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 that escapes from the industrial furnace for the smelting of industrial silicon and ferrosilicon. 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, purifying grinding, grading and any other process. Also known as quartz, it can also be called 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, as well as excellent stability, it is extremely durable.
(2) Silicon powder is able to reduce epoxy resin’s exothermic peak temperature, decrease the linear expansion coefficient of the cure product, and prevent cracking.
(3) Silicon powder can resist corrosion. Silicon powder doesn’t react well with many acids and alkalis, and it isn’t easy to combine with other substances. They are uniformly distributed on the object’s surface and exhibit strong corrosion resistance.
(4) It’s possible to grade silica powder particles. This will reduce or eliminate the possibility of precipitation and/or delamination. Increase flame retardant efficiency.
The silane coupling agents are able to wettably treat Silicon powder with different resins. They also have good adsorption properties, low agglomeration, and easy mixing.
The filler is then added to the organic material. It improves product performance and reduces product 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 (roller mill), disc mill (also known as a vertical or horizontal mill) and punching and turning method. 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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