Thermal Stability

KISCO offers various types of diX coating with a wide range of thermal stability, with some variants able to withstand environments at temperatures greater than 200ºC for over 3,000 hours. Parylene SR and HR properties make them ideal protective coatings for high temperature applications. Not only do these coatings perform well at high temperatures, but KISCO’s diX parylene coatings also display robust flexibility under extremely low temperatures, surviving flexibility tests even after being submerged in liquid nitrogen.

High Grade Heat Resistant Coating

Long term thermal durability based on physical property testing:

diX C film has 200 hour durability at 130ºC, diX HR film has 1,500 hour and diX SR film has 2,000 hour before the tensile strength of the coating drops below 50%. Furthermore, in the first few hours of heating these diX films, the polymer films recrystalize, increasing their tensile strength.

C,SR,HR Tensile Thermal Strength3

 

Long term thermal durability based on electrical property testing:

diX C film has 500 hour durability at 130ºC, diX HR and SR films have over 20,000 hour durability before the dielectric strength of the coating drops below 50%. Furthermore, diX HR tolerates 5 hours and diX SR tolerates 10 hours of thermal testing at 200ºC before the dielectric strength drops by 50%.

C,SR,HR Dielectric Thermal Strength3

Also, diX HR and SR film are lead-free, high-temperature, reflow compatible, which more common parylene N and C films cannot withstand. This makes it possible to protect Pb-free solder automotive parts and printed circuit boards used in mission critical products, such as military aircraft, which are exposed to harsh environments.

High Temp Reflow Process

Ultra High Grade Heat Resistant

High thermal stability grade: After 3000 hours under 200⁰C, KISCO’s diX SF dielectricity characteristics remain unchanged. It can withstand more than 2000 hours in a 250⁰C operating environment.

SF Dielectric Thermal Strength

Thermal Properties (PDF)