The secret of thermal repair of paint protection film
As the demand for cars increases, car owners pay more and more attention to car maintenance, especially the maintenance of car paint, such as waxing, sealing, crystal plating, film coating, and the now popular paint protection film . When it comes to paint protection film, its self-healing scratch function has always been talked about by people. I guess everyone has also heard about "heat repair" and "second repair" of scratches.
Many people are immediately attracted to "Repair in Seconds" when they see it. In theory, it seems that scratch repair in seconds is better, but in fact, this is not the case in actual use. Scratch repair is not faster, the better. Scratch "heat repair" is more advantageous.
How effective is scratch heat repair? What are the advantages?
Before that, we have to talk about "second repair".
Many of the early PPF materials made of PVC or PU had a "second repair" function and could be quickly and automatically repaired at room temperature. When PPF is scratched by external force, the molecules in PPF are dispersed due to extrusion, so there is no scratch. When the external force is removed, the molecular structure returns to its original position. Of course, if the external force is too great and exceeds the range of movement of the molecule, there will still be traces even if the molecule returns to its original position.
Do you know about PPF heat repair?
PPF heat repair (Self-healing Paint Protection Film, referred to as PPF) is an advanced automotive surface protection technology used to protect vehicle paint from scratches, stone impacts, bird droppings corrosion and other daily damage. One of the key properties of this material is its self-healing ability, which can automatically repair minor scratches and marks on the surface under certain conditions.
Currently, the better PPF on the market is TPU material, which is a thermoplastic polyurethane film containing anti-UV polymer. Its good toughness and wear resistance protect the paint surface from being scratched. After installation, it can isolate the paint surface from air, sunlight, acid rain, etc., and protect the paint surface from corrosion and oxidation.
One characteristic of PPF made of TPU is that when encountering slight scratches, small scratches on the film can be automatically repaired under high temperature and restored to their original appearance. This is because there is a polymer coating on the surface of the TPU material. This transparent coating has scratch memory repair function. "heat repair" requires recovery at a certain temperature, and currently only PPF made of TPU has this ability. The molecular structure of the thermal repair coating is very tight, the density of the molecules is high, the elasticity is good, and the stretch rate is high. Even if scratches occur, the marks will not be very deep due to the density. After heating (sun exposure or heat water pouring), the damaged molecular structure will automatically recover.
In addition, the heat-repair coated car jacket is also much better in terms of hydrophobicity and stain resistance. The surface is also much smoother, the molecular structure is tight, dust is not easy to enter, and it has better resistance to yellowing.
Key points of PPF heat repair
1: Approximately how deep a scratch can be automatically repaired?
Small scratches, ordinary spiral patterns, and other scratches caused by minor scratches on the car during daily cleaning can be automatically repaired as long as the transparent coating with memory repair function is not damaged.
2: At what temperature can it be automatically repaired?
There are no strict limits on the temperature for scratch repair. Relatively speaking, the higher the temperature, the shorter the repair time.
3: How long does it take to repair scratches?
Repair time will vary depending on the severity of the scratch and the ambient temperature. Normally, if the scratch is minor, it will take about an hour to repair at room temperature of 22 degrees Celsius. If the temperature is higher, the repair time will be shorter. If a quick repair is needed, pour hot water on the scratched area to shorten the repair time.
4: How many times can it be repaired?
TPU paint protection film, as long as the transparent memory coating on the film is not damaged, there is no limit to the number of times scratches can be repaired.
In general, PPF thermal repair can protect vehicles, enhance appearance, add value, save costs, and is also environmentally friendly and sustainable, making it an ideal choice for vehicle protection and beautification.
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Post time: Mar-13-2024
