The micro-Silicon fume, sometimes called “Silicon smoke”, or simply known as SiO2, is produced by special trapping devices that capture and treat the smoke and dust from the industrial process of melting industrial silicon and ferrosilicon at high temperatures using an industrial electric furnace. Silicon fume is a mixture of smoke and dust that contains SiO2. The particle sizes are small with an average of almost one nanometer.
Silicon powder’s performance and usefulness
Finely processing silicon dioxide (SiO2) is done through crushing, grinding and grading. Also known as quartz, this process results in the production of Silicon Powder. It is very pure, has a white colour, and has a good distribution of particles. You can use it for many purposes, and has some unique properties.
1.Silicon powder performances
(1) Silicon powder provides good insulation. Because of its purity and low impurity levels, good electrical insulation performance and good performance, it is arc resistant and has excellent insulation.
(2) Silicon powder is able to reduce epoxy resin’s exothermic peak temperature, decrease the linear expansion coefficient of the cure product and shrinkage rate. It also helps prevent cracking.
(3) Silicon powder can resist corrosion. Silicon powder doesn’t react well with many acids or alkalis, and it isn’t easy to combine with other substances. They are uniformly distributed on the surface and strong resistant to corrosion.
(4) It’s possible to have silicon particles sorted in an orderly manner. This will reduce or eliminate the possibility of precipitation and/or delamination occurring during product use. Use flame retardant products.
The silane coupling agents are able to wettably treat Silicon powder with different resins. They also have good adsorption properties, low adsorption, no agglomeration, and easy mixing.
The filler is then added to the organic material. It improves both the performance and reduces costs.
Silicon powder preparation
Many methods can be used to prepare silicon powder from silicon blocks. There are many methods to prepare silicon powder using silicon blocks as raw materials. The Raymond method is one of the most effective and efficient. Equipment used include the Raymond method (or roller mill), disc mill (or a vertical or horizontal mill), as well as punching and turning. These three types of milling refer to extrusion, while the last two use impact crushing. Each has its particular characteristics and offers its benefits and drawbacks.
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