High performance composite materials play an important role in life
作者：管理员 时间：2020-06-19 15:51 来源：未知
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Composite material refers to the material with new properties composed of two or more materials with different properties through physical or chemical methods on the macro (micro) level. All kinds of materials learn from each other and produce synergistic effect, so that the composite material has better comprehensive performance than the original composition material and satisfies various different requirements. The matrix materials of composites are divided into metal and non-metal. Aluminum, magnesium, copper, titanium and their alloys are commonly used in metal substrates. The nonmetallic matrix mainly includes synthetic resin, rubber, ceramics, graphite, carbon and so on. Reinforced materials mainly include glass fiber, carbon fiber, boron fiber, arthron fiber, silicon carbide fiber, asbestos fiber, whisker, metal wire and hard fine grain.
Composite materials because of their excellent comprehensive performance, especially the performance of the design can be widely used in aerospace, defense, chat, sports and other fields, nanocomposite is one of the most attractive part of this year to the development of fast, the development strategy for the new material in the developed countries put the development of nanocomposites in important position.
Nanofiber masks include nanofiber composite technology in the production process, which is innovative in the following aspects: 1. In the process of preparing polymer raw materials into nanofiber, control of solution concentration, voltage, solution extrusion speed and other parameters in the electrostatic spinning process; 2. 2. Preparation technology of composite structures between different nanofiber layers and between nanofiber layers and melt-spraying non-woven fabrics; 3. Temperature and time control of bonding process between nano-fiber layer and melt-spraying non-woven cloth. It makes the fibers finer, more filterable, more breathable.
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The nano fiber mask USES pure physical filtration, its oil rate and filtration can reach more than 99%, the permeability is less than 150. Long-term storage efficiency will not be reduced, and it is safe and reliable. It is a three-layer structure POLYtetrafluoroethylene nanofiltration material obtained by the combination of nanometer microporous film and upper and lower two layers of non-woven cloth. Compared with the common two-layer structure filter material, it has lower resistance, higher efficiency, and less risk of damage during post-processing and use, which has obvious advantages.
