• 专利标题:   Preparation of modified graphene oxide/hydroxyapatite nanowire composite paper used in fire early warning device, involves adding graphene oxide in water, ultrasonically stripping to obtain graphene oxide dispersion liquid, and adding organic molecular solution and nano wire solution.
  • 专利号:   CN114889175-A
  • 发明人:   YU Y, FENG Y, KANG W, XU F, CHEN F
  • 专利权人:   UNIV FUZHOU
  • 国际专利分类:   B29D007/01, C01B025/32, C01B032/198
  • 专利详细信息:   CN114889175-A 12 Aug 2022 B29D-007/01 202289 Chinese
  • 申请详细信息:   CN114889175-A CN10575763 25 May 2022
  • 优先权号:   CN10575763

▎ 摘  要

NOVELTY - Preparation of modified graphene oxide/hydroxyapatite nanowire composite paper involves (i) placing the graphene oxide in water, and ultrasonically stripping to obtain 1 mg/mL graphene oxide dispersion liquid, (ii) adding 1-2 mg/mL organic molecular solution and 1- 2.5 mg/l hydroxyapatite nanowire solution into the prepared graphene dioxide dispersion solution, heat-stirring in an oil bath until the solution is fully mixed, and (iii) leaving the above solution, cooling the mixed solution at room temperature, after vacuum-assisted suction filtration, and drying. USE - Preparation of modified graphene oxide/hydroxyapatite nanowire composite paper used in preparation of fire early warning device (all claimed) e.g. smoke sensor and infrared sensor. ADVANTAGE - The modified graphene oxide/hydroxyapatite nanowire composite paper has fast fire response performance and excellent structure stability, and can be connected with the low-voltage direct current power supply, early warning lamp and other devices are connected in series to form a set of fire early warning device, solves the defects of the existing smoke alarm sensor and the infrared alarm sensor in use, effectively prevents fire risk, and reduces and even avoids the generation of fire and loss caused by it.