总之塑料可以具有多种特性,每一个品种有它的特长。从在汽车上的使用来看,不同的塑料可分别满足比重小、绝缘性好、减振、耐磨和耐蚀等要求。一般塑料的比重在0.9～2.3之间,对于减轻自重有特殊的意义。大多数塑料具有较高的介电强度(即绝缘破坏强度),体积电阻通常在10~(11)～10~(16)Ω-cm范围内,因此广泛用于制造汽车电器及仪表。塑料的耐热性能 In short plastic can have a variety of characteristics, each species has its own specialty. From the use of the car point of view, different plastics can meet the proportion of small, good insulation, vibration, wear and corrosion resistance and other requirements. The proportion of the general plastic between 0.9 to 2.3, to reduce the weight has a special significance. Most plastics with high dielectric strength (ie, dielectric breakdown strength), the volume resistance is usually 10 ~ (11) ~ 10 ~ (16) Ω-cm range, it is widely used in the manufacture of automotive electronics and instrumentation. Plastic heat resistance