Car wading is not a regular problem, but each driver must have this wading experience. When the summer rain season arrives, a large flood of water will appear on the surface of a large flood, if it can avoid wading Should choose to change the driving route, but in the case of a last resort only can choose to wading, then after the car wading need to repair and maintain the car in a timely manner. However, there are many people who have such a question: What should you watch out for when driving in a car? If the car does not automatically switch off during wading, do you still need to maintain it? After the car wading, it was found that there were no obstacles. When there was no automatic flameout during the wading, the car was no longer maintained and inspected. This is a misconception. The so-called wading means that when the water level has reached two-thirds of the vehicle's bumper and tires, this is a wading condition. In this case, inspection and maintenance are required regardless of whether the vehicle is faulty. The specific safe operation procedures for the wading process of the automobile are as follows: 1. When the car encounters must wading, it should be observed in time. If the water level reaches the position, if it has reached two-thirds of the bumper or the tire, it means that the driving will have a certain degree of danger. First, it must be decelerated. If the speed is too high, the amount of water passing through the vehicle will increase, and rain will be allowed to enter the cab through the cabin or chassis. In order not to face the vehicle traveling across from the opposite side, it should be avoided in time. 2, the car wading process to ensure that the low-speed driving, should be done without stopping without shifting without oil does not accelerate, generally should be in the low-grade high oil uniform driving, with particular attention is not to splash big splashes. 3. If the vehicle automatically shuts off during the wading process, it cannot be restarted immediately. The ignition switch should be turned off. Drag the car to the wading place and check if the engine has water. If the water has already entered the valve from the air filter, it will pass through the trachea. Into the cylinder, at this time can not start motoring, which will cause the engine's crankshaft and even Xuan and other parts of the deformation. Automatic engine shutoff in water is most likely to enter the water and can only be repaired by a neutral trailer to a garage. PP plastic, also known as polypropylene plastic, is another fine resin varieties, following the development of nylon, which is a semi-crystalline materials, the advantage is obvious, with excellent mechanical properties and heat resistance, with a high not hydrophilic sex, almost non-absorbent. The disadvantage is poor low temperature impact resistance, easier to aging. However, for comparison PE plastic having a higher melting point.
PE plastic is polyethylene plastic, its corrosion resistance and electrical insulation are very strong. Rigid hardness and strength are relatively high, and the same PP plastic, it also very small water absorption.
Polycarbonate (referred PC) is a polymer molecular chain containing a carbonate group, an ester group according to the structure can be divided into aliphatic, aromatic, aliphatic - aromatic and other types. Which due to the aliphatic and aliphatic - aromatic polycarbonate lower mechanical properties, thereby limiting its application in engineering terms. Currently, only the aromatic polycarbonate obtained industrial production. Due to the special nature of the polycarbonate structure, it has now become the top five fastest growing engineering plastics in general engineering plastics.
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