Graphite electrodes, ferrites, carbon nanotubes, and direct neutral carbon electrodes can all be used as high-temperature materials to prepare high-molecular compounds. Environmental protection refers to the environmental protection of lead-containing pen steel, or lead plate and wooden materials, and is more high-end than large pencils, pens, computer pens, etc. in terms of material development and preparation technology.
plastic, aluminum, glass
Ferrites are fine for high-temperature plastics, which are the most popular.
In addition to combustibles and combustibles, there are also some non-flammable substances, such as certain cheap water-soluble salts, and some difficult-to-melt materials, such as mixtures of metals and fluxes. Oxidation treatment, there are oxidation treatment agents, and spraying. Machining can be heat treated () or prepared by non-electrical processing () (personal feeling can be equivalent to multiple ferrite processing).
Ferrite includes solid phase ferrite, oxide ferrite, trivalent ferrite, fluorescent ferrite, matrix ferrite, divalent ferrite, etc., and the high-temperature performance is better than that of divalent ferrite. And trivalent ferrite, the preparation method of nano-microporous structure is not only Teflon and low-level three-dimensional printing but also the metal casting method of titanium-based metals as the titanium-magnesium metal matrix can be prepared nano-microporous hole structure. The high-temperature stability of ferrite can be solved by polymer stabilizers, mainly Al and Mn, such as nanosphere structure stabilizers commonly used in China, or acid + bridge pine resin or low-grade surfactants can be used as general structure stabilizers.
The stabilizer must be compatible with the matrix material, and even if the stabilizer is better, it may not be compatible with other microporous structure materials. It is difficult to stabilize the stabilizer alone, so it is necessary to use phosphoric acid as a catalyst. In the synthesis reaction of stabilizer degradation, phosphoric acid is used. Ferrite is a large melt with many parts with high boiling points, so it is recommended to use a catalyst. Teflon and inorganic low-carbon polymers are easy to burn. They can be cleaned with smoke and polymer curing agent in advance, and try to avoid reaction with hydrofluoric acid.
Teflon and polytetrafluoroethylene are easy to process, but they are relatively brittle. To prevent combustion, they can be replaced by inorganic high-carbon polymers, but because they are flammable solutions, make sure they will not burn people. Stabilizers can be trichloroethylene compounds and polyethylene oxides, both of which are difficult to degrade, and it is generally not easy to cause problems to replace them with general substrates. Some small stabilizers with luster and color, such as trichloroethylene phosphate tetra ammonium methyl yellow ester, etc., can be prepared by the sulfuric acid transfer method. Now some stabilizers do not add antioxidants, such as using paraffin instead of trichloroethylene phosphoric acid. OK.
Fluorocarbons can also be burned, such as the preparation of calcium ferric fluorophosphate (sulfate tetra ammine tetra cyanide alloy) with hydrochloric acid or the oxidation of ferric phosphate with hydrofluoric acid. The preparation of various substrates is very mature. Of course, it can also be prepared by the above-mentioned polymers and stabilizers with poor conductivity. You can find a suitable method by trying more. Several commonly used methods for preparing materials include silicon carbide modification (two-phase, phase-deficiency, double bond), mutual conversion of manganese carbide and ferrite (double bond and f), and preparation of high nanometer and microporous structures. If you can't find a good substrate, you can use resin instead, especially low-priced resin. The cheap one has 2-3g of acrylic resin per kilogram, and the expensive one has a high price.