玻璃是汽车车身的一种重要材料。前几年,我国大部分客车的门窗使用普通平板玻璃和热弯退火玻璃,当它破碎时,其碎片象锋利的刀刃一样。据公安部门对车祸事故中头部受伤者的统计分析,发现因玻璃致伤者占32.9%,居首位。因此,公安部和交通部提出的国家标准GB7258—87《机动车运行安全技术条件》第9.4条规定”机动车车辆门窗必须使用安全玻璃,前挡风玻璃应采用夹层玻璃或部分区域钢化玻璃,其它门窗可采用钢化玻璃”。 Glass is an important material for car bodies. A few years ago, most of China’s passenger car doors and windows using ordinary flat glass and Rewan annealed glass, when it is broken, its fragments like a sharp blade. According to the statistical analysis of the head injuries caused by the car accident in the police department, it was found that the number of people injured by glass accounts for 32.9%, ranking the first place. Therefore, the Ministry of Public Security and Ministry of Communications proposed national standard GB7258-87 “Motor vehicle safety technical conditions,” Article 9.4 provides that “Motor vehicles windows and doors must use safety glass, the front windshield glass or glass should be used in some areas, Other doors and windows can be tempered glass. ”