1. Why does hexagonal boron nitride not conduct electricity?

Hexagonal boron nitride does not contain ions and is a covalent compound that cannot conduct electricity like graphite. Graphite can conduct electricity because it uses sp2 hybrid mode and one free electron, and hexagonal boron nitride uses SP3 hybrid mode, which does not contain free electrons and is not an ion conductor.

2. What is the particle size of boron nitride?

The particle size refers to the mesh particle size, and the unit of measurement, the mesh particle size refers to the size of the raw material particles, which is generally expressed by the maximum length of the particles. The mesh is the size that indicates the mesh size of the standard sieve. In the Taylor standard sieve, the so-called mesh is the number of sieve holes in the length of 2.54 cm (1 inch), and is referred to as mesh for short.

3. What is the difference between boron nitride with different purity?

The difference in the purity of boron nitride is caused by the production process. The purity of low-temperature boron nitride is 95%~98%, and the purity of high-temperature boron nitride is more than 99%. In the industrial field, for example: synthetic diamond products, cubic nitride Low-temperature boron nitride can be used for boron tools and the like. Used in the field of cosmetics and fine electronics, such as lipstick, CPU cooling film, electric heating pipe filling, etc., need to use high temperature boron nitride, and these products also have extremely high requirements on the particle size of boron nitride.

4. What is the thermal conductivity of boron nitride?

Boron nitride is mainly divided into hexagonal boron nitride and cubic boron nitride. The thermal conductivity of hexagonal boron nitride is 56.94 watts/m degree, and the thermal conductivity of cubic boron nitride is 79.54w/m.k, second only to diamond (146.5 w/m.k).