CN109866484B - Preparation method of sterilization electrothermal film with purification function - Google Patents
Preparation method of sterilization electrothermal film with purification function Download PDFInfo
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- CN109866484B CN109866484B CN201811631200.1A CN201811631200A CN109866484B CN 109866484 B CN109866484 B CN 109866484B CN 201811631200 A CN201811631200 A CN 201811631200A CN 109866484 B CN109866484 B CN 109866484B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a preparation method of a sterilizing electrothermal film with a purification function, wherein a quantitative nano-scale emerald material is selectively added into a heating material, water molecules in air are ionized through a thermoelectric effect and a piezoelectric effect, negative oxygen ions can be continuously released, the release speed and the release amount can be increased along with the rise of temperature, and the effects of removing formaldehyde, sterilizing and the like are achieved; in addition, the method has good processability, relatively simple process and good stability, and can play a role in releasing negative oxygen ions for a long time.
Description
Technical Field
The invention relates to the technical field of electric heating material preparation, in particular to a preparation method of a sterilization electric heating film with a purification function.
Background
The application of the electrothermal film has been in China for decades, and the electrothermal film is divided into a high-temperature electrothermal film and a low-temperature electrothermal film. The high-temperature film is mainly an mica film, is mainly applied to electric heaters, industrial heating products and the like, and is mainly applied to civil heating. The polymer electrothermal film is one of a plurality of electrothermal films, and the heating material of the polymer electrothermal film is a high-molecular electrothermal material in material property. Polymers are a substance structure form of a monomer structure substance such as metal, and plastics, synthetic rubbers, various paints, and the like are polymer materials. The polymer material has the characteristics of stable structure, good machinability, aging resistance, small attenuation, easy complex structure design, easy functional composition and the like, and the polymer electrothermal film is a technology for implanting the characteristics of the polymer material into the electrothermal material so as to overcome the defects of simple structure, single function, easy aging, short service life and the like of the electrothermal material. For example, chinese patent CN102932974B discloses a method for preparing a polymeric electrothermal film.
However, these polymer electric heat membrane on the existing market, the problem of heating is just solved alone, and the temperature is high after heating, and when it was used to indoor, can make indoor harmful substance accelerate to release, like formaldehyde etc. still can produce harm to the human body on the contrary.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a preparation method of an electrothermal film, which can release negative oxygen ions and generate 7-15 micron far infrared rays to purify air, sterilize and diminish inflammation and the like without influencing heating.
The purpose of the invention is realized by the following technical scheme:
a preparation method of a sterilization electrothermal film with a purification function comprises the following steps:
s1, preparing negative oxygen ion heating powder;
s2, preparing the negative oxygen ion heating glue agent;
s3, preparing a negative oxygen ion heating film;
s4, preparing a negative oxygen ion release film;
s5, coating the negative oxygen ion release film on the surface of the negative oxygen ion heating film at high temperature to form the sterilizing electric heating film.
Preferably, the step S1 specifically includes:
s11, sequentially selecting the following materials in percentage by weight:
10-30% of carbon powder, and the granularity is 300-500 meshes;
10-20% of graphene, and the granularity is 300-;
20-30% of brittle material with particle size of 3000 meshes;
1-2% of silver powder, and the granularity is 300-;
15-20% of magnesium oxide with the granularity of 300 meshes;
10-15% of zinc hydroxide with the granularity of 200 meshes;
10-20% of alumina with the granularity of 200 meshes;
the sum of the contents of all the components is 100 percent;
s12, sequentially adding the materials into a mixer-grinding all-in-one machine according to the selection sequence, mixing and grinding for 15-20 minutes at the rotation speed of 300-500rpm, and uniformly mixing to obtain the negative oxygen ion heating powder.
Preferably, the brittle material is a high-molecular material blend, and the concrete components comprise silicon oxide, aluminum oxide, iron oxide, titanium oxide, zinc oxide, copper oxide and sodium oxide, the brittle material is obtained by fusing in a high-temperature furnace at 1800-2100 ℃ for 36-60 hours according to the weight ratio of 1:1:1.2:1.5:1.5:1:0.8, after the brittle material is completely cooled to room temperature, the brittle material is placed in an ultrahigh-temperature furnace at 1000-1200 ℃ to remove impurities, then a crusher is used for crushing into 3-5 cm of broken stone, and the crushed brittle material is prepared under a positive-negative pressure superfine pulverizer.
Preferably, the step S2 specifically includes,
s21, taking the following materials in percentage by weight:
the dosage of the negative oxygen ion heating powder prepared in the step S1 is 10-30%;
25-35% of polytetrafluoroethylene solution with the concentration of 35-40%;
38-45% of polyimide solution with the concentration of 20-30%;
s22, adding the mixture into a liquid dispersion and grinding integrated machine for mixing and stirring, wherein the rotating speed is 700 and 1000rpm, and the time is 30-60 minutes, so as to prepare the negative oxygen ion heat generating glue.
Preferably, the step S3 specifically includes,
s31, uniformly coating the negative oxygen ion heating adhesive prepared in the step S2 on a base material in a dip coating, blade coating, roll coating or spraying mode, wherein the thickness of the coating is 0.05-0.08 mm;
s32, selecting baking temperature and baking time according to the base material, and curing and crosslinking to obtain the negative oxygen ion heating film.
Preferably, the base material is a temperature-resistant OPP plastic film, the baking temperature is 60-120 ℃, and the baking time is 6-10 hours.
Preferably, the substrate is glass fiber cloth, the baking temperature is 150-350 ℃, and the baking time is 1.5-2 hours.
Preferably, the step S4 specifically includes,
s41, taking the following materials in percentage by weight:
15-25% of brittle material with particle size of 3000 meshes;
55-65% of insulating clean coal micro powder with the granularity of 200 meshes and 300 meshes;
5-15% of magnesium oxide with the granularity of 300 meshes;
5-15% of alumina with the granularity of 200 meshes;
the sum of the contents of all the components is 100 percent;
s42, placing the materials in a mixing and grinding all-in-one machine, uniformly mixing at the rotation speed of 300-500rpm for 30-40 minutes to obtain negative oxygen ion release powder;
s43, taking the following materials in percentage by weight:
20-35% of the negative oxygen ion release powder prepared in the step S42;
25-35% of polytetrafluoroethylene solution with the concentration of 30-40%;
30-42% of polyimide solution with the concentration of 20-30%;
s44, adding the mixture into a liquid dispersion and grinding integrated machine for mixing and stirring at the rotation speed of 700 and 1000rpm for 30-60 minutes to prepare the negative oxygen ion release glue agent;
s45, coating the negative oxygen ion release glue agent prepared in the step S44 on glass fiber cloth in a blade coating mode, wherein the thickness of the coating is 0.05-0.08mm, baking for 0.5-1 hour at the temperature of 200-300 ℃, and curing and crosslinking to obtain the negative oxygen ion release film.
Preferably, the brittle material adopted in the negative oxygen ion release film is a high molecular material blend, and the concrete components comprise silicon oxide, aluminum oxide, ferric oxide, titanium oxide, zinc oxide, copper oxide and sodium oxide according to the weight ratio of 1:1:1.2:1.5:1.5:1:0.8, the brittle material is obtained by fusing in a high-temperature melting furnace at 1800-2100 ℃ for 36-60 hours, after the brittle material is completely cooled to room temperature, the brittle material is placed in an ultrahigh-temperature baking furnace at 1000-1200 ℃ to remove impurities, then the brittle material is crushed into 3-5 centimeters of broken stones by a crusher, and the crushed material is prepared by crushing in a positive-negative pressure superfine pulverizer.
Preferably, the step S5 specifically includes,
s51, selecting the negative oxygen ion heating film prepared in the step S3 and the negative oxygen ion releasing film prepared in the step S4;
s52, coating high-temperature glue between the two to obtain a composite film;
s53, placing the composite film into a high-temperature steel plate scraping type film laminating machine for high-temperature lamination, and laminating for 2 minutes at the laminating temperature of 200-300 ℃ to finally form the sterilizing electrothermal film.
The invention has the following beneficial effects: the heating material is added with a proper amount of specially-made brittle materials, and a corresponding coating process is adopted, so that the prepared electrothermal film can generate piezoelectric and ionization effects, release negative oxygen ions and generate infrared rays while heating is not influenced, and the effects of removing formaldehyde, sterilizing and the like are achieved; in addition, the method has good processability, relatively simple process and good stability, and can play a role in releasing negative oxygen ions for a long time.
Detailed Description
The following embodiments are not intended to limit the present invention, and structural, methodical, or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.
The invention discloses a preparation method of a sterilization electrothermal film with a purification function, which comprises the following steps:
s1, preparing negative oxygen ion heating powder;
s2, preparing the negative oxygen ion heating glue agent;
s3, preparing a negative oxygen ion heating film;
s4, preparing a negative oxygen ion release film;
s5, coating the negative oxygen ion release film on the surface of the negative oxygen ion heating film at high temperature to form the sterilizing electric heating film.
Specifically, the step S1 specifically includes:
s11, sequentially selecting the following materials in percentage by weight:
10-30% of carbon powder, and the granularity is 300-500 meshes;
10-20% of graphene, and the granularity is 300-;
20-30% of brittle material with particle size of 3000 meshes;
1-2% of silver powder, and the granularity is 300-;
15-20% of magnesium oxide with the granularity of 300 meshes;
10-15% of zinc hydroxide with the granularity of 200 meshes;
10-20% of alumina with the granularity of 200 meshes;
the sum of the contents of all the components is 100 percent;
s12, sequentially adding the materials into a mixer-grinding all-in-one machine according to the selection sequence, mixing and grinding for 15-20 minutes at the rotation speed of 300-500rpm, and uniformly mixing to obtain the negative oxygen ion heating powder.
In the heating powder, the carbon powder mainly plays a heating role, and the graphene and the silver powder belong to superconducting materials and play a conductive role; magnesium oxide, aluminum oxide and zinc hydroxide are mainly used for flame retardance. The brittle material is the key of the invention, compounds in the brittle material have non-centrosymmetric lattice characteristics, and the brittle material powder is prepared by high-temperature fusion and crushing according to a certain proportion. Under the conditions of temperature and voltage, the thermoelectric effect and the piezoelectric effect are generated, and the water H in the air is electrolyzed2And O, obtaining negative oxygen ions. And the carbon powder can generate heat under the condition of voltage, and the generated heat is provided for the brittle material, so that the effects of negative oxygen ion sterilization and air purification are realized. The negative oxygen ion heating powder obtained according to the proportion has the advantages of uniform heating effect, high electric heat conversion efficiency and very quick conduction, and can release negative oxygen ions for a long time.
In the heating powder, the brittle material is a high-molecular material concoction, and the specific components comprise silicon oxide, aluminum oxide, iron oxide, titanium oxide, zinc oxide, copper oxide and sodium oxide according to the weight ratio of 1:1:1.2:1.5:1.5:1:0.8, and some errors are allowed by the invention. Fusing the raw materials in a high-temperature melting furnace at 1800-2100 ℃ for 36-60 hours to obtain a brittle raw material, after the brittle raw material is completely cooled to room temperature, placing the brittle raw material in an ultrahigh-temperature oven at 1000-1200 ℃ to remove impurities, crushing the brittle raw material into 3-5 cm of broken stone by a crusher, and crushing the broken stone by a positive-negative pressure superfine pulverizer to obtain the brittle material.
The step S2 specifically includes:
s21, taking the following materials in percentage by weight:
the dosage of the negative oxygen ion heating powder prepared in the step S1 is 10-30%;
25-35% of polytetrafluoroethylene solution with the concentration of 35-40%;
38-45% of polyimide solution with the concentration of 20-30%;
s22, adding the mixture into a liquid dispersion and grinding integrated machine for mixing and stirring, wherein the rotating speed is 700 and 1000rpm, and the time is 30-60 minutes, so as to prepare the negative oxygen ion heat generating glue.
In the heating adhesive, the polytetrafluoroethylene solution is used for dilution, so that the mixing and dispersion are more uniform. The polyimide solution functions to achieve a crosslinking effect.
The step S3 specifically includes:
s31, uniformly coating the negative oxygen ion heating adhesive prepared in the step S2 on a base material in a dip coating, blade coating, roll coating or spraying mode, wherein the thickness of the coating is 0.05-0.08 mm;
s32, selecting baking temperature and baking time according to the base material, and curing and crosslinking to obtain the negative oxygen ion heating film.
Specifically, the base material can be a temperature-resistant OPP plastic film or glass fiber cloth, and when the base material is the temperature-resistant OPP plastic film, the baking temperature is 60-120 ℃, and the baking time is 6-10 hours. When the base material is glass fiber cloth, the baking temperature is 150-350 ℃, and the baking time is 1.5-2 hours.
In step S3, the negative oxygen ion heat generating adhesive prepared in step S2 is coated in different ways according to different materials by means of dip coating, blade coating, roll coating or spray coating (both are conventional coating processes), but is necessarily uniformly coated on a substrate and baked, and is cured and crosslinked at different temperatures according to different substrates.
The step S4 specifically includes:
s41, taking the following materials in percentage by weight:
15-25% of brittle material with particle size of 3000 meshes;
55-65% of insulating clean coal micro powder with the granularity of 200 meshes and 300 meshes;
5-15% of magnesium oxide with the granularity of 300 meshes;
5-15% of alumina with the granularity of 200 meshes;
the sum of the contents of all the components is 100 percent;
s42, placing the materials in a mixing and grinding all-in-one machine, uniformly mixing at the rotation speed of 300-500rpm for 30-40 minutes to obtain negative oxygen ion release powder;
s43, taking the following materials in percentage by weight:
20-35% of the negative oxygen ion release powder prepared in the step S42;
25-35% of polytetrafluoroethylene solution with the concentration of 30-40%;
30-42% of polyimide solution with the concentration of 20-30%;
s44, adding the mixture into a liquid dispersion and grinding integrated machine for mixing and stirring at the rotation speed of 700 and 1000rpm for 30-60 minutes to prepare the negative oxygen ion release glue agent;
s45, coating the negative oxygen ion release glue agent prepared in the step S44 on glass fiber cloth in a blade coating mode, wherein the thickness of the coating is 0.05-0.08mm, baking for 0.5-1 hour at the temperature of 200-300 ℃, and curing and crosslinking to obtain the negative oxygen ion release film.
The brittle material in the step can be the brittle material in the preparation of the negative oxygen ion heating film, so that the production steps are reduced.
The step S5 specifically includes the steps of,
s51, selecting the negative oxygen ion heating film prepared in the step S3 and the negative oxygen ion releasing film prepared in the step S4;
s52, coating high-temperature glue between the two to obtain a composite film;
s53, placing the composite film into a high-temperature steel plate scraping type film laminating machine for high-temperature lamination, and laminating for 2 minutes at the laminating temperature of 200-300 ℃ to finally form the sterilizing electrothermal film.
The bactericidal electrothermal film prepared by the method has negative oxygen ion release and bacteriostatic effects, and the bactericidal electrothermal film is obtained after testing:
per cubic centimeter, the generation amount of negative ions is 1060,
the bacteriostasis rate of the escherichia coli (8099) is more than 99 percent,
the bacteriostatic rate of staphylococcus aureus (ATCC 6538) is more than 99 percent,
the bacteriostasis rate of the candida albicans (ATCC 10231) is more than 99 percent,
the bacteriostasis rate of the Klebsiella pneumoniae (ATCC 4352) is more than 99 percent.
The sterilizing electrothermal film prepared by the method can be applied in the following range:
1) application to building heating;
2) can be used as heating elements of civil heating devices, such as electric heaters, electric heating fresco and the like;
3) the method is applied to heating or heat preservation of industrial products;
4) can be applied to heating and heat preservation in the agricultural field;
5) can be used for developing biological medicines or health products;
6) development and utilization of military heating products.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (7)
1. The preparation method of the sterilizing electrothermal film with the purification function is characterized in that: the method comprises the following steps:
s1, preparing negative oxygen ion heating powder;
s2, preparing the negative oxygen ion heating glue agent;
s3, preparing a negative oxygen ion heating film;
s4, preparing a negative oxygen ion release film;
s5, coating the negative oxygen ion release film on the surface of the negative oxygen ion heating film at high temperature to form a sterilizing electric heating film;
the step S4 specifically includes the steps of,
s41, taking the following materials in percentage by weight:
15-25% of brittle material with particle size of 3000 meshes;
55-65% of insulating clean coal micro powder with the granularity of 200 meshes and 300 meshes;
5-15% of magnesium oxide with the granularity of 300 meshes;
5-15% of alumina with the granularity of 200 meshes;
the sum of the contents of all the components is 100 percent;
s42, placing the materials in a mixing and grinding all-in-one machine, uniformly mixing at the rotation speed of 300-500rpm for 30-40 minutes to obtain negative oxygen ion release powder;
s43, taking the following materials in percentage by weight:
20-35% of the negative oxygen ion release powder prepared in the step S42;
25-35% of polytetrafluoroethylene solution with the concentration of 30-40%;
30-42% of polyimide solution with the concentration of 20-30%;
s44, adding the mixture into a liquid dispersion and grinding integrated machine for mixing and stirring at the rotation speed of 700 and 1000rpm for 30-60 minutes to prepare the negative oxygen ion release glue agent;
s45, coating the negative oxygen ion release adhesive prepared in the step S44 on glass fiber cloth in a blade coating mode, wherein the thickness of the coating is 0.05-0.08mm, baking the glass fiber cloth at the temperature of 200-300 ℃ for 0.5-1 hour, and curing and crosslinking to prepare a negative oxygen ion release film;
the brittle material is a high-molecular material blend, and comprises silicon oxide, aluminum oxide, iron oxide, titanium oxide, zinc oxide, copper oxide and sodium oxide, wherein the silicon oxide, the aluminum oxide, the iron oxide, the titanium oxide, the zinc oxide, the copper oxide and the sodium oxide are fused in a high-temperature melting furnace at 1800-2100 ℃ for 36-60 hours according to the weight ratio of 1:1:1.2:1.5:1.5: 0.8 to obtain a brittle raw material, the brittle raw material is placed in an ultrahigh-temperature baking furnace at 1000-1200 ℃ to remove impurities after being completely cooled to room temperature, then a crusher is used for crushing the brittle raw material into 3-5 cm of broken stone, and the crushed brittle material is prepared by crushing the crushed stone under a positive-negative pressure superfine pulverizer.
2. The method of claim 1, wherein: the step S1 specifically includes the steps of,
s11, sequentially selecting the following materials in percentage by weight:
10-30% of carbon powder, and the granularity is 300-500 meshes;
10-20% of graphene, and the granularity is 300-;
20-30% of brittle material with particle size of 3000 meshes;
1-2% of silver powder, and the granularity is 300-;
15-20% of magnesium oxide with the granularity of 300 meshes;
10-15% of zinc hydroxide with the granularity of 200 meshes;
10-20% of alumina with the granularity of 200 meshes;
the sum of the contents of all the components is 100 percent;
s12, sequentially adding the materials into a mixer-grinding all-in-one machine according to the selection sequence, mixing and grinding for 15-20 minutes at the rotation speed of 300-500rpm, and uniformly mixing to obtain the negative oxygen ion heating powder.
3. The method of claim 1, wherein: the step S2 specifically includes the steps of,
s21, taking the following materials in percentage by weight:
the dosage of the negative oxygen ion heating powder prepared in the step S1 is 10-30%;
25-35% of polytetrafluoroethylene solution with the concentration of 35-40%;
38-45% of polyimide solution with the concentration of 20-30%;
s22, adding the mixture into a liquid dispersion and grinding integrated machine for mixing and stirring, wherein the rotating speed is 700 and 1000rpm, and the time is 30-60 minutes, so as to prepare the negative oxygen ion heat generating glue.
4. The method of claim 1, wherein: the step S3 specifically includes the steps of,
s31, uniformly coating the negative oxygen ion heating adhesive prepared in the step S2 on a base material in a dip coating, blade coating, roll coating or spraying mode, wherein the thickness of the coating is 0.05-0.08 mm;
s32, selecting baking temperature and baking time according to the base material, and curing and crosslinking to obtain the negative oxygen ion heating film.
5. The method of claim 4, wherein: the base material is a temperature-resistant OPP plastic film, the baking temperature is 60-120 ℃, and the baking time is 6-10 hours.
6. The method of claim 5, wherein: the base material is glass fiber cloth, the baking temperature is 150-350 ℃, and the baking time is 1.5-2 hours.
7. The method of claim 1, wherein: the step S5 specifically includes the steps of,
s51, selecting the negative oxygen ion heating film prepared in the step S3 and the negative oxygen ion releasing film prepared in the step S4;
s52, coating high-temperature glue between the two to obtain a composite film;
s53, placing the composite film into a high-temperature steel plate scraping type film laminating machine for high-temperature lamination, and laminating for 2 minutes at the laminating temperature of 200-300 ℃ to finally form the sterilizing electrothermal film.
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