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Silicone rubber conformal coating

  • 1-2577 coating Silicone rubber conformal coating
1-2577 coating Silicone rubber conformal coating

1-2577 coating Silicone rubber conformal coating

  • Product Description: Silicone flame retardant conformal coating
  • Product features: low viscosity, transparent, can replace the import
  • Application: automotive electronic circuit board, hard circuit board, precision electrical circuit board
  • Featured services: free sample, substitute for import
  • Product description: Silicone Conformal Coating, Circuit Board Conformal Coating, Conformal Coating,

一、【Product Characteristics】

1. Single component silicone resin, low viscosity, very low odor, good elasticity, easy repair, good insulation after curing.

2. Fast drying insulating paint with strong adhesion, excellent wear resistance, acid and alkali resistance, oil resistance, weather resistance and electrical properties.

3. Excellent high and low temperature resistance, good chemical resistance, room temperature (heating) curing, mostly used for products with high environmental requirements.

4. With ultraviolet light indicator, easy to detect the brushing effect.

5. The cured film has flame retardant effect and can reach UL94 V0 grade

6、can completely replace the imported brand Conformal coating DC 1-2577 Conformal coating


Yaoneng YN1-2577 is applied to all kinds of assembled PCBA circuit boards to protect the circuit boards from various chemicals, moisture, salt spray corrosion, dust and high and low temperature and other adverse environmental impact, prolong the service life of the equipment and improve the safety and stability of the products. The cured paint film has elasticity, strong adhesion and good aesthetics. At the same time, it has excellent insulation, moistureproof, anti-leakage, shockproof, anti-fouling, dustproof, mildewproof, anti-salt fog, anti-corrosion, corona resistance, anti-oxidation and other characteristics, which can play a significant multi-prevention effect. Mainly used in: hybrid integrated circuit, automotive electronic control board, electronic and electrical circuit board, aviation instrument board, flexible printed circuit, microcomputer control board, semiconductor crystal circuit board, etc.

三、【Technical index

Name of index


Index value

Before curing



Conformal coating YN1-2577





Visual inspection

Transparent liquid







Solid content



Surface drying time



Full drying time









shore A


Breakdown voltage



Dielectric constant



Volume resistance



Dielectric loss



Operation temperature


Waterproof class



Flame retardant



Heat resistant class


Class H




Above mechanical and electrical properties of the above products were measured 72 hours after

complete curing at 25℃ and relative temperature 55%

四、【Method of application

1. Clean and dry the circuit board. Before use, clean or wish the circuit board surface of dust, impurities, oil, and remove moisture and moisture. It is recommended to dry the board at 60℃ for 10 to 15 minutes. The circuit board can be taken out and coated with three-proof paint after natural cooling in the oven.

2. Shading and shielding. There are some areas and parts of the circuit board that are not allowed to be covered with coating, such as switches, sockets, connectors, radiators, etc. Yaoneng Company suggests that use adhesive tape to protect them.

3. Using process. A, spraying process: spraying method in the construction of the preparation of the conformal coating can be directly added to the spray gun can, the air pressure of the spray gun, spray nozzle and the flow of the paint can be adjusted, after sealing directly for spraying. When the consistency of conformal coating is too large, it can be used with Yaoneng 120 type special thinner. After mixing evenly, it should be allowed to stand for 10 minutes until the bubbles are removed before construction. The ratio of the conformal coating and thinner should not exceed 1.5 times. B, brush coating process: according to the size of the product, choose the wool brush correctly, pour the glue into the container, and then use the brush to stick the appropriate glue to the circuit board for uniform construction, according to the required thickness of the number of brushing. After gluing is completed, the surface can be assembled or packaged after curing. If you need twice for brush, before do the second one, you need to wait for the first paint to dry. C, dip coating process: dip coating parts immersed in the glue solution for 2-5 seconds, slowly lift the dip coating parts, tilt, until the excess glue natural flow off, dip coating parts flat on absorbent paper (small) or support (large), generally within 20 minutes, check the surface of the dip coating parts, the area is not painted brush paint.

4. Repair issues. The finished circuit board can be repaired with a plastic scraper to remove the paint film, and then the related parts can be repaired and replaced. After completion, the surface of the board can be cleaned and dried, and then the paint can be painted.


1. During the using process, the humidity of the construction site can’t be greater than 85%, otherwise there will be a slightly white hygroscopic phenomenon.

2. Ventilation and personal protection should be strengthened in the production process. Open fire is strictly prohibited and fire sources and heat sources should be kept away.

3.  Handle lightly, package cover should be promptly covered, used brush, spray gun should be cleaned in time, in order to be ready for the next time.

4. All parameters should be tested at least 48 hours after painting, when the relevant values reach the maximum and stable value。

5. Conformal coating will generally have a smell, but after completely solidified there is no smell.

六、【Packing and storage

1. This product is packaged in 3.5kg/ can, 18kg/ barrel, or packed as customer's negotiation.

2. This product is flammable, in the ventilated, dry, cool, sealed storage, shelf life of 6 months.