CN110577714A - formula and preparation method of reticulate PE film with higher strength - Google Patents
formula and preparation method of reticulate PE film with higher strength Download PDFInfo
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Abstract
the invention discloses a formula and a preparation method of a reticulate PE film with higher strength, which are characterized in that acrylic resin, a stilbene derivative, a curing agent, a hardening agent, aluminum tripolyphosphate, an extender pigment and ethyl acetate are mixed in proportion, sodium silicate, anion powder, ammonium polyphosphate, p-nitrobenzoic acid, oxidized polyethylene wax, nano titanium dioxide, stearic acid monoglyceride and polyvinyl butyral are added for modification, and finally antistatic master batches, melamine resin, benzotriazole, nylon fibers and methacrylic acid are added for further modification, so that the produced PE film is easier to tear from the surface of metal; the antibacterial effect is good, and mildew or black spots can not be generated after the antibacterial agent is placed for a long time; the strength of the PE film is greatly improved, so that the PE film has better pressure resistance; the antistatic effect is good, and the contamination of dust is greatly reduced; can absorb ultraviolet rays in light to a greater extent, so that the product in the package can be well protected.
Description
Technical Field
The invention relates to the technical field of PE film production, in particular to a reticulate pattern PE film formula with higher strength and a preparation method thereof.
Background
the PE film is generally used for protecting the surface of a product, such as an aluminum profile protective film, and can prevent the surface of the product from being worn during transportation, processing, and the like, and thus the appearance integrity of the product is affected. In order to make the PE film adhere to the surface of the object firmly, the PE film is also coated with an adhesive layer. In the prior art, adhesives are classified into aqueous and solvent adhesives. The water-based adhesive takes water as a solvent, has low price and high production rate, and compared with a solvent-based adhesive, the water-based adhesive does not contain a volatile organic solvent, can effectively reduce the VOC value, meets the environmental protection requirement, and is favored by consumers and manufacturers. However, the bonding strength and the scratch resistance of the water-based adhesive are not as good as those of a solvent-based adhesive, and the protective film is easy to scratch, wear, warp and drop in the transportation process of a product, so that the functionality of the protective film is reduced, and the use prospect of the protective film is limited. However, the existing PE film also has several problems as follows:
(1) When the existing PE film is used, the surface of the whole PE film has certain viscosity, so that the PE film is not easy to tear off and easy to tear off when being used by people, and is inconvenient for people to operate; (2) the existing PE film generally does not have the function of electrostatic adsorption, so that dust in the air can be adhered to a protected article when the PE film is used, part of the PE film is doped with an electrostatic material in a preparation material, but the dust cannot be intensively adsorbed at a certain position, so that the PE film is difficult to clean and the adsorption effect is poor, and part of the PE film is provided with an electrostatic layer on the surface, but the connection between the electrostatic layer and the PE film is not stable enough; (3) the existing PE film has no antibacterial function, so that bacteria in the air are easily adhered to the surface of the PE film when the PE film is used, mildew or black spots are generated after a long time, and the quality of a packaged product is influenced; (4) because the PE film is generally used for packaging products, the existing PE film does not have the function of ultraviolet rays at all, so that sunlight can directly irradiate the product package when in use, and the ultraviolet rays can have certain influence on the quality of the product; (5) the existing PE film has poor strength, and is easy to deform or damage when a foreign object collides or extrudes.
Disclosure of Invention
The invention aims to provide a reticulate pattern PE film formula which is low in manufacturing cost, easy to tear, capable of preventing static electricity, good in antibacterial effect, capable of preventing ultraviolet rays and high in strength and a preparation method thereof.
In order to solve the technical problems, the invention adopts the technical scheme that: a reticulate pattern PE film formula with higher strength is characterized in that: the paint comprises a component A and a component B, wherein the component A comprises the following components in parts by weight:
Wherein the component B is 80 to 160 parts of ethyl acetate.
preferably, the reticulated PE film formulation with higher strength is one in which the curing agent is composed of a mixture of one or more of aliphatic amines, aromatic amines, amidoamines, and latent curing amines.
preferably, the above-mentioned reticulated PE film formulation of higher strength, wherein the stiffening agent consists of one or a mixture of two or more of vinyl-containing polysiloxane, nanosilica, aqueous polyurea.
preferably, the textured PE film formulation with higher strength comprises an extender pigment comprising one or a mixture of two or more of calcium carbonate, magnesium silicate, aluminum powder, barium metaborate and barium sulfate.
Preferably, the formulation of reticulated PE film with higher strength is described above, wherein the negative ion powder is composed of a mixture of one or more of aluminum, magnesium, iron, lithium cyclic structure silicate materials characterized by containing boron.
A method of producing a strong textured PE film according to claim 1 wherein: it comprises the following steps:
(1) adding the acrylic resin, the stilbene derivative, the curing agent, the hardening agent, the aluminum tripolyphosphate, the extender pigment and the ethyl acetate into a low-speed stirrer, and stirring for 30-60min at the temperature of 60-80 ℃, wherein the rotating speed is 400-600 r/min;
(2) adding the sodium silicate and the anion powder which are proportioned in the solution obtained in the step (1), and irradiating for 30-60min under the condition of ultraviolet rays, wherein the intensity of the ultraviolet rays is 2000 uW/cm;
(3) Adding the solution obtained in the step (2) into the ammonium polyphosphate, the p-nitrobenzoic acid, the oxidized polyethylene wax, the nano titanium dioxide, the stearic acid monoglyceride and the polyvinyl butyral with the formula amount, and stirring for 20-30 min at the temperature of 25-30 ℃, wherein the rotating speed is 600-800 r/min;
(4) Adding the solution obtained in the step (3) into the antistatic master batch with the formula amount, stirring for 5-10min at 80-90 ℃ by using a high-speed disperser, wherein the rotating speed is 1500-2000r/min, standing for 30-35min, adding melamine resin, stirring for 5-10min at 60-80 ℃, wherein the rotating speed is 2000-3000r/min, cooling to 25-30 ℃, and standing for 5-10 min;
(5) adding the solution obtained in the step (4) into a reaction kettle, adding benzotriazole and nylon fiber in the formula amount, controlling the temperature in the reaction kettle to be 120-160 ℃, and the pressure to be 10-12Mpa for reaction for 20-40min, and uniformly stirring the whole solution in the process;
(6) adding the solution obtained in the step (5) into a colloid mill, adding the methacrylic acid with the formula amount, controlling the colloid mill to work for 30-50min, and enabling the processed material to generate downward spiral impact force by the self weight or pump pressurization, and enabling the material to be effectively emulsified, dispersed, homogenized and crushed under the physical actions of strong shearing force, friction force, high-frequency vibration, high-speed vortex and the like when passing through the gap between the fixed teeth and the rotating teeth so as to achieve the effect of superfine emulsification of the material;
(7) And (3) adding the solution obtained in the step (6) into a film blowing machine, heating the solution by a heating device in the film blowing machine, removing impurities from the molten plastic through a filter screen of a machine head, discharging the molten plastic from a die head die orifice, performing inflation and air ring cooling, pressing by a herringbone plate, finally performing engraving by an anilox roller, processing an anilox on the inner surface of the film, and finally reeling by a traction roller to roll the finished film into a cylinder.
The invention has the advantages and beneficial effects that:
(1) This scheme is through processing out the decorative pattern of reticulation form through the reticulation roller on the internal surface of PE membrane, compare in the PE membrane of traditional no reticulation, the PE membrane that has the reticulation has reduced with the area of metal surface contact, this just makes this PE membrane cladding when the metal surface and the tension between the metal surface reduce by a wide margin to make this PE membrane more easily tear from the surperficial of metal when later stage uses, better satisfying people's user demand.
(2) according to the scheme, the surface of the nano titanium dioxide generates surface hydroxyl groups to capture free holes due to water activation to form hydroxyl free radicals, free electrons can be combined with absorption oxygen quickly to generate superoxide free radicals, surrounding bacteria and viruses can be killed, a large number of negative ions can be released during use, and the negative ions are confirmed to be effective means for killing germs and purifying air.
(3) The process is simple, the proportion of each material can be well controlled, the PE film with excellent performance is obtained, particularly, the hardening agent and the nylon fiber are added into the PE film, and the hardening agent and the nylon fiber can greatly improve the strength of the PE film, so that the PE film has better pressure resistance.
(4) the antistatic master batch is added into the PE film, the master batch is prepared by adopting an antistatic agent, matching with an imported auxiliary agent and a carrier resin, and mixing and granulating, has good compatibility with the resin, and has excellent dispersion performance and weather resistance, and the product is added into plastic, so that the static electricity generated by the insulating property of a high polymer can be avoided, the product can adapt to the packaging requirements of most products and the production of special antistatic products, and has good effect on the surface dust prevention of the product;
(5) The PE film is added with a proper amount of benzotriazole which belongs to an ultraviolet absorbent and is the most main type of light stabilizer, and 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole (UV-P), 2- (2 '-hydroxy-3' -tert-butyl-5 '-methylphenyl) -5-chlorobenzotriazole (UV-326), 2- (2' -hydroxy-3 ',5' -di-tert-butylphenyl) -5-chlorobenzotriazole (UV-327) and the like are commonly used, so that the PE film can absorb ultraviolet rays in light to a large extent, and products in a package can be well protected.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly and clearly apparent, the technical solutions in the embodiments of the present invention are described below in detail and completely with reference to the embodiments, 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)
A reticulate pattern PE film formula with higher strength is characterized in that: the paint comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 300 parts of acrylic resin, 30 parts of stilbene derivative, 10 parts of curing agent, 10 parts of hardening agent, 10 parts of aluminum tripolyphosphate, 6 parts of extender pigment, 10 parts of sodium silicate, 10 parts of ammonium polyphosphate, 2 parts of p-nitrobenzoic acid, 20 parts of oxidized polyethylene wax, 10 parts of anion powder, 10 parts of nano titanium dioxide, 10 parts of glycerol monostearate, 20 parts of polyvinyl butyral, 8 parts of antistatic master batch, 10 parts of melamine resin, 8 parts of benzotriazole, 10 parts of nylon fiber and 8 parts of methacrylic acid, wherein the component B is 80 parts of ethyl acetate.
Example (2)
A reticulate pattern PE film formula with higher strength is characterized in that: the paint comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 400 parts of acrylic resin, 40 parts of stilbene derivative, 20 parts of curing agent, 20 parts of hardening agent, 15 parts of aluminum tripolyphosphate, 8 parts of extender pigment, 25 parts of sodium silicate, 15 parts of ammonium polyphosphate, 5 parts of p-nitrobenzoic acid, 25 parts of oxidized polyethylene wax, 20 parts of anion powder, 15 parts of nano titanium dioxide, 20 parts of glycerol monostearate, 30 parts of polyvinyl butyral, 12 parts of antistatic master batch, 15 parts of melamine resin, 12 parts of benzotriazole, 15 parts of nylon fiber and 12 parts of methacrylic acid, wherein the component B is 120 parts of ethyl acetate.
Example (3)
a reticulate pattern PE film formula with higher strength is characterized in that: the paint comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 500 parts of acrylic resin, 50 parts of stilbene derivative, 30 parts of curing agent, 30 parts of hardening agent, 20 parts of aluminum tripolyphosphate, 10 parts of extender pigment, 40 parts of sodium silicate, 20 parts of ammonium polyphosphate, 8 parts of p-nitrobenzoic acid, 30 parts of oxidized polyethylene wax, 30 parts of anion powder, 20 parts of nano titanium dioxide, 30 parts of glycerol monostearate, 40 parts of polyvinyl butyral, 16 parts of antistatic master batch, 20 parts of melamine resin, 16 parts of benzotriazole, 20 parts of nylon fiber and 16 parts of methacrylic acid, wherein the component B is 160 parts of ethyl acetate.
The acrylic resin is a generic term of polymers of acrylic acid, methacrylic acid and derivatives thereof, the acrylic resin is a polymer which has a certain functional group in the structure and forms a network structure by reacting with the functional group in the added amino resin, epoxy resin, polyurethane and the like when melted at high temperature, and the thermosetting resin is generally relatively low in molecular weight. The acrylic film has excellent fullness, luster, hardness and solvent resistance, does not change color or turn yellow when being baked at high temperature, and the thermoplastic acrylic resin does not generate further crosslinking in the film forming process, so that the acrylic film has larger relative molecular weight, good light and color retention, water and chemical resistance and quick drying.
According to the scheme, the surface of the nano titanium dioxide generates surface hydroxyl groups to capture free holes due to water activation to form hydroxyl free radicals, free electrons can be combined with absorption oxygen quickly to generate superoxide free radicals, surrounding bacteria and viruses can be killed, a large number of negative ions can be released during use, and the negative ions are confirmed to be effective means for killing germs and purifying air.
Benzotriazole belongs to ultraviolet absorbent and is the most main type of light stabilizer by adding a proper amount of benzotriazole into PE film, and is commonly 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole (UV-P), 2- (2 '-hydroxy-3' -tert-butyl-5 '-methylphenyl) -5-chlorobenzotriazole (UV-326), 2- (2' -hydroxy-3 ',5' -di-tert-butylphenyl) -5-chlorobenzotriazole (UV-327) and the like, meanwhile, the stilbene derivative is added, and has stronger ultraviolet absorption performance, can absorb ultraviolet rays in light to a greater extent, so that the product in the package can be well protected.
By adding the aluminum tripolyphosphate into the PE film, the aluminum tripolyphosphate is widely used in various primers and primer-topcoat integrated coatings, has good affinity with varnish, can be used together with various pigments and fillers, can also be used together with various antirust pigments to prepare various high-performance anticorrosive films, and greatly improves the corrosion resistance of the plastic film; the sodium silicate can improve the compactness, strength, impermeability, frost resistance, water resistance and the like of the film material.
The ammonium polyphosphate is one of organic polymer materials with the best comprehensive performance, resists high temperature of more than 400 ℃, has a long-term use temperature range of-200-300 ℃, has no obvious melting point at part, has high insulating property, can modify the whole PE film, and greatly improves the heat resistance of the whole PE film; the fumed silica is one of extremely important high-tech superfine inorganic new materials, has porosity, no toxicity, no odor, no pollution, high temperature resistance, atom particle size of 7-40 nanometers and specific surface area of 70-400 m/g, and has various functions of reinforcement, thickening, thixotropy, extinction, ultraviolet resistance, sterilization and the like; the molecular general formula of the ammonium polyphosphate is (NH4) (n +2) Pn0(3n +1), the ammonium polyphosphate is nontoxic and tasteless, does not generate corrosive gas, has small hygroscopicity and high thermal stability, and is a non-halogen flame retardant with excellent performance; the main functions of the p-nitrobenzoic acid, the methacrylic acid and the aliphatic curing agent are to modify the coating, so that the coating can be conveniently emulsified.
Wherein the anion powder is composed of one or more than two of silicate substances with aluminum, magnesium, iron and lithium ring structure characterized by containing boron, when the anion powder is coated on a wall body, the anion powder can continuously release anions to the air, and when the anion powder is used, a large amount of anions can be released, so that the density of the anions in the space is kept at 1400-1600/CM3The mechanism of the anion is mainly that after the anion is combined with bacteria, the bacteria generate structural change or energy transfer, so that the bacteria die.
the extender pigment is composed of one or a mixture of more than two of calcium carbonate, magnesium silicate, aluminum powder, barium metaborate and barium sulfate, so that the color of the coating can be adjusted according to the requirements of the use environment; the stabilizer is triazole compound and zinc stearate, and has the main purposes of slowing down reaction, maintaining chemical balance, reducing surface tension, preventing light, heat decomposition or oxidation decomposition and the like, and prolonging the service life of the coating.
The oxidized polyethylene wax has the special properties of low viscosity, high softening point, good hardness and the like, no toxicity, good thermal stability, low high-temperature volatility, excellent dispersibility for fillers and pigments, excellent external lubricity, strong internal lubrication effect, coupling effect, good compatibility with polyolefin resin and the like, good moisture resistance at normal temperature, strong chemical resistance and excellent electrical property, and can improve the appearance of finished products.
Hard fatty acid glycerides (or glycerol mono-fatty acid esters) having two configurations, 1-MG and 2-MG. Monoglyceride can be classified into glycerin monostearate, glycerin monolaurate, glycerin monooleate, and the like according to the names of main constituent fatty acids, of which glycerin monostearate is most used as the yield. Monoglycerides are generally oily, greasy or waxy, have a pale yellow or ivory color, a greasy taste or no odor, which is related to the size and degree of saturation of the fatty groups, and have excellent organoleptic properties. Monoglycerides are insoluble in water and glycerol, but form stable aqueous dispersions in water. In addition, monoglyceride is a polyhydric alcohol type nonionic surfactant, so that the surface activity of the PE film can be improved; polyvinyl butyrals, because of their chemical composition, have their low-temperature flexibility increased by the addition of plasticizers (external plasticization), which also reduce the viscosity of the solution, so that very flexible films can be produced; the melamine resin is obtained by adding a third component into a polymerization system of melamine and formaldehyde for copolymerization. The third component is as follows: phenol, urea, benzoguanamine, etc. improve the cracking resistance and the pollution resistance of the PE film, and reduce the cost.
The antistatic master batch is added into the PE film, the master batch is prepared by adopting an antistatic agent, matching with an imported auxiliary agent and a carrier resin, and mixing and granulating, has good compatibility with the resin, and has excellent dispersion performance and weather resistance, and the product is added into plastic, so that the static electricity generated by the insulating property of a high polymer can be avoided, the product can adapt to the packaging requirements of most products and the production of special antistatic products, and has good effect on the surface dust prevention of the product;
The process is simple, the proportion of each material can be well controlled, the PE film with excellent performance is obtained, and particularly, a curing agent hardening agent and nylon fibers are added into the PE film, wherein the curing agent is composed of one or a mixture of more than two of aliphatic amines, aromatic amines, amido amines and latent curing amines, the hardening agent is composed of one or a mixture of more than two of vinyl-content polysiloxane, nano silicon dioxide and water-based polyurea, and the hardening agent and the nylon fibers can greatly improve the strength of the PE film, so that the PE film has better pressure resistance.
This scheme is through processing out the decorative pattern of reticulation form through the reticulation roller on the internal surface of PE membrane, compare in the PE membrane of traditional no reticulation, the PE membrane that has the reticulation has reduced with the area of metal surface contact, this just makes this PE membrane cladding when the metal surface and the tension between the metal surface reduce by a wide margin to make this PE membrane more easily tear from the surperficial of metal when later stage uses, better satisfying people's user demand.
The following table is a performance index for each example:
| Item | example (1) | Example (2) | Example (3) |
| thickness of PE film | 1mm | 1mm | 1mm |
| Indoor temperature | 25℃ | 25℃ | 25℃ |
| Hardness of | 20HRC | 40HRC | 60HRC |
| Ultraviolet protection grade | SPF20 | SPF30 | SPF40 |
| Water resistance rating | IP67 | IP67 | IP67 |
| Antistatic grade | 10^-6 | 10^-8 | 10^-10 |
| Melting Point | 120℃ | 140℃ | 160℃ |
| Concentration of negative ions | 1400/CM3 | 1500/CM3 | 1600/CM3 |
| Performance situation | good wine | good wine | superior food |
a method of producing a strong textured PE film according to claim 1 wherein: it comprises the following steps:
(1) Adding the acrylic resin, the stilbene derivative, the curing agent, the hardening agent, the aluminum tripolyphosphate, the extender pigment and the ethyl acetate into a low-speed stirrer, and stirring for 30-60min at the temperature of 60-80 ℃, wherein the rotating speed is 400-600 r/min;
(2) Adding the sodium silicate and the anion powder which are proportioned in the solution obtained in the step (1), and irradiating for 30-60min under the condition of ultraviolet rays, wherein the intensity of the ultraviolet rays is 2000 uW/cm;
(3) adding the solution obtained in the step (2) into the ammonium polyphosphate, the p-nitrobenzoic acid, the oxidized polyethylene wax, the nano titanium dioxide, the stearic acid monoglyceride and the polyvinyl butyral with the formula amount, and stirring for 20-30 min at the temperature of 25-30 ℃, wherein the rotating speed is 600-800 r/min;
(4) Adding the solution obtained in the step (3) into the antistatic master batch with the formula amount, stirring for 5-10min at 80-90 ℃ by using a high-speed disperser, wherein the rotating speed is 1500-2000r/min, standing for 30-35min, adding melamine resin, stirring for 5-10min at 60-80 ℃, wherein the rotating speed is 2000-3000r/min, cooling to 25-30 ℃, and standing for 5-10 min;
(5) Adding the solution obtained in the step (4) into a reaction kettle, adding benzotriazole and nylon fiber in the formula amount, controlling the temperature in the reaction kettle to be 120-160 ℃, and the pressure to be 10-12Mpa for reaction for 20-40min, and uniformly stirring the whole solution in the process;
(6) adding the solution obtained in the step (5) into a colloid mill, adding the methacrylic acid with the formula amount, controlling the colloid mill to work for 30-50min, and enabling the processed material to generate downward spiral impact force by the self weight or pump pressurization, and enabling the material to be effectively emulsified, dispersed, homogenized and crushed under the physical actions of strong shearing force, friction force, high-frequency vibration, high-speed vortex and the like when passing through the gap between the fixed teeth and the rotating teeth so as to achieve the effect of superfine emulsification of the material;
(7) and (3) adding the solution obtained in the step (6) into a film blowing machine, heating the solution by a heating device in the film blowing machine, removing impurities from the molten plastic through a filter screen of a machine head, discharging the molten plastic from a die head die orifice, performing inflation and air ring cooling, pressing by a herringbone plate, finally performing engraving by an anilox roller, processing an anilox on the inner surface of the film, and finally reeling by a traction roller to roll the finished film into a cylinder.
The applicant states that the present invention is illustrated by the above examples to show the detailed process equipment and process flow of the present invention, but the present invention is not limited to the above detailed process equipment and process flow, i.e. it does not mean that the present invention must rely on the above detailed process equipment and process flow to be implemented. It should be understood by those skilled in the art that any modification of the present invention, equivalent replacement of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., fall within the scope of the present invention.
Claims (6)
1. A reticulate pattern PE film formula with higher strength is characterized in that: the paint comprises a component A and a component B, wherein the component A comprises the following components in parts by weight:
wherein the component B is 80 to 160 parts of ethyl acetate.
2. A stronger textured PE film formulation according to claim 1 wherein: the curing agent is composed of one or a mixture of more than two of aliphatic amine, aromatic amine, amido amine and latent curing amine.
3. a stronger textured PE film formulation according to claim 1 wherein: the hardening agent is composed of one or a mixture of more than two of polysiloxane with vinyl content, nano silicon dioxide and water-based polyurea.
4. A stronger textured PE film formulation according to claim 1 wherein: the extender pigment is composed of one or a mixture of more than two of calcium carbonate, magnesium silicate, aluminum powder, barium metaborate and barium sulfate.
5. A stronger textured PE film formulation according to claim 1 wherein: the negative ion powder is composed of one or more than two of silicate substances with a ring structure of aluminum, magnesium, iron and lithium, which is characterized by containing boron.
6. A method of producing a strong textured PE film according to claim 1 wherein: it comprises the following steps:
(1) adding the acrylic resin, the stilbene derivative, the curing agent, the hardening agent, the aluminum tripolyphosphate, the extender pigment and the ethyl acetate into a low-speed stirrer, and stirring for 30-60min at the temperature of 60-80 ℃, wherein the rotating speed is 400-600 r/min;
(2) Adding the sodium silicate and the anion powder which are proportioned in the solution obtained in the step (1), and irradiating for 30-60min under the condition of ultraviolet rays, wherein the intensity of the ultraviolet rays is 2000 uW/cm;
(3) Adding the solution obtained in the step (2) into the ammonium polyphosphate, the p-nitrobenzoic acid, the oxidized polyethylene wax, the nano titanium dioxide, the stearic acid monoglyceride and the polyvinyl butyral with the formula amount, and stirring for 20-30 min at the temperature of 25-30 ℃, wherein the rotating speed is 600-800 r/min;
(4) adding the solution obtained in the step (3) into the antistatic master batch with the formula amount, stirring for 5-10min at 80-90 ℃ by using a high-speed disperser, wherein the rotating speed is 1500-2000r/min, standing for 30-35min, adding melamine resin, stirring for 5-10min at 60-80 ℃, wherein the rotating speed is 2000-3000r/min, cooling to 25-30 ℃, and standing for 5-10 min;
(5) adding the solution obtained in the step (4) into a reaction kettle, adding benzotriazole and nylon fiber in the formula amount, controlling the temperature in the reaction kettle to be 120-160 ℃, and the pressure to be 10-12Mpa for reaction for 20-40min, and uniformly stirring the whole solution in the process;
(6) Adding the solution obtained in the step (5) into a colloid mill, adding the methacrylic acid with the formula amount, controlling the colloid mill to work for 30-50min, and enabling the processed material to generate downward spiral impact force by the self weight or pump pressurization, and enabling the material to be effectively emulsified, dispersed, homogenized and crushed under the physical actions of strong shearing force, friction force, high-frequency vibration, high-speed vortex and the like when passing through the gap between the fixed teeth and the rotating teeth so as to achieve the effect of superfine emulsification of the material;
(7) And (3) adding the solution obtained in the step (6) into a film blowing machine, heating the solution by a heating device in the film blowing machine, removing impurities from the molten plastic through a filter screen of a machine head, discharging the molten plastic from a die head die orifice, performing inflation and air ring cooling, pressing by a herringbone plate, finally performing engraving by an anilox roller, processing an anilox on the inner surface of the film, and finally reeling by a traction roller to roll the finished film into a cylinder.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022209289A1 (en) * | 2021-03-29 | 2022-10-06 | デンカ株式会社 | Artificial hair fibers |
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Application publication date: 20191217 |