The role of silicon powder in silicone tubes

Look at these dark powders, they are silicon powder. Silicon powder is also called micro-silica powder. The scientific name is silica fume. It is the process of industrial electric furnace in the process of melting silicon and ferrosilicon in high temperature. The soot emitted by the exhaust gas is collected and processed by special collecting device.

Silicon powder can be used in silicone tubes, but many people don't know what the role of silica powder is in silicone tubes. Let's take a look at it.

1. Silicon powder has good insulation, so it can increase the insulation and arc resistance of the silicone tube.

2. It can reduce the exothermic peak temperature of the epoxy resin curing reaction, reduce the linear expansion coefficient and shrinkage rate of the cured product, thereby eliminating the internal stress of the silicone tube and preventing the silicone tube from cracking.

3. Silicon micropowder is not easy to react with other substances, and it does not react with most acids and alkalis. Its particles evenly cover the surface of the object, so that the silicone tube has strong corrosion resistance.

4, the particle grading is reasonable, can reduce and eliminate the precipitation and stratification when used; can make the silicone tube tensile strength, compressive strength enhanced, wear resistance improved, and can increase the thermal conductivity of the silicone tube, increase flame retardant performance.

5. Silicon powder can reduce the heat generated during the rubber extrusion process, improve the thermal expansion coefficient of the product, and make the surface of the product smooth.

6. As a filler, silicon micropowder is added to the organic resin, which not only improves the performance of the silicone tube, but also reduces the product cost.