CN112339380A - Medical double-layer sandwich mesh cloth and preparation method thereof - Google Patents

Medical double-layer sandwich mesh cloth and preparation method thereof Download PDF

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Publication number
CN112339380A
CN112339380A CN202011191515.6A CN202011191515A CN112339380A CN 112339380 A CN112339380 A CN 112339380A CN 202011191515 A CN202011191515 A CN 202011191515A CN 112339380 A CN112339380 A CN 112339380A
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parts
layer
flame retardant
mesh cloth
medical double
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李宏杰
张能海
李仁全
张婷
陈磊
王超
虞宏良
潘莉赛
梅海华
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Zhejiang Mingshida Co Ltd
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Zhejiang Mingshida 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
    • B32B27/30—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
    • B32B27/12—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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of 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
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of 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; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of 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; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use of 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; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
    • 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
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02—Organic and inorganic ingredients
    • 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
    • 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
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/521—Esters of phosphoric acids, e.g. of H3PO4

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  • Chemical Kinetics & Catalysis (AREA)
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Abstract

The invention belongs to the technical field of medical supplies, and particularly relates to a medical double-layer sandwich mesh cloth and a preparation method thereof. Compared with the medical cloth prepared by the traditional sizing process, the medical double-layer sandwich mesh cloth prepared by the coating process has the advantages that the tensile strength, the tearing strength and the peeling strength of the product are remarkably improved, the flame retardant property of the medical double-layer sandwich mesh cloth can be effectively improved through the special composition of the formulas of the surface layer and the bottom layer, so that the flame retardant effect of the medical double-layer sandwich mesh cloth can reach the B1 standard, and the surface layer, the middle layer and the bottom layer are simultaneously compounded through the coating process, so that on one hand, the medical double-layer sandwich mesh cloth can be more simplified in the preparation process, the flow is shorter, the loss is lower, a large amount of manpower and material resources can be saved, and on the other hand, the product can be fixed more conveniently and mounted more quickly when.

Description

Medical double-layer sandwich mesh cloth and preparation method thereof
Technical Field
The invention relates to the technical field of medical supplies, in particular to a medical double-layer sandwich mesh cloth and a preparation method thereof.
Background
Medical cloth usually needs to be covered by cloth sheets laid around wounds during surgery, and the cloth sheets must be fixed before the surgery, and at present, there are two ways for fixing the cloth sheets: one is to use the glue film to bond and fix the cloth sheet, and the glue film is a consumable product, so the fixing mode cannot be used repeatedly, has higher use cost, and is easy to have the phenomena of falling off of the glue film and infirm fixing. The other type is fixed by special tissue forceps, the ends of the special tissue forceps are sharp and easy to clamp a cloth sheet to cause wound pollution and cloth sheet loss, the special tissue forceps are made of metal materials, the X-ray perspective effect is influenced by the special tissue forceps, and operation is inconvenient, if the application number is CN201811057653.8, the medical cloth and the preparation method and application thereof are provided, and the medical cloth comprises the following raw materials in percentage by mass: 30-35% of fiber formed by spinning polymer resin, 20-25% of nano fiber with antibacterial effect, 5-10% of polypropylene fiber/polyester fiber, 5-10% of metal fiber and 15-20% of sisal fiber. The medical cloth not only has better moisture absorption and air permeability, but also has the effects of stopping bleeding and inhibiting bacteria.
Traditional medical cloth flame retardant effect is not good, can not reach standard requirement, and unstable when fixing the sheet, the loss is too big, and the installation is too loaded down with trivial details, causes manpower and materials to be overdrawn, and this type of product is comparatively complicated in the technology manufacturing process moreover, and the flow overlength to tear the tensile strength effect not very ideal.
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a medical double-layer sandwich mesh cloth and a preparation method thereof, and solves the problems of poor flame retardant effect, unstable fixation, complex process and overlong flow of the traditional medical cloth.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a medical double-layer sandwich mesh cloth comprises a surface layer, a middle layer and a bottom layer, wherein the surface layer and the bottom layer are respectively coated and compounded on the upper surface and the lower surface of the middle layer.
As a preferred technical scheme of the invention, the surface layer comprises the following components in parts by weight: 80-100 parts of PVC, 45-50 parts of environment-friendly plasticizer, 1-2 parts of epoxidized soybean oil, 2-2.5 parts of barium zinc, 40-50 parts of calcium carbonate, 7-8 parts of flame retardant, 6-8 parts of magnesium hydroxide, 10-12 parts of liquid flame retardant and 2-3 parts of pigment.
As a preferred technical scheme of the invention, the bottom layer is composed of the following components in parts by weight: PVC80-100 parts, environment-friendly plasticizer 45-50 parts, epoxidized soybean oil 1-2 parts, barium zinc 2-2.5 parts, calcium carbonate 50-60 parts, flame retardant 7-8 parts, magnesium hydroxide 6-8 parts, liquid flame retardant 10-12 parts and pigment 1-2 parts.
As a preferable technical scheme of the invention, the thicknesses of the surface layer and the bottom layer are both 0.12-0.15 MM.
In a preferred embodiment of the present invention, the middle layer is formed by coating and combining the bottom layer with the coating layer with the specification of 500D (9 × 9).
As a preferable technical scheme of the invention, the environment-friendly plasticizer is tributyl phosphate.
The invention also provides a preparation method of the medical double-layer sandwich mesh cloth, which comprises the following steps:
s1, weighing the raw materials of each component according to the formula proportion of the surface layer and the bottom layer;
step S2, preparing a surface layer: weighing PVC, an environment-friendly plasticizer, epoxidized soybean oil, barium zinc, calcium carbonate, a flame retardant, magnesium hydroxide, a liquid flame retardant and a pigment in corresponding parts by weight in the step S1, feeding the materials into a high-speed mixer for mixing to obtain a mixture, feeding the mixture into an internal mixer for stirring and plasticizing at the temperature of 130-140 ℃ for 5-8 minutes to obtain an internal mixture, feeding the internal mixture into a milling machine for plasticizing at the temperature of 175-190 ℃ for 10-15 minutes to obtain a milled material, and finally sequentially carrying out calendaring, cooling and shearing on the milled material to obtain a surface layer;
step S3, preparing a bottom layer, namely feeding PVC, an environment-friendly plasticizer, epoxidized soybean oil, barium zinc, calcium carbonate, a flame retardant, magnesium hydroxide, a liquid flame retardant and a pigment in corresponding weight parts which are weighed in the step S1 into a high-speed mixer for mixing to obtain a mixture, feeding the mixture into an internal mixer for stirring and plasticizing at the temperature of 130-140 ℃ for 5-8 minutes to obtain an internal mixture, feeding the internal mixture into a milling machine for plasticizing at the temperature of 175-190 ℃ for 10-15 minutes to obtain a milled material, and finally sequentially carrying out calendaring, cooling and shearing on the milled material to obtain the bottom layer;
step S4, pasting and composite forming: and respectively attaching the surface layer and the bottom layer obtained in the step S2 and the step S3 to the upper surface and the lower surface of the middle layer in a coating and compounding manner.
As a preferred embodiment of the present invention, the mixing conditions of the high-speed mixer in step S2 and step S3 are: mixing for 15-20 minutes at 2000-2500 r/min.
(III) advantageous effects
Compared with the prior art, the invention provides medical double-layer sandwich mesh cloth and a preparation method thereof, and the medical double-layer sandwich mesh cloth has the following beneficial effects:
compared with the medical cloth prepared by the traditional sizing process, the medical double-layer mesh fabric prepared by compounding through the coating process remarkably improves the tensile strength, the tearing strength and the peeling strength of a product, and can effectively improve the flame retardant property of the medical double-layer mesh fabric through the special composition of the formula above the surface layer and the bottom layer, so that the flame retardant effect of the medical double-layer mesh fabric can reach the B1 standard.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a table diagram showing the comparison of the effect of the medical double-layer sandwich mesh cloth prepared by the present invention and the medical cloth prepared by the traditional sizing process.
In the figure: 1. a surface layer; 2. a middle layer; 3. a bottom layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, the present invention provides the following technical solutions: a medical double-layer sandwich mesh cloth comprises a surface layer 1, a middle layer 2 and a bottom layer 3, wherein the surface layer 1 and the bottom layer 3 are respectively coated and compounded on the upper surface and the lower surface of the middle layer 2.
Specifically, the surface layer 1 comprises the following components in parts by weight: 80 parts of PVC, 45 parts of an environment-friendly plasticizer, 1 part of epoxidized soybean oil, 2 parts of barium and zinc, 40 parts of calcium carbonate, 7 parts of a flame retardant, 6 parts of magnesium hydroxide, 10 parts of a liquid flame retardant and 2 parts of a pigment.
Specifically, the bottom layer 3 is composed of the following components in parts by weight: 80 parts of PVC, 45 parts of environment-friendly plasticizer, 1 part of epoxidized soybean oil, 2 parts of barium and zinc, 50 parts of calcium carbonate, 7 parts of flame retardant, 6 parts of magnesium hydroxide, 10 parts of liquid flame retardant and 1 part of pigment.
Specifically, the thickness of the face layer 1 and the bottom layer 3 is 0.12 MM.
Specifically, the middle layer 2 is formed by coating and compounding the bottom layer 3 with the standard 500D (9 × 9).
Specifically, the environment-friendly plasticizer is tributyl phosphate.
The invention also provides a preparation method of the medical double-layer sandwich mesh cloth, which comprises the following steps:
s1, weighing the raw materials of the components according to the formula proportion of the surface layer 1 and the bottom layer 3;
step S2, preparing a face layer 1: weighing PVC, an environment-friendly plasticizer, epoxidized soybean oil, barium zinc, calcium carbonate, a flame retardant, magnesium hydroxide, a liquid flame retardant and a pigment in corresponding parts by weight in the step S1, feeding the materials into a high-speed mixer for mixing to obtain a mixture, feeding the mixture into an internal mixer for stirring and plasticizing at the temperature of 130 ℃ for 5 minutes to obtain an internal mixture, feeding the internal mixture into a scouring machine for plasticizing and molding at the temperature of 175 ℃ for 10 minutes to obtain a scouring material, and finally sequentially carrying out calendaring, cooling and shearing on the scouring material to obtain a surface layer 1;
step S3, preparing a bottom layer 3, namely feeding PVC, an environment-friendly plasticizer, epoxidized soybean oil, barium zinc, calcium carbonate, a flame retardant, magnesium hydroxide, a liquid flame retardant and a pigment in corresponding weight parts which are weighed in the step S1 into a high-speed mixer for mixing to obtain a mixture, feeding the mixture into an internal mixer for stirring and plasticizing at the stirring and plasticizing temperature of 130 ℃ for 5 minutes to obtain an internal mixture, feeding the internal mixture into a milling machine for plasticizing at the milling and plasticizing temperature of 175 ℃ for 10 minutes to obtain a milled material, and finally sequentially carrying out calendaring, cooling and shearing on the milled material to obtain the bottom layer 3;
step S4, pasting and composite forming: the top layer 1 and the bottom layer 3 obtained in the steps S2 and S3 are respectively attached to the upper surface and the lower surface of the middle layer 2 by means of coating and compounding.
Specifically, the mixing conditions of the high-speed mixer in step S2 and step S3 are as follows: mix at 2000r/min for 15 minutes.
Example 2
Referring to fig. 1-2, the present invention provides the following technical solutions: a medical double-layer sandwich mesh cloth comprises a surface layer 1, a middle layer 2 and a bottom layer 3, wherein the surface layer 1 and the bottom layer 3 are respectively coated and compounded on the upper surface and the lower surface of the middle layer 2.
Specifically, the surface layer 1 comprises the following components in parts by weight: 80-100 parts of PVC, 46 parts of environment-friendly plasticizer, 1.4 parts of epoxidized soybean oil, 2.2 parts of barium zinc, 44 parts of calcium carbonate, 7.4 parts of flame retardant, 7 parts of magnesium hydroxide, 11 parts of liquid flame retardant and 2.4 parts of pigment.
Specifically, the bottom layer 3 is composed of the following components in parts by weight: 90 parts of PVC, 46 parts of environment-friendly plasticizer, 1.4 parts of epoxidized soybean oil, 2.2 parts of barium zinc, 54 parts of calcium carbonate, 7.4 parts of flame retardant, 7 parts of magnesium hydroxide, 11 parts of liquid flame retardant and 2.4 parts of pigment.
Specifically, the thickness of the top layer 1 and the bottom layer 3 is 0.13 MM.
Specifically, the middle layer 2 is formed by coating and compounding the bottom layer 3 with the standard 500D (9 × 9).
Specifically, the environment-friendly plasticizer is tributyl phosphate.
The invention also provides a preparation method of the medical double-layer sandwich mesh cloth, which comprises the following steps:
s1, weighing the raw materials of the components according to the formula proportion of the surface layer 1 and the bottom layer 3;
step S2, preparing a face layer 1: weighing PVC, an environment-friendly plasticizer, epoxidized soybean oil, barium zinc, calcium carbonate, a flame retardant, magnesium hydroxide, a liquid flame retardant and a pigment in corresponding parts by weight in the step S1, feeding the materials into a high-speed mixer for mixing to obtain a mixture, feeding the mixture into an internal mixer for stirring and plasticizing at a temperature of 134 ℃ for 6 minutes to obtain an internal mixture, feeding the internal mixture into a scouring machine for plasticizing and molding at a temperature of 180 ℃ for 12 minutes to obtain a scouring material, and finally sequentially carrying out calendaring, cooling and shearing on the scouring material to obtain a surface layer 1;
step S3, preparing a bottom layer 3, namely feeding PVC, an environment-friendly plasticizer, epoxidized soybean oil, barium zinc, calcium carbonate, a flame retardant, magnesium hydroxide, a liquid flame retardant and a pigment in corresponding weight parts which are weighed in the step S1 into a high-speed mixer for mixing to obtain a mixture, feeding the mixture into an internal mixer for stirring and plasticizing at a stirring and plasticizing temperature of 134 ℃ for 6 minutes to obtain an internal mixture, feeding the internal mixture into a milling machine for plasticizing at a milling and plasticizing temperature of 180 ℃ for 12 minutes to obtain a milled material, and finally sequentially carrying out calendaring, cooling and shearing on the milled material to obtain the bottom layer 3;
step S4, pasting and composite forming: the top layer 1 and the bottom layer 3 obtained in the steps S2 and S3 are respectively attached to the upper surface and the lower surface of the middle layer 2 by means of coating and compounding.
Specifically, the mixing conditions of the high-speed mixer in step S2 and step S3 are as follows: mix for 16 minutes at 2200 r/min.
Example 3
Referring to fig. 1-2, the present invention provides the following technical solutions: a medical double-layer sandwich mesh cloth comprises a surface layer 1, a middle layer 2 and a bottom layer 3, wherein the surface layer 1 and the bottom layer 3 are respectively coated and compounded on the upper surface and the lower surface of the middle layer 2.
Specifically, the surface layer 1 comprises the following components in parts by weight: 80-100 parts of PVC, 48 parts of environment-friendly plasticizer, 1.8 parts of epoxidized soybean oil, 2.4 parts of barium zinc, 48 parts of calcium carbonate, 7.8 parts of flame retardant, 7.5 parts of magnesium hydroxide, 11.5 parts of liquid flame retardant and 2.8 parts of pigment.
Specifically, the bottom layer 3 is composed of the following components in parts by weight: 80-100 parts of PVC, 48 parts of environment-friendly plasticizer, 1.8 parts of epoxidized soybean oil, 2.4 parts of barium zinc, 58 parts of calcium carbonate, 7.8 parts of flame retardant, 7.5 parts of magnesium hydroxide, 11.5 parts of liquid flame retardant and 1.8 parts of pigment.
Specifically, the thicknesses of the surface layer 1 and the bottom layer 3 are both O.14MM.
Specifically, the middle layer 2 is formed by coating and compounding the bottom layer 3 with the standard 500D (9 × 9).
Specifically, the environment-friendly plasticizer is tributyl phosphate.
The invention also provides a preparation method of the medical double-layer sandwich mesh cloth, which comprises the following steps:
s1, weighing the raw materials of the components according to the formula proportion of the surface layer 1 and the bottom layer 3;
step S2, preparing a face layer 1: weighing PVC, an environment-friendly plasticizer, epoxidized soybean oil, barium zinc, calcium carbonate, a flame retardant, magnesium hydroxide, a liquid flame retardant and a pigment in corresponding parts by weight in the step S1, feeding the materials into a high-speed mixer for mixing to obtain a mixture, feeding the mixture into an internal mixer for stirring and plasticizing at 138 ℃ for 7 minutes to obtain an internal mixture, feeding the internal mixture into a scouring machine for plasticizing and molding at 185 ℃ for 14 minutes to obtain a scouring material, and finally sequentially carrying out calendaring, cooling and shearing on the scouring material to obtain a surface layer 1;
step S3, preparing a bottom layer 3, namely feeding PVC, an environment-friendly plasticizer, epoxidized soybean oil, barium zinc, calcium carbonate, a flame retardant, magnesium hydroxide, a liquid flame retardant and a pigment in corresponding weight parts which are weighed in the step S1 into a high-speed mixer for mixing to obtain a mixture, feeding the mixture into an internal mixer for stirring and plasticizing at the stirring and plasticizing temperature of 138 ℃ for 7 minutes to obtain an internal mixture, feeding the internal mixture into a milling machine for plasticizing at the milling and plasticizing temperature of 185 ℃ for 14 minutes to obtain a milled material, and finally sequentially carrying out calendaring, cooling and shearing on the milled material to obtain the bottom layer 3;
step S4, pasting and composite forming: the top layer 1 and the bottom layer 3 obtained in the steps S2 and S3 are respectively attached to the upper surface and the lower surface of the middle layer 2 by means of coating and compounding.
Specifically, the mixing conditions of the high-speed mixer in step S2 and step S3 are as follows: mixing for 15-20 minutes at 2400 r/min.
Example 4
Referring to fig. 1-2, the present invention provides the following technical solutions: a medical double-layer sandwich mesh cloth comprises a surface layer 1, a middle layer 2 and a bottom layer 3, wherein the surface layer 1 and the bottom layer 3 are respectively coated and compounded on the upper surface and the lower surface of the middle layer 2.
Specifically, the surface layer 1 comprises the following components in parts by weight: PVC80-100 parts, environment-friendly plasticizer 50 parts, epoxidized soybean oil 2 parts, barium zinc 2.5 parts, calcium carbonate 50 parts, flame retardant 8 parts, magnesium hydroxide 8 parts, liquid flame retardant 12 parts and pigment 3 parts.
Specifically, the bottom layer 3 is composed of the following components in parts by weight: 100 parts of PVC, 50 parts of environment-friendly plasticizer, 2 parts of epoxidized soybean oil, 2.5 parts of barium zinc, 60 parts of calcium carbonate, 8 parts of flame retardant, 8 parts of magnesium hydroxide, 12 parts of liquid flame retardant and 2 parts of pigment.
Specifically, the thickness of the face layer 1 and the bottom layer 3 is 0.15 MM.
Specifically, the middle layer 2 is formed by coating and compounding the bottom layer 3 with the standard 500D (9 × 9).
Specifically, the environment-friendly plasticizer is tributyl phosphate.
The invention also provides a preparation method of the medical double-layer sandwich mesh cloth, which comprises the following steps:
s1, weighing the raw materials of the components according to the formula proportion of the surface layer 1 and the bottom layer 3;
step S2, preparing a face layer 1: weighing PVC, an environment-friendly plasticizer, epoxidized soybean oil, barium zinc, calcium carbonate, a flame retardant, magnesium hydroxide, a liquid flame retardant and a pigment in corresponding parts by weight in the step S1, feeding the materials into a high-speed mixer for mixing to obtain a mixture, feeding the mixture into an internal mixer for stirring and plasticizing at the temperature of 140 ℃ for 8 minutes to obtain an internal mixture, feeding the internal mixture into a scouring machine for plasticizing and molding at the temperature of 190 ℃ for 15 minutes to obtain a scouring material, and finally sequentially carrying out calendaring, cooling and shearing on the scouring material to obtain a surface layer 1;
step S3, preparing a bottom layer 3, namely feeding PVC, an environment-friendly plasticizer, epoxidized soybean oil, barium zinc, calcium carbonate, a flame retardant, magnesium hydroxide, a liquid flame retardant and a pigment in corresponding weight parts which are weighed in the step S1 into a high-speed mixer for mixing to obtain a mixture, feeding the mixture into an internal mixer for stirring and plasticizing at the stirring and plasticizing temperature of 140 ℃ for 8 minutes to obtain an internal mixture, feeding the internal mixture into a milling machine for plasticizing at the milling and plasticizing temperature of 190 ℃ for 15 minutes to obtain a milled material, and finally sequentially carrying out calendaring, cooling and shearing on the milled material to obtain the bottom layer 3;
step S4, pasting and composite forming: the top layer 1 and the bottom layer 3 obtained in the steps S2 and S3 are respectively attached to the upper surface and the lower surface of the middle layer 2 by means of coating and compounding.
Specifically, the mixing conditions of the high-speed mixer in step S2 and step S3 are as follows: mixing for 15-20 minutes at 2500 r/min.
Based on the tensile test standard GB/T3923.1, the tear test standard GB/T3917.4-2009 and the peel test standard GB/T8808-1988, the test effects of tensile strength, tear strength and peel strength, hardness, installation convenience and flame retardant property of the medical double-layer sandwich mesh cloth prepared in the examples 1-4 are shown in figure 2 compared with the effect of the medical cloth prepared by the traditional sizing process.
Through detection, compared with the medical cloth prepared by the traditional sizing process, the medical double-layer sandwich mesh cloth prepared by the coating process is remarkably improved in tensile strength, tearing strength and peeling strength, the flame retardant property of the medical double-layer sandwich mesh cloth can be effectively improved through the special composition of the formula of the surface layer and the bottom layer, so that the flame retardant effect of the medical double-layer sandwich mesh cloth can reach the B1 standard, and the surface layer, the middle layer and the bottom layer are simultaneously compounded through the coating process, so that the medical double-layer sandwich mesh cloth is simpler in the preparation process, shorter in flow, lower in loss, and capable of saving a large amount of manpower and material resources, and the medical double-layer sandwich mesh cloth is more convenient to fix and quicker to install when the medical double-layer sandwich mesh cloth is used.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (8)

1. The utility model provides a medical double-deck screen cloth that presss from both sides, includes surface course (1), middle level (2) and bottom (3), its characterized in that: the surface layer (1) and the bottom layer (3) are respectively coated and compounded on the upper surface and the lower surface of the middle layer (2).
2. The medical double-layer clip mesh cloth according to claim 1, characterized in that: the surface layer (1) is composed of the following components in parts by weight: 80-100 parts of PVC, 45-50 parts of environment-friendly plasticizer, 1-2 parts of epoxidized soybean oil, 2-2.5 parts of barium zinc, 40-50 parts of calcium carbonate, 7-8 parts of flame retardant, 6-8 parts of magnesium hydroxide, 10-12 parts of liquid flame retardant and 2-3 parts of pigment.
3. The medical double-layer clip mesh cloth according to claim 1, characterized in that: the bottom layer (3) is composed of the following components in parts by weight: 80-100 parts of PVC, 45-50 parts of environment-friendly plasticizer, 1-2 parts of epoxidized soybean oil, 2-2.5 parts of barium zinc, 50-60 parts of calcium carbonate, 7-8 parts of flame retardant, 6-8 parts of magnesium hydroxide, 10-12 parts of liquid flame retardant and 1-2 parts of pigment.
4. The medical double-layer clip mesh cloth according to claim 1, characterized in that: the thickness of the surface layer (1) and the thickness of the bottom layer (3) are both 0.12-0.15 MM.
5. The medical double-layer clip mesh cloth according to claim 1, characterized in that: the middle layer (2) is formed by coating and compounding the bottom layer (3) with the specification of 500D (9 x 9).
6. The medical double-layer clip mesh cloth according to claim 1, characterized in that: the environment-friendly plasticizer is tributyl phosphate.
7. The method for preparing medical double-layer sandwich mesh cloth according to any one of claims 1 to 6, wherein the method comprises the following steps: the preparation method comprises the following steps:
s1, weighing the raw materials of the components according to the formula proportion of the surface layer (1) and the bottom layer (3);
step S2, preparing a face layer (1): weighing PVC, an environment-friendly plasticizer, epoxidized soybean oil, barium zinc, calcium carbonate, a flame retardant, magnesium hydroxide, a liquid flame retardant and a pigment in corresponding parts by weight in the step S1, feeding the materials into a high-speed mixer for mixing to obtain a mixture, feeding the mixture into an internal mixer for stirring and plasticizing at the temperature of 130-140 ℃ for 5-8 minutes to obtain an internal mixer, feeding the internal mixer into a scouring machine for plasticizing and forming at the temperature of 175-190 ℃ for 10-15 minutes to obtain a scouring material, and finally carrying out calendaring, cooling and shearing treatment on the scouring material in sequence to obtain a surface layer (1);
step S3, preparing a bottom layer (3), namely feeding PVC, an environment-friendly plasticizer, epoxidized soybean oil, barium zinc, calcium carbonate, a flame retardant, magnesium hydroxide, a liquid flame retardant and a pigment in corresponding weight parts, which are weighed in the step S1, into a high-speed mixer for mixing to obtain a mixture, feeding the mixture into an internal mixer for stirring and plasticizing at the stirring and plasticizing temperature of 130-140 ℃ for 5-8 minutes to obtain an internal mixture, feeding the internal mixture into a scouring machine for plasticizing and forming at the scouring and plasticizing temperature of 175-190 ℃ for 10-15 minutes to obtain a scouring material, and finally carrying out calendaring, cooling and shearing treatment on the scouring material in sequence to obtain the bottom layer (3);
step S4, pasting and composite forming: and (3) respectively attaching the surface layer (1) and the bottom layer (3) obtained in the steps S2 and S3 to the upper surface and the lower surface of the middle layer (2) in a coating and compounding manner.
8. The method for preparing medical double-layer sandwich mesh cloth according to claim 7, wherein the method comprises the following steps: the mixing conditions of the high-speed mixer in the step S2 and the step S3 are that: mixing for 15-20 minutes at 2000-2500 r/min.
CN202011191515.6A 2020-10-30 2020-10-30 Medical double-layer sandwich mesh cloth and preparation method thereof Pending CN112339380A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107501779A (en) * 2017-07-12 2017-12-22 广东冠盛塑胶有限公司 A kind of flame-proof PVC folder screen cloth film and preparation method thereof
CN108909147A (en) * 2018-07-20 2018-11-30 福建思嘉环保材料科技有限公司 A kind of preparation process of economical abrasive folder screen cloth
CN211683868U (en) * 2019-12-31 2020-10-16 广州市柏拉图塑胶有限公司 Anti-fouling self-cleaning PVC net-sandwiched cloth

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107501779A (en) * 2017-07-12 2017-12-22 广东冠盛塑胶有限公司 A kind of flame-proof PVC folder screen cloth film and preparation method thereof
CN108909147A (en) * 2018-07-20 2018-11-30 福建思嘉环保材料科技有限公司 A kind of preparation process of economical abrasive folder screen cloth
CN211683868U (en) * 2019-12-31 2020-10-16 广州市柏拉图塑胶有限公司 Anti-fouling self-cleaning PVC net-sandwiched cloth

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Application publication date: 20210209