The invention discloses a hydrophobic additive based on
silane modified
zinc oxide as well as a preparation method and application of the hydrophobic additive. According to the additive,
zinc oxide whiskers with a three-dimensional
tetrapod-like structure are used as a matrix, and
tetraethyl orthosilicate and hexadecyl trimethoxy
silane are subjected to hydrolytic
polymerization on the surface of the matrix to form a super-hydrophobic structure. The hydrophobic additive is simply mixed with traditional explosion suppression
powder (such as
sodium bicarbonate) which is easy to absorb
moisture in proportion, so that the hydrophobicity and the anti-blocking capability of the composite
powder can be remarkably improved. The process is simple, safe and
environmentally friendly, the key problem that the performance of the explosion suppressant is degraded in a high-
humidity environment is effectively solved, and a novel efficient material is provided for industrial
dust explosion protection.