Most people's vehicles are placed in the open during the day, even if there is a garage when they get home from work at night, the company is still parked in the open during the day, which cannot avoid the problem of the vehicle being exposed to the sun. We can't stand it for a few minutes in the scorching sun at noon, in fact, the daily exposure to the sun also has a great impact on the car, and the car is also afraid of heat. It is mainly reflected in the following four points.
1. Rubber parts will accelerate aging
Common rubber parts include sealants, wiper blades, and tires, and their aging rate will be significantly accelerated. Sunlight exposure will increase the temperature of the rubber, triggering the pyrolysis of the rubber, and a large number of active free radicals will also be produced inside, resulting in the breakage of the rubber molecular chain and the reduction of performance. High temperatures also increase the rate of oxygen diffusion, accelerating the oxidation of rubber. At the same time, ultraviolet rays from sunlight can also accelerate the aging process, and ultraviolet rays can also break the molecular chains of rubber. Therefore, the reason for the rapid aging of rubber parts is mainly due to the influence of high temperature and ultraviolet rays.
The aging of tires is the most obvious, because replacing tires is more expensive and more likely to attract the attention of car owners. Vehicles parked in the basement every day can have a tire life of up to 7 years. And the vehicle that is placed in the open air every day has a lot of cracks on the tires by 5 years, and there are obvious signs of aging, so it is time to replace them. The difference in life span can be about two years, which is enough to see that sun exposure will accelerate aging. Therefore, the life of tires is not comparable, and it has a lot to do with where it is parked and the road it is driving on.
2. Paint fading and aging
Ultraviolet rays from sunlight can accelerate the aging process of car paint, causing paint color to fade, gloss loss, and even cracks. Vehicles that have been exposed to the sun for a long time will obviously lose their original brightness and luster, affecting the aesthetics of the vehicle. Through comparison, it can also be found that some cars look more dilapidated after five years, like an old car. And some cars are still looking new after five years, like a new car. If the paint is not maintained, there will be a significant difference between a car parked in the open and a garage after five years. Test results show that 1 hour of exposure to the scorching sun will accelerate the aging of car paint by 20 times.
In addition, it is easier to see the place where the paint has been repaired, because the quality of the paint repaired is different from the original paint, and the construction process is different. The paint that is repaired is more likely to age, change color, and fall off. First there is a burst of the varnish layer, and then there is a noticeable change in color. If the deformation is more serious at that time, there is more putty, and there will be cracking after long-term exposure. Problems with the touch-up paint will probably occur after five or six years, and there will be a significant color difference with other places on the car that have not been touched-up.
3. Aging of the interior and release of harmful gases
Car interiors, such as instrument panels and seats, are mostly made of plastic and fabric. Long-term exposure to the sun will cause these materials to deform, age, deteriorate the touch, and the gaps at the splicing will become larger or even loose, resulting in abnormal noise of the vehicle during driving. There are some old cars that have abnormal noises in the interior, especially when walking on a slightly bumpy road, you can hear obvious abnormal noises. And it is not easy to find the source of this abnormal sound during maintenance. In fact, it is because of the aging of the interior over time, which causes the two pieces to rub against each other.
In addition, at high temperatures, the leather and plastic parts in the car, especially the floor pads, seat cushions and other interior trimmings, will decompose and release harmful gases such as formaldehyde and benzene under the action of high temperatures, posing a threat to human health. Therefore, after the vehicle is parked for a long time, all the glass must be dropped before driving for ventilation, so that harmful gases can be discharged from the car, especially for new cars, special attention should be paid.
4. Increase potential safety hazards
After direct sunlight, it will cause the flammable materials in the carriage to explode, resulting in potential safety hazards. For example, smokers must have lighters, and many people have perfume bottles in their cars, which are great safety hazards in the car. In direct sunlight, sunglasses, reading glasses, and even bottled water can invisibly become "lenses", concentrating light at one point, and then generating high temperatures that cause spontaneous combustion of vehicles.
Some people say that the quality of the cars is very good now, and they are not afraid of the sun at all, and the new cars in the 4S store are all in the open air and have been drying. In fact, short-term exposure to the sun will not cause problems, whether it is aging or deformation, it is a long-term accumulation process, and the difference can only be seen with the naked eye after five years. The vehicles in the 4S store are generally sold within three months, so even if they are exposed to the sun every day, there is no abnormality. Of course, the problems caused by exposure to the sun are not a big problem, but some car owners will pay attention to every detail when maintaining their cars, and the problems they know and can avoid will be avoided as much as possible.