• 专利标题:   Preparing temperature-responsive gel comprises e.g. constructing a network structure of N-isopropylacrylamide, polyvinyl alcohol and N,N'-methylene bis(acrylamide) under the action of cross-linking agent and initiator.
  • 专利号:   CN115490809-A
  • 发明人:   ZHU B, MIN X, ZHU J
  • 专利权人:   UNIV NANJING
  • 国际专利分类:   B32B017/00, B32B017/06, B32B017/10, B32B017/12, B32B027/12, B32B027/28, B32B003/08, B32B037/00, B32B038/16, B32B005/02, C08F220/54, C08F222/38, C08F261/04, C08F292/00
  • 专利详细信息:   CN115490809-A 20 Dec 2022 C08F-261/04 202313 Chinese
  • 申请详细信息:   CN115490809-A CN10758326 29 Jun 2022
  • 优先权号:   CN10758326

▎ 摘  要

NOVELTY - Preparing temperature-responsive gel comprises adding N-isopropylacrylamide, polyvinyl alcohol and N,N'-methylene bis(acrylamide) into water to obtain organic solution, adding nano-alumina particles and coupling agent into the organic solution to obtain a precursor solution, bonding nano-alumina particles to the organic phase in the organic solution through the coupling agent, adding crosslinking agent and an initiator to the precursor solution, constructing a network structure of N-isopropylacrylamide, polyvinyl alcohol and N,N'-methylene bis(acrylamide) under the action of a cross-linking agent and an initiator to obtain final product. USE - The temperature-responsive gel is useful in preparing temperature control film for outdoor temperature control device (all claimed). ADVANTAGE - The temperature-responsive gel: has high reflectivity of 96.2%, and temperature response threshold value of 30-50 ℃, and provides a temperature control film that realizes full automatic temperature adjustment; reaches the purpose of low carbon and is environmentally friendly. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: 1. temperature-responsive gel comprising a gel network body and nano-alumina particles, the nano-alumina particles are connected to the gel network body, the main body of the gel network is constructed by N-isopropylacrylamide, polyvinyl alcohol and N,N'-methylene bis(acrylamide), the temperature-responsive gel has a temperature-affected threshold, and when the temperature is lower than the threshold, the gel is transparent, and when the temperature is above the threshold, the gel is white; 2. temperature control film comprising a gel layer and a graphene oxide layer, the gel layer is the temperature-responsive gel or the temperature-responsive gel, and the graphene oxide layer is a carrier loaded with graphene oxide; and 3. preparing temperature control film, comprising (i) preparing graphene oxide layer, a spray the graphene oxide solution on the preheated fabric, and baking the fabric sprayed with graphene peroxide at high temperature in vacuum, and (ii) assembling a gel layer and a graphene oxide layer in a stacked form, the gel layer being the temperature-responsive gel or temperature-responsive gel.