CN114806043A - Indoor and outdoor antibacterial and mildewproof modified engineering plastic film - Google Patents

Indoor and outdoor antibacterial and mildewproof modified engineering plastic film Download PDF

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Publication number
CN114806043A
CN114806043A CN202210412780.5A CN202210412780A CN114806043A CN 114806043 A CN114806043 A CN 114806043A CN 202210412780 A CN202210412780 A CN 202210412780A CN 114806043 A CN114806043 A CN 114806043A
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China
Prior art keywords
screw extruder
type single
antibacterial
engineering plastic
speed
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Inventor
钱雨杰
钱利荣
邱霞
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Shanghai Jiexiurui Technology Co ltd
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Shanghai Jiexiurui Technology Co ltd
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Priority to CN202210412780.5A priority Critical patent/CN114806043A/en
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    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/002—Methods
    • B29B7/005—Methods for mixing in batches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • 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
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • 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
    • C08J2327/12—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 fluorine atoms
    • C08J2327/16—Homopolymers or copolymers of vinylidene fluoride
    • 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
    • C08J2333/00—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2333/04—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
    • C08J2333/06—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C08J2333/10—Homopolymers or copolymers of methacrylic acid esters
    • C08J2333/12—Homopolymers or copolymers of methyl methacrylate
    • 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
    • C08J2427/00—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
    • C08J2427/02—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
    • C08J2427/12—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 fluorine atoms
    • C08J2427/16—Homopolymers or copolymers of vinylidene fluoride
    • 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
    • C08J2433/00—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2433/04—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
    • C08J2433/06—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C08J2433/10—Homopolymers or copolymers of methacrylic acid esters
    • C08J2433/12—Homopolymers or copolymers of methyl methacrylate

Abstract

The invention provides an indoor and outdoor antibacterial and mildewproof modified engineering plastic film, and relates to the fields of engineering plastic technology and film production and processing. The preparation method of the indoor and outdoor antibacterial and mildewproof modified engineering plastic film comprises the following preparation steps: s1, firstly, stirring and mixing the raw materials of polyvinylidene fluoride and polymethyl methacrylate according to the mass percentage. The processed engineering plastic mixture is extruded and cast by processing equipment, so that the obtained engineering plastic is modified by matching with an antibacterial mildew preventive and a coupling agent in a vacuum high-temperature environment, and the processed engineering plastic particles are extruded into a film by the extrusion and casting processing equipment in a double-layer co-extrusion mode with other film materials.

Description

Indoor and outdoor antibacterial and mildewproof modified engineering plastic film
Technical Field
The invention relates to the technical field of engineering plastics, in particular to an indoor and outdoor antibacterial and mildewproof modified engineering plastic film.
Background
Polyvinylidene fluoride, abbreviated as PVDF in English, mainly refers to vinylidene fluoride homopolymer or a copolymer of vinylidene fluoride and other small amount of fluorine-containing vinyl monomers, has the characteristics of fluororesin and general resin, has good chemical corrosion resistance, high temperature resistance, oxidation resistance, weather resistance and ray radiation resistance, and also has special performances such as piezoelectricity, dielectricity, pyroelectricity and the like, is a second-place-ranked large product in yield of fluorine-containing plastics, has the global annual capacity of more than 5.3 ten thousand tons, is combined by a fluorine-carbon bond in a chemical structure, and forms the most stable and firm combination with hydrogen ions by the structure with short bond property.
In the process of remolding the existing polyvinylidene fluoride engineering plastic into a film, the obtained product can realize the antibacterial and mildewproof capability only by adding a corresponding antibacterial and mildewproof layer, so that a large number of working procedures and production cost are increased.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an indoor and outdoor antibacterial and mildewproof modified engineering plastic film, and solves the problem that the existing polyvinylidene fluoride engineering plastic does not have antibacterial and mildewproof capabilities.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: an indoor and outdoor antibacterial and mildewproof modified engineering plastic film comprises the following components in percentage by mass: polyvinylidene fluoride: 2-55% and polymethyl methacrylate: 40-95% of a light stabilizer: 0.01-1%, and a heat stabilizer: 0.01-1%; main ultraviolet absorber: 0.01-2%, auxiliary ultraviolet absorbent: 0.01-2%, antioxidant: 0.01-1%, auxiliary antioxidant: 0.01-1%, coupling agent: 0.01-1% of antibacterial mildew preventive: 0.01-1%, toner: 0.01 to 2 percent.
Preferably, the preparation method of the indoor and outdoor antibacterial and mildewproof modified engineering plastic film is characterized by comprising the following steps: the preparation method comprises the following preparation steps:
s1, firstly, stirring and mixing raw materials of polyvinylidene fluoride and polymethyl methacrylate according to the mass percentage;
s2, placing the mixed powder particles and the liquid coupling agent in a high-speed stirrer, controlling the rotating speed of the high-speed stirrer to be 3000-5000 revolutions per minute, heating the mixed material under the friction action of high-speed stirring, keeping high-speed stirring for 10-15 minutes when the temperature of the high-speed stirrer is stabilized at 90-120 ℃, taking the light stabilizer, the heat stabilizer, the main ultraviolet absorbent, the auxiliary ultraviolet absorbent, the main antioxidant, the auxiliary antioxidant and the antibacterial mildew preventive in corresponding percentage quantities after mixing, placing the mixed material in the high-speed stirrer for high-speed stirring again, and obtaining a mixture A after stirring.
S3, placing the mixture A in a negative pressure vacuum heating bin, controlling the temperature of the bin between 60 and 90 ℃, preheating and dehumidifying the mixed raw material, then respectively injecting the raw material into a 65-type single-screw extruder and another outsourced modified PMMA (organic glass) raw material into a 75-type single-screw extruder, setting the working temperature of the 65-type single-screw extruder at 170-220 ℃, setting the working temperature of the 75-type single-screw extruder at 180-230 ℃, setting the working temperature of the modified antibacterial mildew-proof PVDF layer at 180-230 ℃, and adopting a co-extrusion tape casting process for the 65-type single-screw extruder and the 75-type single-screw extruder, and a co-extrusion film finished product is obtained by adopting a mode of automatically controlling the temperature of a double-layer co-extrusion die and compounding in the die, and after the double-layer co-extrusion composite film is cooled to 20-30 ℃, a winding machine is used for winding and storing at the speed of 20-70 meters per minute.
Preferably, in the step S1, the stirring and mixing step includes the following steps: the raw materials are placed in a crusher and crushed to be mixed powder particles of 30-35 meshes at the rotating speed of 500-550 revolutions per minute.
Preferably, in the step S2, the rotation speed of the high-speed mixer is controlled to be 3000-.
Preferably, in the step S2, after stirring is finished for 20 minutes, the light stabilizer, the heat stabilizer, the main ultraviolet absorber, the auxiliary ultraviolet absorber, the main antioxidant, the auxiliary antioxidant, and the antibacterial and antifungal agent are mixed, and added into the high-speed stirrer in a corresponding percentage by mass, and stirred at a high speed again, so as to obtain the mixture a after stirring.
Preferably, in the step S3, the mixture a is placed in a negative pressure vacuum heating bin, and the mixed raw materials are preheated and dehumidified.
Preferably, the temperature of the negative pressure vacuum heating bin is controlled to be 60-90 ℃, the mixed raw material is preheated and dehumidified, the duration of heating and dehumidification is controlled to be 2-4 hours, and the air supply amount is 1-5 cubic meters per minute.
Preferably, the dried mixture A is respectively injected into a 65-type single-screw extruder and another outsourced modified PMMA (polymethyl methacrylate) raw material to be injected into a 75-type single-screw extruder, the working temperature of the 65-type single-screw extruder is set to 170-220 ℃, the working temperature of the 75-type single-screw extruder is set to 180-230 ℃, the working temperature of the modified antibacterial and mildewproof PVDF layer is 180-230 ℃, the 65-type single-screw extruder and the 75-type single-screw extruder adopt a co-extrusion casting process, a co-extrusion film finished product is obtained by adopting a mode of automatically controlling a double-layer co-extrusion mold and compounding in the mold, and after the double-layer co-extrusion composite film is cooled to 20-30 ℃, the winding machine is used for winding and storing at the speed of 20-70 meters per minute.
Preferably, in the step S3, the width of the obtained co-extruded film finished product is 300-2200 mm, the screw length agent ratio of the 65-type single screw extruder to the 75-type single screw extruder is 32:32, the compression ratio of the two dies is 2.55, the thickness of the film produced by the 75-type single screw extruder is 90-170 micrometers, and the thickness of the film produced by the 65-type single screw extruder is 3-30 micrometers.
(III) advantageous effects
The invention provides an indoor and outdoor antibacterial and mildewproof modified engineering plastic film. The method has the following beneficial effects:
the invention adds the antibacterial mildew preventive and the coupling agent, places the solid-liquid mixture A in a high-speed stirrer, places the toner, the auxiliary ultraviolet absorbent, the auxiliary antioxidant and the liquid coupling agent in the high-speed stirrer together according to the mass percentage, controls the rotating speed of the high-speed stirrer between 3000 plus 5000 revolutions per minute, heats the mixture under the friction action of high-speed stirring, keeps high-speed stirring for 10-15 minutes when the temperature of the high-speed stirrer is stabilized at 90-120 ℃, places the antioxidant, the antibacterial mildew preventive and the main ultraviolet absorbent in the high-speed stirrer according to the mass percentage after mixing, makes the engineering plastic match the antibacterial mildew preventive and the coupling agent for modification under the vacuum high-temperature environment, increases the antibacterial mildew preventive capability on the body, and makes the film manufactured in the later period have the antibacterial mildew preventive capability, the modified plastic particles and other film materials are extruded into a film in a double-layer co-extrusion mode through extrusion tape casting processing equipment, and the innovative product can be widely applied to surface coating of building materials (the building materials comprise metal plates, metal composite plates, plastic extrusion plates and the like, but are not limited to the surface coating of the products).
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.
The first embodiment is as follows:
the embodiment of the invention provides an indoor and outdoor antibacterial and mildewproof modified engineering plastic film which comprises the following components in percentage by mass: polyvinylidene fluoride: 55%, polymethyl methacrylate: 40%, light stabilizer: 1% and a heat stabilizer: 1 percent; main ultraviolet absorber: 2% auxiliary ultraviolet absorber: 0.1%, antioxidant: 0.15%, auxiliary antioxidant: 0.5%, coupling agent: 0.05% and antibacterial mildew preventive: 0.1%, toner: 0.1 percent.
The embodiment of the invention provides a preparation method of an indoor and outdoor antibacterial and mildewproof modified engineering plastic film, which comprises the following preparation steps:
s1, firstly, stirring and mixing raw materials of polyvinylidene fluoride and polymethyl methacrylate according to the corresponding percentage mass, wherein the stirring and mixing steps comprise the following steps: placing the raw materials into a crusher, and crushing the raw materials into mixed powder particles of 30-35 meshes at the rotating speed of 500-550 revolutions per minute;
s2, placing the mixed powder particles, the toner, the auxiliary ultraviolet absorbent, the auxiliary antioxidant and the liquid coupling agent in a high-speed stirrer, controlling the rotating speed of the high-speed stirrer to be 3000-5000 revolutions per minute, heating the mixture under the friction action of high-speed stirring, keeping high-speed stirring for 10-15 minutes when the temperature of the high-speed stirrer is stabilized at 90-120 ℃, placing the light stabilizer, the heat stabilizer, the main ultraviolet absorbent, the auxiliary ultraviolet absorbent, the main antioxidant, the auxiliary antioxidant and the antibacterial mildew preventive in the high-speed stirrer in corresponding percentage mass after mixing, stirring at high speed again, and obtaining a mixture A after stirring.
S3, placing the mixture A in a negative pressure vacuum heating bin, controlling the temperature of the bin to be 60-90 ℃, preheating and dehumidifying the mixed raw material, controlling the duration time of heating and dehumidifying to be 2-4 hours, controlling the air output to be 1-5 cubic meters/minute, then respectively injecting the mixture A and another outsourcing modified PMMA (organic glass) raw material into a 65 type single-screw extruder and a 75 type single-screw extruder, setting the working temperature of the 65 type single-screw extruder to be 170-220 ℃, setting the working temperature of the 75 type single-screw extruder to be 180-230 ℃, setting the working temperature of a modified antibacterial mildew-proof PVDF layer to be 180-230 ℃, adopting a co-extrusion casting process for the 65 type single-screw extruder and the 75 type single-screw extruder, adopting an automatic temperature control double-layer co-extrusion die and an in-die compounding mode to obtain a co-extrusion film finished product, cooling the double-layer co-extrusion composite film to be 20-30 ℃, and (4) rolling and storing at the speed of 20-70 meters per minute by using a rolling machine. The width of the obtained co-extrusion film finished product is 300-2200 mm, the screw length agent ratio of a 65-type single screw extruder to a 75-type single screw extruder is 32:32, the compression ratio of the two dies is 2.55, the thickness of the film produced by the 75-type single screw extruder is 90-170 micrometers, and the thickness of the film produced by the 65-type single screw extruder is 3-30 micrometers.
Example two:
the embodiment of the invention provides an indoor and outdoor antibacterial and mildewproof modified engineering plastic film, which comprises the following components in percentage by mass: polyvinylidene fluoride: 10%, polymethyl methacrylate: 85%, light stabilizer: 2% and a heat stabilizer: 1 percent; main ultraviolet absorber: 1% of auxiliary ultraviolet absorber: 0.15%, antioxidant: 0.1% and auxiliary antioxidant: 0.05%, coupling agent: 0.5% and antibacterial mildew preventive: 0.1%, toner: 0.1 percent.
The embodiment of the invention provides a preparation method of an indoor and outdoor antibacterial and mildewproof modified engineering plastic film, which comprises the following preparation steps:
s1, firstly, stirring and mixing raw materials of polyvinylidene fluoride and polymethyl methacrylate according to the corresponding percentage mass, wherein the stirring and mixing steps comprise the following steps: placing the raw materials into a crusher, and crushing the raw materials into mixed powder particles of 30-35 meshes at the rotating speed of 500-550 revolutions per minute;
s2, placing the mixed powder particles, the toner, the auxiliary ultraviolet absorbent, the auxiliary antioxidant and the liquid coupling agent in a high-speed stirrer, controlling the rotating speed of the high-speed stirrer to be 3000-5000 revolutions per minute, heating the mixture under the friction action of high-speed stirring, keeping high-speed stirring for 10-15 minutes when the temperature of the high-speed stirrer is stabilized at 90-120 ℃, placing the light stabilizer, the heat stabilizer, the main ultraviolet absorbent, the auxiliary ultraviolet absorbent, the main antioxidant, the auxiliary antioxidant and the antibacterial mildew preventive in the high-speed stirrer in corresponding percentage mass after mixing, stirring at high speed again, and obtaining a mixture A after stirring.
S3, placing the mixture A in a negative pressure vacuum heating bin, controlling the temperature of the bin to be 60-90 ℃, preheating and dehumidifying the mixed raw material, controlling the duration time of heating and dehumidifying to be 2-4 hours, controlling the air output to be 1-5 cubic meters/minute, then respectively injecting the mixture A and another outsourcing modified PMMA (organic glass) raw material into a 65 type single-screw extruder and a 75 type single-screw extruder, setting the working temperature of the 65 type single-screw extruder to be 170-220 ℃, setting the working temperature of the 75 type single-screw extruder to be 180-230 ℃, setting the working temperature of a modified antibacterial mildew-proof PVDF layer to be 180-230 ℃, adopting a co-extrusion casting process for the 65 type single-screw extruder and the 75 type single-screw extruder, adopting an automatic temperature control double-layer co-extrusion die and an in-die compounding mode to obtain a co-extrusion film finished product, cooling the double-layer co-extrusion composite film to be 20-30 ℃, and (4) rolling and storing at the speed of 20-70 meters per minute by using a rolling machine. The width of the obtained co-extruded film finished product is 300-2200 mm, the screw length agent ratio of a 65-type single screw extruder to a 75-type single screw extruder is 32:32, the compression ratio of the two dies is 2.55, the thickness of the film produced by the 75-type single screw extruder is 90-170 micrometers, and the thickness of the film produced by the 65-type single screw extruder is 3-30 micrometers.
Example three:
the embodiment of the invention provides an indoor and outdoor antibacterial and mildewproof modified engineering plastic film, which comprises the following components in percentage by mass: polyvinylidene fluoride: 5%, polymethyl methacrylate: 90%, light stabilizer: 1% and a heat stabilizer: 0.5 percent; main ultraviolet absorber: 0.2%, auxiliary uv absorber: 0.2%, antioxidant: 0.2% and auxiliary antioxidant: 0.2%, coupling agent: 0.5% and antibacterial mildew preventive: 2%, toner: 0.2 percent.
The embodiment of the invention provides a preparation method of an indoor and outdoor antibacterial and mildewproof modified engineering plastic film, which comprises the following preparation steps:
s1, firstly, stirring and mixing raw materials of polyvinylidene fluoride and polymethyl methacrylate according to the corresponding percentage mass, wherein the stirring and mixing steps comprise the following steps: placing the raw materials into a crusher, and crushing the raw materials into mixed powder particles of 30-35 meshes at the rotating speed of 500-550 revolutions per minute;
s2, placing the mixed powder particles, the toner, the auxiliary ultraviolet absorbent, the auxiliary antioxidant and the liquid coupling agent in a high-speed stirrer, controlling the rotating speed of the high-speed stirrer to be 3000-5000 revolutions per minute, heating the mixture under the friction action of high-speed stirring, keeping high-speed stirring for 10-15 minutes when the temperature of the high-speed stirrer is stabilized at 90-120 ℃, placing the light stabilizer, the heat stabilizer, the main ultraviolet absorbent, the auxiliary ultraviolet absorbent, the main antioxidant, the auxiliary antioxidant and the antibacterial mildew preventive in the high-speed stirrer in corresponding percentage mass after mixing, stirring at high speed again, and obtaining a mixture A after stirring.
S3, placing the mixture A in a negative pressure vacuum heating bin, controlling the temperature of the bin to be 60-90 ℃, preheating and dehumidifying the mixed raw material, controlling the duration time of heating and dehumidifying to be 2-4 hours, controlling the air output to be 1-5 cubic meters/minute, then respectively injecting the mixture A and another outsourcing modified PMMA (organic glass) raw material into a 65 type single-screw extruder and a 75 type single-screw extruder, setting the working temperature of the 65 type single-screw extruder to be 170-220 ℃, setting the working temperature of the 75 type single-screw extruder to be 180-230 ℃, setting the working temperature of a modified antibacterial mildew-proof PVDF layer to be 180-230 ℃, adopting a co-extrusion casting process for the 65 type single-screw extruder and the 75 type single-screw extruder, adopting an automatic temperature control double-layer co-extrusion die and an in-die compounding mode to obtain a co-extrusion film finished product, cooling the double-layer co-extrusion composite film to be 20-30 ℃, and (4) rolling and storing at the speed of 20-70 meters per minute by using a rolling machine. The width of the obtained co-extruded film finished product is 300-2200 mm, the screw length agent ratio of a 65-type single screw extruder to a 75-type single screw extruder is 32:32, the compression ratio of the two dies is 2.55, the thickness of the film produced by the 75-type single screw extruder is 90-170 micrometers, and the thickness of the film produced by the 65-type single screw extruder is 3-30 micrometers.
Example four:
the embodiment of the invention provides an indoor and outdoor antibacterial and mildewproof modified engineering plastic film, which comprises the following components in percentage by mass: polyvinylidene fluoride: 5%, polymethyl methacrylate: 90%, light stabilizer: 0.2%, heat stabilizer: 0.2 percent; main ultraviolet absorber: 1% of auxiliary ultraviolet absorber: 1% and antioxidant: 0.3% and auxiliary antioxidant: 0.3%, coupling agent: 0.8 percent, antibacterial mildew preventive: 1%, toner: 0.2 percent.
The embodiment of the invention provides a preparation method of an indoor and outdoor antibacterial and mildewproof modified engineering plastic film, which comprises the following preparation steps:
s1, firstly, stirring and mixing raw materials of polyvinylidene fluoride and polymethyl methacrylate according to the corresponding percentage mass, wherein the stirring and mixing steps comprise the following steps: placing the raw materials into a crusher, and crushing the raw materials into mixed powder particles of 30-35 meshes at the rotating speed of 500-550 revolutions per minute;
s2, placing the mixed powder particles, the toner, the auxiliary ultraviolet absorbent, the auxiliary antioxidant and the liquid coupling agent in a high-speed stirrer, controlling the rotating speed of the high-speed stirrer to be 3000-5000 revolutions per minute, heating the mixture under the friction action of high-speed stirring, keeping high-speed stirring for 10-15 minutes when the temperature of the high-speed stirrer is stabilized at 90-120 ℃, placing the light stabilizer, the heat stabilizer, the main ultraviolet absorbent, the auxiliary ultraviolet absorbent, the main antioxidant, the auxiliary antioxidant and the antibacterial mildew preventive in the high-speed stirrer in corresponding percentage mass after mixing, stirring at high speed again, and obtaining a mixture A after stirring.
S3, placing the mixture A in a negative pressure vacuum heating bin, controlling the temperature of the bin to be 60-90 ℃, preheating and dehumidifying the mixed raw material, controlling the duration time of heating and dehumidifying to be 2-4 hours, controlling the air output to be 1-5 cubic meters/minute, then respectively injecting the mixture A and another outsourcing modified PMMA (organic glass) raw material into a 65 type single-screw extruder and a 75 type single-screw extruder, setting the working temperature of the 65 type single-screw extruder to be 170-220 ℃, setting the working temperature of the 75 type single-screw extruder to be 180-230 ℃, setting the working temperature of a modified antibacterial mildew-proof PVDF layer to be 180-230 ℃, adopting a co-extrusion casting process for the 65 type single-screw extruder and the 75 type single-screw extruder, adopting an automatic temperature control double-layer co-extrusion die and an in-die compounding mode to obtain a co-extrusion film finished product, cooling the double-layer co-extrusion composite film to be 20-30 ℃, and (4) rolling and storing at the speed of 20-70 meters per minute by using a rolling machine. The width of the obtained co-extruded film finished product is 300-2200 mm, the screw length agent ratio of a 65-type single screw extruder to a 75-type single screw extruder is 32:32, the compression ratio of the two dies is 2.55, the thickness of the film produced by the 75-type single screw extruder is 90-170 micrometers, and the thickness of the film produced by the 65-type single screw extruder is 3-30 micrometers.
Example five:
the embodiment of the invention provides an indoor and outdoor antibacterial and mildewproof modified engineering plastic film, which comprises the following components in percentage by mass: polyvinylidene fluoride: 2%, polymethyl methacrylate: 94%, light stabilizer: 0.3%, heat stabilizer: 0.2 percent; main ultraviolet absorber: 0.5%, auxiliary uv absorber: 0.5%, antioxidant: 0.3% and auxiliary antioxidant: 0.3%, coupling agent: 0.8% of antibacterial mildew preventive: 1%, toner: 0.1 percent.
The embodiment of the invention provides a preparation method of an indoor and outdoor antibacterial and mildewproof modified engineering plastic film, which comprises the following preparation steps:
s1, firstly, stirring and mixing raw materials of polyvinylidene fluoride and polymethyl methacrylate according to the corresponding percentage mass, wherein the stirring and mixing steps comprise the following steps: placing the raw materials into a crusher, and crushing the raw materials into mixed powder particles of 30-35 meshes at the rotating speed of 500-550 revolutions per minute;
s2, placing the mixed powder particles, the toner, the auxiliary ultraviolet absorbent, the auxiliary antioxidant and the liquid coupling agent in a high-speed stirrer, controlling the rotating speed of the high-speed stirrer to be 3000-5000 revolutions per minute, heating the mixture under the friction action of high-speed stirring, keeping high-speed stirring for 10-15 minutes when the temperature of the high-speed stirrer is stabilized at 90-120 ℃, placing the light stabilizer, the heat stabilizer, the main ultraviolet absorbent, the auxiliary ultraviolet absorbent, the main antioxidant, the auxiliary antioxidant and the antibacterial mildew preventive in the high-speed stirrer in corresponding percentage mass after mixing, stirring at high speed again, and obtaining a mixture A after stirring.
S3, placing the mixture A in a negative pressure vacuum heating bin, controlling the temperature of the bin to be 60-90 ℃, preheating and dehumidifying the mixed raw material, controlling the duration time of heating and dehumidifying to be 2-4 hours, controlling the air output to be 1-5 cubic meters/minute, then respectively injecting the mixture A and another outsourcing modified PMMA (organic glass) raw material into a 65 type single-screw extruder and a 75 type single-screw extruder, setting the working temperature of the 65 type single-screw extruder to be 170-220 ℃, setting the working temperature of the 75 type single-screw extruder to be 180-230 ℃, setting the working temperature of a modified antibacterial mildew-proof PVDF layer to be 180-230 ℃, adopting a co-extrusion casting process for the 65 type single-screw extruder and the 75 type single-screw extruder, adopting an automatic temperature control double-layer co-extrusion die and an in-die compounding mode to obtain a co-extrusion film finished product, cooling the double-layer co-extrusion composite film to be 20-30 ℃, and (4) rolling and storing at the speed of 20-70 meters per minute by using a rolling machine. The width of the obtained co-extruded film finished product is 300-2200 mm, the screw length agent ratio of a 65-type single screw extruder to a 75-type single screw extruder is 32:32, the compression ratio of the two dies is 2.55, the thickness of the film produced by the 75-type single screw extruder is 90-170 micrometers, and the thickness of the film produced by the 65-type single screw extruder is 3-30 micrometers.
Experiment detection data, a common engineering plastic film and the modified engineering plastic film are taken to carry out sealing antibacterial and outdoor weather-proof tests, the antibacterial and mildew-proof effects of the modified engineering plastic film can reach 99.99%, and the modified engineering plastic film passes 12000-hour accelerated aging tests, is equivalent to the outdoor weather-proof 30-year requirement, and completely meets the outdoor long-term use requirement and the indoor and outdoor antibacterial and mildew-proof effects.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. An indoor and outdoor antibacterial mildew-proof modified engineering plastic film is characterized in that: the composite material comprises the following components in percentage by mass: polyvinylidene fluoride: 2-55% and polymethyl methacrylate: 40-95% of a light stabilizer: 0.01-1%, and a heat stabilizer: 0.01-1%; main ultraviolet absorber: 0.01-2%, auxiliary ultraviolet absorbent: 0.01-2%, antioxidant: 0.01-1%, auxiliary antioxidant: 0.01-1%, coupling agent: 0.01-2% of antibacterial mildew preventive: 0.01-2%, toner: 0.01 to 2 percent.
2. The preparation method of the indoor and outdoor antibacterial and mildewproof modified engineering plastic film according to claim 1, which is characterized by comprising the following steps of: the preparation method comprises the following preparation steps:
s1, firstly, stirring and mixing raw materials of polyvinylidene fluoride and polymethyl methacrylate according to the mass percentage;
s2, placing the mixed powder particles, the toner, the auxiliary ultraviolet absorbent, the auxiliary antioxidant and the liquid coupling agent in a high-speed stirrer, controlling the rotating speed of the high-speed stirrer to be 3000-5000 revolutions per minute, heating the mixture under the friction action of high-speed stirring, keeping high-speed stirring for 10-15 minutes when the temperature of the high-speed stirrer is stabilized at 90-120 ℃, placing the light stabilizer, the heat stabilizer, the main ultraviolet absorbent, the auxiliary ultraviolet absorbent, the main antioxidant, the auxiliary antioxidant and the antibacterial mildew preventive in the high-speed stirrer in corresponding percentage mass after mixing, stirring at high speed again, and obtaining a mixture A after stirring.
S3, placing the mixture A in a negative pressure vacuum heating bin, controlling the temperature of the bin to be 60-90 ℃, preheating and dehumidifying the mixed raw material, controlling the duration time of heating and dehumidifying to be 2-4 hours, controlling the air output to be 1-5 cubic meters/minute, then respectively injecting the mixture A and another outsourcing modified PMMA (organic glass) raw material into a 65 type single-screw extruder and a 75 type single-screw extruder, setting the working temperature of the 65 type single-screw extruder to be 170-220 ℃, setting the working temperature of the 75 type single-screw extruder to be 180-230 ℃, setting the working temperature of a modified antibacterial mildew-proof PVDF layer to be 180-230 ℃, adopting a co-extrusion casting process for the 65 type single-screw extruder and the 75 type single-screw extruder, adopting an automatic temperature control double-layer co-extrusion die and an in-die compounding mode to obtain a co-extrusion film finished product, cooling the double-layer co-extrusion composite film to be 20-30 ℃, and (4) rolling and storing at the speed of 20-70 meters per minute by using a rolling machine.
3. The preparation method of the indoor and outdoor antibacterial and mildewproof modified engineering plastic film according to claim 2, which is characterized by comprising the following steps: in the step S1, the stirring and mixing step includes the following steps: the raw materials are placed in a crusher and crushed to form mixed powder particles of 20-100 meshes at the rotating speed of 500-550 revolutions per minute.
4. The preparation method of the indoor and outdoor antibacterial and mildewproof modified engineering plastic film according to claim 2, which is characterized by comprising the following steps: in the step S2, the rotation speed of the high-speed stirrer is controlled between 3000 and 5000 revolutions, and the mixture is heated to 90-120 ℃ through high-speed friction.
5. The preparation method of the indoor and outdoor antibacterial and mildewproof modified engineering plastic film according to claim 2, which is characterized by comprising the following steps of: and in the step S2, when the temperature of the stirrer rises to 90-120 ℃, high-speed stirring is kept for 10-15 minutes, so that the mixture is fully dispersed and mixed.
6. The preparation method of the indoor and outdoor antibacterial and mildewproof modified engineering plastic film according to claim 2, which is characterized by comprising the following steps: and in the step S3, the mixture A is placed in a negative-pressure vacuum heating bin, the temperature of the bin is controlled to be 60-90 ℃, and the mixed raw materials are preheated and dehumidified.
7. The preparation method of the indoor and outdoor antibacterial and mildewproof modified engineering plastic film according to claim 2, which is characterized by comprising the following steps: and in the step S3, respectively injecting a prefabricated raw material into a 65-type single-screw extruder and another outsourced modified PMMA (polymethyl methacrylate) raw material into a 75-type single-screw extruder, setting the working temperature of the 65-type single-screw extruder at 170-220 ℃, setting the working temperature of the 75-type single-screw extruder at 180-230 ℃, setting the working temperature of the modified antibacterial and mildewproof PVDF layer at 180-230 ℃, adopting a co-extrusion casting process for the 65-type single-screw extruder and the 75-type single-screw extruder, adopting an automatic temperature control double-layer co-extrusion die and an in-die compounding mode to obtain a co-extrusion film finished product, cooling the double-layer co-extrusion composite film to 20-30 ℃, and then using a winding machine to wind and store the double-layer co-extrusion composite film at the speed of 20-70 meters per minute.
8. The preparation method of the indoor and outdoor antibacterial and mildewproof modified engineering plastic film according to claim 7, which is characterized by comprising the following steps of: in the step S3, the width of the obtained co-extruded film finished product is 300-2200 mm, the screw length agent ratio of the 65-type single-screw extruder to the 75-type single-screw extruder is 32:1, the compression ratio of the two dies is 2.55, the thickness of the film produced by the 75-type single-screw extruder is 20-170 micrometers, and the thickness of the film produced by the 65-type single-screw extruder is 3-30 micrometers.
CN202210412780.5A 2022-04-19 2022-04-19 Indoor and outdoor antibacterial and mildewproof modified engineering plastic film Pending CN114806043A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000072927A (en) * 1998-08-27 2000-03-07 Mitsuboshi Belting Ltd Antibacterial antimold resin composition
CN106084609A (en) * 2016-06-22 2016-11-09 武汉纺织大学 A kind of transparent plastic with antibacterial and mouldproof ability and preparation method thereof
CN106366519A (en) * 2016-09-19 2017-02-01 浙江凯阳新材料股份有限公司 Polyvinylidene fluoride thin film and preparing method thereof
CN108215411A (en) * 2017-12-22 2018-06-29 嘉兴市高正高分子材料有限公司 A kind of polypropylene/polyvinylidene fluoride co-extrusion protective film and preparation method thereof
CN111560151A (en) * 2020-04-26 2020-08-21 上海杰亘实业有限公司 PVDF/PMMA modified engineering plastic for film production

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000072927A (en) * 1998-08-27 2000-03-07 Mitsuboshi Belting Ltd Antibacterial antimold resin composition
CN106084609A (en) * 2016-06-22 2016-11-09 武汉纺织大学 A kind of transparent plastic with antibacterial and mouldproof ability and preparation method thereof
CN106366519A (en) * 2016-09-19 2017-02-01 浙江凯阳新材料股份有限公司 Polyvinylidene fluoride thin film and preparing method thereof
CN108215411A (en) * 2017-12-22 2018-06-29 嘉兴市高正高分子材料有限公司 A kind of polypropylene/polyvinylidene fluoride co-extrusion protective film and preparation method thereof
CN111560151A (en) * 2020-04-26 2020-08-21 上海杰亘实业有限公司 PVDF/PMMA modified engineering plastic for film production

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