How is ITW Silicone Conformal Coating stored properly?

1. Cleaning: Before coating, the dust, moisture (moisture) and oil on the surface of the object to be coated must be removed and kept dry. 2. Covering:

If there are some connectors, sockets, switches, plug-in boards and other areas that are not allowed to have coating materials. 3. This product can be constructed by brushing, spraying, dipping and other methods. The coating is limited to no bleeding and no leakage.

The thickness of the primary coating film is generally between millimeters. 4 After the first coating film is dry, it can be applied a second time. 5. Brushes, spray guns, etc. should be washed in time for next use.

Many users have a cognition of the characteristics of the product itself when using conformal coating, but they do not grasp the changes in the characteristics of conformal coating when the use environment, temperature and humidity change.

1.Viscosity change: conformal coating will have different viscosity changes before and after use, the flow rate of conformal coating will change with the change of temperature, the higher the temperature, the faster the flow rate tested, which must be clear;

2.Coating thickness: If a thicker coating is desired, it is best to obtain it by applying two thinner coats, and the first layer must be fully cured before the second coat is allowed to be applied;

3.The thickness of the film layer: the thickness of the film layer depends on the application method, the amount of diluent is large, the viscosity of the glue is low, and the thickness of the glue is thin; On the contrary, the viscosity of the glue is high, and the thickness of the glue is thick;

4.Inconvenient coating area: Some PCB circuit board components are inconvenient to coat, such as connectors, software sockets, switches, radiators, heat dissipation areas, plug-in board areas, etc., are not allowed to have coating materials, it is recommended to use tearable solder mask CS5001 to cover;

5.Temperature and humidity: All coating operations should be carried out under the condition that the temperature is not lower than 16 and the relative humidity is not less than 75.

PCB circuit board as a composite material will absorb moisture, if not wet, Schnees conformal coating can not fully play the due protective role. Pre-drying and vacuum drying can remove most of the moisture;

6.Coating repair method: If you want to repair the device that has been coated, you only need to directly contact the soldering iron with the coating to remove the component, install the new component, and then clean the area with a brush or solvent [thinner], then dry, and re-coat with conformal paint;

7.Conformal coating generally contains flammable solvents: high temperature and open flame should be avoided, sufficient ventilation conditions should be provided, and long-term inhalation of volatile gases and long-term repeated contact with ** damage; The processed PCB circuit board components after being coated with conformal paint and fully cured basically have no harm to the human body;

8.Operator safety: Attention should be paid to safety and protection during the coating operation, the environment should be ventilated, and the operator should wear protective gas masks.

Silicone conformal coating is a conformal coating made of silicone material, with the main features: elasticity, high temperature resistance, good waterproofness, and no odor.

Three-proof refers to moisture-proof (waterproof), anti-leakage (insulation), and anti-corrosion.

The first choice for conformal coating is Xinwei conformal coating, which includes nano conformal coating, acrylic conformal coating, aerosol can conformal coating, polyurethane conformal coating, epoxy conformal coating, silicone conformal coating, UV conformal coating, which are mainly used for the protection of circuit boards.

Conformal circuit board coating is widely used in mixing various integrated circuits, automotive electronics series control boards, household appliance control boards, aviation instrumentation circuit boards, flexible printed circuit boards, computer control boards, industrial control boards, semiconductor crystal circuit protection boards, battery protection boards, electronic toy control boards, LED control boards, inverter circuit boards, agricultural equipment control boards, electric vehicle control boards, outdoor LED displays, security control boards, motor control boards, etc. Lime conformal coating has excellent three-proof effect.

The conformal coating of modified silicone belongs to the relatively high-end conformal coating, with good conformal performance and strong adhesion, such as high-tech products, and electronic products with high requirements for salt spray at the seaside. In order to make the paint film fully moisten the sticky, Mintong conformal coating generally requires both surfaces to be sized, at the same time, the number of times of sizing is determined by the nature of the conformal glue and the sticky, such as solvent-free epoxy glue and dense sticky generally coated 1 time, and most of the solvent-based conformal adhesive and porous sticky need to be coated 2 3 times, in the sizing of multiple times can not be rushed, to wait for a few minutes after the solvent of the first glue basically volatilizes the surface dry, before the next sizing operation.

First of all, you need to have an understanding of the material of the conformal coating itself and use the appropriate method. Conformal coating is one of the chemicals, some conformal coating has the function of flame retardant, and some conformal coating is flammable, which will burn when encountering high temperature Mars. Therefore, special attention should be paid to the safety of use in the process of operating conformal coating.

Mintong recommends that when using conformal coating, you must choose a spacious and ventilated place to encourage the respiratory tract to be infected with too many chemicals, which is too irritating and harmful to the body. Do not come into direct contact with **, and wear a mask and gloves before use to avoid **. After curing, the conformal coating has no harm to the human body and can be used with complete confidence.

Before using conformal coating, clean the electronic motherboard with washing water, then put it in the oven to dry, and then apply conformal coating, so that they can better stick together and are not easy to blister. If you want to prevent moisture, corrosion, and salt spray, apply a second coat after applying a conformal coating.

Some boards have power strip interfaces, and the parts of the connection ports that need to be energized must be careful not to be coated with conformal paint. Because the conformal coating has the function of insulation, it will not be powered or affect the use function of the product. Cover these parts with adhesive tape before use, and then apply conformal coating, which can be peeled off directly after the operation is completed.

And brushes, spray guns, and containers should be cleaned with special thinners.

It is also possible to directly use conformal paint with silicone, without any modification, lime L1-2577 conformal coating, it is estimated that it can meet you, you can go and see.

Yes, the general heating to 60 100 degrees, the specific heating parameters are recommended to consult the product manufacturer, the specific curing parameters of each product are different, if you need help in this regard, you can go to Xishun Silicone's ** to see, their three waterproof varieties are very complete.

The smell of silicone is smaller than that of polyurethane, and the best exhaust system is to form negative pressure in the room, and the air in the workshop flows in one direction, so that all the chemical solvents can be pumped away, which greatly reduces the impact of chemical solvents on the health of employees. In this case, the odorous conformal coating can act as an indicator, allowing employees to judge whether the ventilation of the workshop is good, whether some volatile solvents are leaking or have not been completely excluded from the outside of the workshop.

The smell of polyurethane conformal paint should be larger, Mintong silicone conformal paint is environmentally friendly and low odor, and during construction, masks should be worn and the site should be ventilated.

The smell of silicone is less than that of polyurethane, and the silicone conformal coating is basically odorless. AOSBORNE Adhesives is the answer for you.