{"id":41748,"date":"2018-05-25T12:43:03","date_gmt":"2018-05-25T11:43:03","guid":{"rendered":"https:\/\/www.pbctoday.co.uk\/news\/?p=41748"},"modified":"2022-10-19T15:40:29","modified_gmt":"2022-10-19T14:40:29","slug":"smart-wallpaper-detects-resists-fires","status":"publish","type":"post","link":"https:\/\/www.pbctoday.co.uk\/news\/building-control-news\/smart-wallpaper-detects-resists-fires\/41748\/","title":{"rendered":"Breakthrough smart wallpaper detects & resists fires"},"content":{"rendered":"

Researchers from the Shanghai Institute of Ceramics and the Chinese Academy of Sciences have developed smart wallpaper that not only resists fire, but raises the alarm when one breaks out<\/h2>\n

In a paper published in the American Chemical Society\u2019s<\/a> ACS Nano<\/em> journal, the scientists outline how adding very fine wires and sensors can drastically improve a building\u2019s fire safety.<\/p>\n

Standard wallpaper and wallpaper paste are flammable, meaning they can actually enhance a house fire. This covering contains heat sensors and \u2018nanowires\u2019 made from hydroxyapatite, a member of the calcium phosphate family and the main inorganic ingredient in human bones and teeth.<\/p>\n

These sensors act as insulators at normal temperatures, but become electrically conductive at temperatures above 130\u00b0C. When this happens, a circuit is formed between the sensors and the alarm, and an alert is sent out. It takes some two seconds for the wallpaper to respond to a fire, and will continue for at least five minutes.<\/p>\n

Materials scientists have been looking for some time for industrial applications for hydroxyapatite, but it has proved problematic to \u2018grow\u2019 nanostructures<\/a> longer than 100 microns (one ten-thousandth of a metre).<\/p>\n

The team led by Ying-Jie Zhu, a professor of nanoscience at the Shanghai Institute of Ceramics<\/a>, has been successful in producing large quantities of ultra-long flexible hydroxyapatite nanowires. The researchers have also developed a way to make these nanowires self-assemble into highly ordered structures by injecting a paste containing them into alcohol.<\/p>\n

The team has assembled nanowires into high-strength \u2018nanoropes\u2019 that can be used to make the wallpaper, as well as fire-resistant textiles, fire shielding and heat insulation, and also for repairing bones.<\/p>\n

The researchers write in the ACS Nano paper that \u2018smart fire-alarm wallpaper\u2019 can be \u2018processed into various shapes, dyed with different colours, and printed with a commercial printer and thus has promising applications in high-safety interior decoration of houses\u2019.<\/p>\n

\n<\/div>","protected":false},"excerpt":{"rendered":"

Researchers from the Shanghai Institute of Ceramics and the Chinese Academy of Sciences have developed smart wallpaper that not only resists fire, but raises the alarm when one breaks 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