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Silicone rubber conformal coating

  • 172 Solvent-free silicone conformal coating - copy
172 Solvent-free silicone conformal coating - copy

172 Solvent-free silicone conformal coating - copy

  • Product Description: Solvent-free silicone conformal coating
  • Product features: medium viscosity, transparent, universal
  • Application: protection of sensitive components, electronic and electrical circuit boards
  • Featured services: free sample, can replace Momentive conformal coating
  • Product description: 172 Solvent-free silicone conformal coating

I. [Product Features]

1, one component silicone resin, low viscosity, very low odor, after curing film elasticity, easy repair, good insulation performance

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

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

4, no solvent - based silicone conformal coating, can replace maitu momentive ECC3050S silicone conformal coating.

Two, [scope of application]

Yaoneng 172 conformation coating is suitable for 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: rigid and flexible circuit board coating, electronic printed circuit board (PWB) protection, automotive electronic control board, lighting industry, protection of sensitive components, electronic and electrical circuit board, aviation instrument board, flexible printed circuit, microcomputer control board, semiconductor crystal circuit board, home appliance control system, etc.

三、【Technical index

Name of index


Index value

Before curing



Conformal coating 172





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%

IV. [Usage]

1. Clean and dry the circuit board.Before use, clean or clean 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. Covering and shielding.There are some areas and parts of the circuit board that are not allowed to be covered with triple paint, such as switches, sockets, connectors, radiators, etc.Yoneng recommends using tape or other measures for protection before construction.

3, the use of technology.A, spraying process: spraying method in the construction of the preparation of the three anti-paint 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 the three paint 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 three paint 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 to wait for the first paint to dry before brushing.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. Fix the problem.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.

5. [Precautions]

1, three anti paint in use, the humidity of the construction site can not be greater than 85%, otherwise there will be a slightly white hygroscopic phenomenon.

2, the production process should strengthen ventilation and personal protection work, prohibit open fire, and away from the source of fire and heat source.

3, handling light, packaging cover should be promptly covered, used brush, spray gun should be cleaned in time, in order to be ready for the next time.

4, the test of the parameters of emotion and energy should be carried out at least 24 hours after painting, when the relevant values reach the maximum and stable value.

5, three anti paint will generally have a smell, but the three anti paint is completely cured after no smell.

VI. [Packaging and Storage]

1. This product is packaged in 3.5kg/ can, 18kg/ can, and can be packaged according to customer consultation.

2. This product is flammable, sealed and stored in ventilated, dry, cool and dark place. Shelf life is 12 months.