☆ 防盐雾，防氧化，防潮湿三防性能良好

☆ 无固化热应力

☆ 不影响磁性能

☆ 近同行，对复杂形状适应性好

☆ 可填充微孔、缝隙

☆ 无针孔及“砂眼”等涂装缺陷

☆ 超薄、强绝缘涂层，5微米涂层即可满足上千伏电压冲击

☆ 微米级涂层厚度均匀可控

☆ 大大节省磁环绕线空间

☆ 可增加磁体强度，适用于钐钴等材料

Parylene良好的物理与电学性能与无应力的应用工艺相结合，使它可用于钕铁硼、铁氧体、钐钴等磁性材料的绝缘防护，特别是传统的材料不能满足特定要求的一些场合。

Steam deposition forms a pinhole free coating

The coating process is carried out under vacuum, which is called vapor deposition polymerization (VDP). As a coating technology, VDP provides reliable progressiveness, obviously due to other coating technologies such as brushing, dipping, spraying, etc. Its progressiveness mainly comes from the fact that it is a solid coating directly formed by gas monomer without an intermediate transition stage of liquid. Therefore, in traditional methods, the phenomenon of material accumulation caused by surface tension flowing from the edge to the lower groove does not occur. Parylene coating grows outward from the surface of the substrate to form a uniform thickness conformal coating. Many experiments have shown that this coating treatment also has no pinholes when the coating thickness is below 1 micron.

Stress free application

Parylene coating is spontaneously formed on components at room temperature, without the need for a temperature rise curing process, and without the need to apply temperatures above room temperature and more time to the substrate for film growth. Since this polymer is spontaneous and does not require a catalyst. Catalysts that promote polymerization are usually ions or ionic compounds, and after curing, some of them will remain in the coating. These residual substances can participate in charge transfer and to some extent affect the electrical properties of the coating. Due to the fact that Parylene coating is formed at room temperature, it can prevent stress problems mainly caused by thermal expansion due to differences in room temperature and curing temperature.

Good insulation performance

In addition to these inherent properties, Parylene based coatings have excellent electrical performance, with good power-saving performance – low dielectric loss and high dielectric strength. At the same time, they also have excellent mechanical properties, high mechanical strength and low friction coefficient. The combination of these two makes Parylene an insulation layer suitable for small wound damage components. The insulation paint of thin copper wire can be damaged during strict winding operations, especially for smaller circular and cylindrical devices that require a coating. It not only provides insulation but also eliminates damage to the wire caused by friction during winding. The high insulation strength and dry film lubrication performance of Parylene make it suitable for this application.

Increase the space of the winding window

When applying NYLON (nylon) or PTFE (polytetrafluoroethylene) coatings, the increase in the winding window space of these coatings reduces the anti friction effect due to the thin coating at the edges and corners caused by surface tension. The thin and uniform thickness of Parylene coating enables the winding device to maintain a relatively large winding window, and the accompanying large winding space makes it suitable for use as a coated product with good performance.

Coating for small components

Using a type of tape to insulate between the winding and metal components is a traditional process, but when the components are small, it is difficult to use tape. Using Parylene coating can eliminate defective components and improve their electrical performance. A good example is the use of small cylindrical magnetic cores as “PICK-UP” coils in some hearing aids.

Improve strength and corrosion resistance

近年来磁性材料的发展出现了烧结和粘结钕铁硼元件，它可制成很小的形状，使用Parylene涂敷工艺具有很突出的优越性。小型钕铁硼磁性器件是易碎的，添加Parylene涂层另一个优点是还可增加强度，钕铁硼材料对来自大气中的潮湿产生的腐蚀也是很敏感的，Parylene极低的水汽透过率还提供了良好的防潮抗腐蚀防护。