Nanotechnology Application in Paper (3)
2018-05-25 09:00:19
2. Antibacterial nano-paper
Many organic antibacterial agents have the disadvantages of poor heat resistance, high volatility, easy decomposition and generation of harmful substances, and poor safety performance. For this reason, people actively develop and research inorganic antibacterial agents, and the use of ultra-fine technology to produce submicron and nanoscale inorganic antibacterial agents, can be a good solution to the shortcomings of organic antibacterial agents. Nano-scale inorganic antimicrobial agents include elements, oxides, and a variety of compounds. The inorganic inorganic antibacterial agent is mixed into the paper pulp and the surface sizing liquid to industrialize the antibacterial of the paper, such as physical antibacterial composite fiber non-woven fabrics, medical food packaging papers, senior household papers, and the like. Inorganic antibacterial agents mainly include silver, copper, zinc, sulfur, arsenic and their ionic elements. Photocatalytic antibacterial agents are nano-sized titanium oxide, zinc oxide, silicon oxide, etc. They can kill and eliminate bacteria and debris together, so that they can only kill bacteria's performance beyond traditional antibacterial agents. At the same time, the toxins secreted by the bacteria can also be decomposed, and traditional antibacterial agents cannot eliminate the bacterial remains and toxins. MOD series nano high-performance inorganic antibacterial agent solves the worldwide problem of discoloration of inorganic antibacterial agents in applications. With 0.5-2% added amount of packaging products, its antibacterial rate can reach 99.9%. It is currently used in milk, beverage antibacterial packaging, Plastic products, functional coatings and special paper.
3. Wear-resistant, antistatic nano paper
In diversified industrial product packaging, especially high-precision instrument appliances, stainless steel materials with high finish requirements, and various alloy material packaging liners, not only require that the packaging paper be waterproof, oil-proof, and rust-proof, but also required With high strength, abrasion resistance, anti-static, anti-aging characteristics, and ordinary paper are difficult to have these characteristics. However, this special paper made by infiltrating 0.1-0.3% of nano-titanium dioxide, chromic oxide, zinc oxide, iron oxide, tin dioxide, etc. into the papermaking slurry can have excellent properties. Wear, water resistance, corrosion resistance and other effects, but it will also produce a good electrostatic shielding performance, greatly reducing its electrostatic effects, which can greatly improve the safety factor of packaging products.
4. Stained nanopaper
Colorants for paper coloring can be divided into two major categories of dyes and pigments. Most of the dyeing pigments are natural inorganic pigments, and some are organically synthesized. Pigments are insoluble in water, have no affinity with fibers, and have dyeing properties that are not as good as dyes. However, pigments have strong resistance to optical rotation and are resistant to acid, alkali and other chemical agents. Although dyes are easy to be colored, they are easily hydrolyzed, have a large loss in the wet part, are highly polluting, have poor color fastness to paper, and are not resistant to acids, alkalis, and other chemical agents. If nano-scale pigments are used, the color fastness of colored paper can be solved. Recent studies have found that adding titanium dioxide, chrome yellow, iron oxide red, and other powders to chemical fibers can shield the ultraviolet radiation from overexposure. Using a computer simulation design, it was found that when the titanium dioxide particles have a particle size of 50 to 120 nanometers, the effect of absorbing ultraviolet rays is best. Adding the masking powder particles of this particle size range to the fiber can produce a light-resistant matte high white paper. And colorful colored paper, and can achieve anti-ultraviolet effect.
5. Inorganic fiber nano paper
The paper industry mainly uses plant fibers as raw materials and now also uses inorganic compounds to produce special papers. Since these inorganic materials have excellent dimensional stability, heat resistance, chemical resistance, flame retardancy, and electrical insulation due to the inorganic fibers produced by processing, these properties are beyond the reach of plant fibers. But the representative inorganic fiber--glass fiber, because it can't withstand beating, there is no bond between the glass fiber and the paper sheet is fragile, but if the glass fiber diameter is controlled below 100 nm, then To solve the phenomenon that the shrinkage of the glass filaments is small and the softness is poor, the paper is difficult to be formed, which is favorable for the intertwined formation of the fibers.
6. Colored flavored nano paper
With the development of science and technology, people's living standards have been continuously improved, and the quality requirements for paper have become higher and higher. Nowadays, various types of papers such as offset printing papers and writing papers of various flavors and colors have been developed and produced. This flavoring paper is not only soft and delicate, but also contains a hint of fragrance. The application of nanotechnology to the application of fragrant paper will greatly improve the quality and printability of fragrant paper, and the images of high-grade printed products will be more exquisite and realistic. Using colored fragrant paper for printed books, primary and secondary school textbooks, exercise books, notebooks, and various children's books, etc., people do not feel dazzling because of the high whiteness of the paper when reading, which can reduce long-term reading fatigue. , It has a certain effect on protecting eyesight and preventing myopia. Therefore, after the introduction of this flavoring paper, it was well received by the users.
7. Nano flame retardant paper
It is a paper that can prevent the burning of fire. For it, no matter how much firepower, it will not cause burning. It is the nemesis of any kind of fire. It can only scorch and carbonize, but it does not catch fire. After the paper is used, it can be treated as waste paper, and no harmful substances are released during natural degradation. Fire-retardant paper can generally be used for fireworks, fireworks, color fireworks, Christmas toys, and travel bedding. It is an ideal green product in today's holiday supplies (a variety of festive scenes, creating an indoor cheerful atmosphere, etc.). Some people even suggested using this kind of paper to make firefighters and other clothes that often deal with fire to prevent clothing from burning and to play a flame-retardant role. In addition, flame-retardant paper is applied to dry-type transformers, which is safe, non-toxic, flame-retardant, and radiation-resistant.
8. Magnetic Nano Paper
Magnetic paper can be recorded on a tape recorder like an audio tape, and it can also deliver sound. Magnetic paper is produced by containing a magnetic substance powder inside the paper or by attaching a magnetic substance powder to the surface of the paper. This paper is magnetized after magnetic treatment; this paper has its own magnetic properties. Magnetic, it can be directly attached to iron objects. Nanotechnology is applied to magnetic paper to make the quality of the paper better, and the magnetic effect is better and more lasting. Nowadays, this type of magnetic paper will have wider and more innovative uses in the areas of industrial and agricultural production, health care, national defense, scientific research, culture, education, health, and people's lives.
In addition, nanotechnology and materials also play a special role in the development of paper products, such as the development and research of high performance specialty paper products such as discoloration paper and energy storage paper. In addition, due to the excellent chemical activity of the nanomaterials, there is also a broad application prospect as a catalyst in papermaking chemicals and wastewater treatment. In addition to the application of nanotechnology on paper, there are many applications in the packaging and printing industry, such as nano-adhesives and sealants in packaging and printing, nano-magnetic materials, nano-substrate packaging materials, nano-catalysts, and water purifying agents. , nano-luminescent materials and security printing. In a nutshell, nanotechnology is a rapidly developing new technology in recent years. Its application in the printing industry will continue to grow in depth and breadth, just like other fields.
Many organic antibacterial agents have the disadvantages of poor heat resistance, high volatility, easy decomposition and generation of harmful substances, and poor safety performance. For this reason, people actively develop and research inorganic antibacterial agents, and the use of ultra-fine technology to produce submicron and nanoscale inorganic antibacterial agents, can be a good solution to the shortcomings of organic antibacterial agents. Nano-scale inorganic antimicrobial agents include elements, oxides, and a variety of compounds. The inorganic inorganic antibacterial agent is mixed into the paper pulp and the surface sizing liquid to industrialize the antibacterial of the paper, such as physical antibacterial composite fiber non-woven fabrics, medical food packaging papers, senior household papers, and the like. Inorganic antibacterial agents mainly include silver, copper, zinc, sulfur, arsenic and their ionic elements. Photocatalytic antibacterial agents are nano-sized titanium oxide, zinc oxide, silicon oxide, etc. They can kill and eliminate bacteria and debris together, so that they can only kill bacteria's performance beyond traditional antibacterial agents. At the same time, the toxins secreted by the bacteria can also be decomposed, and traditional antibacterial agents cannot eliminate the bacterial remains and toxins. MOD series nano high-performance inorganic antibacterial agent solves the worldwide problem of discoloration of inorganic antibacterial agents in applications. With 0.5-2% added amount of packaging products, its antibacterial rate can reach 99.9%. It is currently used in milk, beverage antibacterial packaging, Plastic products, functional coatings and special paper.
3. Wear-resistant, antistatic nano paper
In diversified industrial product packaging, especially high-precision instrument appliances, stainless steel materials with high finish requirements, and various alloy material packaging liners, not only require that the packaging paper be waterproof, oil-proof, and rust-proof, but also required With high strength, abrasion resistance, anti-static, anti-aging characteristics, and ordinary paper are difficult to have these characteristics. However, this special paper made by infiltrating 0.1-0.3% of nano-titanium dioxide, chromic oxide, zinc oxide, iron oxide, tin dioxide, etc. into the papermaking slurry can have excellent properties. Wear, water resistance, corrosion resistance and other effects, but it will also produce a good electrostatic shielding performance, greatly reducing its electrostatic effects, which can greatly improve the safety factor of packaging products.
4. Stained nanopaper
Colorants for paper coloring can be divided into two major categories of dyes and pigments. Most of the dyeing pigments are natural inorganic pigments, and some are organically synthesized. Pigments are insoluble in water, have no affinity with fibers, and have dyeing properties that are not as good as dyes. However, pigments have strong resistance to optical rotation and are resistant to acid, alkali and other chemical agents. Although dyes are easy to be colored, they are easily hydrolyzed, have a large loss in the wet part, are highly polluting, have poor color fastness to paper, and are not resistant to acids, alkalis, and other chemical agents. If nano-scale pigments are used, the color fastness of colored paper can be solved. Recent studies have found that adding titanium dioxide, chrome yellow, iron oxide red, and other powders to chemical fibers can shield the ultraviolet radiation from overexposure. Using a computer simulation design, it was found that when the titanium dioxide particles have a particle size of 50 to 120 nanometers, the effect of absorbing ultraviolet rays is best. Adding the masking powder particles of this particle size range to the fiber can produce a light-resistant matte high white paper. And colorful colored paper, and can achieve anti-ultraviolet effect.
5. Inorganic fiber nano paper
The paper industry mainly uses plant fibers as raw materials and now also uses inorganic compounds to produce special papers. Since these inorganic materials have excellent dimensional stability, heat resistance, chemical resistance, flame retardancy, and electrical insulation due to the inorganic fibers produced by processing, these properties are beyond the reach of plant fibers. But the representative inorganic fiber--glass fiber, because it can't withstand beating, there is no bond between the glass fiber and the paper sheet is fragile, but if the glass fiber diameter is controlled below 100 nm, then To solve the phenomenon that the shrinkage of the glass filaments is small and the softness is poor, the paper is difficult to be formed, which is favorable for the intertwined formation of the fibers.
6. Colored flavored nano paper
With the development of science and technology, people's living standards have been continuously improved, and the quality requirements for paper have become higher and higher. Nowadays, various types of papers such as offset printing papers and writing papers of various flavors and colors have been developed and produced. This flavoring paper is not only soft and delicate, but also contains a hint of fragrance. The application of nanotechnology to the application of fragrant paper will greatly improve the quality and printability of fragrant paper, and the images of high-grade printed products will be more exquisite and realistic. Using colored fragrant paper for printed books, primary and secondary school textbooks, exercise books, notebooks, and various children's books, etc., people do not feel dazzling because of the high whiteness of the paper when reading, which can reduce long-term reading fatigue. , It has a certain effect on protecting eyesight and preventing myopia. Therefore, after the introduction of this flavoring paper, it was well received by the users.
7. Nano flame retardant paper
It is a paper that can prevent the burning of fire. For it, no matter how much firepower, it will not cause burning. It is the nemesis of any kind of fire. It can only scorch and carbonize, but it does not catch fire. After the paper is used, it can be treated as waste paper, and no harmful substances are released during natural degradation. Fire-retardant paper can generally be used for fireworks, fireworks, color fireworks, Christmas toys, and travel bedding. It is an ideal green product in today's holiday supplies (a variety of festive scenes, creating an indoor cheerful atmosphere, etc.). Some people even suggested using this kind of paper to make firefighters and other clothes that often deal with fire to prevent clothing from burning and to play a flame-retardant role. In addition, flame-retardant paper is applied to dry-type transformers, which is safe, non-toxic, flame-retardant, and radiation-resistant.
8. Magnetic Nano Paper
Magnetic paper can be recorded on a tape recorder like an audio tape, and it can also deliver sound. Magnetic paper is produced by containing a magnetic substance powder inside the paper or by attaching a magnetic substance powder to the surface of the paper. This paper is magnetized after magnetic treatment; this paper has its own magnetic properties. Magnetic, it can be directly attached to iron objects. Nanotechnology is applied to magnetic paper to make the quality of the paper better, and the magnetic effect is better and more lasting. Nowadays, this type of magnetic paper will have wider and more innovative uses in the areas of industrial and agricultural production, health care, national defense, scientific research, culture, education, health, and people's lives.
In addition, nanotechnology and materials also play a special role in the development of paper products, such as the development and research of high performance specialty paper products such as discoloration paper and energy storage paper. In addition, due to the excellent chemical activity of the nanomaterials, there is also a broad application prospect as a catalyst in papermaking chemicals and wastewater treatment. In addition to the application of nanotechnology on paper, there are many applications in the packaging and printing industry, such as nano-adhesives and sealants in packaging and printing, nano-magnetic materials, nano-substrate packaging materials, nano-catalysts, and water purifying agents. , nano-luminescent materials and security printing. In a nutshell, nanotechnology is a rapidly developing new technology in recent years. Its application in the printing industry will continue to grow in depth and breadth, just like other fields.
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