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Ceramic-impregnated fabrics : ウィキペディア英語版 | Ceramic-impregnated fabrics
Ceramic-impregnated fabrics is a fabric that has been impregnated with ceramic. Nanometric bioceramic can be incorporated into the polymer from which the fabric is manufactured. Bioceramic nanoparticles are added to the fused polymer.Some types of ceramics show thermally-induced photoluminescence, emitting light in the far infrared (FIR) region of the electromagnetic spectrum.When in contact with the body heat, the thermoluminescence of the fabrics with embedded bioceramic is enhanced. Bioceramics presents high reflection coefficient for the infrared radiation. ==Method of production==
One way in which fabrics can be impregnated with ceramic is the process of electrophoretic deposition or EPD in the industry. In this process nano ceramic particles are put into a solution which the fabric to be infiltrated will be placed in. The solution is then heated to high temperatures and then the fabric is placed into the solution. Next a current is passed through and the nano ceramic particles coat and impregnate the fabric. The pH level as well as the amount of time and amount of current can change the effects of how well the fabric is infiltrated and how it is coated. Other processing methods can be further broken down into what particles will be added. There are two distinct groups. The first is the SiC group which contains silicon, carbon as well as additives for oxidation processes. When it comes to using this group for the purpose of ceramic-impregnation the textile must first go under a treatment. This is usually pyrolytic carbon or BN which is deposited using a chemical vapor infiltration or CVI. Next an overlayer of SiC is deposited on the textile using the same method. After this step the matrix of the textile is infiltrated by a slurry made up of SiC particles which can be put in a polymer or they can simply be just molten SiC. This process coats the entirety of the textile. The other group is the oxide group. Oxides commonly used are alumina, silica, mullite, and rare-earth phosphates. The process for impregnation is quite simple. A slurry is prepared with the oxide desired and the textile is placed in it. Again the slurry can be a molten state or a polymer based one. There are a few differences between these groups however. The SiC group has over twice the fracture strength and thermal conductivity when compared to the Oxides group. However the oxides are more stable in combustion and oxidizing environments. The process by which the textile is impregnated depends on what materials will be used, as well as the intended purpose of that fabric.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Ceramic-impregnated fabrics」の詳細全文を読む
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