石墨烯/酚醛树脂浸渍改性地采暖地板的制备与表征  

Preparation and characterization of heating floor impregnated by graphene/phenol-formaldehyde resin

作　　者：陶鑫 吴燕 徐伟[1,2] 詹先旭 张继雷[4] TAO Xin;WU Yan;XU Wei;ZHAN Xianxu;ZHANG Jilei(College of Furnishings and Industrial Design,Nanjing Forestry University,Nanjing 210037,China;Co?Innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing Forestry University,Nanjing 210037,China;Dehua Tubao New Decoration Material Co.,Ltd,Deqing 313200,Zhejiang,China;Department of Sustainable Bioproducts,Mississippi State University,Starkville,Mississippi State 39759,USA)

机构地区：[1]南京林业大学家居与工业设计学院,南京210037 [2]南京林业大学林业资源高效加工利用协同创新中心,南京210037 [3]德华兔宝宝装饰新材股份有限公司,浙江德清313200 [4]美国密西西比州立大学可持续生物质产品系,密西西比斯塔克维尔39759

出　　处：《林业工程学报》2019年第5期167-173,共7页Journal of Forestry Engineering

基　　金：浙江省重点研发计划(2017C01117);国家重点研发计划(2017YFD0601104)

摘　　要：为了缩短传热时间、降低能耗,以高导热纳米材料石墨烯为填料,以水性酚醛树脂为载体溶液,配制石墨烯/酚醛树脂浸渍改性剂,开发一种导热性能良好的地采暖地板。以吸光度、透射电镜表征石墨烯在酚醛树脂中的分散性能,以改性单板导热系数、多层复合地板导热效能表征地采暖地板的传热性能,分析石墨烯添加量、浸渍改性剂分散性对地板导热性能的影响,确定浸渍改性最优配方工艺。结果表明:在试验范围内,石墨烯/酚醛树脂浸渍改性地采暖地板可获得更好的导热性能。浸渍改性剂的分散性、浸渍改性单板的导热性与石墨烯添加量有关,同一树脂固含量下,2%质量分数为最佳石墨烯添加量。通过对比试验分析,酚醛树脂固含量为20%,石墨烯添加量为2%时,浸渍改性单板导热系数提高2倍,为0.272 W/(m·K),浸渍改性地采暖地板导热效能为21℃/h。扫描电镜表明石墨烯随浸渍剂进入木材一部分的细胞腔中,X射线图谱也证实石墨烯与木材纤维素的羟基发生反应,导致结晶度数值降低。It is a challenge to produce energy efficient heating floor with traditional wood material due to its inherent low heat conductivity.In order to shorten the heat transfer time,and reduce the energy consumption,the multi?layer solid wood composite floor with good thermal conductivity was developed by laminating impregnated poplar veneers.Using graphene as a filler and phenol?formaldehyde resin as carrying solution,an innovative agent was impregnated into veneers through the vacuum treatment.The dispersing performance of the graphene in the phenol?formaldehyde resin was characterized by the absorbance of the impregnation agent.The thermal conductivity of the modified veneers and the heat transfer performance of composite floor were used to characterize the thermal property of the wood heating floor.The influence of the amount of graphene addition and the dispersibility of the impregnation agent on the thermal property of the wood heating floor was analyzed.The results showed that,the multi?layer wood composites prepared by modified veneers have better thermal property than the unmodified wood.The dispersibility of the impregnation agent and the thermal property of the modified veneers were related to the amount of graphene addition,in which,2%graphene addition was the optimum amount when the same phenol?formaldehyde resin solid was used.Through multiple repeated tests,it was found that,when the phenol?formaldehyde resin content was 20%and the graphene addition content was 2%,the thermal conductivity of the modified veneers increased up to 0.272 W/(m·K),which was increased by 2 times compared with the unmodified wood.As a result,the heat transfer performance of the impregnated modified wood composite floor was 21℃/h.According to the electron microscope image,the graphene penetrated wood cell walls and occupied the cavities with the carrying solution(phenol?formaldehyde resin).The XRD image showed a decrease in diffraction intensity at 17.0°and 22.2°,and the crystallinity value calculated by Turley method also d

关 键 词：石墨烯 酚醛树脂 真空浸渍 导热性能 

分 类 号：S784[农业科学—林学] TS653[轻工技术与工程]