Made in China to Replace 3M novac 1700 Electronic Coating Agent for Protecting Crystal Chip Packaging PCB Board Fluorination Liquid

Product Name: Hemiao HM-1 700 Fluorine Electronic Protection Nano Coating Agent（Equivalent substitution 3M novac 1700）

Product Introduction

This product is a liquid with ultra-low viscosity, ultra-high fluidity, colorless transparency, and low odor. Through simple impregnation, spraying and other processes, it can be dried at room temperature or quickly baked to form a nano level waterproof, moisture-proof, and insulation coating on the surface of electronic PCBA circuit boards and various components. This coating has the advantages of complete colorless transparency, no visible thickness, no impact on electronic signals and heat dissipation, and is non flammable, non explosive, safe and environmentally friendly. It has a wide range of application prospects in industries such as smart wearables, smart healthcare, smart homes, military communications, and new energy.

Performance characteristics

-High hydrophobicity: low surface energy (<10 dyne), can cover narrow gaps

-Ultra thin: 50-800 nm, with no visible thickness and colorless transparency

-Good weather resistance: resistant to UV rays, high and low temperature changes, waterproof and anti-corrosion

-High insulation: high impedance value, high density, and few pores

-No impact on signal and heat dissipation: Nano level ultra-thin thickness, no impact on signal and heat dissipation

-Excellent adhesion: suitable for various substrates such as metal, glass, ceramics, polymers, composite materials, laminates, etc

-Simple process: quick drying type, can use various processes such as soaking (recommended), spot coating, spray coating, spray coating, etc

-Good repair ability: allows for direct welding repair, the coating is easy to remove, and can be repainted for repair

-Environmentally friendly and non-toxic: using environmentally friendly electronic fluoride solution, with a slight odor and no harm to the human body, it is friendly to the environment

Physical and chemical properties

                                         涂层性能

Purpose

-Moisture proof: Nano coatings can effectively prevent moisture from causing harm to electronic products when exposed to damp environments or when water stains seep into the physical structure of electronic product casings with low waterproof levels and remain.

-Waterproof: In the event of accidental contact with water in electronic products, and under a certain water pressure, it can effectively protect the PCBA circuit board from continuous normal operation for a certain period of time. It is the second protective barrier in addition to the physical waterproof of the electronic product shell.

-Corrosion resistance: Electronic products can rapidly corrode when used in environments with corrosive gases and high humidity. Nano coatings have good hydrophobic and oil repellent properties as well as salt spray corrosion resistance, which can protect PCBA boards from various salts, acids, bases, and other corrosive substances under certain conditions.

Application field

This product can be widely used in fields such as consumer electronics/smart wearables, communication terminals, security/fire protection, military communication, instrumentation, sensing/IC chips/semiconductors, new energy, air/sewage treatment, intelligent robots, drones, medical, maritime, aviation, etc.

Usage

1. Ensure that the surface of the workpiece is dry, clean, dust-free, and oil-free.

2. Multiple processes such as soaking, coating, and spraying can be used. For many circuit boards that are moisture-proof, shielding is not necessary, but testing is always recommended.

3. Soaking method: Prepare a container for soaking (plastic or glass materials are acceptable), and the container must be clean and dry. Inject an appropriate amount of nanoliquid into the container, with a depth that covers the highest point of the circuit board and does not exceed 5 mm. Soak the circuit board in liquid for 1-2 seconds, then remove it (control the lifting speed) and let it dry in air (about 2 minutes).

4. It can be cured at room temperature or by heating. Room temperature: Generally, it takes 2-10 minutes for the surface to dry, and 12-24 hours for actual drying. In mass production, the assembly step can be entered after the surface has dried. Baking: The temperature range is 60-100 ℃, and the specific temperature is limited to the minimum temperature resistance of the components on the workpiece. For example, if there are lithium batteries on the circuit board, it is generally recommended to bake at 60 ℃ for 30 minutes.

To avoid thermal decomposition, the nanocoating solution should not be heated above 150 ° C, and dry polymer films should not be heated above 270 ° C.

Precautions

1. It is advisable to control the soaking time to 1-2 seconds. If the soaking time is too long, it can lead to excessive infiltration of nanofluid into components such as the microphone with large inner and small outer pores, causing the coating to accumulate beyond the nanometer level and reach a micrometer level thickness, resulting in possible problems such as reduced microphone volume.