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Let me share with you some key features of insulating varnish (Fanli Shui) and its future development trends.
Let me tell you all about insulating varnish. All-in-One Water ) Some features used and their development directions

Insulating varnish (Fanli Shui) should be used according to the instructions.
1. The amount of water added should not exceed 25% of the coating's weight, based on the recommended addition rate from actual testing. Generally, the larger the motor, the higher the viscosity requirement for the paint.
2. The actual baking temperature should be above 120°C; the larger the motor and the more complex its structure, the longer the baking time will be. When the baking temperature is increased, the baking time can be slightly reduced. Conversely, lowering the baking temperature will extend the baking duration. Additionally, the vacuum drying oven needs to maintain its temperature for at least 4 hours.
3. When using PVC sleeves, prolonged baking time or excessively high temperatures may cause the sleeves to turn yellow or even black. However, their excellent flexibility ensures no compromise in insulation quality. We recommend using acrylic sleeves instead.
4. If you dip your hand into the paint, make sure to seal the paint container tightly afterward to prevent dust and other contaminants from entering. Also, regularly use a strainer to remove impurities from the paint, ensuring that they don’t compromise the appearance of the workpiece.
The future direction of insulating varnish (fanlisiu)
It has low viscosity, excellent flowability, and a high solid-phase water content, which facilitates the wetting and filling of impregnation materials. It dries and cures quickly, exhibits strong drying performance, and provides robust adhesion. Additionally, it demonstrates good thermal ductility and can effectively withstand the centrifugal forces generated during motor rotation after curing. This insulation varnish (Varnish) boasts outstanding electrical performance and organic chemical stability, offering exceptional resistance to water, high temperatures, and both acids and alkalis. Moreover, it exhibits excellent compatibility with conductive materials and other raw components. When formulating the varnish to the appropriate viscosity, care is taken to ensure optimal coil impregnation, enhancing both hydrophilicity and paint retention on the coils. In practice, the weight of the paint thinner can be adjusted based on the specific dimensions of the coil and the spacing between its windings. To evaluate the varnish’s performance, comprehensive tests were conducted, covering key parameters such as storage reliability, drying characteristics, and dielectric strength. Furthermore, the material’s molecular structure was analyzed qualitatively through infrared spectroscopy and thermogravimetric analysis, while its distribution and content were verified via dielectric loss factor measurements.
With the advancement of technology, home appliance products are evolving toward smaller and lighter designs, increased speed, larger spaces, analog systems, and smarter, more integrated functionalities. Moreover, as people’s indoor activity spaces expand—from deep-sea environments to outer space—home appliances are now being exposed to a wider variety of natural conditions, which in turn is driving the diversification of application standards for edge materials and the environmental demands they must meet.
Insulating varnish (fanlishui) suffers from drawbacks such as poor adhesion, weak bonding strength, slow drying, and brittleness. To address these issues, epoxy-modified silicone resins should feature a siloxane backbone, with polymer chains grafted onto their terminal and side groups containing epoxy units. Such materials should exhibit excellent heat resistance, water repellency, and edge durability. The self-made epoxy resin demonstrates superior thermal stability and abrasion resistance. Notably, when the modified silicone resin content reaches 70%, the resulting silicone material achieves a particularly high performance—though this comes at the cost of increased resin costs, higher baking temperatures, and potential challenges if the acrylic emulsion dosage is too high.
That's all for the introduction—thanks for watching! If you're in need of insulating paint (Fanli Shui), feel free to reach out to our manufacturer.
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