Page 51 - 《精细化工》2019年第11期

第 36 卷第 11 期 精 细 化 工 Vol.36, No.11
2019 年 11 月 FINE CHEMICALS Nov. 2019

功能材料
多孔凝胶基碳纳米定形相变材料的制备与表征

1
1
王 汀 ，丘晓琳 1,2* ，卢立新 1,2 ，周兵林
（1. 江南大学 机械工程学院，江苏 无锡 214122；2. 江苏省食品先进制造装备技术重点实验室，江苏
无锡 214122）

摘要：为提高定形相变材料（PCM）基材的负载能力，以丙烯酸和丙烯酰胺为单体，采用泡沫聚合法，通过优
化工艺参数制备出超大多孔水凝胶（SPH）；并以 SPH 为基材，水为 PCM，碳纳米材料〔氧化石墨烯（GO）和
碳纳米管（CNTs）〕为添加剂，制备了两种多孔凝胶基碳纳米 PCM（GO-H 2 O/SPH 和 CNTs-H 2 O/SPH）。对 SPH
和 PCM 的性能进行了表征。结果表明，通过优化工艺制备的 SPH 内部孔径在 100~500 μm，负载 PCM 的质量
分数最高达 95.7%。相变潜热从纯 PCM 的 352.3 J/g 下降到 CNTs-H 2 O/SPH 的 337.1 J/g，仅下降 4.3%。但 SPH
的加入使 PCM 的导热系数降低 42.1%。加入 GO 和 CNTs 可提高 PCM 的导热系数及吸收和释放热能的速率。
当 GO 和 CNTs 含量（以 GO-H 2 O 和 CNTs-H 2 O 质量为基准，下同）为 0.200%时，与不含碳纳米材料的 PCM 相
比，导热系数分别提高了 91.5%和 86.0%。PCM 有良好的热循环稳定性，可循环使用。
关键词：超大多孔水凝胶；碳纳米材料；定形相变材料；热能储存；功能材料
中图分类号：TB34 文献标识码：A 文章编号：1003-5214 (2019) 11-2199-08

Preparation and Characterization of Superporous Hydrogel/Carbon
Nano Form-stable Phase Change Materials

1
1
1,2
WANG Ting , QIU Xiao-lin 1,2* , LU Li-xin , ZHOU Bing-lin
（1. College of Mechanical Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China; 2. Jiangsu Key Laboratory
of Advanced Food Manufacturing Equipment and Technology, Wuxi 214122, Jiangsu, China）
Abstract: In order to improve the load capacity of the substrate of form-stable phase change materials
(PCM), superporous hydrogels (SPH) were prepared by a foam polymerization method using acrylic acid
and acrylamide as monomer.And then two kinds of superporous hydrogel/carbon nano form-stable phase
change materials (GO-H 2O/SPH and CNTs-H 2O/SPH) were prepared by using SPH as substrate, water as
PCM and carbon nanomaterials, graphene oxide (GO) and carbon nanotubes (CNTs) as additives. The
properties of SPH and form-stable PCMs were characterized. The results showed that the internal pore size
of SPH was 100~500 μm. The mass fraction of load PCM was up to 95.7%. The phase change enthalpy
decreased from 352.3 J/g of pure PCM to 337.1 J/g of CNTs-H 2O/SPH, which decreased by only 4.3%.
However, the addition of SPH reduced the thermal conductivity of PCM by 42.1%. Adding GO and CNTs
could increase the thermal conductivity and the rates of thermal charging and discharging of form-stable
PCMs. When the dosage of GO and CNTs were 0.200%(based on the mass of GO-H 2O and CNTs-H 2O, the
same below), the thermal conductivity of the prepared form-stable PCMs increased by 91.5% and 86.0%,
respectively, compared with the form-stable PCM without carbon nanomaterials. The form-stable PCMs
had good thermal cycle stability and could be recycled.
Key words: superporous hydrogel; carbon nanomaterials; form-stable phase change materials; thermal
energy storage; functional materials

收稿日期：2019-03-21; 定用日期：2019-06-05; DOI: 10.13550/j.jxhg.20190224
基金项目：国家自然科学基金（51503084）；中国博士后科学基金（2016M601713）；江苏省博士后科学基金（1601068C）
作者简介：王 汀（1994—），女，硕士生，E-mail：494339906@qq.com。联系人：丘晓琳（1979—），女，副教授，E-mail：
xiaolinqiu2005@126.com。