Preparation of the surface of the body for the application of paintwork or polishing requires absolute cleanliness, and it is here that is indispensable. car-canner. Modern aerosols allow you to quickly remove invisible to the eye contaminants such as silicones, oils and bitumen stains that can spoil the result of the work. The use of a high-quality spray guarantees the adhesion of materials and the durability of the protective layer.
Unlike liquids in large canisters, the aerosol format allows uniform spraying without the need for additional tools. This is especially important when working with hard-to-reach areas and local repairs where accuracy of application is important. The correct choice of composition directly affects the quality of the final coating and the absence of defects.
Why you need a degrease before painting and polishing
The primary task of any degent (degreasing agent) is the removal of fat films, which are inevitably formed on the body during operation. Even if the car looks clean after washing, there are microscopic residues of wax from polishing, road reagents and hand marks on the surface. Without removing these contaminants, paint or polymer will lie unevenly, forming craters.
Professional alcohol-based or special solvents effectively break down organic matter without damaging the factory paint coating. It is important to understand that regular gasoline or acetone can be too aggressive for plastic and rubber seals. Specialized vehicles are designed taking into account the chemical resistance of materials used in modern mechanical engineering.
Using a specialized aerosol instead of household solvents prevents the turbidity of the plastic and the appearance of microcracks on the varnish.
In addition, degreasing allows you to identify hidden defects that were invisible under the layer of dirt. After processing, the surface becomes matte, which helps the master to see all the scratches and risks before polishing. This is a critical step to getting the perfect gloss.
Types of degreasing: aerosols against liquids
There are two main packaging formats on the autochemistry market: sprays in pressure cans and liquids in canisters. Aerosol degreaser It benefits in usability, as it does not require the purchase of a spray gun and provides fine spraying. This allows you to save money when processing small areas.
Liquids in large containers are beneficial for services where degreasing is carried out daily on an industrial scale. However, for a garage master or a car owner planning a one-time job, a can of 0.5-0.7 liters will be the best solution. It is always ready to work, does not take up much space and is sealed when stored.
- 🚗 Ease of application: uniform layer without using rags at the spraying stage.
- ⏱ Drying speed: Aerosols often evaporate faster, shortening the time of technological pause.
- 🧪 Chemical stability: closed balloon protects the composition from oxidation and moisture.
It is worth noting that some professional formulations in cans contain additives that prevent the re-deposition of dust immediately after drying. This gives you extra time to work with the surface. When choosing between formats, always evaluate the scope of the work planned.
Top popular brands of degreasing in aerosol
The market offers a wide range of domestic and imported products. Leaders of sales are often brands that have proven themselves in body repair. For example, products APP W900 or Mobihel Anti-Silicon in the spray format are considered a standard for preparation for painting.
More affordable options such as Sinclair or Hi-GearThey are excellent for pre-cleaning before polishing or pasting with vinyl film. They effectively remove bitumen and tar without leaving iridescent divorces. It is important to pay attention to the composition: the presence of chlorine or aggressive ketones can be dangerous for some types of plastic.
| Brand | Basis | Volume | Features |
|---|---|---|---|
| APP W900 | Alcohol mixture | 0.5 l l | Fast drying, footprints. |
| Mobihel | Organic solvents | 0.5 l l | High dissolving capacity |
| Sinclair | White Spirit | 0.52 l | Budget option, good for bitumen |
| Runway | Mixture of alcohols | 0.52 l | Universal application |
When buying, always check the release date indicated at the bottom of the can. Over time, the propellant may lose its properties, which worsens the quality of the spray. Try not to buy products with an expiring expiration date, even at a large discount.
Why are imports more expensive?
Imported degreasers often undergo stricter quality control of raw materials, which ensures that there are no impurities that can cause a chemical reaction with the varnish. In addition, the price includes logistics and certification costs, but the risk of damage to expensive coverage with them is minimal.
Technology of correct application of funds
The process of degreasing seems simple, but a breakdown in technology can negate all efforts. First, the surface must be thoroughly washed with shampoo and dried. Dust and sand remaining on the body, when rubbed with a napkin with a solvent, will turn into an abrasive and leave deep scratches.
Shake the can for 1-2 minutes to mix the components. Spray the product from a distance of 15-20 cm in circular movements. Do not pour the liquid with a jet, let it evenly cover the area. Immediately after application, until the composition is dry, wipe the surface with a clean, lilaless wipe made of microfiber or a special technical rag.
☑️ Degreasing algorithm
Work should be in a well-ventilated room, as solvent vapors are toxic. Use a respirator and gloves. If you are processing a large element, divide it into zones so that the product does not have time to evaporate before the time of wiping. This is especially true in hot weather.
⚠️ Warning: Never use the same wipe for the application and for the final wipe. First, you collect the dirt with solvent on the first cloth, and the second, dry and clean, polish the surface to the ideal.
Common mistakes in using aerosols
One of the most common mistakes is the use of dirty or puffy fabrics. Cheap rags can leave on the surface microscopic villi, which when painted will appear as bumps. For finishing preparation under varnish or ceramics, it is better to use special lilac-free wipes.
Another mistake is to try to save and use acetone or 646th solvent. These substances are too aggressive and can instantly dissolve not only dirt, but also the varnish itself, especially if it is already damaged or has been repainted before. The result will be a matte spot that will have to be polished or repainted.
- 🚫 Ignoring temperature: cold spray sprays worse, the tool can fall in large drops.
- 🚫 Savings on napkins: Use old T-shirts or waffle towels.
- 🚫 Disturbance of exposure time: Some formulations take time to react, others need to be washed off immediately.
Before starting work, warm the can to room temperature (about 20 ° C), if it was stored in a cold garage. This will improve the spray quality and solvent efficiency.
It is also important not to forget about plastics. Many degreasing agents leave a whitish plaque on the matt plastic, which is very difficult to remove. If you work near bumpers or moldings, be extremely careful or seal them with paint tape.
Safety measures and storage of canisters
Aerosol cans are pressurized and contain flammable substances. It is strictly forbidden to heat them above 50 ° C, to open or burn even empty containers. Store the product should be away from heating devices and direct sunlight, in a place inaccessible to children.
When the product hits the skin, a chemical burn or dermatitis may occur due to degreasing of skin fat. Work only with nitrile gloves. If you get into the eyes, wash them immediately with plenty of water and see a doctor. Pairs of solvents when inhaled in high concentrations cause dizziness and nausea.
⚠️ Warning: Do not smoke or use an open fire in a room where degreasing is performed. The concentration of solvent vapor in the air can reach explosive concentrations, especially in the confined space of the garage.
The shelf life of the closed can is usually 3-5 years from the date of manufacture. After opening, it is recommended to use the contents for one season, as the propellant can gradually evaporate through the valve, even if the balloon is closed with a cap.
Safety when working with aerosols depends on the ventilation of the room and the use of PPE (gloves, respirator, glasses).
Frequently Asked Questions (FAQ)
Can I use a degrease to clean the interior of the car?
Use a standard body degreaser to clean the cabin categorically not recommended. Aggressive solvents can damage the dashboard plastic, discolor the fabric and destroy the glue holding the skin. For the cabin there are special cleaners (cleaners) marked "for the interior".
How to replace a degreaser if it is not at hand?
In emergency cases, you can use isopropyl alcohol diluted with water, or special gasoline "Kalosha". However, these funds may be inferior in the efficiency of removing complex bitumen spots. White Spirit It is also suitable, but dries longer and can leave a greasy coating.
Do I need to wash the degrease off with water after application?
No, modern means are designed for complete evaporation (evaporation). Washing with water can lead to repeated surface contamination or water corrosion under the varnish if the water gets into microcracks. It is enough to simply wipe with a dry clean napkin.
Is a degreasing agent dangerous for rubber seals?
Most car degreases are safe with short-term contact. However, prolonged exposure to aggressive solvents (acetone, gasoline) can lead to swelling or drying of rubber. Try not to pour the product directly on rubber parts and immediately wipe the leaks.