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Parylene Type

Country/Region china
Company ZhangSheng NaNo Tech Company
Categories Parylene
ICP License Issued by the Chinese Ministry
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Parylene Type

Poly-para-xylylene Versions
There are three common forms of theParylene polymer:Parylene C, Parylene N, and Parylene D, each with uniqueproperties that suit it to particular insulation applications.
For example, Parylene N provides particularly high dielectric strength anda dielectric constant that is independent of frequency.Because of its highmolecular activity in the monomer state, Parylene N has the highest penetratingpower of the Parylenes, with the ability to coat deep recesses and blindholes.
Parylene N has a very low dissipation factor, a low dielectric constant,and is ideal for high frequency applications where the coating is in the directRF field.Unlike liquid coatings, the Parylene deposition process does not entrapair that can lead to high frequency corona problems.
Parylene C has a chlorine atom on the benzene ring, and this results inmodified electrical and physical properties including very low permeability tomoisture and corrosive gases.The Parylene C deposition rate is substantiallyfaster than that of Parylene N, resulting in reduced crevice penetrationability.
Parylene D, with two chlorine atoms on the benzene ring, has the highestdegree of thermal stability of the Parylenes and also possesses superiorphysical and electrical properties at high temperatures compared to Parylenes Cand N.
The bulk electrical properties of the Parylenes make them goodcandidates for electrical and electronic applications. Dielectric constants anddielectric losses are low and unaffected by absorption of moisture, and thepolymer's high purity, low moisture absorption and freedom from trace ionicimpurities yield high bulk resistivities.
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