1.Parylene F Dimer（Parylene VT-4）Basic Information

English Name: Parylene F Dimer
Other Names / Synonyms:
• F Dimer, Parylene F
• Parylene F
• Parylene VT-4
• 4,5,7,8,12,13,15,16-Octafluoro[2.2]paracyclophane
• 5,6,11,12,13,14,15,16-Octafluorotricyclo[8.2.2.2⁴,⁷]hexadeca-4,6,10,12,13,15-hexaene
CAS No.: 1785-64-4
Molecular Formula: C₁₆H₈F₈
Molecular Weight: 352.22

2. Physical & Chemical Properties

3. Parylene F Dimer Features & Advantages

Parylene F is a fluorinated parylene dimer designed for vapor-deposited thin-film coatings. Its high fluorine content provides unique performance advantages compared to other parylene types:

• Excellent Hydrophobicity
Highly resistant to moisture and chemicals, providing superior environmental protection in harsh conditions.

• High Dielectric Strength
Outstanding electrical insulation properties, ideal for protecting sensitive electronic components.

• High Thermal Stability
Maintains performance at elevated temperatures, suitable for high-temperature applications.

• Biocompatibility
Safe for use in medical devices and implantable applications.

• Low Surface Energy
Reduced adhesion tendency, beneficial in applications where anti-sticking or release performance is required.

4. Key Performance Highlights (Parylene F / Parylene VT-4)

Low dielectric constant combined with high thermal stability
Maintains β-hexagonal crystalline structure after fluorine aromatic substitution
Dielectric constant in the range of 2.05–2.35
Annealing treatment further improves dielectric performance
Suitable as an organic insulating layer for microelectronic integration

5. Parylene F Typical Applications

Медицинские приборы
Aerospace & Defense
Electronics & Microelectronics
LEDs
Automotive Electronics