Breuning Eleonore E, Papini Remo P G
University Hospital Birmingham, Raddlebarn Road, Birmingham B29 6JD, UK.
Burns. 2008 Aug;34(5):703-6. doi: 10.1016/j.burns.2007.07.019. Epub 2007 Nov 26.
Hair straighteners have become increasingly common household appliances. The purpose of this study was to investigate the temperatures reached by the exposed plates of hair straighteners when switched on, and the length of time taken to cool to a safe temperature after switching off. We also present the case of a child with deep dermal burns caused by a hair straightener, highlighting its potential danger when left unattended.
Eight different hair straighteners were tested using a calibrated thermometer. Maximum temperature reached and length of time taken to cool to 40 degrees C were recorded three times for each straightener.
Among the eight straighteners tested, the size of the plates varied between 22.5 and 53.9cm(2). Plate material was ceramic in all but one case. Average maximum temperature was 163 degrees C (122-210 degrees C). Mean time taken to cool to 40 degrees C from switch-off was 26min (18-44min). None of the devices tested could be locked closed.
Hair straighteners present a significant risk of burn when left unattended, both while switched on and for up to 44min after turning off. We offer some recommendations to improve safety.
直发器已成为越来越常见的家用电器。本研究的目的是调查直发器开启时其外露发热板所达到的温度，以及关闭后冷却至安全温度所需的时间。我们还介绍了一名儿童因直发器导致深度真皮烧伤的病例，强调了无人看管时直发器的潜在危险。
使用校准温度计对8种不同的直发器进行测试。每种直发器记录三次达到的最高温度以及冷却至40摄氏度所需的时间。
在测试的8种直发器中，发热板尺寸在22.5至53.9平方厘米之间。除一个案例外，所有直发器的发热板材质均为陶瓷。平均最高温度为163摄氏度（122 - 210摄氏度）。关闭后冷却至40摄氏度的平均时间为26分钟（18 - 44分钟）。测试的设备均无法锁定关闭。
直发器在开启时以及关闭后长达44分钟无人看管的情况下，都存在显著的烧伤风险。我们提供了一些提高安全性的建议。
