonding strength of the protective film during hot pressing, thereby improving the peeling strength of the woven silk screen, the PE upper film layer and the PE lower film layer and prolonging the service life of the high-performance grid composite film.
In summary, the present application has the following beneficial effects:
1. because chromic acid solution and PDMS solution are adopted to pretreat the woven silk screen, the surface roughness of the woven silk screen is increased, the contact area between the woven silk screen and the PE upper film layer and the PE lower film layer is increased, the woven silk screen is not easy to slip, and the PDMS has viscosity and can be adhered to the woven silk screen, so that the hydrophobicity of the woven silk screen is improved, the woven silk screen has the advantages of good compatibility and tight hot pressing when being in hot pressing compounding with the PE upper film and the PE lower film, layering is not easy to generate, and the repeated use effect is improved.
2. In the application, the method is preferably used for carrying out hydrothermal synthesis on titanium dioxide and evaporation fluorine plating, so that the woven silk screen after chromic acid solution and PDMS treatment is further improved, the titanium dioxide is arranged on the woven silk screen, the roughness of the surface of the woven silk screen can be increased, the titanium dioxide which is in a protruding shape on the surface of the woven silk screen can increase the interfacial binding force between the woven silk screen and the PE upper film layer and the PE lower film layer, in addition, the evaporation fluorine plating can improve the hydrophobicity of the titanium dioxide and the woven silk screen, improve the affinity of the woven silk screen and the film layer, and improve the composite compactness.
3. In the application, a protective film is preferably formed on the woven silk screen pretreated by chromic acid solution, PDMS and other components through tape casting, and is thermally fused when the woven silk screen is thermally pressed and compounded with the PE upper film layer and the PE lower film layer, so that the woven silk screen is positioned and bonded, the woven silk screen is prevented from sliding, the bonding fastness of the woven silk screen, the PE upper film layer and the PE lower film layer is improved, and layering is prevented.
Detailed Description
Examples
In the following examples, LDPE is selected from the group consisting of Yangshan petrochemical 18D075, LLDPE is selected from the group consisting of Yangzi petrochemical DFDA-7047, mPE is selected from the group consisting of Japanese three fine chemical sp1520, polyvinylidene fluoride is selected from the group consisting of Zhejiang giant JD-10, and polymethyl methacrylate is selected from the group consisting of Germany winning 8N.
Example 1: the high-performance grid composite film for the tire is 0.3mm in thickness and comprises a PE upper film layer, a PE lower film layer and a woven wire mesh positioned between the PE upper film layer and the PE lower film layer, wherein the thickness ratio of the PE upper film layer to the woven wire mesh to the west surface layer is 3:2:3, the mesh of the woven wire mesh is 0.05mm, the woven wire mesh is formed by overlapping and weaving ultrahigh molecular weight polyethylene fibers and polypropylene filaments, the diameter of the ultrahigh molecular weight polyethylene fibers is 15 mu m, and the diameter of the polypropylene filaments is 10 mu m; the woven wire mesh is pretreated by:
immersing the woven silk screen in chromic acid solution, carrying out ultrasonic treatment for 8min, washing with deionized water, drying, wherein the ultrasonic frequency is 100kHz, the ultrasonic temperature is 35 ℃, and the chromic acid solution is prepared by mixing potassium dichromate, deionized water and concentrated sulfuric acid in a mass ratio of 7:12:50;
dispersing PDMS and a curing agent into n-hexane, and carrying out ultrasonic treatment for 2 hours to prepare a dispersion liquid, wherein the concentration of the PDMS in the dispersion liquid is 0.8wt%, the curing agent is methyltriethoxysilane, and the mass ratio of the PDMS to the curing agent is 10:1;
and (3) placing the knitted silk screen treated by the chromic acid solution into the dispersion liquid, carrying out vacuum suction filtration and drying.
The preparation method of the high-performance grid composite film for the tire comprises the following steps:
PE upper film layer and PE lower film layer preparation: uniformly mixing 6kg of LDPE, 6kg of LLDPE, 1.6kg of mPE, 1.2kg of nano calcium carbonate and 0.05kg of plasticizer, heating to 220 ℃ for melting, extruding the melt into thick sheets through a casting machine die head auxiliary agent at the melting temperature of 250 ℃, longitudinally stretching for 1.8 times, transversely stretching for 5 times, and heat setting for 10s at 120 ℃ and 50MPa to obtain an upper PE film layer and a lower PE film layer, wherein the plasticizer is phthalic diester;
and (3) hot pressing and compounding: placing the woven silk screen between the PE upper film layer and the PE lower film layer, heating at 150 ℃ for 7s, pressurizing at 120MPa for 8s, and pressurizing at 130MPa for 10s to obtain a primary product;
embossing and rolling: and heating and embossing the initial product, wherein the heating temperature is 90 ℃, the speed is 1m/s, and rolling to obtain the high-performance grid composite film.
Example 2: the high-performance grid composite film for the tire is 0.5mm in thickness and comprises a PE upper film layer, a PE lower film layer and a woven wire mesh positioned between the PE upper film layer and the PE lower film layer, wherein the thickness ratio of the PE upper film layer to the woven wire mesh to the west surface layer is 3:2:3, the mesh of the woven wire mesh is 0.01mm, the woven wire mesh is formed by overlapping and weaving ultrahigh molecular weight polyethylene fibers and polypropylene filaments, the diameter of the ultrahigh molecular weight polyethylene fibers is 15 mu m, and the diameter of the polypropylene filaments is 10 mu m; the woven wire mesh is pretreated by:
immersing the woven silk screen in chromic acid solution, carrying out ultrasonic treatment for 3min, washing with deionized water, drying, wherein the ultrasonic frequency is 100kHz, the ultrasonic temperature is 35 ℃, and the chromic acid solution is prepared by mixing potassium dichromate, deionized water and concentrated sulfuric acid in a mass ratio of 7:12:50;
dispersing PDMS and a curing agent into n-hexane, and carrying out ultrasonic treatment for 1h to prepare a dispersion liquid, wherein the concentration of the PDMS in the dispersion liquid is 0.6wt%, the curing agent is methyltriethoxysilane, and the mass ratio of the PDMS to the curing agent is 10:1;
and (3) placing the knitted silk screen treated by the chromic acid solution into the dispersion liquid, carrying out vacuum suction filtration and drying.
The preparation method of the high-performance grid composite film for the tire comprises the following steps:
PE upper film layer and PE lower film layer preparation: uniformly mixing 2kg of LDPE, 2kg of LLDPE, 0.5kg of mPE, 0.6kg of nano calcium carbonate and 0.01kg of plasticizer, heating to 220 ℃ for melting, extruding the melt into thick sheets through a casting machine die head auxiliary agent at the melting temperature of 250 ℃, longitudinally stretching for 1.8 times, transversely stretching for 5 times, and heat setting for 10s at 120 ℃ and 50MPa to obtain an upper PE film layer and a lower PE film layer, wherein the plasticizer is phthalic diester;
and (3) hot pressing and compounding: placing the woven silk screen between the PE upper film layer and the PE lower film layer, heating at 110 ℃ for 18s, pressurizing at 70MPa for 22s, and pressurizing at 85MPa for 15s to obtain a primary product;
embossing and rolling: and heating and embossing the initial product, wherein the heating temperature is 90 ℃, the speed is 1m/s, and rolling to obtain the high-performance grid composite film.
Example 3: the difference from example 1 is that carbon nanotubes are added to the dispersion, and the mass ratio of carbon nanotubes to PDMS is 1:0.5.
Example 4: the difference from example 1 is that the woven wire mesh is subjected to dispersion vacuum filtration and then subjected to the following treatment:
placing the woven silk screen obtained by vacuum filtration into deionized water with the mass being 2 times of that of the woven silk screen, adding an ethanol solution of tetrabutyl titanate with the concentration of 0.3M into the deionized water, adjusting the pH value to 7, reacting for 24 hours at the temperature of 100 ℃, cooling, drying, placing the dried woven silk screen above PFDS, and evaporating for 30 minutes under the condition of 110 ℃ and 70kPa in vacuum, wherein the mass ratio of the woven silk screen to the ethanol solution of tetrabutyl titanate is 1:4.
Example 5: the difference between the high-performance mesh composite film for tires and the example 4 is that the following treatment is further carried out after the woven wire mesh is subjected to dispersion liquid vacuum suction filtration:
the woven wire mesh obtained by vacuum filtration was placed over PFDS and evaporated under vacuum at 110℃for 30min at 70 kPa.
Example 6: the difference between the high-performance mesh composite film for tires and the example 4 is that the following treatment is further carried out after the woven wire mesh is subjected to dispersion liquid vacuum suction filtration:
the woven silk screen obtained by vacuum filtration is placed into deionized water with the mass being 2 times of that of the woven silk screen, an ethanol solution of tetrabutyl titanate with the concentration of 0.3M is added into the woven silk screen, the pH value is regulated to 7, the woven silk screen is reacted for 24 hours at the temperature of 100 ℃, and the woven silk screen is cooled and dried.
Example 7: the high performance mesh composite film for tires is different from example 1 in that the preparation method comprises the following steps:
after the woven silk screen is pretreated, a protective film is formed on the surface of the woven silk screen, specifically: mixing polyvinylidene fluoride and polymethyl methacrylate according to the mass ratio of 7.5:2.5, extruding, granulating, casting onto a woven wire mesh, and forming a protective film with the single-side thickness of 30 mu m on the woven wire mesh; and then carrying out hot-pressing compounding, embossing and rolling on the woven silk screen with the protective films on the two sides, the PE upper film layer and the PE lower film layer.
Example 8: the high performance mesh composite film for tires is different from example 1 in that the preparation method comprises the following steps:
after the woven silk screen is pretreated, a protective film is formed on the surface of the woven silk screen, specifically: mixing polyvinylidene fluoride and polymethyl methacrylate according to the mass ratio of 8:2, extruding, granulating, and casting onto a woven wire mesh to form a protective film with the single-side thickness of 20 mu m on the woven wire mesh; and then carrying out hot-pressing compounding, embossing and rolling on the woven silk screen with the protective films on the two sides, the PE upper film layer and the PE lower film layer.
Example 9: the difference from example 1 is that the dispersion liquid contains carbon nanotubes, and the mass ratio of the carbon nanotubes to PDMS is 1:0.5; and the woven silk screen is subjected to dispersion liquid vacuum suction filtration and then is subjected to the following treatment: placing the woven silk screen obtained by vacuum filtration into deionized water with the mass being 2 times of that of the woven silk screen, adding an ethanol solution of tetrabutyl titanate with the concentration of 0.3M into the deionized water, adjusting the pH value to 7, reacting for 24 hours at the temperature of 100 ℃, cooling, drying, placing the dried woven silk screen above PFDS, and evaporating for 30 minutes under the condition of 110 ℃ and 70kPa in vacuum, wherein the mass ratio of the woven silk screen to the ethanol solution of tetrabutyl titanate is 1:4.
Example 10: the difference from example 1 is that the dispersion liquid contains carbon nanotubes, and the mass ratio of the carbon nanotubes to PDMS is 1:0.5; after the woven silk screen is pretreated, a protective film is formed on the surface of the woven silk screen, specifically: mixing polyvinylidene fluoride and polymethyl methacrylate according to the mass ratio of 7.5:2.5, extruding, granulating, casting onto a woven wire mesh, and forming a protective film with the single-side thickness of 30 mu m on the woven wire mesh; and then carrying out hot-pressing compounding, embossing and rolling on the woven silk screen with the protective films on the two sides, the PE upper film layer and the PE lower film layer.
Example 11: the difference from example 1 is that the woven wire mesh is subjected to dispersion vacuum filtration and then subjected to the following treatment: placing the woven silk screen obtained by vacuum filtration into deionized water with the mass being 2 times of that of the woven silk screen, adding an ethanol solution of tetrabutyl titanate with the concentration of 0.3M into the deionized water, adjusting the pH value to 7, reacting for 24 hours at the temperature of 100 ℃, cooling, drying, placing the dried woven silk screen above PFDS, and evaporating for 30 minutes under the condition of 110 ℃ and 70kPa in vacuum, wherein the mass ratio of the woven silk screen to the ethanol solution of tetrabutyl titanate is 1:4. After the woven silk screen is pretreated, a protective film is formed on the surface of the woven silk screen, specifically: mixing polyvinylidene fluoride and polymethyl methacrylate according to the mass ratio of 7.5:2.5, extruding, granulating, casting onto a woven wire mesh, and forming a protective film with the single-side thickness of 30 mu m on the woven wire mesh; and then carrying out hot-pressing compounding, embossing and rolling on the woven silk screen with the protective films on the two sides, the PE upper film layer and the PE lower film layer.
Example 12: the difference from example 1 is that the dispersion liquid contains carbon nanotubes, and the mass ratio of the carbon nanotubes to PDMS is 1:0.5; and the woven silk screen is subjected to dispersion liquid vacuum suction filtration and then is subjected to the following treatment:
placing the woven silk screen obtained by vacuum filtration into deionized water with the mass being 2 times of that of the woven silk screen, adding an ethanol solution of tetrabutyl titanate with the concentration of 0.3M into the deionized water, adjusting the pH value to 7, reacting for 24 hours at the temperature of 100 ℃, cooling, drying, placing the dried woven silk screen above PFDS, and evaporating for 30 minutes under the condition of 110 ℃ and 70kPa in vacuum, wherein the mass ratio of the woven silk screen to the ethanol solution of tetrabutyl titanate is 1:4; and a protective film is formed on the pretreated woven silk screen, polyvinylidene fluoride and polymethyl methacrylate are mixed according to the mass ratio of 8:2, extrusion granulation is carried out, casting is carried out on the woven silk screen, and the protective film with the single-side thickness of 20 mu m is formed on the woven silk screen; and then carrying out hot-pressing compounding, embossing and rolling on the woven silk screen with the protective films on the two sides, the PE upper film layer and the PE lower film layer.
Comparative example
Comparative example 1: the high performance mesh composite film for tires is different from example 1 in that the woven wire mesh is subjected to the following pretreatment:
immersing the woven silk screen in chromic acid solution, carrying out ultrasonic treatment for 8min, washing with deionized water, drying, wherein the ultrasonic frequency is 100kHz, the ultrasonic temperature is 35 ℃, and the chromic acid solution is prepared by mixing potassium dichromate, deionized water and concentrated sulfuric acid in a mass ratio of 7:12:50.
Comparative example 2: the high performance mesh composite film for tires is different from example 1 in that the woven wire mesh is subjected to the following pretreatment:
dispersing PDMS and a curing agent into n-hexane, and carrying out ultrasonic treatment for 2 hours to prepare a dispersion liquid, wherein the concentration of the PDMS in the dispersion liquid is 0.8wt%, the curing agent is methyltriethoxysilane, and the mass ratio of the PDMS to the curing agent is 10:1;
and (3) placing the woven silk screen into the dispersion liquid, carrying out vacuum filtration and drying.
Comparative example 3: the utility model provides a barrier film for rubber film, includes the PE membrane that is located both sides and is located the net in the middle, and the ratio of PE membrane is: 85% of LDPE, 5% of HDPE, 5% of LLDPE and 15% of EPDM; the PE film is provided with a light film on two sides, the material of the grid 2 is PP, the holes are 3mm, the grid lines are round wires, the diameter of the wires is 0.1mm, and the three layers of materials are tightly compounded together by adopting a coating method.
Comparative example 4: the thickness of the commercial PE diamond grid isolating film is 0.16mm.
Performance test
The performance of the high performance mesh composite film was measured according to the following method, and the measurement results are recorded in table 1.
1. Tensile strength: the tensile strength of the high-performance grid composite film is detected according to GB/T13022-1991 tensile property test method of plastic film;
2. elongation at break: the elongation at break of the high-performance grid composite film is detected according to GB/T13022-1991 tensile Property test method of Plastic film;
3. tear strength: according to QB/T1130-1991 test method for Right-angle tear Property of Plastic
4. Peel strength: the peel strength of the woven wire mesh and the PE lower film layer or PE upper film layer was measured according to GB/T8808-1988 Soft composite Peel test method.
Table 1 high performance mesh composite membrane performance test for tire
In combination with the contents of table 1 and examples 1-2, examples 1-2 pretreat the woven wire mesh with chromic acid, PDMS, etc., and the produced high-performance mesh composite membrane has high tensile strength, elongation at break and tear strength, strong tear resistance, difficult generation of wrinkles, large peel strength of the woven wire mesh with PE upper membrane layer and PE lower membrane layer, tight adhesion, difficult delamination and long repeated service life.
Example 3 also contained carbon nanotubes in the dispersion, and the tensile strength and elongation at break of the high performance mesh composite film prepared in example 3 were increased, tear resistance was increased, peel strength of the woven wire mesh to the PE upper film layer and PE lower film layer was increased, and adhesiveness was enhanced as shown in table 1.
In example 4, compared with example 1, the pretreatment of the woven wire mesh further comprises a step of hydrothermally synthesizing titanium dioxide, and as shown in table 1, the tear resistance of the high-performance grid composite film in example 4 is enhanced, the peeling strength is enhanced, the bonding force between the woven wire mesh and the PE lower film layer and between the woven wire mesh and the PE lower film layer are enhanced, and delamination is not easy to occur.
In example 5, compared with example 4, titanium dioxide was not synthesized on the surface of the woven wire mesh, and table 1 shows that the peel strength of the woven wire mesh and the PE upper film layer and the PE lower film layer was reduced and the tear strength was reduced in the high performance mesh composite film prepared in example 5.
Example 6 compared with example 4, the high performance mesh composite film prepared in example 6, in which PFDS was not evaporated under vacuum on the woven wire mesh loaded with silica, had reduced peel strength from the woven wire mesh to the PE lower film layer and PE upper film layer, and reduced tear resistance.
In example 7 and example 8, the protective films were formed on both sides of the pretreated woven wire mesh, and the high-performance mesh composite films prepared in example 7 and example 8 had increased mechanical strength such as tensile strength, improved peel strength, tight adhesion, and less delamination, as compared with example 1.
In example 9, not only the dispersion liquid also contains carbon nanotubes, but also the step of hydrothermally synthesizing titanium dioxide is included in the pretreatment of the woven silk screen, and various properties of the mesh composite membrane prepared in example 9 are improved compared with those of examples 1, 3 and 4.
In example 10, the woven wire mesh was pretreated with a dispersion containing carbon nanotubes, and the woven wire mesh pretreatment further included a step of hydrothermally synthesizing titanium dioxide, and compared with examples 1, 4 and 7, the woven wire mesh had an increased peel strength from the PE upper film layer and the PE lower film layer, and an enhanced tear resistance.
In example 11, compared with example 1, not only the ultra-high molecular weight polyethylene fiber was pretreated, and after the woven wire mesh was produced, the treatment was performed with chromic acid or the like, but also a protective film was formed on the woven wire mesh, and in comparison with example 4 and example 7, the peel strength between the woven wire mesh and the PE upper film layer and PE lower film layer was increased, the adhesion was tighter, and delamination was less likely.
In example 12, compared with example 1, the dispersion liquid contains carbon nanotubes, the pretreatment of the woven silk screen further comprises the step of hydrothermally synthesizing titanium dioxide, and a protective film is formed on the woven silk screen, and compared with example 3, example 4 and example 7, the tensile strength, elongation at break, tear resistance and peel strength of the prepared high-performance grid composite film are all increased, and each performance is improved.
Comparative example 1 the hydrophobicity of the woven wire mesh was improved without using PDMS and a curing agent when the woven wire mesh was pretreated as compared with example 1, and it is shown in table 1 that the woven wire mesh of the mesh composite film of comparative example 1 was reduced in peel strength from the PE lower film layer and the PE upper film layer, and the adhesion tightness was lowered, and delamination was likely to occur.
In comparative example 2, the woven wire mesh was not treated with chromic acid solution, and only the PDMS-containing dispersion was suction-filtered on the surface thereof, but the peel strength of the composite film was significantly reduced, although the tensile strength of the composite film was increased, as compared with example 1.
Comparative example 3 is a barrier film containing a mesh prepared in the prior art, which has small peel strength between the mesh and the PE film, poor adhesive strength, and easy delamination.
Comparative example 4 is a commercial mesh PE separator, which has low tensile strength and elongation at break, poor peel strength, and is easily delaminated.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.

Claims (7)

1. The grid composite film for the tire is characterized by comprising a PE upper film layer, a PE lower film layer and a woven wire mesh positioned between the PE upper film layer and the PE lower film layer, wherein the woven wire mesh is formed by overlapping and weaving ultrahigh molecular weight polyethylene fibers and polypropylene filaments, and the woven wire mesh is subjected to the following pretreatment:
immersing the woven silk screen in chromic acid solution, performing ultrasonic treatment for 3-8min, cleaning, and drying;
dispersing PDMS and a curing agent into n-hexane, and performing ultrasonic treatment for 1-2 hours to prepare a dispersion liquid, wherein the dispersion liquid also contains carbon nanotubes, and the mass ratio of the carbon nanotubes to the PDMS is 1:0.3-0.5;
placing the braided wire mesh treated by chromic acid solution into dispersion liquid, vacuum filtering and drying;
the pretreatment of the woven silk screen further comprises the following steps:
placing the woven silk screen obtained after vacuum filtration into deionized water, adding tetrabutyl titanate ethanol solution, adjusting pH to 7, reacting at 100-110deg.C for 20-24h, cooling, drying, placing above PFDS, and vacuum evaporating at 100-110deg.C under 70-75kPa for 20-30min.
2. The mesh composite film for a tire according to claim 1, wherein: the concentration of PDMS in the dispersion is 0.6 to 0.8wt%.
3. The mesh composite film for a tire according to claim 1, wherein the mesh of the woven wire net is 0.01 to 0.05mm.
4. The grid composite film for a tire according to claim 1, wherein the thickness of the composite film is 0.3 to 0.5mm.
5. The method for producing a mesh composite film for a tire according to any one of claims 1 to 4, comprising the steps of:
mixing polyvinylidene fluoride and polymethyl methacrylate, extruding and granulating, and casting to two sides of a woven silk screen to form protective films on two sides of the woven silk screen;
mixing 2-6 parts of LDPE, 2.5-6 parts of LLDPE, 0.5-1.6 parts of mPE, 0.6-1.2 parts of nano calcium carbonate and 0.01-0.05 parts of plasticizer by weight, melting, extruding, stretching and shaping to prepare an upper PE film layer and a lower PE film layer;
placing the woven silk screen between the PE upper film layer and the PE lower film layer, heating at 110-150deg.C for 7-18s, pressurizing at 70-120MPa for 8-22s, and pressurizing at 85-130MPa for 10-15s to obtain a primary product;
heating, embossing and rolling the initial product to obtain the grid composite film.
6. The method for producing a mesh composite film for a tire according to claim 5, wherein the protective film thickness on the woven wire mesh side is 20 to 30 μm.
7. The method for producing a mesh composite film for a tire according to claim 5, wherein the mass ratio of polyvinylidene fluoride to polymethyl methacrylate is 7.5 to 8:2 to 2.5.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1962261A (en) * 2006-12-05 2007-05-16 青岛文武港橡塑有限公司 Separation film for rubber film and its uses
KR20170123407A (en) * 2016-04-28 2017-11-08 재단법인 한국탄소융합기술원 An electrically conductive fabric comprising metal-plated glass fiber, a process for preparing the same, a process for preparing a FRP prepreg using the same
CN112647287A (en) * 2020-12-17 2021-04-13 中国科学院过程工程研究所 Super-hydrophobic material with hierarchical coarse structure and preparation method and application thereof
CN114960208A (en) * 2022-05-30 2022-08-30 中国人民解放军92228部队 Wear-resistant resin coating applied to surface of ultra-high molecular weight polyethylene fiber cable rope and coating process thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7087135B2 (en) * 2003-11-14 2006-08-08 Bio Med Sciences, Inc. Process for the manufacture of interpenetrating polymer network sheeting and useful articles thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1962261A (en) * 2006-12-05 2007-05-16 青岛文武港橡塑有限公司 Separation film for rubber film and its uses
KR20170123407A (en) * 2016-04-28 2017-11-08 재단법인 한국탄소융합기술원 An electrically conductive fabric comprising metal-plated glass fiber, a process for preparing the same, a process for preparing a FRP prepreg using the same
CN112647287A (en) * 2020-12-17 2021-04-13 中国科学院过程工程研究所 Super-hydrophobic material with hierarchical coarse structure and preparation method and application thereof
CN114960208A (en) * 2022-05-30 2022-08-30 中国人民解放军92228部队 Wear-resistant resin coating applied to surface of ultra-high molecular weight polyethylene fiber cable rope and coating process thereof

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