The electrospinning device can be used to prepare ultrafine fibers with diameters of 20-1000 nm. Nanofibers have very high specific surface area, ultra-fine diameter, and great porosity. More than 100 kinds of polymers can be prepared by this equipment. For example, PEO, DNA, PAA, PLA, protein, collagen, etc. also include a series of organic compounds such as nylon, polyester, acrylic, PVA, PS, Pan, peptide, cellulose, etc. The roller head of electrospinning is usually small, usually 100 * 100 mm or smaller. The small roller with induction heating can provide effective and reliable heat source for electrospinning production.
Application of electrospinning fiber with industion heating roller
Electrospinning is a special form of polymer fluid electrostatic atomization. At this time, the material separated from the atomization is not a small droplet, but a polymer micro jet, which can run for a long distance and finally solidify into fibers.
Electrospinning is a special fiber manufacturing process, in which polymer solution or melt is jet spun in a strong electric field. Under the action of electric field, the droplet at the tip of the needle changes from spherical to conical (i.e. "Taylor cone") and extends from the tip of the cone to obtain the filament. Polymer filaments with nanometer diameter can be produced in this way.
Electrospinning has become one of the main ways to effectively prepare nanofiber materials. It has many advantages: simple manufacturing device, low spinning cost, various kinds of spinnable materials and controllable process, etc. A wide variety of nanofibers, including organic, organic / inorganic composite and inorganic nanofibers, have been produced with electrospinning technology. However, there are still some problems in electrospinning. Firstly, in the preparation of organic nanofibers, the varieties of natural polymers used in electrospinning are still very limited, and the study about the structure and properties of the products are not perfect, and the application of the final products is only in the experimental stage, especially in the industrialization of these products, there are still big problems. Secondly, the properties of electrospun organic / inorganic composite nanofibers are not only related to the structure of nanoparticles, but also to the aggregation mode and synergistic properties of nanoparticles, the structural properties of polymer matrix, the interfacial structural properties between particles and matrix, and the processing technology. lastly, the research of electrospun inorganic nanofibers is basically in the initial stage. Inorganic nanofibers have potential applications in high-temperature filtration, efficient catalysis, biological tissue engineering, optoelectronic devices, aerospace equipment and other fields. However, the large brittleness of electrospun inorganic nanofibers limits its application performance and scope. Therefore, it is important to develop flexible and continuous inorganic nanofibers fiber.
Electrospinning is widely used in biomedical field, gas filtration, liquid filtration and personal protection, energy, optoelectronics, food engineering and other fields.
2. Defacts of current technology:
In order to meet the requirements of orientation and setting of fiber molecular chain, different processing temperature will be used for drawing fine thread. It is difficult to achieve the accuracy of temperature and the timely response of temperature control by using conventional heating method for small guide wheel applied in electrospinning. There will be problems of inaccurate temperature control and serious delay.
The problem of temperature stability in electrospinning can be solved by using induction heating roller. It provides effective guarantee for high-precision fine fiber production.
4. Product parameters：
roller surface coating
heating power capacity