CN114872411A - PVDC (polyvinyl dichloride) and PVC (polyvinyl chloride) coated high-barrier sandwich mesh cloth and preparation method thereof - Google Patents

PVDC (polyvinyl dichloride) and PVC (polyvinyl chloride) coated high-barrier sandwich mesh cloth and preparation method thereof Download PDF

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Publication number
CN114872411A
CN114872411A CN202210385091.XA CN202210385091A CN114872411A CN 114872411 A CN114872411 A CN 114872411A CN 202210385091 A CN202210385091 A CN 202210385091A CN 114872411 A CN114872411 A CN 114872411A
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Prior art keywords
parts
pvc
mesh cloth
adhesive film
layer
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Inventor
廖世本
齐宏钧
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Guangdong Plato Plastic Co ltd
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Guangdong Plato Plastic Co ltd
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Priority to CN202210385091.XA priority Critical patent/CN114872411A/en
Publication of CN114872411A publication Critical patent/CN114872411A/en
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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
    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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
    • 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
    • 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
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/162—Cleaning
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J127/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Adhesives based on derivatives of such polymers
    • C09J127/02—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J127/04—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Adhesives based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C09J127/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/10—Adhesives in the form of films or foils without carriers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • 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
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2260/046—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
    • 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
    • B32B2262/0276—Polyester fibres
    • B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • 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
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • 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
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2217—Oxides; Hydroxides of metals of magnesium
    • C08K2003/2224—Magnesium hydroxide
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to the technical field of mesh fabric, in particular to a PVDC and PVC coated high-barrier mesh fabric and a preparation method thereof, wherein the method comprises the following steps: the PVC fabric comprises a polyester fiber mesh cloth and a PVC adhesive film, wherein the PVC adhesive film is uniformly adhered to the bottom layer and the surface layer of the polyester fiber mesh cloth, and the surface of the PVC adhesive film is coated with PVDC emulsion; the polyester fiber mesh cloth is padded and then coated with the PVC paste, so that the barrier property of the polyester fiber mesh cloth is improved; by coating the PVDC emulsion on the surface, the PVDC emulsion has the advantages of flame resistance, corrosion resistance, good air tightness and the like, so that the high barrier property of the sandwich mesh cloth is further improved.

Description

PVDC (polyvinyl dichloride) and PVC (polyvinyl chloride) coated high-barrier sandwich mesh cloth and preparation method thereof
Technical Field
The invention relates to the technical field of mesh fabric, in particular to a PVDC and PVC coated high-barrier mesh fabric and a preparation method thereof.
Background
The sandwich mesh cloth is a material which takes textile mesh cloth as a base material and is compounded with one or more layers of materials with different physical properties on two sides of the mesh cloth. The existing PVC net clamping cloth is mainly PVC net clamping cloth which has good acid and alkali resistance, high temperature resistance and other properties, but the existing PVC net clamping cloth still has the defect of poor barrier property.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides PVDC and PVC coated high-barrier sandwich mesh cloth with high barrier property and a preparation method thereof.
The technical scheme of the invention is as follows: PVDC presss from both sides screen cloth with high resistant of PVC coating type, and it includes: the PVC fabric comprises a polyester fiber mesh cloth and a PVC adhesive film, wherein the PVC adhesive film is uniformly adhered to the bottom layer and the surface layer of the polyester fiber mesh cloth, and the surface of the PVC adhesive film is coated with PVDC emulsion; the PVC adhesive film specifically comprises the following raw materials in percentage by mass: suspension method-polyvinyl chloride resin powder PVC75-78 parts, diisononyl phthalate DINP34-36 parts, trioctyl trimellitate TOTM15.5-16.3 parts, epoxidized soybean oil EPO1.5-1.6 parts, ultraviolet absorbent UV-P0.22-0.25 part, antioxidant 10760.11-0.13 part, barium-zinc liquid stabilizer BZ1.5-1.6 parts, antimonous oxide 3.75-4 parts, magnesium hydroxide 9.37-9.84 parts, organic pigment 9-9.53 parts, PVDC emulsion 3.5-3.8 parts.
Further, the preparation of the PVC adhesive film comprises the following steps:
a1, preparing materials
Blending 75-78 parts of suspension-polyvinyl chloride resin powder PVC, 34-36 parts of diisononyl phthalate DINP, 15.5-16.3 parts of trioctyl trimellitate TOTM, 1.5-1.6 parts of epoxidized soybean oil EPO, 0.22-0.25 part of ultraviolet absorbent UV-P, 10760.11-0.13 part of antioxidant, 1.5-1.6 parts of barium-zinc liquid stabilizer BZ, 3.75-4 parts of antimony trioxide, 9.37-9.84 parts of magnesium hydroxide, 9-9.53 parts of organic pigment and 3.5-3.8 parts of PVDC emulsion to form a mixed material;
a2, high speed mixing
Putting the mixed materials into a high-speed blending machine, and stirring for 10-15 minutes at the temperature of 100-140 ℃ to form mixed jelly;
a3, screw extrusion
Putting the mixed jelly into an extruder, and extruding by a screw to obtain slurry, wherein the extrusion temperature is 120-160 ℃;
a4, filtration
Filtering the extruded slurry on a filter screen to obtain pasty coating slurry;
a5 rubber refining
Injecting the pasty coating slurry into a high-temperature roll refining furnace for pressure refining, wherein the reaction temperature is 160-180 ℃, the pressure is 60MPa, and the reaction lasts for 3 hours;
a6 calendering to form a film
Calendering and molding the slurry obtained in A5 by a calender to prepare a semi-finished adhesive film with the thickness of 5mm-10mm, wherein the screw temperature is 220-240 ℃, the conveying section temperature is 230-250 ℃, the extrusion pressure is 50-60 MPa, the drying temperature is 80-100 ℃, the drying time is 4-6 h, and the production speed is 5-30 m/min;
a7, embossing
Carrying out embossing treatment on the upper surface and the lower surface of the semi-finished product adhesive film obtained in A6 by using an embossing roller of an embossing machine to obtain a printed semi-finished product PVC adhesive film;
a8, cooling and shaping
Fully cooling and shaping the semi-finished PVC adhesive film obtained in A7 through a cooling roller to form a PVC adhesive film, and pushing an embossing roller by adopting oil pressure, wherein the oil pressure is adjusted to be 3-5 Mpa;
further, the preparation method of the sandwich mesh cloth comprises the following steps:
b1, finishing the mesh fabric
Placing the polyester fiber mesh in a cleaning machine for surface cleaning and performing electrostatic dust removal treatment;
b2 padding
Placing the polyester fiber mesh cloth obtained in the step B1 in a padding machine, wherein the padding machine comprises the following raw materials in parts by weight: 50-52.5 parts of emulsion-polyvinyl chloride resin powder suspension, 20-21 parts of diisononyl phthalate DINP, 78-22 parts of trioctyl trimellitate TOTM21-22 parts, 1.5-1.6 parts of antimony trioxide, 5-5.5 parts of magnesium hydroxide, 1.5-1.1 parts of barium-zinc liquid stabilizer BZ1-1.1 parts of MDX adhesive (isocyanate) and 1.5-1.8 parts of MDX adhesive (isocyanate) are put into a high-speed blender and stirred at the temperature of 100-;
b3, heating and plasticizing
Heating and plasticizing the padded polyester fiber mesh cloth obtained from B2 to form a heated and plasticized mesh fabric;
b4, coating
Coating PVC paste on the surface of the heated and plasticized sandwich mesh cloth obtained in B3 to form the sandwich mesh cloth coated with the PVC paste, wherein the PVC paste comprises the following raw materials in percentage by mass: 50-52.5 parts of emulsion-polyvinyl chloride resin powder suspension, 20-21 parts of diisononyl phthalate DINP, 21-22 parts of trioctyl trimellitate TOTM, 1.5-1.6 parts of antimony trioxide, 5-5.5 parts of magnesium hydroxide, 1-1.1 parts of barium-zinc liquid stabilizer BZ and 1.5-1.8 parts of MDX adhesive (isocyanate), and the raw materials are put into a high-speed blender and stirred for 10-15 minutes at the temperature of 140 ℃ of 100-.
B5, secondary heating and plasticizing
Carrying out secondary heating and plasticizing on the mesh fabric coated with the PVC paste on the surface obtained from B4 to form a secondarily heated and plasticized mesh fabric;
b6 bottom layer Heat application
Attaching a PVC film to the bottom surface of the sandwich mesh cloth subjected to secondary heating plasticization at high temperature to form the sandwich mesh cloth attached with a single-layer PVC film;
b7, surface layer thermal bonding
Laminating a PVC adhesive film on the top surface of the laminated mesh fabric laminated with the single-layer PVC adhesive film at a high temperature to form the laminated mesh fabric laminated with the double-layer PVC adhesive film;
b8, embossing
Carrying out upper and lower surface embossing treatment on the screen cloth laminated with the double-layer PVC adhesive film obtained from B7 by using an embossing roller of an embossing machine to obtain printed semi-finished screen cloth;
b9 surface treatment of bottom layer
Coating the PVDC emulsion on the bottom layer of the semi-finished sandwich mesh cloth obtained in the step B7, and then carrying out drying treatment to form a single-layer coated sandwich mesh cloth;
b10 surface treatment of surface layer
Coating the surface of the single-layer coated sandwich mesh cloth obtained in the step B9 with PVDC emulsion, and then carrying out drying treatment to form a double-layer coated sandwich mesh cloth;
b11, cooling and shaping
Fully cooling and shaping the semi-finished product mesh fabric obtained from B10 through a cooling roller, and pushing an embossing roller by adopting oil pressure, wherein the oil pressure is adjusted to be 3-5 Mpa;
b12, product
And (4) inspecting the finished sandwich mesh cloth obtained in the step B11, and rolling into a finished product.
The invention has the beneficial effects that: the polyester fiber mesh cloth is padded and then coated with the PVC paste, so that the barrier property of the polyester fiber mesh cloth is improved; by coating the PVDC emulsion on the surface, the PVDC emulsion has the advantages of flame resistance, corrosion resistance, good air tightness and the like, so that the high barrier property of the sandwich mesh cloth is further improved.
Detailed Description
The following further illustrates embodiments of the invention:
example 1
PVDC presss from both sides screen cloth with high resistant of PVC coating type, and it includes: the PVC fabric comprises a polyester fiber mesh and a PVC film, wherein the PVC film is uniformly adhered to the bottom layer and the surface layer of the polyester fiber mesh, and the surface of the PVC film is coated with PVDC emulsion; the PVC adhesive film specifically comprises the following raw materials in percentage by mass: suspension method-polyvinyl chloride resin powder PVC75 parts, diisononyl phthalate DINP34 parts, trioctyl trimellitate TOTM15.5 parts, epoxidized soybean oil EPO1.5 parts, ultraviolet absorbent UV-P0.22 parts, antioxidant 10760.11 parts, barium-zinc liquid stabilizer BZ1.5 parts, antimony trioxide 3.75 parts, magnesium hydroxide 9.37 parts, organic pigment 9 parts, and PVDC emulsion 3.5 parts.
Further, the preparation of the PVC adhesive film comprises the following steps:
a1, preparing materials
Blending materials of 75-78 parts of suspension-polyvinyl chloride resin powder, 34 parts of diisononyl phthalate DINP, 15.5 parts of trioctyl trimellitate TOTM, 1.5 parts of epoxidized soybean oil EPO, 0.22 part of ultraviolet absorbent UV-P, 10760.11 parts of antioxidant, 1.5 parts of barium-zinc liquid stabilizer BZ, 3.75 parts of antimony trioxide, 9.37 parts of magnesium hydroxide, 9 parts of organic pigment and 3.5 parts of PVDC emulsion to form a mixed material;
a2, high speed mixing
Putting the mixed materials into a high-speed blending machine, and stirring for 10 minutes at the temperature of 100-140 ℃ to form mixed jelly;
a3, screw extrusion
Putting the mixed jelly into an extruder, and extruding by a screw to obtain slurry, wherein the extrusion temperature is 120 ℃;
a4, filtering
Filtering the extruded slurry on a filter screen to obtain pasty coating slurry;
a5 rubber refining
Injecting the pasty coating slurry into a high-temperature roll refining furnace for pressure refining, wherein the reaction temperature is 160 ℃, the pressure is 60MPa, and the reaction lasts for 3 hours;
a6 calendering to form a film
Calendering and molding the slurry obtained in A5 by a calender to prepare a semi-finished adhesive film with the thickness of 5mm, wherein the screw temperature is 220 ℃, the conveying section temperature is 230 ℃, the extrusion pressure is 50MPa, the drying temperature is 80 ℃, the drying time is 4h, and the production speed is 5 m/min;
a7, embossing
Carrying out embossing treatment on the upper surface and the lower surface of the semi-finished product adhesive film obtained in A6 by using an embossing roller of an embossing machine to obtain a printed semi-finished product PVC adhesive film;
a8, cooling and shaping
Fully cooling and shaping the semi-finished PVC adhesive film obtained in A7 through a cooling roller to form a PVC adhesive film, and pushing the embossing roller by adopting oil pressure, wherein the oil pressure is adjusted to be 3 Mpa;
further, the preparation method of the sandwich mesh cloth comprises the following steps:
b1, finishing the mesh fabric
Placing the polyester fiber mesh cloth in a cleaning machine for surface cleaning and carrying out electrostatic dust removal treatment;
b2 padding
Placing the polyester fiber mesh cloth obtained in the step B1 in a padding machine, wherein the padding machine comprises the following raw materials in parts by weight: 50 parts of emulsion-polyvinyl chloride resin powder suspension, 20 parts of diisononyl phthalate DINP, 21 parts of trioctyl trimellitate TOTM, 1.5 parts of antimony trioxide, 5 parts of magnesium hydroxide, 1 part of barium-zinc liquid stabilizer BZ and 1.5 parts of MDX adhesive (isocyanate), putting the raw materials into a high-speed blender, stirring for 10 minutes at the temperature of 100 ℃, putting the formed PVC paste into a padding machine, and attaching the PVC paste to the surface of a polyester fiber mesh cloth to obtain the padded polyester fiber mesh cloth;
b3, heating and plasticizing
Heating and plasticizing the padded polyester fiber mesh cloth obtained from B2 to form a heated and plasticized mesh fabric;
b4, coating
Coating PVC paste on the surface of the heated and plasticized sandwich mesh cloth obtained in B3 to form the sandwich mesh cloth coated with the PVC paste, wherein the PVC paste comprises the following raw materials in percentage by mass: 50 parts of emulsion-polyvinyl chloride resin powder suspension, 20 parts of diisononyl phthalate DINP, 21 parts of trioctyl trimellitate TOTM, 1.5 parts of antimony trioxide, 5 parts of magnesium hydroxide, 1 part of barium-zinc liquid stabilizer BZ and 1.5 parts of MDX adhesive (isocyanate), and the raw materials are put into a high-speed blender and stirred for 10 minutes at the temperature of 100 ℃ to form the PVC paste.
B5, secondary heating and plasticizing
Carrying out secondary heating and plasticizing on the mesh fabric coated with the PVC paste on the surface obtained from B4 to form a secondarily heated and plasticized mesh fabric;
b6 bottom layer Heat application
Attaching a PVC film to the bottom surface of the sandwich mesh cloth subjected to secondary heating plasticization at high temperature to form the sandwich mesh cloth attached with a single-layer PVC film;
b7, surface layer thermal bonding
Laminating a PVC adhesive film on the top surface of the laminated mesh fabric laminated with the single-layer PVC adhesive film at a high temperature to form the laminated mesh fabric laminated with the double-layer PVC adhesive film;
b8, embossing
Carrying out upper and lower surface embossing treatment on the screen cloth laminated with the double-layer PVC adhesive film obtained from B7 by using an embossing roller of an embossing machine to obtain printed semi-finished screen cloth;
b9 surface treatment of bottom layer
Coating the PVDC emulsion on the bottom layer of the semi-finished sandwich mesh cloth obtained in the step B7, and then carrying out drying treatment to form a single-layer coated sandwich mesh cloth;
b10 surface treatment of surface layer
Coating the surface of the single-layer coated sandwich mesh cloth obtained in the step B9 with PVDC emulsion, and then carrying out drying treatment to form a double-layer coated sandwich mesh cloth;
b11, cooling and shaping
Fully cooling and shaping the semi-finished product mesh fabric obtained from B10 through a cooling roller, and pushing an embossing roller by adopting oil pressure, wherein the oil pressure is adjusted to be 3-5 Mpa;
b12, product
And (4) inspecting the finished sandwich mesh cloth obtained in the step B11, and rolling into a finished product.
Example 2
PVDC presss from both sides screen cloth with high resistant of PVC coating type, and it includes: the PVC fabric comprises a polyester fiber mesh cloth and a PVC adhesive film, wherein the PVC adhesive film is uniformly adhered to the bottom layer and the surface layer of the polyester fiber mesh cloth, and the surface of the PVC adhesive film is coated with PVDC emulsion; the PVC adhesive film specifically comprises the following raw materials in percentage by mass: suspension method-polyvinyl chloride resin powder PVC77 parts, diisononyl phthalate DINP35 parts, trioctyl trimellitate TOTM16 parts, epoxidized soybean oil EPO1.55 parts, ultraviolet absorbent UV-P0.22 parts, antioxidant 10760.12 parts, barium-zinc liquid stabilizer BZ1.55 parts, antimony trioxide 3.9 parts, magnesium hydroxide 9.8 parts, organic pigment 9.2 parts, and PVDC emulsion 3.7 parts.
Further, the preparation of the PVC adhesive film comprises the following steps:
a1, preparing materials
Blending materials of a suspension method, namely polyvinyl chloride resin powder PVC77 parts, diisononyl phthalate DINP35 parts, trioctyl trimellitate TOTM16 parts, epoxidized soybean oil EPO1.55 parts, ultraviolet absorbent UV-P0.22 parts, antioxidant 10760.12 parts, barium-zinc liquid stabilizer BZ1.55 parts, antimony trioxide 3.9 parts, magnesium hydroxide 9.8 parts, organic pigment 9.2 parts and PVDC emulsion 3.7 parts to form a mixed material;
a2, high speed mixing
Putting the mixed materials into a high-speed blender, and stirring for 12 minutes at the temperature of 120 ℃ to form mixed jelly;
a3, screw extrusion
Putting the mixed jelly into an extruder, and extruding by a screw to obtain slurry, wherein the extrusion temperature is 140 ℃;
a4, filtration
Filtering the extruded slurry on a filter screen to obtain pasty coating slurry;
a5 rubber refining
Injecting the pasty coating slurry into a high-temperature roll refining furnace for pressure refining, wherein the reaction temperature is 170 ℃, the pressure is 60MPa, and the reaction lasts for 3 hours;
a6 calendering to form a film
Calendering and molding the slurry obtained in A5 by a calender to prepare a semi-finished adhesive film with the thickness of 7mm, wherein the screw temperature is 230 ℃, the conveying section temperature is 240 ℃, the extrusion pressure is 55MPa, the drying temperature is 90 ℃, the drying time is 5h, and the production speed is 20 m/min;
a7, embossing
Carrying out embossing treatment on the upper surface and the lower surface of the semi-finished product adhesive film obtained in A6 by using an embossing roller of an embossing machine to obtain a printed semi-finished product PVC adhesive film;
a8, cooling and shaping
Fully cooling and shaping the semi-finished PVC adhesive film obtained in A7 through a cooling roller to form a PVC adhesive film, and pushing an embossing roller by adopting oil pressure, wherein the oil pressure is adjusted to be 3-5 Mpa;
further, the preparation method of the sandwich mesh cloth comprises the following steps:
b1, finishing the mesh fabric
Placing the polyester fiber mesh cloth in a cleaning machine for surface cleaning and carrying out electrostatic dust removal treatment;
b2 padding
And (3) placing the polyester fiber mesh cloth obtained in the step B1 into a padding machine, wherein the padding machine comprises the following raw materials in parts by weight: emulsion method-51 parts of polyvinyl chloride resin powder suspension, 20.5 parts of diisononyl phthalate DINP, 21.5 parts of trioctyl trimellitate TOTM, 1.55 parts of antimony trioxide, 5.3 parts of magnesium hydroxide, 1.05 parts of barium-zinc liquid stabilizer BZ and 1.6 parts of MDX adhesive (isocyanate), the raw materials are put into a high-speed blender, stirred for 12 minutes at the temperature of 120 ℃ to form PVC paste, the PVC paste is put into a padding machine, and the PVC paste is attached to the surface of polyester fiber mesh cloth to obtain the padded polyester fiber mesh cloth;
b3, heating and plasticizing
Heating and plasticizing the padded polyester fiber mesh cloth obtained from B2 to form a heated and plasticized mesh fabric;
b4, coating
Coating PVC paste on the surface of the heated and plasticized sandwich mesh cloth obtained in B3 to form the sandwich mesh cloth coated with the PVC paste, wherein the PVC paste comprises the following raw materials in percentage by mass: 51 parts of emulsion-polyvinyl chloride resin powder suspension, 20.5 parts of diisononyl phthalate DINP, 21.5 parts of trioctyl trimellitate TOTM, 1.55 parts of antimony trioxide, 5.3 parts of magnesium hydroxide, 1.05 parts of barium-zinc liquid stabilizer BZ and 1.6 parts of MDX adhesive (isocyanate), and the raw materials are put into a high-speed blender and stirred for 12 minutes at the temperature of 120 ℃ to form the PVC paste.
B5, secondary heating and plasticizing
Carrying out secondary heating and plasticizing on the mesh fabric coated with the PVC paste on the surface obtained from B4 to form a secondarily heated and plasticized mesh fabric;
b6 bottom layer Heat application
Attaching a PVC film to the bottom surface of the sandwich mesh cloth subjected to secondary heating plasticization at high temperature to form the sandwich mesh cloth attached with a single-layer PVC film;
b7, surface layer thermal bonding
Laminating a PVC adhesive film on the top surface of the laminated mesh fabric laminated with the single-layer PVC adhesive film at a high temperature to form the laminated mesh fabric laminated with the double-layer PVC adhesive film;
b8, embossing
Carrying out upper and lower surface embossing treatment on the screen cloth laminated with the double-layer PVC adhesive film obtained from B7 by using an embossing roller of an embossing machine to obtain printed semi-finished screen cloth;
b9 surface treatment of bottom layer
Coating the PVDC emulsion on the bottom layer of the semi-finished sandwich mesh cloth obtained in the step B7, and then carrying out drying treatment to form a single-layer coated sandwich mesh cloth;
b10 surface treatment of surface layer
Coating the surface of the single-layer coated sandwich mesh cloth obtained in the step B9 with PVDC emulsion, and then carrying out drying treatment to form a double-layer coated sandwich mesh cloth;
b11, cooling and shaping
Fully cooling and shaping the semi-finished product mesh fabric obtained from B10 through a cooling roller, and pushing an embossing roller by adopting oil pressure, wherein the oil pressure is adjusted to be 3-5 Mpa;
b12, product
And (4) inspecting the finished sandwich mesh cloth obtained in the step B11, and rolling into a finished product.
Example 3
PVDC presss from both sides screen cloth with high resistant of PVC coating type, and it includes: the PVC fabric comprises a polyester fiber mesh cloth and a PVC adhesive film, wherein the PVC adhesive film is uniformly adhered to the bottom layer and the surface layer of the polyester fiber mesh cloth, and the surface of the PVC adhesive film is coated with PVDC emulsion; the PVC adhesive film specifically comprises the following raw materials in percentage by mass: suspension method-polyvinyl chloride resin powder PVC78 parts, diisononyl phthalate DINP36 parts, trioctyl trimellitate TOTM16.3 parts, epoxidized soybean oil EPO1.6 parts, ultraviolet absorbent UV-P0.25 parts, antioxidant 10760.13 parts, barium-zinc liquid stabilizer BZ1.6 parts, antimony trioxide 4 parts, magnesium hydroxide 9.84 parts, organic pigment 9.53 parts, and PVDC emulsion 3.8 parts.
Further, the preparation of the PVC adhesive film comprises the following steps:
a1, preparing materials
Blending materials of a suspension method, namely polyvinyl chloride resin powder PVC78 parts, diisononyl phthalate DINP36 parts, trioctyl trimellitate TOTM16.3 parts, epoxidized soybean oil EPO1.6 parts, ultraviolet absorbent UV-P0.25 parts, antioxidant 10760.13 parts, barium-zinc liquid stabilizer BZ1.6 parts, antimonous oxide 4 parts, magnesium hydroxide 9.84 parts, organic pigment 9.53 parts and PVDC emulsion 3.8 parts to form a mixed material;
a2, high speed mixing
Putting the mixed materials into a high-speed blender, and stirring for 15 minutes at the temperature of 140 ℃ to form mixed jelly;
a3, screw extrusion
Putting the mixed jelly into an extruder, and extruding by a screw to obtain slurry, wherein the extrusion temperature is 160 ℃;
a4, filtration
Filtering the extruded slurry on a filter screen to obtain pasty coating slurry;
a5 rubber refining
Injecting the pasty coating slurry into a high-temperature roll refining furnace for pressure refining, wherein the reaction temperature is 180 ℃, the pressure is 60MPa, and the reaction lasts for 3 hours;
a6 calendering to form a film
Calendering and molding the slurry obtained in A5 by a calender to prepare a semi-finished adhesive film with the thickness of 10mm, wherein the screw temperature is 240 ℃, the conveying section temperature is 250 ℃, the extrusion pressure is 60MPa, the drying temperature is 100 ℃, the drying time is 6h, and the production speed is 30 m/min;
a7, embossing
Carrying out embossing treatment on the upper surface and the lower surface of the semi-finished product adhesive film obtained in A6 by using an embossing roller of an embossing machine to obtain a printed semi-finished product PVC adhesive film;
a8, cooling and shaping
Fully cooling and shaping the semi-finished PVC adhesive film obtained in A7 through a cooling roller to form a PVC adhesive film, and pushing an embossing roller by adopting oil pressure, wherein the oil pressure is adjusted to be 5 Mpa;
further, the preparation method of the sandwich mesh cloth comprises the following steps:
b1, finishing the mesh fabric
Placing the polyester fiber mesh cloth in a cleaning machine for surface cleaning and carrying out electrostatic dust removal treatment;
b2 padding
Placing the polyester fiber mesh cloth obtained in the step B1 in a padding machine, wherein the padding machine comprises the following raw materials in parts by weight: emulsion method-polyvinyl chloride resin powder 52.5 parts, diisononyl phthalate DINP 21 parts, trioctyl trimellitate TOTM22 parts, antimony trioxide 1.6 parts, magnesium hydroxide 5.5 parts, barium-zinc liquid stabilizer BZ1.1 parts, MDX adhesive (isocyanate) 1.8 parts, putting the raw materials into a high-speed blender, stirring at 140 ℃ for 15 minutes to form PVC paste, putting the PVC paste into a padding machine, attaching the PVC paste on the surface of polyester fiber to obtain the padded mesh fabric;
b3, heating and plasticizing
Heating and plasticizing the padded polyester fiber mesh cloth obtained from B2 to form a heated and plasticized mesh fabric;
b4, coating
Coating PVC paste on the surface of the heated and plasticized sandwich mesh cloth obtained in B3 to form the sandwich mesh cloth coated with the PVC paste, wherein the PVC paste comprises the following raw materials in percentage by mass: 52.5 parts of emulsion-polyvinyl chloride resin powder suspension, 21 parts of diisononyl phthalate DINP, 22 parts of trioctyl trimellitate TOTM, 1.6 parts of antimony trioxide, 5.5 parts of magnesium hydroxide, 1.1 parts of barium-zinc liquid stabilizer BZ and 1.8 parts of MDX adhesive (isocyanate), and the raw materials are put into a high-speed blender and stirred for 15 minutes at the temperature of 140 ℃ to form the PVC paste.
B5, secondary heating and plasticizing
Carrying out secondary heating and plasticizing on the mesh fabric coated with the PVC paste on the surface obtained from B4 to form a secondarily heated and plasticized mesh fabric;
b6 bottom layer Heat application
Attaching a PVC film to the bottom surface of the sandwich mesh cloth subjected to secondary heating plasticization at high temperature to form the sandwich mesh cloth attached with a single-layer PVC film;
b7, surface layer thermal bonding
Laminating a PVC adhesive film on the top surface of the laminated mesh fabric laminated with the single-layer PVC adhesive film at a high temperature to form the laminated mesh fabric laminated with the double-layer PVC adhesive film;
b8, embossing
Carrying out upper and lower surface embossing treatment on the screen cloth laminated with the double-layer PVC adhesive film obtained from B7 by using an embossing roller of an embossing machine to obtain printed semi-finished screen cloth;
b9 surface treatment of bottom layer
Coating the PVDC emulsion on the bottom layer of the semi-finished sandwich mesh cloth obtained in the step B7, and then carrying out drying treatment to form a single-layer coated sandwich mesh cloth;
b10 surface treatment of surface layer
Coating the surface of the single-layer coated sandwich mesh cloth obtained in the step B9 with PVDC emulsion, and then carrying out drying treatment to form a double-layer coated sandwich mesh cloth;
b11, cooling and shaping
Fully cooling and shaping the semi-finished product mesh fabric obtained from B10 through a cooling roller, and pushing an embossing roller by adopting oil pressure, wherein the oil pressure is adjusted to be 3-5 Mpa;
b12, product
And (4) inspecting the finished sandwich mesh cloth obtained in the step B11, and rolling into a finished product.
Example 4
Performance index of the invention
1. Tensile load: longitudinal is more than or equal to 1800N/5cm, and transverse is more than or equal to 1300N/5cm
2. Peel strength: 83.3N/5cm
3. Temperature: minus 20 ℃ to plus or minus 65 DEG C
4. Wind resistance of the frame: 6-8 grades
5. Heat treatment dimensional change rate: less than or equal to 0.5 percent
6. Low-temperature bendability: no crack at-20 DEG C
7. And (3) permeability resistance: 0.2M Pa, 24 h water-proof
8. Puncture resistance: is impermeable
Performance index of the invention
Figure BDA0003594645020000111
According to the technical indexes and performance indexes, the net clamping cloth has the advantages of good permeability resistance and perforation resistance and high barrier property.
Example 5: damp-heat test
The PVDC and PVC coated high barrier sandwich fabrics prepared in examples 1-3 were subjected to a damp heat test using the test method of GJB150.9A-2009, and the results are shown in table 1.
Table 1 shows the experimental results of metallized PET and PVC composite high-barrier sandwich mesh cloth
Product(s) Results Test items Reference standard
Example 1 The surface is smooth and no bubbles are generated Damp-heat test GJB 150.9A-2009
Example 2 The surface is smooth and no bubbles are generated Damp Heat test GJB 150.9A-2009
Example 3 The surface is smooth and no bubbles are generated Damp-heat test GJB 150.9A-2009
As can be seen from the above table, the PVDC and PVC coated high-barrier sandwich mesh cloth has good moisture resistance.
The foregoing embodiments and description have been presented only to illustrate the principles and preferred embodiments of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as hereinafter claimed.

Claims (3)

  1. PVDC and PVC coating type high-barrier clamp mesh cloth, which comprises: the PVC fabric comprises a polyester fiber mesh cloth and a PVC adhesive film, wherein the PVC adhesive film is uniformly adhered to the bottom layer and the surface layer of the polyester fiber mesh cloth, and the surface of the PVC adhesive film is coated with PVDC emulsion; the PVC adhesive film specifically comprises the following raw materials in percentage by mass: suspension method-polyvinyl chloride resin powder PVC75-78 parts, diisononyl phthalate DINP34-36 parts, trioctyl trimellitate TOTM15.5-16.3 parts, epoxidized soybean oil EPO1.5-1.6 parts, ultraviolet absorbent UV-P0.22-0.25 part, antioxidant 10760.11-0.13 part, barium-zinc liquid stabilizer BZ1.5-1.6 parts, antimonous oxide 3.75-4 parts, magnesium hydroxide 9.37-9.84 parts, organic pigment 9-9.53 parts, PVDC emulsion 3.5-3.8 parts.
  2. 2. The PVDC and PVC coated high barrier nip scrim cloth of claim 1, wherein: the preparation of the PVC adhesive film comprises the following steps:
    a1, preparing materials
    Blending 75-78 parts of suspension-polyvinyl chloride resin powder PVC, 34-36 parts of diisononyl phthalate DINP, 15.5-16.3 parts of trioctyl trimellitate TOTM, 1.5-1.6 parts of epoxidized soybean oil EPO, 0.22-0.25 part of ultraviolet absorbent UV-P, 10760.11-0.13 part of antioxidant, 1.5-1.6 parts of barium-zinc liquid stabilizer BZ, 3.75-4 parts of antimony trioxide, 9.37-9.84 parts of magnesium hydroxide, 9-9.53 parts of organic pigment and 3.5-3.8 parts of PVDC emulsion to form a mixed material;
    a2, high speed mixing
    Putting the mixed materials into a high-speed blending machine, and stirring for 10-15 minutes at the temperature of 100-140 ℃ to form mixed jelly;
    a3, screw extrusion
    Putting the mixed jelly into an extruder, and extruding by a screw to obtain slurry, wherein the extrusion temperature is 120-160 ℃;
    a4, filtration
    Filtering the extruded slurry on a filter screen to obtain pasty coating slurry;
    a5 rubber refining
    Injecting the pasty coating slurry into a high-temperature roll refining furnace for pressure refining, wherein the reaction temperature is 160-180 ℃, the pressure is 60MPa, and the reaction lasts for 3 hours;
    a6 calendering to form a film
    Calendering and molding the slurry obtained in A5 by a calender to prepare a semi-finished adhesive film with the thickness of 5mm-10mm, wherein the screw temperature is 220-240 ℃, the conveying section temperature is 230-250 ℃, the extrusion pressure is 50-60 MPa, the drying temperature is 80-100 ℃, the drying time is 4-6 h, and the production speed is 5-30 m/min;
    a7, embossing
    Carrying out embossing treatment on the upper surface and the lower surface of the semi-finished product adhesive film obtained in A6 by using an embossing roller of an embossing machine to obtain a printed semi-finished product PVC adhesive film;
    a8, cooling and shaping
    And (3) fully cooling and shaping the semi-finished PVC adhesive film obtained in A7 by a cooling roller to form a PVC adhesive film, wherein the embossing roller is pushed by oil pressure, and the oil pressure is adjusted to be 3-5 Mpa.
  3. 3. The PVDC and PVC coated high barrier sandwich mesh cloth according to claim 2, characterized in that: the preparation method of the sandwich mesh cloth comprises the following steps:
    b1, finishing the mesh fabric
    Placing the polyester fiber mesh in a cleaning machine for surface cleaning and performing electrostatic dust removal treatment;
    b2 padding
    Placing the polyester fiber mesh cloth obtained in the step B1 in a padding machine, wherein the padding machine comprises the following raw materials in parts by weight: 50-52.5 parts of emulsion-polyvinyl chloride resin powder suspension, 20-21 parts of diisononyl phthalate DINP, 78-22 parts of trioctyl trimellitate TOTM21-22 parts, 1.5-1.6 parts of antimony trioxide, 5-5.5 parts of magnesium hydroxide, 1.5-1.1 parts of barium-zinc liquid stabilizer BZ1-1.1 parts of MDX adhesive (isocyanate) and 1.5-1.8 parts of MDX adhesive (isocyanate) are put into a high-speed blender and stirred at the temperature of 100-;
    b3, heating and plasticizing
    Heating and plasticizing the padded polyester fiber mesh cloth obtained from B2 to form a heated and plasticized mesh fabric;
    b4, coating
    Coating PVC paste on the surface of the heated and plasticized sandwich mesh cloth obtained in B3 to form the sandwich mesh cloth coated with the PVC paste, wherein the PVC paste comprises the following raw materials in percentage by mass: 50-52.5 parts of emulsion-polyvinyl chloride resin powder suspension, 20-21 parts of diisononyl phthalate DINP, 21-22 parts of trioctyl trimellitate TOTM, 1.5-1.6 parts of antimony trioxide, 5-5.5 parts of magnesium hydroxide, 1-1.1 parts of barium-zinc liquid stabilizer BZ and 1.5-1.8 parts of MDX adhesive (isocyanate), and the raw materials are put into a high-speed blender and stirred for 10-15 minutes at the temperature of 140 ℃ of 100-.
    B5, secondary heating and plasticizing
    Carrying out secondary heating and plasticizing on the mesh fabric coated with the PVC paste on the surface obtained from B4 to form a secondarily heated and plasticized mesh fabric;
    b6 bottom layer Heat application
    Attaching a PVC film to the bottom surface of the sandwich mesh cloth subjected to secondary heating plasticization at high temperature to form the sandwich mesh cloth attached with a single-layer PVC film;
    b7, surface layer thermal bonding
    Laminating a PVC adhesive film on the top surface of the laminated mesh fabric laminated with the single-layer PVC adhesive film at a high temperature to form the laminated mesh fabric laminated with the double-layer PVC adhesive film;
    b8, embossing
    Carrying out upper and lower surface embossing treatment on the screen cloth laminated with the double-layer PVC adhesive film obtained from B7 by using an embossing roller of an embossing machine to obtain printed semi-finished screen cloth;
    b9 surface treatment of bottom layer
    Coating the PVDC emulsion on the bottom layer of the semi-finished sandwich mesh cloth obtained in the step B7, and then carrying out drying treatment to form a single-layer coated sandwich mesh cloth;
    b10 surface treatment of surface layer
    Coating the surface of the single-layer coated sandwich mesh cloth obtained in the step B9 with PVDC emulsion, and then carrying out drying treatment to form a double-layer coated sandwich mesh cloth;
    b11, cooling and shaping
    Fully cooling and shaping the semi-finished product screen cloth obtained from B10 through a cooling roller, and pushing an embossing roller by adopting oil pressure, wherein the oil pressure is adjusted to be 3-5 Mpa;
    b12, product
    And (4) inspecting the finished sandwich mesh cloth obtained in the step B11, and rolling into a finished product.
CN202210385091.XA 2022-04-13 2022-04-13 PVDC (polyvinyl dichloride) and PVC (polyvinyl chloride) coated high-barrier sandwich mesh cloth and preparation method thereof Pending CN114872411A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103481626A (en) * 2013-08-16 2014-01-01 杭州塑料工业有限公司 Production technology of polyvinyl chloride (PVC)/polyethylene (PE)/polyvinyl dichloride (PVDC) composite piece
CN113022052A (en) * 2020-01-09 2021-06-25 广州市柏拉图塑胶有限公司 Anti-fouling self-cleaning PVC net-sandwiched cloth

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103481626A (en) * 2013-08-16 2014-01-01 杭州塑料工业有限公司 Production technology of polyvinyl chloride (PVC)/polyethylene (PE)/polyvinyl dichloride (PVDC) composite piece
CN113022052A (en) * 2020-01-09 2021-06-25 广州市柏拉图塑胶有限公司 Anti-fouling self-cleaning PVC net-sandwiched cloth

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