Over molecular design was prepared having of reel a key, macromolecules obtained by the conductive, such as poly-pyrrole, polyphenylene sulfide, polyphenylene
Amine, etc. These resins because of their physical and mechanical properties, solubility in a solvent, the coating application performance can not meet the
Requirements, and so it has not been widely used. While most other polymer synthetic resin (such as alkyd resin, acrylic
Acid resin, etc.) and the film is formed is an insulator, a volume resistivity in the 10952 cm or more, must be
Modified, i.e. Joined conductive material to reduce its volume resistivity was obtained in the conductive additive, which is
Anti-static coating, which is a mixture composed by a conductive filler material, an insulating resin, additives, solvents, etc., will
The coated I is formed on the polymer surface layer of the cured film using a conductive filler of conductive role antistatic efficiency
Fruit, wherein the synthetic resin is the main film-forming material, the electrically conductive filler is a secondary film-forming substance, solvent and additives and auxiliary
To help the film-forming material.
(1) of the conductive filler on the impact of the anti-static coating performance electrically conductive filler is an important component of anti-static coatings, guide
Electric type of the filler determines the conductive coating. Top conductive filler comprises a metal-based fillers (such as nickel, silver, copper
, Aluminum, etc.); carbon-based filler (carbon black, graphite); metal oxide-based filler material (tin oxide, zinc oxide, etc.) to
And composite filler (glass beads, copper powder and mica powder outer coating silver and carbon black outer coated nickel powder). Conductive filler
Content and particle size distribution of anti-static coating significantly affect the properties was found that the conductive filler must be
Contact or near infinite network chain and continuous electron transfer can be formed in the coating, the coating will play an anti-static
The role of electricity, therefore the amount of the conductive filler is very important. Determined in order to achieve the purpose of anti-static, conductive fill
Joined amount of material is necessary.
When the conductive filler volume fraction VVV conductive filler in contact with each other rarely, to form a chain structure a chance
Conductive filler to increase or decrease the coating resistivity; mutation decreased when Vc - Vc, resistivity,
Conductive filler in contact with each other to form an infinite network chain, the network chain like metal mesh throughout the polymer, forming a guide
Electrical channel; when Vc ^.: VC when the resistivity increases with the amount of conductive fillers little change, but the excessive amount of conductive filler
, Will also affect other properties of the coating.
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