Many people have heard that flame-retardant PP plastics are considered to be applied to home appliance materials. In fact, this is just an application of flame-retardant PP plastics. In view of its flame-retardant properties, it actually has its uses in many fields. Here, talk about the application of flame-retardant PP in the car.
As we all know, during the entire operation of a car, the place with the highest temperature, except the tires, is the engine. The material used to make the engine is a very special metal material. The requirements for the materials used around it are also relatively high. The material must not only be Has a certain degree of flame retardancy, but also has a high light-off temperature, to prevent the occurrence of fire.
Initially, automotive material R&D engineers tried a lot of materials without success. Afterwards, the use of flame-retardant PP plastics was found to be very effective. There are also some nylon materials. The first flame-retardant PP plastic has a relatively high melting point. Halogen-retardant PP has good flame-retardant properties, and has a high light-off temperature, which can reach 850°C or more. Therefore, even if the temperature of the engine is high, it will not cause fire and reduce the probability of accidents. Secondly, flame-retardant PP plastic has low thermal conductivity. Although the engine temperature is high, it will not affect the normal operation of other parts around it. It will not cause adverse effects on the operation of the car. In addition to the engine, other parts of the car also have flame-retardant PP plastic, different The place where the car brand and model are applied is not the same, such as car relays.
In addition, buses, as an important means of transport in the city, have caused many bus self-ignition incidents and arson incidents in the country in recent years. The results are heart-wrenching. As buses are crowded places, they often become criminals. The main crime scene is one of the reasons. In addition, the fire-retardant properties of the bus interior materials in China are poor, and there is no flame retardancy. In particular, the fire-retardant grades of plastics and textile products are too low, which is more likely to result after a fire. A large number of casualties, the impact is very bad.
Although relevant laws have been issued, the standards are relatively low and implementation is not in place. The Fire Protection Law promulgated by China in 1998 and a series of complementary laws and regulations formulated by the government all require the use of flame retardant in many areas such as public places and transportation vehicles. Fireproofing material. The requirements of GB8410 is 'burning characteristics of interior materials must meet the burning speed of 100mm/min'. GB13094-2007 "Safety requirements for passenger car structure" also requires the inner wall of the carriage, inner top, internal and external decorative parts should use flame retardant materials The flame retardancy should meet the requirements of GB8410. This threshold is very low, only a very simple requirement for the flame retardant properties of automotive interior materials, it is not enough to play a role in fire prevention, so this standard needs to be revised and improved. .
The use of flame-retardant materials and products to prevent personal injury and the occurrence of malignant fires is one of the effective methods and protective measures adopted by public transport in advanced countries over the years. Foreign experience and regulations have shown that when used in public places, After the requirements for mandatory flame-retardant products, especially halogen-free flame-retardant requirements, the probability of occurrence of vicious fires has been greatly reduced, and property losses and casualties have been further reduced. The foreign public transport fire-retardant must meet two conditions to achieve cleanliness. Environmental protection: First, the material must meet the halogen-free requirements, and the second is the fire-retardant smoke density requirement of the shell material, but the domestic public transportation does not meet these two conditions. The halogen-free flame-retardant material is scientific and reasonable. The concept of greenness and humanity is to adapt to the development of new energy in the future. Only the use of environmentally-friendly, non-polluting and safe public transportation in the process of promoting bus travel can make the entire public transportation system green, environmentally friendly and convenient. It is more scientific and reasonable.