Wallpaper with multiple functions, such as fire resistance and an automatic alarm in fire disasters, will be attractive for the interior decoration of houses. Herein, we report a smart fire alarm wallpaper prepared using fire-resistant inorganic paper based on ultralong hydroxyapatite nanowires (HNs) and graphene oxide (GO) thermosensitive sensors. At room temperature, the GO thermosensitive sensor is in a state of electrical insulation; however, it becomes electrically conductive at high temperatures. In a fire disaster, high temperature will rapidly remove the oxygen-containing groups of GO, leading to the transformation process of GO from an electrically insulated state into an electrically conductive one. In this way, the alarm lamp and alarm buzzer connected with the GO thermosensitive sensor will send out the alerts to people immediately for taking emergency actions. After the surface modification with polydopamine of GO (PGO), the sensitivity and flame retardancy of the GO thermosensitive sensor are further improved, resulting in a low responsive temperature (126.9 °C), fast response (2 s), and sustained working time in the flame (at least 5 min). Compared with combustible commercial wallpaper, the smart fire alarm wallpaper based on HNs and GO (or PGO) is superior owing to excellent nonflammability and high-temperature resistance of HNs, which can protect the GO (or PGO) thermosensitive sensor from the flames. The smart fire alarm wallpaper can be processed into various shapes, dyed with different colors, and printed with the commercial printer and thus has promising applications in high-safety interior decoration of houses.

中文翻译：

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基于耐火羟基磷灰石纳米线无机纸和氧化石墨烯热敏传感器的火灾报警壁纸

具有多种功能的墙纸，例如防火和火灾时的自动警报，将对房屋的室内装饰产生吸引力。本文中，我们报告了一种智能火灾报警墙纸，该墙纸是使用基于超长羟基磷灰石纳米线（HNs）和氧化石墨烯（GO）热敏传感器的耐火无机纸制备的。在室温下，GO热敏传感器处于电绝缘状态。然而，它在高温下变成导电的。在火灾中，高温会迅速除去GO中的含氧基团，从而导致GO从电绝缘状态转变为导电状态。通过这种方式，连接到GO热敏传感器的警报灯和警报蜂鸣器会立即将警报发送给人们，以采取紧急措施。用GO（PGO）的聚多巴胺进行表面改性后，GO热敏传感器的灵敏度和阻燃性得到进一步提高，从而导致低响应温度（126.9°C），快速响应（2 s）和持续的工作时间。火焰（至少5分钟）。与可燃商用墙纸相比，基于HNs和GO（或PGO）的智能火灾报警墙纸具有出色的HNs不可燃性和耐高温性，可以保护GO（或PGO）热敏传感器不受火焰影响。智能火灾报警墙纸可以加工成各种形状，用不同的颜色染色，