The degree of aging and aging of polymer compounds such as rubber and plastic is mainly determined by the oxygen content in the atmosphere, the air temperature and the moisture content in the air. The amount of ventilation is an important indicator of the ventilation aging test chamber, and its size directly affects the effect of the product temperature aging test. The general ventilation type aging test box has two forms of natural ventilation and forced ventilation. The forced convection (blower) or natural convection is used to fully circulate the hot air in the tank to keep the temperature inside the box uniform and eliminate the aging. The volatiles produced in the process are replenished with fresh air to keep the air composition consistent. Therefore, under constant temperature conditions, a certain wind speed or air volume corresponds to a certain oxygen, moisture content and temperature uniformity, which corresponds to the reliability of a certain aging test. When the wind speed is large, the gas exchange volume is large, the circulation convection is sufficient, the aging effect is obvious and rapid; when the wind speed is small, the gas exchange amount is small, and the aging effect is slow. Generally, the materials are stipulated in the aging test. For example, the amount of air exchange required for rubber aging is 8 to 20 times per hour (refer to the gas of 8 to 20 volumes per hour). The aging test should be carried out according to the specified amount of ventilation to obtain better results.
As for car washing in auto detailing shops, here are two types of cleaner: all purpose and soap&shampoo. Those can be worked with foam gun,foam cannon, or two Car Wash Buckets with wash mitt together
After car washing, on car paint, here still will use other cleaners to clean impurities on car car body, so will use like scale remover , bug stain remover, rust remover,cement remover, iron powder remover etc.
Those cleaners almost work with spray bottle.
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